# Copyright (2024) Tsinghua University, Bytedance Ltd. and/or its affiliates
#
# 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.

import json
import logging

from omegaconf import OmegaConf


class Config:
    def __init__(self, args):
        self.config = {}

        self.args = args
        user_config = self._build_opt_list(self.args.options)
        config = OmegaConf.load(self.args.cfg_path)
        config = OmegaConf.merge(config, user_config)
        self.config = config

    def _convert_to_dot_list(self, opts):
        if opts is None:
            opts = []

        if len(opts) == 0:
            return opts

        has_equal = opts[0].find("=") != -1

        if has_equal:
            return opts

        return [(opt + "=" + value) for opt, value in zip(opts[0::2], opts[1::2])]

    def _build_opt_list(self, opts):
        opts_dot_list = self._convert_to_dot_list(opts)
        return OmegaConf.from_dotlist(opts_dot_list)

    def pretