/**
 *                                  Apache License
 *                            Version 2.0, January 2004
 *                         http://www.apache.org/licenses/
 *
 *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 *
 *    1. Definitions.
 *
 *       "License" shall mean the terms and conditions for use, reproduction,
 *       and distribution as defined by Sections 1 through 9 of this document.
 *
 *       "Licensor" shall mean the copyright owner or entity authorized by
 *       the copyright owner that is granting the License.
 *
 *       "Legal Entity" shall mean the union of the acting entity and all
 *       other entities that control, are controlled by, or are under common
 *       control with that entity. For the purposes of this definition,
 *       "control" means (i) the power, direct or indirect, to cause the
 *       direction or management of such entity, whether by contract or
 *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
 *       outstanding shares, or (iii) beneficial ownership of such entity.
 *
 *       "You" (or "Your") shall mean an individual or Legal Entity
 *       exercising permissions granted by this License.
 *
 *       "Source" form shall mean the preferred form for making modifications,
 *       including but not limited to software source code, documentation
 *       source, and configuration files.
 *
 *       "Object" form shall mean any form resulting from mechanical
 *       transformation or translation of a Source form, including but
 *       not limited to compiled object code, generated documentation,
 *       and conversions to other media types.
 *
 *       "Work" shall mean the work of authorship, whether in Source or
 *       Object form, made available under the License, as indicated by a
 *       copyright notice that is included in or attached to the work
 *       (an example is provided in the Appendix below).
 *
 *       "Derivative Works" shall mean any work, whether in Source or Object
 *       form, that is based on (or derived from) the Work and for which the
 *       editorial revisions, annotations, elaborations, or other modifications
 *       represent, as a whole, an original work of authorship. For the purposes
 *       of this License, Derivative Works shall not include works that remain
 *       separable from, or merely link (or bind by name) to the interfaces of,
 *       the Work and Derivative Works thereof.
 *
 *       "Contribution" shall mean any work of authorship, including
 *       the original version of the Work and any modifications or additions
 *       to that Work or Derivative Works thereof, that is intentionally
 *       submitted to Licensor for inclusion in the Work by the copyright owner
 *       or by an individual or Legal Entity authorized to submit on behalf of
 *       the copyright owner. For the purposes of this definition, "submitted"
 *       means any form of electronic, verbal, or written communication sent
 *       to the Licensor or its representatives, including but not limited to
 *       communication on electronic mailing lists, source code control systems,
 *       and issue tracking systems that are managed by, or on behalf of, the
 *       Licensor for the purpose of discussing and improving the Work, but
 *       excluding communication that is conspicuously marked or otherwise
 *       designated in writing by the copyright owner as "Not a Contribution."
 *
 *       "Contributor" shall mean Licensor and any individual or Legal Entity
 *       on behalf of whom a Contribution has been received by Licensor and
 *       subsequently incorporated within the Work.
 *
 *    2. Grant of Copyright License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       copyright license to reproduce, prepare Derivative Works of,
 *       publicly display, publicly perform, sublicense, and distribute the
 *       Work and such Derivative Works in Source or Object form.
 *
 *    3. Grant of Patent License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       (except as stated in this section) patent license to make, have made,
 *       use, offer to sell, sell, import, and otherwise transfer the Work,
 *       where such license applies only to those patent claims licensable
 *       by such Contributor that are necessarily infringed by their
 *       Contribution(s) alone or by combination of their Contribution(s)
 *       with the Work to which such Contribution(s) was submitted. If You
 *       institute patent litigation against any entity (including a
 *       cross-claim or counterclaim in a lawsuit) alleging that the Work
 *       or a Contribution incorporated within the Work constitutes direct
 *       or contributory patent infringement, then any patent licenses
 *       granted to You under this License for that Work shall terminate
 *       as of the date such litigation is filed.
 *
 *    4. Redistribution. You may reproduce and distribute copies of the
 *       Work or Derivative Works thereof in any medium, with or without
 *       modifications, and in Source or Object form, provided that You
 *       meet the following conditions:
 *
 *       (a) You must give any other recipients of the Work or
 *           Derivative Works a copy of this License; and
 *
 *       (b) You must cause any modified files to carry prominent notices
 *           stating that You changed the files; and
 *
 *       (c) You must retain, in the Source form of any Derivative Works
 *           that You distribute, all copyright, patent, trademark, and
 *           attribution notices from the Source form of the Work,
 *           excluding those notices that do not pertain to any part of
 *           the Derivative Works; and
 *
 *       (d) If the Work includes a "NOTICE" text file as part of its
 *           distribution, then any Derivative Works that You distribute must
 *           include a readable copy of the attribution notices contained
 *           within such NOTICE file, excluding those notices that do not
 *           pertain to any part of the Derivative Works, in at least one
 *           of the following places: within a NOTICE text file distributed
 *           as part of the Derivative Works; within the Source form or
 *           documentation, if provided along with the Derivative Works; or,
 *           within a display generated by the Derivative Works, if and
 *           wherever such third-party notices normally appear. The contents
 *           of the NOTICE file are for informational purposes only and
 *           do not modify the License. You may add Your own attribution
 *           notices within Derivative Works that You distribute, alongside
 *           or as an addendum to the NOTICE text from the Work, provided
 *           that such additional attribution notices cannot be construed
 *           as modifying the License.
 *
 *       You may add Your own copyright statement to Your modifications and
 *       may provide additional or different license terms and conditions
 *       for use, reproduction, or distribution of Your modifications, or
 *       for any such Derivative Works as a whole, provided Your use,
 *       reproduction, and distribution of the Work otherwise complies with
 *       the conditions stated in this License.
 *
 *    5. Submission of Contributions. Unless You explicitly state otherwise,
 *       any Contribution intentionally submitted for inclusion in the Work
 *       by You to the Licensor shall be under the terms and conditions of
 *       this License, without any additional terms or conditions.
 *       Notwithstanding the above, nothing herein shall supersede or modify
 *       the terms of any separate license agreement you may have executed
 *       with Licensor regarding such Contributions.
 *
 *    6. Trademarks. This License does not grant permission to use the trade
 *       names, trademarks, service marks, or product names of the Licensor,
 *       except as required for reasonable and customary use in describing the
 *       origin of the Work and reproducing the content of the NOTICE file.
 *
 *    7. Disclaimer of Warranty. Unless required by applicable law or
 *       agreed to in writing, Licensor provides the Work (and each
 *       Contributor provides its Contributions) on an "AS IS" BASIS,
 *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 *       implied, including, without limitation, any warranties or conditions
 *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
 *       PARTICULAR PURPOSE. You are solely responsible for determining the
 *       appropriateness of using or redistributing the Work and assume any
 *       risks associated with Your exercise of permissions under this License.
 *
 *    8. Limitation of Liability. In no event and under no legal theory,
 *       whether in tort (including negligence), contract, or otherwise,
 *       unless required by applicable law (such as deliberate and grossly
 *       negligent acts) or agreed to in writing, shall any Contributor be
 *       liable to You for damages, including any direct, indirect, special,
 *       incidental, or consequential damages of any character arising as a
 *       result of this License or out of the use or inability to use the
 *       Work (including but not limited to damages for loss of goodwill,
 *       work stoppage, computer failure or malfunction, or any and all
 *       other commercial damages or losses), even if such Contributor
 *       has been advised of the possibility of such damages.
 *
 *    9. Accepting Warranty or Additional Liability. While redistributing
 *       the Work or Derivative Works thereof, You may choose to offer,
 *       and charge a fee for, acceptance of support, warranty, indemnity,
 *       or other liability obligations and/or rights consistent with this
 *       License. However, in accepting such obligations, You may act only
 *       on Your own behalf and on Your sole responsibility, not on behalf
 *       of any other Contributor, and only if You agree to indemnify,
 *       defend, and hold each Contributor harmless for any liability
 *       incurred by, or claims asserted against, such Contributor by reason
 *       of your accepting any such warranty or additional liability.
 *
 *    END OF TERMS AND CONDITIONS
 *
 *    APPENDIX: How to apply the Apache License to your work.
 *
 *       To apply the Apache License to your work, attach the following
 *       boilerplate notice, with the fields enclosed by brackets "{}"
 *       replaced with your own identifying information. (Don't include
 *       the brackets!)  The text should be enclosed in the appropriate
 *       comment syntax for the file format. We also recommend that a
 *       file or class name and description of purpose be included on the
 *       same "printed page" as the copyright notice for easier
 *       identification within third-party archives.
 *
 *    Copyright 2014 Edgar Espina
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.jooby.jooq;

import com.google.inject.Binder;
import com.google.inject.Key;
import com.google.inject.name.Names;
import com.typesafe.config.Config;
import com.zaxxer.hikari.HikariDataSource;
import org.jooby.Env;
import org.jooby.Env.ServiceKey;
import org.jooby.Jooby;
import org.jooby.jdbc.Jdbc;
import org.jooq.Configuration;
import org.jooq.ConnectionProvider;
import org.jooq.DSLContext;
import org.jooq.impl.DSL;
import org.jooq.impl.DataSourceConnectionProvider;
import org.jooq.impl.DefaultConfiguration;
import org.jooq.impl.DefaultTransactionProvider;
import org.jooq.tools.jdbc.JDBCUtils;

import javax.inject.Provider;
import javax.sql.DataSource;
import java.util.NoSuchElementException;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import java.util.function.Supplier;

/**
 *
jOOQ

 *

 * jOOQ generates Java code from your database and lets you build
 * type safe SQL queries through its fluent API.
 *

 *
 *

 * This module depends on {@link Jdbc} module.
 *

 *
 *
usage

 *

 * {
 *   use(new Jdbc());
 *   use(new jOOQ());
 *
 *   get("/jooq", req {@literal ->} {
 *     try (DSLContext ctx = req.require(DSLContext.class)) {
 *       return ctx.transactionResult(conf {@literal ->} {
 *         DSLContext trx = DSL.using(conf);
 *         return trx.selectFrom(TABLE)
 *             .where(ID.eq(1))
 *             .fetchOne(NAME);
 *       });
 *     }
 *   });
 * }
 *

 *
 *
multiple db connections

 *
 *

 * {
 *   use(new Jdbc("db.main"));
 *   use(new jOOQ("db.main"));
 *
 *   use(new Jdbc("db.audit"));
 *   use(new jOOQ("db.audit"));
 *
 *   get("/main", req {@literal ->} {
 *     try (DSLContext ctx = req.require("db.main", DSLContext.class)) {
 *       ...
 *     }
 *   });
 *
 *   get("/audit", req {@literal ->} {
 *     try (DSLContext ctx = req.require("db.audit", DSLContext.class)) {
 *       ...
 *     }
 *   });
 * }
 *

 *
 *
advanced configuration

 *

 * This module setup a {@link Configuration} object with a {@link DataSource} from {@link Jdbc}
 * module and the {@link DefaultTransactionProvider}. More advanced configuration is provided via
 * {@link #doWith(BiConsumer)}:
 *

 *

 * {
 *   use(new Jdbc());
 *
 *   use(new jOOQ().doWith(conf {@literal ->} {
 *     conf.set(...);
 *   });
 * }
 *

 *
 *
code generation

 *

 * Unfortunately, this module doesn't provide any built-in facility for code generation. If you need
 * help to setup the code generator please checkout the
 * jOOQ documentation for more
 * information.
 *

 *
 * @author edgar
 * @since 0.15.0
 */
public class jOOQ implements Jooby.Module {

  private final String name;

  private BiConsumer<Configuration, Config> callback;

  /**
   * Creates a new {@link jOOQ} module.
   *
   * @param name Database name.
   */
  public jOOQ(final String name) {
    this.name = name;
  }

  /**
   * Creates a new {@link jOOQ} module.
   */
  public jOOQ() {
    this("db");
  }

  /**
   * Configuration callback.
   *
   * @param configurer Callback.
   * @return This module.
   */
  public jOOQ doWith(BiConsumer<Configuration, Config> configurer) {
    this.callback = configurer;
    return this;
  }

  /**
   * Configuration callback.
   *
   * @param configurer Callback.
   * @return This module.
   */
  public jOOQ doWith(Consumer<Configuration> configurer) {
    return doWith((configuration, conf) -> configurer.accept(configuration));
  }

  @Override
  public void configure(final Env env, final Config conf, final Binder binder) {
    Key<DataSource> dskey = Key.get(DataSource.class, Names.named(name));
    Supplier<NoSuchElementException> noSuchElement = () -> new NoSuchElementException(
        "DataSource missing: " + dskey);
    HikariDataSource ds = (HikariDataSource) env.get(dskey).orElseThrow(noSuchElement);
    Configuration jooqconf = new DefaultConfiguration();
    ConnectionProvider dscp = new DataSourceConnectionProvider(ds);
    jooqconf.set(JDBCUtils.dialect(env.get(Key.get(String.class, Names.named(name + ".url")))
        .orElseThrow(noSuchElement)));
    jooqconf.set(dscp);
    jooqconf.set(new DefaultTransactionProvider(dscp));

    if (callback != null) {
      callback.accept(jooqconf, conf);
    }

    ServiceKey serviceKey = env.serviceKey();
    serviceKey.generate(Configuration.class, name, k -> binder.bind(k).toInstance(jooqconf));

    Provider<DSLContext> dsl = () -> DSL.using(jooqconf);
    serviceKey.generate(DSLContext.class, name, k -> binder.bind(k).toProvider(dsl));
  }
}


/**
 *                                  Apache License
 *                            Version 2.0, January 2004
 *                         http://www.apache.org/licenses/
 *
 *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 *
 *    1. Definitions.
 *
 *       "License" shall mean the terms and conditions for use, reproduction,
 *       and distribution as defined by Sections 1 through 9 of this document.
 *
 *       "Licensor" shall mean the copyright owner or entity authorized by
 *       the copyright owner that is granting the License.
 *
 *       "Legal Entity" shall mean the union of the acting entity and all
 *       other entities that control, are controlled by, or are under common
 *       control with that entity. For the purposes of this definition,
 *       "control" means (i) the power, direct or indirect, to cause the
 *       direction or management of such entity, whether by contract or
 *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
 *       outstanding shares, or (iii) beneficial ownership of such entity.
 *
 *       "You" (or "Your") shall mean an individual or Legal Entity
 *       exercising permissions granted by this License.
 *
 *       "Source" form shall mean the preferred form for making modifications,
 *       including but not limited to software source code, documentation
 *       source, and configuration files.
 *
 *       "Object" form shall mean any form resulting from mechanical
 *       transformation or translation of a Source form, including but
 *       not limited to compiled object code, generated documentation,
 *       and conversions to other media types.
 *
 *       "Work" shall mean the work of authorship, whether in Source or
 *       Object form, made available under the License, as indicated by a
 *       copyright notice that is included in or attached to the work
 *       (an example is provided in the Appendix below).
 *
 *       "Derivative Works" shall mean any work, whether in Source or Object
 *       form, that is based on (or derived from) the Work and for which the
 *       editorial revisions, annotations, elaborations, or other modifications
 *       represent, as a whole, an original work of authorship. For the purposes
 *       of this License, Derivative Works shall not include works that remain
 *       separable from, or merely link (or bind by name) to the interfaces of,
 *       the Work and Derivative Works thereof.
 *
 *       "Contribution" shall mean any work of authorship, including
 *       the original version of the Work and any modifications or additions
 *       to that Work or Derivative Works thereof, that is intentionally
 *       submitted to Licensor for inclusion in the Work by the copyright owner
 *       or by an individual or Legal Entity authorized to submit on behalf of
 *       the copyright owner. For the purposes of this definition, "submitted"
 *       means any form of electronic, verbal, or written communication sent
 *       to the Licensor or its representatives, including but not limited to
 *       communication on electronic mailing lists, source code control systems,
 *       and issue tracking systems that are managed by, or on behalf of, the
 *       Licensor for the purpose of discussing and improving the Work, but
 *       excluding communication that is conspicuously marked or otherwise
 *       designated in writing by the copyright owner as "Not a Contribution."
 *
 *       "Contributor" shall mean Licensor and any individual or Legal Entity
 *       on behalf of whom a Contribution has been received by Licensor and
 *       subsequently incorporated within the Work.
 *
 *    2. Grant of Copyright License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       copyright license to reproduce, prepare Derivative Works of,
 *       publicly display, publicly perform, sublicense, and distribute the
 *       Work and such Derivative Works in Source or Object form.
 *
 *    3. Grant of Patent License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       (except as stated in this section) patent license to make, have made,
 *       use, offer to sell, sell, import, and otherwise transfer the Work,
 *       where such license applies only to those patent claims licensable
 *       by such Contributor that are necessarily infringed by their
 *       Contribution(s) alone or by combination of their Contribution(s)
 *       with the Work to which such Contribution(s) was submitted. If You
 *       institute patent litigation against any entity (including a
 *       cross-claim or counterclaim in a lawsuit) alleging that the Work
 *       or a Contribution incorporated within the Work constitutes direct
 *       or contributory patent infringement, then any patent licenses
 *       granted to You under this License for that Work shall terminate
 *       as of the date such litigation is filed.
 *
 *    4. Redistribution. You may reproduce and distribute copies of the
 *       Work or Derivative Works thereof in any medium, with or without
 *       modifications, and in Source or Object form, provided that You
 *       meet the following conditions:
 *
 *       (a) You must give any other recipients of the Work or
 *           Derivative Works a copy of this License; and
 *
 *       (b) You must cause any modified files to carry prominent notices
 *           stating that You changed the files; and
 *
 *       (c) You must retain, in the Source form of any Derivative Works
 *           that You distribute, all copyright, patent, trademark, and
 *           attribution notices from the Source form of the Work,
 *           excluding those notices that do not pertain to any part of
 *           the Derivative Works; and
 *
 *       (d) If the Work includes a "NOTICE" text file as part of its
 *           distribution, then any Derivative Works that You distribute must
 *           include a readable copy of the attribution notices contained
 *           within such NOTICE file, excluding those notices that do not
 *           pertain to any part of the Derivative Works, in at least one
 *           of the following places: within a NOTICE text file distributed
 *           as part of the Derivative Works; within the Source form or
 *           documentation, if provided along with the Derivative Works; or,
 *           within a display generated by the Derivative Works, if and
 *           wherever such third-party notices normally appear. The contents
 *           of the NOTICE file are for informational purposes only and
 *           do not modify the License. You may add Your own attribution
 *           notices within Derivative Works that You distribute, alongside
 *           or as an addendum to the NOTICE text from the Work, provided
 *           that such additional attribution notices cannot be construed
 *           as modifying the License.
 *
 *       You may add Your own copyright statement to Your modifications and
 *       may provide additional or different license terms and conditions
 *       for use, reproduction, or distribution of Your modifications, or
 *       for any such Derivative Works as a whole, provided Your use,
 *       reproduction, and distribution of the Work otherwise complies with
 *       the conditions stated in this License.
 *
 *    5. Submission of Contributions. Unless You explicitly state otherwise,
 *       any Contribution intentionally submitted for inclusion in the Work
 *       by You to the Licensor shall be under the terms and conditions of
 *       this License, without any additional terms or conditions.
 *       Notwithstanding the above, nothing herein shall supersede or modify
 *       the terms of any separate license agreement you may have executed
 *       with Licensor regarding such Contributions.
 *
 *    6. Trademarks. This License does not grant permission to use the trade
 *       names, trademarks, service marks, or product names of the Licensor,
 *       except as required for reasonable and customary use in describing the
 *       origin of the Work and reproducing the content of the NOTICE file.
 *
 *    7. Disclaimer of Warranty. Unless required by applicable law or
 *       agreed to in writing, Licensor provides the Work (and each
 *       Contributor provides its Contributions) on an "AS IS" BASIS,
 *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 *       implied, including, without limitation, any warranties or conditions
 *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
 *       PARTICULAR PURPOSE. You are solely responsible for determining the
 *       appropriateness of using or redistributing the Work and assume any
 *       risks associated with Your exercise of permissions under this License.
 *
 *    8. Limitation of Liability. In no event and under no legal theory,
 *       whether in tort (including negligence), contract, or otherwise,
 *       unless required by applicable law (such as deliberate and grossly
 *       negligent acts) or agreed to in writing, shall any Contributor be
 *       liable to You for damages, including any direct, indirect, special,
 *       incidental, or consequential damages of any character arising as a
 *       result of this License or out of the use or inability to use the
 *       Work (including but not limited to damages for loss of goodwill,
 *       work stoppage, computer failure or malfunction, or any and all
 *       other commercial damages or losses), even if such Contributor
 *       has been advised of the possibility of such damages.
 *
 *    9. Accepting Warranty or Additional Liability. While redistributing
 *       the Work or Derivative Works thereof, You may choose to offer,
 *       and charge a fee for, acceptance of support, warranty, indemnity,
 *       or other liability obligations and/or rights consistent with this
 *       License. However, in accepting such obligations, You may act only
 *       on Your own behalf and on Your sole responsibility, not on behalf
 *       of any other Contributor, and only if You agree to indemnify,
 *       defend, and hold each Contributor harmless for any liability
 *       incurred by, or claims asserted against, such Contributor by reason
 *       of your accepting any such warranty or additional liability.
 *
 *    END OF TERMS AND CONDITIONS
 *
 *    APPENDIX: How to apply the Apache License to your work.
 *
 *       To apply the Apache License to your work, attach the following
 *       boilerplate notice, with the fields enclosed by brackets "{}"
 *       replaced with your own identifying information. (Don't include
 *       the brackets!)  The text should be enclosed in the appropriate
 *       comment syntax for the file format. We also recommend that a
 *       file or class name and description of purpose be included on the
 *       same "printed page" as the copyright notice for easier
 *       identification within third-party archives.
 *
 *    Copyright 2014 Edgar Espina
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.jooby.quartz;

import static java.util.Objects.requireNonNull;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.BiConsumer;
import java.util.function.Consumer;

import org.jooby.Env;
import org.jooby.Jooby;
import org.jooby.internal.quartz.JobExpander;
import org.jooby.internal.quartz.QuartzProvider;
import org.quartz.Job;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;
import org.quartz.JobKey;
import org.quartz.Scheduler;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.TriggerKey;

import com.google.common.collect.Lists;
import com.google.inject.Binder;
import com.google.inject.TypeLiteral;
import com.google.inject.name.Names;
import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;

/**
 * Build and create a {@link Scheduler Quartz Scheduler} and {@link Job jobs}.
 *
 *
usage

 *
 *

 *  {
 *    use(new Quartz().with(MyJob.class));
 *  }
 *

 *
 * Previous example will startup Quartz and schedule MyJob.
 *
 *
jobs

 *

 * A job can implement the {@link Job} interface as described in the Quartz documentation
 *

 *
 *

 * If you prefer to not implement the {@link Job} interface, all you have to do is to annotated a
 * method with the {@link Scheduled} annotation.
 *

 *

 * By default, job name is set the class name or to the method name. Default group is set to the
 * package name of the job class.
 *

 *
 *
job methods

 *

 * A job method must follow this rules:
 *

 *
 *

 *
It must be a public method

 *
Without a return value

 *
Have ZERO arguments

 *
or just ONE argument of type {@link JobExecutionContext}

 *

 *
 * The next section will you show how to add a trigger to a job and some examples too.
 *
 *
triggers

 *

 * Trigger are defined by the {@link Scheduled} annotation. The annotation defines a single and
 * required attribute, which is basically a trigger expression or a reference to one.
 *

 *
 * Examples:
 *

 * Run every 5 minutes, start immediately and repeat for ever:
 *

 *
 *

 * @Scheduled("5m")
 *
 * @Scheduled("5m; delay=0")
 *
 * @Scheduled("5m; delay=0; repeat=*")
 *

 *
 * Previous, expressions are identical.
 *
 *

 * Run every 1 hour with an initial delay of 15 minutes for 10 times
 *

 *
 *

 * @Scheduled("1h; delay=15m; repeat=10")
 *

 *
 *

 * Fire at 12pm (noon) every day
 *

 *
 *

 * 0 0 12 * * ?
 *

 *
 *

 * Fire at 10:15am every day
 *

 *
 *

 * 0 15 10 ? * *
 *

 *
 *
grouping jobs together

 *

 * If you have two or more jobs doing something similar, it is possible to group all them into one
 * single class:
 *

 *
 *

 *  public class MyJobs {
 *    @Scheduled("5minutes")
 *    public void job1() {
 *      ...
 *    }
 *
 *    @Scheduled("1h")
 *    public void job2() {
 *      ...
 *    }
 *  }
 *

 *
 *
dependency injection

 *

 * Not much to add here, just let you know jobs are created by Guice.
 *

 *
 *

 *  public class MyJob {
 *
 *    private A a;
 *
 *    @Inject
 *    public MyJob(A a) {
 *      this.a = a;
 *    }
 *
 *    @Scheduled("5minutes")
 *    public void doWork() {
 *      this.a.doWork();
 *    }
 *  }
 *

 *
 *

 * Injecting a {@link Scheduler}
 *

 *
 *

 *  public class MyJobManager {
 *
 *    private Scheduler scheduler;
 *
 *    @Inject
 *    public MyJobManager(Scheduler scheduler) {
 *      this.scheduler = scheduler;
 *    }
 *  }
 *

 *
 *
configuration

 *

 * Example: Setting max number of threads
 *

 *
 *

 *  # application.conf
 *  org.quartz.threadPool.threadCount = 1 # default is number of available processors
 *

 *

 * Configuration follows the Quartz
 * documentation. The only difference is that you need to put add the properties on your
 * *.conf file, NOT in a custom quartz.properties file.
 *

 *
 *
jdbc store

 *

 * Jdbc Store is fully supported but it depends on the jooby-jdbc module. So, in order
 * to use the Jdbc Store you need to follow these steps:
 *

 *
 *

 * 1. Install the Jdbc module:
 *

 *
 *

 * {
 *   use(new Jdbc());
 *   use(new Quartz(MyJob.class));
 * }
 *

 *
 *

 * 2. Set the quartz properties:
 *

 *
 *

 *  org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
 *  org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.StdJDBCDelegate
 *  org.quartz.jobStore.dataSource = db
 *

 *
 *
adding jobs programmatically

 *

 * When {@link Scheduled} isn't not enough and/or if you prefer to build jobs manually, you can try
 * one of the available alternatives.
 *

 *
 *

 * Example 1: build the trigger and use default job naming
 *

 *
 *

 *   {
 *     use(new Quartz()
 *      .with(MyJob.class, trigger {@literal ->} {
 *        trigger
 *          .withSchedule(withIntervalInDays(3))
 *          .startAt(futureDate(10, MINUTES));
 *      })
 *     );
 *   }
 *

 *
 *

 * Example 2: build the job, the trigger and use default job naming
 *

 *
 *

 *   {
 *     use(new Quartz()
 *      .with(MyJob.class, (job, trigger) {@literal ->} {
 *        job.withDescription("etc...");
 *
 *        trigger
 *          .withSchedule(withIntervalInDays(3))
 *          .startAt(futureDate(10, MINUTES));
 *      })
 *     );
 *   }
 *

 *
 *

 * Example 3: build and set everything from scratch
 *

 *
 *

 *   {
 *     use(new Quartz()
 *      .with(
 *        newJob(MyJob.class).withDescription("etc...")
 *          .build(),
 *        newTrigger()
 *          .withSchedule(withIntervalInDays(3))
 *          .startAt(futureDate(10, MINUTES))
 *          .build()
 *      })
 *     );
 *   }
 *

 *
 * Enjoy it!
 *
 * @author edgar
 * @since 0.5.0
 */
public class Quartz implements Jooby.Module {

  private final List<Class<?>> jobs;

  private final Map<JobDetail, Trigger> jobMap = new HashMap<>();

  /**
   * Creates a new {@link Quartz} module. Optionally add some jobs.
   *
   * @param jobs Jobs to setup. Optional.
   * @see #with(Class)
   */
  public Quartz(final Class<?>... jobs) {
    this.jobs = Lists.newArrayList(jobs);
  }

  /**
   * Schedule the provided job and trigger.
   *
   * @param job A job to schedule.
   * @param trigger A trigger for provided job.
   * @return This quartz instance.
   */
  public Quartz with(final JobDetail job, final Trigger trigger) {
    requireNonNull(job, "Job is required.");
    requireNonNull(trigger, "Trigger is required.");
    jobMap.put(job, trigger);
    return this;
  }

  /**
   * Setup and schedule the provided job, it might implement a {@link Job} and the {@link Scheduled}
   * annotation must be present.
   *
   * @param jobClass A jobClass to setup and schedule.
   * @return This quartz instance.
   */
  public Quartz with(final Class<?> jobClass) {
    jobs.add(jobClass);
    return this;
  }

  /**
   * Schedule the provided job and trigger. This method will setup a default name and group for
   * both.
   *
   * @param jobClass A jobClass to setup and schedule.
   * @param configurer A callback to setup the job and trigger.
   * @return This quartz instance.
   */
  public Quartz with(final Class<? extends Job> jobClass,
      final BiConsumer<JobBuilder, TriggerBuilder<Trigger>> configurer) {
    requireNonNull(jobClass, "Job class is required.");
    JobBuilder job = JobBuilder.newJob(jobClass)
        .withIdentity(
            JobKey.jobKey(jobClass.getSimpleName(), jobClass.getPackage().getName())
        );
    TriggerBuilder<Trigger> trigger = TriggerBuilder.newTrigger()
        .withIdentity(
            TriggerKey.triggerKey(jobClass.getSimpleName(), jobClass.getPackage().getName())
        );
    configurer.accept(job, trigger);
    return with(job.build(), trigger.build());
  }

  /**
   * Schedule the provided job and trigger. This method will setup a default name and group for
   * both.
   *
   * @param jobClass A jobClass to setup and schedule.
   * @param configurer A callback to setup the trigger.
   * @return This quartz instance.
   */
  public Quartz with(final Class<? extends Job> jobClass,
      final Consumer<TriggerBuilder<Trigger>> configurer) {
    requireNonNull(jobClass, "Job class is required.");
    JobBuilder job = JobBuilder.newJob(jobClass)
        .withIdentity(
            JobKey.jobKey(jobClass.getSimpleName(), jobClass.getPackage().getName())
        );
    TriggerBuilder<Trigger> trigger = TriggerBuilder.newTrigger()
        .withIdentity(
            TriggerKey.triggerKey(jobClass.getSimpleName(), jobClass.getPackage().getName())
        );
    configurer.accept(trigger);
    return with(job.build(), trigger.build());
  }

  @Override
  public void configure(final Env env, final Config config, final Binder binder) {
    jobMap.putAll(JobExpander.jobs(config, jobs));
    binder.bind(Scheduler.class).toProvider(QuartzProvider.class).asEagerSingleton();
    env.lifeCycle(QuartzProvider.class);
    binder.bind(new TypeLiteral<Map<JobDetail, Trigger>>() {
    }).annotatedWith(Names.named("org.quartz.jobs")).toInstance(jobMap);
  }

  @Override
  public Config config() {
    return ConfigFactory.parseResources(getClass(), "quartz.conf")
        .withFallback(ConfigFactory.parseResources(Job.class, "quartz.properties"));
  }
}


/**
 *                                  Apache License
 *                            Version 2.0, January 2004
 *                         http://www.apache.org/licenses/
 *
 *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 *
 *    1. Definitions.
 *
 *       "License" shall mean the terms and conditions for use, reproduction,
 *       and distribution as defined by Sections 1 through 9 of this document.
 *
 *       "Licensor" shall mean the copyright owner or entity authorized by
 *       the copyright owner that is granting the License.
 *
 *       "Legal Entity" shall mean the union of the acting entity and all
 *       other entities that control, are controlled by, or are under common
 *       control with that entity. For the purposes of this definition,
 *       "control" means (i) the power, direct or indirect, to cause the
 *       direction or management of such entity, whether by contract or
 *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
 *       outstanding shares, or (iii) beneficial ownership of such entity.
 *
 *       "You" (or "Your") shall mean an individual or Legal Entity
 *       exercising permissions granted by this License.
 *
 *       "Source" form shall mean the preferred form for making modifications,
 *       including but not limited to software source code, documentation
 *       source, and configuration files.
 *
 *       "Object" form shall mean any form resulting from mechanical
 *       transformation or translation of a Source form, including but
 *       not limited to compiled object code, generated documentation,
 *       and conversions to other media types.
 *
 *       "Work" shall mean the work of authorship, whether in Source or
 *       Object form, made available under the License, as indicated by a
 *       copyright notice that is included in or attached to the work
 *       (an example is provided in the Appendix below).
 *
 *       "Derivative Works" shall mean any work, whether in Source or Object
 *       form, that is based on (or derived from) the Work and for which the
 *       editorial revisions, annotations, elaborations, or other modifications
 *       represent, as a whole, an original work of authorship. For the purposes
 *       of this License, Derivative Works shall not include works that remain
 *       separable from, or merely link (or bind by name) to the interfaces of,
 *       the Work and Derivative Works thereof.
 *
 *       "Contribution" shall mean any work of authorship, including
 *       the original version of the Work and any modifications or additions
 *       to that Work or Derivative Works thereof, that is intentionally
 *       submitted to Licensor for inclusion in the Work by the copyright owner
 *       or by an individual or Legal Entity authorized to submit on behalf of
 *       the copyright owner. For the purposes of this definition, "submitted"
 *       means any form of electronic, verbal, or written communication sent
 *       to the Licensor or its representatives, including but not limited to
 *       communication on electronic mailing lists, source code control systems,
 *       and issue tracking systems that are managed by, or on behalf of, the
 *       Licensor for the purpose of discussing and improving the Work, but
 *       excluding communication that is conspicuously marked or otherwise
 *       designated in writing by the copyright owner as "Not a Contribution."
 *
 *       "Contributor" shall mean Licensor and any individual or Legal Entity
 *       on behalf of whom a Contribution has been received by Licensor and
 *       subsequently incorporated within the Work.
 *
 *    2. Grant of Copyright License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       copyright license to reproduce, prepare Derivative Works of,
 *       publicly display, publicly perform, sublicense, and distribute the
 *       Work and such Derivative Works in Source or Object form.
 *
 *    3. Grant of Patent License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       (except as stated in this section) patent license to make, have made,
 *       use, offer to sell, sell, import, and otherwise transfer the Work,
 *       where such license applies only to those patent claims licensable
 *       by such Contributor that are necessarily infringed by their
 *       Contribution(s) alone or by combination of their Contribution(s)
 *       with the Work to which such Contribution(s) was submitted. If You
 *       institute patent litigation against any entity (including a
 *       cross-claim or counterclaim in a lawsuit) alleging that the Work
 *       or a Contribution incorporated within the Work constitutes direct
 *       or contributory patent infringement, then any patent licenses
 *       granted to You under this License for that Work shall terminate
 *       as of the date such litigation is filed.
 *
 *    4. Redistribution. You may reproduce and distribute copies of the
 *       Work or Derivative Works thereof in any medium, with or without
 *       modifications, and in Source or Object form, provided that You
 *       meet the following conditions:
 *
 *       (a) You must give any other recipients of the Work or
 *           Derivative Works a copy of this License; and
 *
 *       (b) You must cause any modified files to carry prominent notices
 *           stating that You changed the files; and
 *
 *       (c) You must retain, in the Source form of any Derivative Works
 *           that You distribute, all copyright, patent, trademark, and
 *           attribution notices from the Source form of the Work,
 *           excluding those notices that do not pertain to any part of
 *           the Derivative Works; and
 *
 *       (d) If the Work includes a "NOTICE" text file as part of its
 *           distribution, then any Derivative Works that You distribute must
 *           include a readable copy of the attribution notices contained
 *           within such NOTICE file, excluding those notices that do not
 *           pertain to any part of the Derivative Works, in at least one
 *           of the following places: within a NOTICE text file distributed
 *           as part of the Derivative Works; within the Source form or
 *           documentation, if provided along with the Derivative Works; or,
 *           within a display generated by the Derivative Works, if and
 *           wherever such third-party notices normally appear. The contents
 *           of the NOTICE file are for informational purposes only and
 *           do not modify the License. You may add Your own attribution
 *           notices within Derivative Works that You distribute, alongside
 *           or as an addendum to the NOTICE text from the Work, provided
 *           that such additional attribution notices cannot be construed
 *           as modifying the License.
 *
 *       You may add Your own copyright statement to Your modifications and
 *       may provide additional or different license terms and conditions
 *       for use, reproduction, or distribution of Your modifications, or
 *       for any such Derivative Works as a whole, provided Your use,
 *       reproduction, and distribution of the Work otherwise complies with
 *       the conditions stated in this License.
 *
 *    5. Submission of Contributions. Unless You explicitly state otherwise,
 *       any Contribution intentionally submitted for inclusion in the Work
 *       by You to the Licensor shall be under the terms and conditions of
 *       this License, without any additional terms or conditions.
 *       Notwithstanding the above, nothing herein shall supersede or modify
 *       the terms of any separate license agreement you may have executed
 *       with Licensor regarding such Contributions.
 *
 *    6. Trademarks. This License does not grant permission to use the trade
 *       names, trademarks, service marks, or product names of the Licensor,
 *       except as required for reasonable and customary use in describing the
 *       origin of the Work and reproducing the content of the NOTICE file.
 *
 *    7. Disclaimer of Warranty. Unless required by applicable law or
 *       agreed to in writing, Licensor provides the Work (and each
 *       Contributor provides its Contributions) on an "AS IS" BASIS,
 *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 *       implied, including, without limitation, any warranties or conditions
 *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
 *       PARTICULAR PURPOSE. You are solely responsible for determining the
 *       appropriateness of using or redistributing the Work and assume any
 *       risks associated with Your exercise of permissions under this License.
 *
 *    8. Limitation of Liability. In no event and under no legal theory,
 *       whether in tort (including negligence), contract, or otherwise,
 *       unless required by applicable law (such as deliberate and grossly
 *       negligent acts) or agreed to in writing, shall any Contributor be
 *       liable to You for damages, including any direct, indirect, special,
 *       incidental, or consequential damages of any character arising as a
 *       result of this License or out of the use or inability to use the
 *       Work (including but not limited to damages for loss of goodwill,
 *       work stoppage, computer failure or malfunction, or any and all
 *       other commercial damages or losses), even if such Contributor
 *       has been advised of the possibility of such damages.
 *
 *    9. Accepting Warranty or Additional Liability. While redistributing
 *       the Work or Derivative Works thereof, You may choose to offer,
 *       and charge a fee for, acceptance of support, warranty, indemnity,
 *       or other liability obligations and/or rights consistent with this
 *       License. However, in accepting such obligations, You may act only
 *       on Your own behalf and on Your sole responsibility, not on behalf
 *       of any other Contributor, and only if You agree to indemnify,
 *       defend, and hold each Contributor harmless for any liability
 *       incurred by, or claims asserted against, such Contributor by reason
 *       of your accepting any such warranty or additional liability.
 *
 *    END OF TERMS AND CONDITIONS
 *
 *    APPENDIX: How to apply the Apache License to your work.
 *
 *       To apply the Apache License to your work, attach the following
 *       boilerplate notice, with the fields enclosed by brackets "{}"
 *       replaced with your own identifying information. (Don't include
 *       the brackets!)  The text should be enclosed in the appropriate
 *       comment syntax for the file format. We also recommend that a
 *       file or class name and description of purpose be included on the
 *       same "printed page" as the copyright notice for easier
 *       identification within third-party archives.
 *
 *    Copyright 2014 Edgar Espina
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.jooby.internal.netty;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.Maps;
import com.typesafe.config.Config;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.epoll.Epoll;
import io.netty.channel.epoll.EpollChannelOption;
import io.netty.channel.epoll.EpollEventLoopGroup;
import io.netty.channel.epoll.EpollServerSocketChannel;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.util.ResourceLeakDetector;
import io.netty.util.ResourceLeakDetector.Level;
import io.netty.util.concurrent.DefaultEventExecutorGroup;
import io.netty.util.concurrent.DefaultThreadFactory;
import io.netty.util.concurrent.EventExecutorGroup;
import org.jooby.spi.HttpHandler;
import org.jooby.spi.Server;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.inject.Inject;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Optional;
import java.util.concurrent.Executor;
import java.util.concurrent.ThreadFactory;
import java.util.function.BiConsumer;

public class NettyServer implements Server {

  /** The logging system. */
  private final Logger log = LoggerFactory.getLogger(Server.class);

  private EventLoopGroup bossLoop;

  private EventLoopGroup workerLoop;

  private Channel ch;

  private Config conf;

  private HttpHandler dispatcher;

  private DefaultEventExecutorGroup executor;

  @Inject
  public NettyServer(final HttpHandler dispatcher, final Config config) {
    this.dispatcher = dispatcher;
    this.conf = config;
  }

  @Override
  public void start() throws Exception {
    int bossThreads = conf.getInt("netty.threads.Boss");
    bossLoop = eventLoop(bossThreads, "boss");
    int workerThreads = conf.getInt("netty.threads.Worker");
    if (workerThreads > 0) {
      workerLoop = eventLoop(Math.max(4, workerThreads), "worker");
    } else {
      workerLoop = bossLoop;
    }

    ThreadFactory threadFactory = new DefaultThreadFactory(conf.getString("netty.threads.Name"));
    this.executor = new DefaultEventExecutorGroup(conf.getInt("netty.threads.Max"), threadFactory);

    this.ch = bootstrap(executor, null, conf.getInt("application.port"));

    boolean securePort = conf.hasPath("application.securePort");

    if (securePort) {
      bootstrap(executor, NettySslContext.build(conf), conf.getInt("application.securePort"));
    }
  }

  private Channel bootstrap(final EventExecutorGroup executor, final SslContext sslCtx,
    final int port) throws InterruptedException {
    ServerBootstrap bootstrap = new ServerBootstrap();

    boolean epoll = bossLoop instanceof EpollEventLoopGroup;
    bootstrap.group(bossLoop, workerLoop)
      .channel(epoll ? EpollServerSocketChannel.class : NioServerSocketChannel.class)
      .handler(new LoggingHandler(Server.class, LogLevel.DEBUG))
      .childHandler(new NettyPipeline(executor, dispatcher, conf, sslCtx));

    configure(conf.getConfig("netty.options"), "netty.options",
      (option, value) -> bootstrap.option(option, value));

    configure(conf.getConfig("netty.worker.options"), "netty.worker.options",
      (option, value) -> bootstrap.childOption(option, value));

    return bootstrap
      .bind(host(conf.getString("application.host")), port)
      .sync()
      .channel();
  }

  private String host(final String host) {
    return "localhost".equals(host) ? "0.0.0.0" : host;
  }

  @Override
  public void stop() throws Exception {
    shutdownGracefully(ImmutableList.of(bossLoop, workerLoop, executor).iterator());
  }

  @Override
  public void join() throws InterruptedException {
    ch.closeFuture().sync();
  }

  @Override
  public Optional<Executor> executor() {
    return Optional.ofNullable(executor);
  }

  @SuppressWarnings({"rawtypes", "unchecked"})
  private void configure(final Config config, final String path,
    final BiConsumer<ChannelOption<Object>, Object> setter) {
    config.entrySet().forEach(entry -> {
      Entry<ChannelOption, Class<?>> result = findOption(entry.getKey());
      if (result != null) {
        ChannelOption option = result.getKey();
        String optionName = entry.getKey();
        Class<?> optionType = result.getValue();
        final Object value;
        if (optionType == Boolean.class) {
          value = config.getBoolean(optionName);
        } else if (optionType == Integer.class) {
          value = config.getInt(optionName);
        } else if (optionType == Long.class) {
          value = config.getLong(optionName);
        } else {
          value = config.getString(optionName);
        }
        log.debug("{}.{}({})", path, option, value);
        setter.accept(option, value);
      } else {
        log.error("Unknown option: {}.{}", path, entry.getKey());
      }
    });

  }

  @SuppressWarnings("rawtypes")
  private Map.Entry<ChannelOption, Class<?>> findOption(final String optionName) {
    try {
      Field field = EpollChannelOption.class.getField(optionName);
      ChannelOption option = (ChannelOption) field.get(null);
      Class optionType = (Class) ((ParameterizedType) field.getGenericType())
        .getActualTypeArguments()[0];
      return Maps.immutableEntry(option, optionType);
    } catch (NoSuchFieldException | SecurityException | IllegalAccessException ex) {
      return null;
    }
  }

  private EventLoopGroup eventLoop(final int threads, final String name) {
    log.debug("netty.threads.{}({})", name, threads);
    if (Epoll.isAvailable()) {
      return new EpollEventLoopGroup(threads, new DefaultThreadFactory("epoll-" + name, false));
    }
    return new NioEventLoopGroup(threads, new DefaultThreadFactory("nio-" + name, false));
  }

  /**
   * Shutdown executor in order.
   *
   * @param iterator Executors to shutdown.
   */
  private void shutdownGracefully(final Iterator<EventExecutorGroup> iterator) {
    if (iterator.hasNext()) {
      EventExecutorGroup group = iterator.next();
      if (!group.isShuttingDown()) {
        group.shutdownGracefully().addListener(future -> {
          if (!future.isSuccess()) {
            log.debug("shutdown of {} resulted in exception", group, future.cause());
          }
          shutdownGracefully(iterator);
        });
      }
    }
  }

}


/**
 *                                  Apache License
 *                            Version 2.0, January 2004
 *                         http://www.apache.org/licenses/
 *
 *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 *
 *    1. Definitions.
 *
 *       "License" shall mean the terms and conditions for use, reproduction,
 *       and distribution as defined by Sections 1 through 9 of this document.
 *
 *       "Licensor" shall mean the copyright owner or entity authorized by
 *       the copyright owner that is granting the License.
 *
 *       "Legal Entity" shall mean the union of the acting entity and all
 *       other entities that control, are controlled by, or are under common
 *       control with that entity. For the purposes of this definition,
 *       "control" means (i) the power, direct or indirect, to cause the
 *       direction or management of such entity, whether by contract or
 *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
 *       outstanding shares, or (iii) beneficial ownership of such entity.
 *
 *       "You" (or "Your") shall mean an individual or Legal Entity
 *       exercising permissions granted by this License.
 *
 *       "Source" form shall mean the preferred form for making modifications,
 *       including but not limited to software source code, documentation
 *       source, and configuration files.
 *
 *       "Object" form shall mean any form resulting from mechanical
 *       transformation or translation of a Source form, including but
 *       not limited to compiled object code, generated documentation,
 *       and conversions to other media types.
 *
 *       "Work" shall mean the work of authorship, whether in Source or
 *       Object form, made available under the License, as indicated by a
 *       copyright notice that is included in or attached to the work
 *       (an example is provided in the Appendix below).
 *
 *       "Derivative Works" shall mean any work, whether in Source or Object
 *       form, that is based on (or derived from) the Work and for which the
 *       editorial revisions, annotations, elaborations, or other modifications
 *       represent, as a whole, an original work of authorship. For the purposes
 *       of this License, Derivative Works shall not include works that remain
 *       separable from, or merely link (or bind by name) to the interfaces of,
 *       the Work and Derivative Works thereof.
 *
 *       "Contribution" shall mean any work of authorship, including
 *       the original version of the Work and any modifications or additions
 *       to that Work or Derivative Works thereof, that is intentionally
 *       submitted to Licensor for inclusion in the Work by the copyright owner
 *       or by an individual or Legal Entity authorized to submit on behalf of
 *       the copyright owner. For the purposes of this definition, "submitted"
 *       means any form of electronic, verbal, or written communication sent
 *       to the Licensor or its representatives, including but not limited to
 *       communication on electronic mailing lists, source code control systems,
 *       and issue tracking systems that are managed by, or on behalf of, the
 *       Licensor for the purpose of discussing and improving the Work, but
 *       excluding communication that is conspicuously marked or otherwise
 *       designated in writing by the copyright owner as "Not a Contribution."
 *
 *       "Contributor" shall mean Licensor and any individual or Legal Entity
 *       on behalf of whom a Contribution has been received by Licensor and
 *       subsequently incorporated within the Work.
 *
 *    2. Grant of Copyright License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       copyright license to reproduce, prepare Derivative Works of,
 *       publicly display, publicly perform, sublicense, and distribute the
 *       Work and such Derivative Works in Source or Object form.
 *
 *    3. Grant of Patent License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       (except as stated in this section) patent license to make, have made,
 *       use, offer to sell, sell, import, and otherwise transfer the Work,
 *       where such license applies only to those patent claims licensable
 *       by such Contributor that are necessarily infringed by their
 *       Contribution(s) alone or by combination of their Contribution(s)
 *       with the Work to which such Contribution(s) was submitted. If You
 *       institute patent litigation against any entity (including a
 *       cross-claim or counterclaim in a lawsuit) alleging that the Work
 *       or a Contribution incorporated within the Work constitutes direct
 *       or contributory patent infringement, then any patent licenses
 *       granted to You under this License for that Work shall terminate
 *       as of the date such litigation is filed.
 *
 *    4. Redistribution. You may reproduce and distribute copies of the
 *       Work or Derivative Works thereof in any medium, with or without
 *       modifications, and in Source or Object form, provided that You
 *       meet the following conditions:
 *
 *       (a) You must give any other recipients of the Work or
 *           Derivative Works a copy of this License; and
 *
 *       (b) You must cause any modified files to carry prominent notices
 *           stating that You changed the files; and
 *
 *       (c) You must retain, in the Source form of any Derivative Works
 *           that You distribute, all copyright, patent, trademark, and
 *           attribution notices from the Source form of the Work,
 *           excluding those notices that do not pertain to any part of
 *           the Derivative Works; and
 *
 *       (d) If the Work includes a "NOTICE" text file as part of its
 *           distribution, then any Derivative Works that You distribute must
 *           include a readable copy of the attribution notices contained
 *           within such NOTICE file, excluding those notices that do not
 *           pertain to any part of the Derivative Works, in at least one
 *           of the following places: within a NOTICE text file distributed
 *           as part of the Derivative Works; within the Source form or
 *           documentation, if provided along with the Derivative Works; or,
 *           within a display generated by the Derivative Works, if and
 *           wherever such third-party notices normally appear. The contents
 *           of the NOTICE file are for informational purposes only and
 *           do not modify the License. You may add Your own attribution
 *           notices within Derivative Works that You distribute, alongside
 *           or as an addendum to the NOTICE text from the Work, provided
 *           that such additional attribution notices cannot be construed
 *           as modifying the License.
 *
 *       You may add Your own copyright statement to Your modifications and
 *       may provide additional or different license terms and conditions
 *       for use, reproduction, or distribution of Your modifications, or
 *       for any such Derivative Works as a whole, provided Your use,
 *       reproduction, and distribution of the Work otherwise complies with
 *       the conditions stated in this License.
 *
 *    5. Submission of Contributions. Unless You explicitly state otherwise,
 *       any Contribution intentionally submitted for inclusion in the Work
 *       by You to the Licensor shall be under the terms and conditions of
 *       this License, without any additional terms or conditions.
 *       Notwithstanding the above, nothing herein shall supersede or modify
 *       the terms of any separate license agreement you may have executed
 *       with Licensor regarding such Contributions.
 *
 *    6. Trademarks. This License does not grant permission to use the trade
 *       names, trademarks, service marks, or product names of the Licensor,
 *       except as required for reasonable and customary use in describing the
 *       origin of the Work and reproducing the content of the NOTICE file.
 *
 *    7. Disclaimer of Warranty. Unless required by applicable law or
 *       agreed to in writing, Licensor provides the Work (and each
 *       Contributor provides its Contributions) on an "AS IS" BASIS,
 *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 *       implied, including, without limitation, any warranties or conditions
 *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
 *       PARTICULAR PURPOSE. You are solely responsible for determining the
 *       appropriateness of using or redistributing the Work and assume any
 *       risks associated with Your exercise of permissions under this License.
 *
 *    8. Limitation of Liability. In no event and under no legal theory,
 *       whether in tort (including negligence), contract, or otherwise,
 *       unless required by applicable law (such as deliberate and grossly
 *       negligent acts) or agreed to in writing, shall any Contributor be
 *       liable to You for damages, including any direct, indirect, special,
 *       incidental, or consequential damages of any character arising as a
 *       result of this License or out of the use or inability to use the
 *       Work (including but not limited to damages for loss of goodwill,
 *       work stoppage, computer failure or malfunction, or any and all
 *       other commercial damages or losses), even if such Contributor
 *       has been advised of the possibility of such damages.
 *
 *    9. Accepting Warranty or Additional Liability. While redistributing
 *       the Work or Derivative Works thereof, You may choose to offer,
 *       and charge a fee for, acceptance of support, warranty, indemnity,
 *       or other liability obligations and/or rights consistent with this
 *       License. However, in accepting such obligations, You may act only
 *       on Your own behalf and on Your sole responsibility, not on behalf
 *       of any other Contributor, and only if You agree to indemnify,
 *       defend, and hold each Contributor harmless for any liability
 *       incurred by, or claims asserted against, such Contributor by reason
 *       of your accepting any such warranty or additional liability.
 *
 *    END OF TERMS AND CONDITIONS
 *
 *    APPENDIX: How to apply the Apache License to your work.
 *
 *       To apply the Apache License to your work, attach the following
 *       boilerplate notice, with the fields enclosed by brackets "{}"
 *       replaced with your own identifying information. (Don't include
 *       the brackets!)  The text should be enclosed in the appropriate
 *       comment syntax for the file format. We also recommend that a
 *       file or class name and description of purpose be included on the
 *       same "printed page" as the copyright notice for easier
 *       identification within third-party archives.
 *
 *    Copyright 2014 Edgar Espina
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.jooby.cassandra;

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.CodecRegistry;
import com.datastax.driver.core.Configuration;
import com.datastax.driver.core.Session;
import com.datastax.driver.extras.codecs.jdk8.InstantCodec;
import com.datastax.driver.extras.codecs.jdk8.LocalDateCodec;
import com.datastax.driver.extras.codecs.jdk8.LocalTimeCodec;
import com.datastax.driver.mapping.Mapper;
import com.datastax.driver.mapping.MappingManager;
import com.datastax.driver.mapping.annotations.Accessor;
import com.google.inject.Binder;
import com.typesafe.config.Config;
import static java.util.Objects.requireNonNull;
import org.jooby.Env;
import org.jooby.Env.ServiceKey;
import org.jooby.Jooby.Module;
import org.jooby.funzy.Throwing;
import org.jooby.funzy.Try;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.List;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import java.util.function.Supplier;

/**
 *
cassandra

 *

 * The Apache Cassandra database is the right choice when
 * you need scalability and high availability without compromising performance. Linear scalability
 * and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect
 * platform for mission-critical data. Cassandra's support for replicating across multiple
 * datacenters is best-in-class, providing lower latency for your users and the peace of mind of
 * knowing that you can survive regional outages.
 *

 *
 *

 * This module offers cassandra database features via
 * Datastax Java Driver.
 *

 *
 *
exports

 *

 *
Cluster

 *
Session

 *
MappingManager

 *
Datastore

 *
Optionally a Cassandra {@link org.jooby.Session.Store}

 *

 *
 *
usage

 *

 * Via connection string:
 *

 *
{@code
 * {
 *   use(new Cassandra("cassandra://localhost/db"));
 * }
 * }

 *
 *

 * Via connection property:
 *

 *
{@code
 * {
 *   use(new Cassandra("db"));
 * }
 * }

 *
 *

 * After you install the module {@link Session}, {@link MappingManager} and {@link Datastore} are
 * ready to use.
 *

 *
 *
{@code
 * {
 *   use(new Cassandra("cassandra://localhost/db"));
 *
 *   get("/doWithSession", req -> {
 *     Session session = require(Session.class);
 *     // work with session
 *   });
 *
 *   get("/doWithMappingManager", req -> {
 *     MappingManager manager = require(MappingManager.class);
 *     Mapper<Beer> mapper = manager.mapper(Beer.class);
 *     // work with mapper;
 *   });
 *
 *   get("/doWithDatastore", req -> {
 *     Datastore ds = require(Datastore.class);
 *     // work with datastore;
 *   });
 * }
 * }

 *
 *
basic crud

 *

 * This module exports {@link MappingManager} so you are free to use a {@link Mapper}. Jooby also
 * offers the {@link Datastore} service which basically wrap a {@link Mapper} and provides
 * query/read operations.
 *

 *

 * The main advantage of {@link Datastore} over {@link Mapper} is that you require just once
 * instance
 * regardless of your number of entities, but also it provides some useful query*
 * methods.
 *

 *
 *

 * Here is a basic API on top of {@link Datastore}:
 *

 *
 *
{@code
 * {
 *
 *   use("/api/beer")
 *     .post(req -> {
 *       Datastore ds = req.require(Datastore.class);
 *       Beer beer = req.body().to(Beer.class);
 *       ds.save(beer);
 *       return beer;
 *     })
 *     .get("/:id", req -> {
 *       Datastore ds = req.require(Datastore.class);
 *       Beer beer = ds.get(Beer.class, req.param("id").value());
 *       return beer;
 *     })
 *     .get(req -> {
 *       Datastore ds = req.require(Datastore.class);
 *       return ds.query(Beer.class, "select * from beer").all();
 *     })
 *     .delete("/:id", req -> {
 *       Datastore ds = req.require(Datastore.class);
 *       ds.delete(Beer.class, req.param("id").value());
 *       return Results.noContent();
 *     });
 * }
 * }

 *
 *

 * Keep in mind your entities must be mapped as usual or as required by {@link Mapper}. A great
 * example is available
 * here
 *

 *
 *
accessors

 *

 * Accessors provide a way to map custom queries not supported by the default entity mappers.
 * Accessors are created at application startup time via {@link #accesor(Class)} method:
 *

 *
 *
{@code
 * {
 *   use(new Cassandra("cassandra://localhost/db")
 *    .accessor(UserAccessor.class)
 *   );
 *
 *   get("/users", req -> {
 *     return require(UserAccessor.class).getAll();
 *   });
 * }
 * }

 *
 *

 * The accessor can be required or injected in a MVC route.
 *

 *
 *
dse-driver

 *

 * Add the dse-driver dependency to your classpath and then:
 *

 *
 *

 * {
 *    use(new Cassandra(DseCluster::build));
 * }
 *

 *
 *

 * That's all! Now you can require/inject a DseSession.
 *

 *
 *
async

 *

 * Async? Of course!!! just use the Datastax async API:
 *

 *
 *
{@code
 * {
 *   use(new Cassandra("cassandra://localhost/db"));
 *
 *   use("/api/beer")
 *     .post(req -> {
 *       Datastore ds = req.require(Datastore.class);
 *       Beer beer = req.body().to(Beer.class);
 *       ds.saveAsync(beer);
 *       return beer;
 *     })
 *     .get("/:id", req -> {
 *       Datastore ds = req.require(Datastore.class);
 *       ListeneableFuture<Beer> beer = ds.getAsync(Beer.class, req.param("id").value());
 *       return beer;
 *     })
 *     .get(req -> {
 *       Datastore ds = req.require(Datastore.class);
 *       return ds.queryAsync(Beer.class, "select * from beer").all();
 *     })
 *     .delete("/:id", req -> {
 *       Datastore ds = req.require(Datastore.class);
 *       ds.deleteAsync(Beer.class, req.param("id").value());
 *       return Results.noContent();
 *     });
 * }
 * }

 *
 *
multiple contact points

 *

 * Multiple contact points are separated by a comma:
 *

 *
{@code
 * {
 *   use(new Casssandra("cassandra://host1,host2/db");
 * }
 * }

 *
 *
advanced configuration

 *

 * Advanced configuration is available via cluster builder callback:
 *

 *
 *
{@code
 * {
 *   use(new Casssandra("cassandra://localhost/db")
 *     .doWithClusterBuilder(builder -> {
 *       builder.withClusterName("mycluster");
 *     }));
 * }
 * }

 *
 *

 * Or via cluster callback:
 *

 *
 *
{@code
 * {
 *   use(new Casssandra("cassandra://localhost/db")
 *     .doWithCluster(cluster -> {
 *       Configuration configuration = cluster.getConfiguration();
 *       // set option
 *     }));
 * }
 * }

 *
 * @author edgar
 * @since 1.0.0.CR7
 */
public class Cassandra implements Module {

  /** The logging system. */
  private final Logger log = LoggerFactory.getLogger(getClass());

  private static final Supplier<Cluster.Builder> BUILDER = Cluster::builder;

  private BiConsumer<Cluster.Builder, Config> ccbuilder;

  private BiConsumer<Cluster, Config> cc;

  private final String db;

  @SuppressWarnings("rawtypes")

  private final List<Class> accesors = new ArrayList<>();

  private Supplier<Cluster.Builder> builder = Cluster::builder;

  /**
   * Creates a new {@link Cassandra} module.
   *
   * Conenct via connection string:
   *
   *
{@code
   * {
   *   use(new Cassandra("cassandra://localhost/db", DseCluster::builder));
   * }
   * }

   *
   * Or via property:
   *
   *
{@code
   * {
   *   use(new Cassandra("db", DseCluster::builder));
   * }
   * }

   *
   * @param db Connection string or a property with a connection String.
   * @param builder Cluster builder.
   */
  public Cassandra(final String db, final Supplier<Cluster.Builder> builder) {
    this.db = requireNonNull(db, "ContactPoint/db key required.");
    this.builder = requireNonNull(builder, "Cluster.Builder required.");
  }

  /**
   * Creates a new {@link Cassandra} module.
   *
   * Conenct via connection string:
   *
   *
{@code
   * {
   *   use(new Cassandra("cassandra://localhost/db"));
   * }
   * }

   *
   * Or via property:
   *
   *
{@code
   * {
   *   use(new Cassandra("db"));
   * }
   * }

   *
   * @param db Connection string or a property with a connection String.
   */
  public Cassandra(final String db) {
    this(db, BUILDER);
  }

  /**
   * Creates a new {@link Cassandra} module. A property db property must be present and
   * have a valid connection string.
   */
  public Cassandra(final Supplier<Cluster.Builder> builder) {
    this("db", builder);
  }

  /**
   * Creates a new {@link Cassandra} module. A property db property must be present and
   * have a valid connection string.
   */
  public Cassandra() {
    this("db");
  }

  /**
   * Register an {@link Accessor} which is accessible via require calls or dependency injection.
   *
   * @param accessor An accessor.
   * @return This module.
   */
  public Cassandra accesor(final Class<?> accessor) {
    accesors.add(accessor);
    return this;
  }

  /**
   * Configure a cluster before creating it.
   *
   * @param configurer Configurer callback.
   * @return This module.
   */
  public Cassandra doWithClusterBuilder(final BiConsumer<Cluster.Builder, Config> configurer) {
    this.ccbuilder = requireNonNull(configurer, "ClusterBuilder conf callback required.");
    return this;
  }

  /**
   * Configure a cluster before creating it.
   *
   * @param configurer Configurer callback.
   * @return This module.
   */
  public Cassandra doWithClusterBuilder(final Consumer<Cluster.Builder> configurer) {
    requireNonNull(configurer, "ClusterBuilder conf callback required.");
    return doWithClusterBuilder((b, c) -> configurer.accept(b));
  }

  /**
   * Configure a cluster after creation.
   *
   * @param configurer Configurer callback.
   * @return This module.
   */
  public Cassandra doWithCluster(final BiConsumer<Cluster, Config> configurer) {
    this.cc = requireNonNull(configurer, "Cluster conf callbackrequired.");
    return this;
  }

  /**
   * Configure a cluster after creation.
   *
   * @param configurer Configurer callback.
   * @return This module.
   */
  public Cassandra doWithCluster(final Consumer<Cluster> configurer) {
    requireNonNull(configurer, "Cluster conf callbackrequired.");
    return doWithCluster((cc, c) -> configurer.accept(cc));
  }

  @SuppressWarnings({"rawtypes", "unchecked"})
  @Override
  public void configure(final Env env, final Config conf, final Binder binder) {
    ConnectionString cstr = Try.apply(() -> ConnectionString.parse(db))
        .orElseGet(() -> ConnectionString.parse(conf.getString(db)));

    ServiceKey serviceKey = env.serviceKey();

    Throwing.Function3<Class, String, Object, Void> bind = (type, name, value) -> {
      serviceKey.generate(type, name, k -> binder.bind(k).toInstance(value));
      return null;
    };

    Cluster.Builder builder = this.builder.get()
        .addContactPoints(cstr.contactPoints())
        .withPort(cstr.port());

    // allow user configure cluster builder
    if (ccbuilder != null) {
      ccbuilder.accept(builder, conf);
    }

    log.debug("Starting {}", cstr);

    Cluster cluster = builder.build();

    // allow user configure cluster
    if (cc != null) {
      cc.accept(cluster, conf);
    }

    /** codecs */
    Configuration configuration = cluster.getConfiguration();
    CodecRegistry codecRegistry = configuration.getCodecRegistry();
    // java 8 codecs
    codecRegistry.register(
        InstantCodec.instance,
        LocalDateCodec.instance,
        LocalTimeCodec.instance);

    hierarchy(cluster.getClass(), type -> bind.apply(type, cstr.keyspace(), cluster));

    /** Session + Mapper */
    Session session = cluster.connect(cstr.keyspace());
    hierarchy(session.getClass(), type -> bind.apply(type, cstr.keyspace(), session));

    MappingManager manager = new MappingManager(session);
    bind.apply(MappingManager.class, cstr.keyspace(), manager);
    bind.apply(Datastore.class, cstr.keyspace(), new Datastore(manager));

    /** accessors */
    accesors.forEach(c -> {
      Object accessor = manager.createAccessor(c);
      binder.bind(c).toInstance(accessor);
    });

    env.router()
        .map(new CassandraMapper());

    env.onStop(() -> {
      log.debug("Stopping {}", cstr);
      Try.run(session::close)
          .onFailure(x -> log.error("session.close() resulted in exception", x));

      cluster.close();

      log.info("Stopped {}", cstr);
    });
  }

  @SuppressWarnings("rawtypes")
  static void hierarchy(final Class type, final Consumer<Class> consumer) {
    if (type != Object.class) {
      if (type.getName().startsWith("com.datastax")) {
        consumer.accept(type);
      }
      for (Class i : type.getInterfaces()) {
        hierarchy(i, consumer);
      }
      if (!type.isInterface()) {
        hierarchy(type.getSuperclass(), consumer);
      }
    }
  }

}


/**
 *                                  Apache License
 *                            Version 2.0, January 2004
 *                         http://www.apache.org/licenses/
 *
 *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 *
 *    1. Definitions.
 *
 *       "License" shall mean the terms and conditions for use, reproduction,
 *       and distribution as defined by Sections 1 through 9 of this document.
 *
 *       "Licensor" shall mean the copyright owner or entity authorized by
 *       the copyright owner that is granting the License.
 *
 *       "Legal Entity" shall mean the union of the acting entity and all
 *       other entities that control, are controlled by, or are under common
 *       control with that entity. For the purposes of this definition,
 *       "control" means (i) the power, direct or indirect, to cause the
 *       direction or management of such entity, whether by contract or
 *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
 *       outstanding shares, or (iii) beneficial ownership of such entity.
 *
 *       "You" (or "Your") shall mean an individual or Legal Entity
 *       exercising permissions granted by this License.
 *
 *       "Source" form shall mean the preferred form for making modifications,
 *       including but not limited to software source code, documentation
 *       source, and configuration files.
 *
 *       "Object" form shall mean any form resulting from mechanical
 *       transformation or translation of a Source form, including but
 *       not limited to compiled object code, generated documentation,
 *       and conversions to other media types.
 *
 *       "Work" shall mean the work of authorship, whether in Source or
 *       Object form, made available under the License, as indicated by a
 *       copyright notice that is included in or attached to the work
 *       (an example is provided in the Appendix below).
 *
 *       "Derivative Works" shall mean any work, whether in Source or Object
 *       form, that is based on (or derived from) the Work and for which the
 *       editorial revisions, annotations, elaborations, or other modifications
 *       represent, as a whole, an original work of authorship. For the purposes
 *       of this License, Derivative Works shall not include works that remain
 *       separable from, or merely link (or bind by name) to the interfaces of,
 *       the Work and Derivative Works thereof.
 *
 *       "Contribution" shall mean any work of authorship, including
 *       the original version of the Work and any modifications or additions
 *       to that Work or Derivative Works thereof, that is intentionally
 *       submitted to Licensor for inclusion in the Work by the copyright owner
 *       or by an individual or Legal Entity authorized to submit on behalf of
 *       the copyright owner. For the purposes of this definition, "submitted"
 *       means any form of electronic, verbal, or written communication sent
 *       to the Licensor or its representatives, including but not limited to
 *       communication on electronic mailing lists, source code control systems,
 *       and issue tracking systems that are managed by, or on behalf of, the
 *       Licensor for the purpose of discussing and improving the Work, but
 *       excluding communication that is conspicuously marked or otherwise
 *       designated in writing by the copyright owner as "Not a Contribution."
 *
 *       "Contributor" shall mean Licensor and any individual or Legal Entity
 *       on behalf of whom a Contribution has been received by Licensor and
 *       subsequently incorporated within the Work.
 *
 *    2. Grant of Copyright License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       copyright license to reproduce, prepare Derivative Works of,
 *       publicly display, publicly perform, sublicense, and distribute the
 *       Work and such Derivative Works in Source or Object form.
 *
 *    3. Grant of Patent License. Subject to the terms and conditions of
 *       this License, each Contributor hereby grants to You a perpetual,
 *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 *       (except as stated in this section) patent license to make, have made,
 *       use, offer to sell, sell, import, and otherwise transfer the Work,
 *       where such license applies only to those patent claims licensable
 *       by such Contributor that are necessarily infringed by their
 *       Contribution(s) alone or by combination of their Contribution(s)
 *       with the Work to which such Contribution(s) was submitted. If You
 *       institute patent litigation against any entity (including a
 *       cross-claim or counterclaim in a lawsuit) alleging that the Work
 *       or a Contribution incorporated within the Work constitutes direct
 *       or contributory patent infringement, then any patent licenses
 *       granted to You under this License for that Work shall terminate
 *       as of the date such litigation is filed.
 *
 *    4. Redistribution. You may reproduce and distribute copies of the
 *       Work or Derivative Works thereof in any medium, with or without
 *       modifications, and in Source or Object form, provided that You
 *       meet the following conditions:
 *
 *       (a) You must give any other recipients of the Work or
 *           Derivative Works a copy of this License; and
 *
 *       (b) You must cause any modified files to carry prominent notices
 *           stating that You changed the files; and
 *
 *       (c) You must retain, in the Source form of any Derivative Works
 *           that You distribute, all copyright, patent, trademark, and
 *           attribution notices from the Source form of the Work,
 *           excluding those notices that do not pertain to any part of
 *           the Derivative Works; and
 *
 *       (d) If the Work includes a "NOTICE" text file as part of its
 *           distribution, then any Derivative Works that You distribute must
 *           include a readable copy of the attribution notices contained
 *           within such NOTICE file, excluding those notices that do not
 *           pertain to any part of the Derivative Works, in at least one
 *           of the following places: within a NOTICE text file distributed
 *           as part of the Derivative Works; within the Source form or
 *           documentation, if provided along with the Derivative Works; or,
 *           within a display generated by the Derivative Works, if and
 *           wherever such third-party notices normally appear. The contents
 *           of the NOTICE file are for informational purposes only and
 *           do not modify the License. You may add Your own attribution
 *           notices within Derivative Works that You distribute, alongside
 *           or as an addendum to the NOTICE text from the Work, provided
 *           that such additional attribution notices cannot be construed
 *           as modifying the License.
 *
 *       You may add Your own copyright statement to Your modifications and
 *       may provide additional or different license terms and conditions
 *       for use, reproduction, or distribution of Your modifications, or
 *       for any such Derivative Works as a whole, provided Your use,
 *       reproduction, and distribution of the Work otherwise complies with
 *       the conditions stated in this License.
 *
 *    5. Submission of Contributions. Unless You explicitly state otherwise,
 *       any Contribution intentionally submitted for inclusion in the Work
 *       by You to the Licensor shall be under the terms and conditions of
 *       this License, without any additional terms or conditions.
 *       Notwithstanding the above, nothing herein shall supersede or modify
 *       the terms of any separate license agreement you may have executed
 *       with Licensor regarding such Contributions.
 *
 *    6. Trademarks. This License does not grant permission to use the trade
 *       names, trademarks, service marks, or product names of the Licensor,
 *       except as required for reasonable and customary use in describing the
 *       origin of the Work and reproducing the content of the NOTICE file.
 *
 *    7. Disclaimer of Warranty. Unless required by applicable law or
 *       agreed to in writing, Licensor provides the Work (and each
 *       Contributor provides its Contributions) on an "AS IS" BASIS,
 *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 *       implied, including, without limitation, any warranties or conditions
 *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
 *       PARTICULAR PURPOSE. You are solely responsible for determining the
 *       appropriateness of using or redistributing the Work and assume any
 *       risks associated with Your exercise of permissions under this License.
 *
 *    8. Limitation of Liability. In no event and under no legal theory,
 *       whether in tort (including negligence), contract, or otherwise,
 *       unless required by applicable law (such as deliberate and grossly
 *       negligent acts) or agreed to in writing, shall any Contributor be
 *       liable to You for damages, including any direct, indirect, special,
 *       incidental, or consequential damages of any character arising as a
 *       result of this License or out of the use or inability to use the
 *       Work (including but not limited to damages for loss of goodwill,
 *       work stoppage, computer failure or malfunction, or any and all
 *       other commercial damages or losses), even if such Contributor
 *       has been advised of the possibility of such damages.
 *
 *    9. Accepting Warranty or Additional Liability. While redistributing
 *       the Work or Derivative Works thereof, You may choose to offer,
 *       and charge a fee for, acceptance of support, warranty, indemnity,
 *       or other liability obligations and/or rights consistent with this
 *       License. However, in accepting such obligations, You may act only
 *       on Your own behalf and on Your sole responsibility, not on behalf
 *       of any other Contributor, and only if You agree to indemnify,
 *       defend, and hold each Contributor harmless for any liability
 *       incurred by, or claims asserted against, such Contributor by reason
 *       of your accepting any such warranty or additional liability.
 *
 *    END OF TERMS AND CONDITIONS
 *
 *    APPENDIX: How to apply the Apache License to your work.
 *
 *       To apply the Apache License to your work, attach the following
 *       boilerplate notice, with the fields enclosed by brackets "{}"
 *       replaced with your own identifying information. (Don't include
 *       the brackets!)  The text should be enclosed in the appropriate
 *       comment syntax for the file format. We also recommend that a
 *       file or class name and description of purpose be included on the
 *       same "printed page" as the copyright notice for easier
 *       identification within third-party archives.
 *
 *    Copyright 2014 Edgar Espina
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.jooby.json;

import static java.util.Objects.requireNonNull;

import java.util.function.BiConsumer;
import java.util.function.Consumer;

import javax.json.Json;
import javax.json.bind.Jsonb;
import javax.json.bind.JsonbBuilder;
import javax.json.bind.JsonbConfig;

import org.jooby.Env;
import org.jooby.Jooby;
import org.jooby.MediaType;
import org.jooby.Parser;
import org.jooby.Renderer;

import com.google.inject.Binder;
import com.google.inject.multibindings.Multibinder;
import com.typesafe.config.Config;

/**
 * JSON support via Yasson library.
 *
 *
exposes

 *
 *

 *
A {@link Jsonb}

 *
A {@link Parser}

 *
A {@link Renderer}

 *

 *
 *
usage

 *
 *

 * {
 *   use(new Yasson());
 *
 *   // sending
 *   get("/my-api", req {@literal ->} new MyObject());
 *
 *   // receiving a json body
 *   post("/my-api", req {@literal ->} {
 *     MyObject obj = req.body(MyObject.class);
 *     return obj;
 *   });
 *
 *   // direct access to Jsonb
 *   get("/access", req {@literal ->} {
 *     Jsonb jsonb = req.require(Jsonb.class);
 *     // ...
 *   });
 * }
 *

 *
 *
configuration

 *
 *

 * If you need a special setting or configuration for your {@link Jsonb}:
 *

 *
 *

 * {
 *   use(new Yasson().doWith(builder {@literal ->} {
 *     builder.withFormatting(true);
 *     // ...
 *   });
 * }
 *

 *
 * @author Daniel Dias
 * @since 1.6.0
 */
public class Yasson implements Jooby.Module  {

  private final MediaType type;

  private BiConsumer<JsonbConfig, Config> configurer;

  private boolean raw;

  /**
   * Creates a new {@link Jsonb}.
   *
   * @param type {@link MediaType} to use.
   */
  public Yasson(final MediaType type) {
    this.type = requireNonNull(type, "Media type is required.");
  }

  /**
   * Creates a new {@link Jsonb} and set type to: {@link MediaType#json}.
   *
   */
  public Yasson() {
    this(MediaType.json);
  }

  /**
   * Configurer callback.
   *
   *

   * {
   *   use(new Yasson().doWith(builder {@literal ->} {
   *     builder.withFormatting(true);
   *     // ...
   *   });
   * }
   *

   *
   * @param configurer A callback.
   * @return This instance.
   */
  public Yasson doWith(final BiConsumer<JsonbConfig, Config> configurer) {
    this.configurer = requireNonNull(configurer, "Configurer callback is required.");
    return this;
  }

  /**
   * Configurer callback.
   *
   *

   * {
   *   use(new Yasson().doWith((builder, config) {@literal ->} {
   *     builder.withFormatting(true);
   *     // ...
   *   });
   * }
   *

   *
   * @param configurer A callback.
   * @return This instance.
   */
  public Yasson doWith(final Consumer<JsonbConfig> configurer) {
    requireNonNull(configurer, "Configurer callback is required.");
    this.configurer = (jsonConfig, conf) -> configurer.accept(jsonConfig);
    return this;
  }

  @Override
  public void configure(final Env env, final Config config, final Binder binder) {
    JsonbConfig jsonbConfig = new JsonbConfig();

    if (configurer != null) {
      configurer.accept(jsonbConfig, config);
    }

    Jsonb jsonb = JsonbBuilder.create(jsonbConfig);

    binder.bind(Jsonb.class).toInstance(jsonb);

    Multibinder.newSetBinder(binder, Parser.class).addBinding().toInstance(new YassonParser(type, jsonb));

    YassonRenderer renderer = raw ? new YassonRawRenderer(type, jsonb) : new YassonRenderer(type, jsonb);

    Multibinder.newSetBinder(binder, Renderer.class).addBinding().toInstance(renderer);
  }

  /**
   * Add support raw string json responses:
   *
   *
{@code
   * {
   *   get("/raw", () -> {
   *     return "{\"raw\": \"json\"}";
   *   });
   * }
   * }

   *
   * @return This module.
   */
  public Yasson raw() {
      raw = true;
      return this;
  }
}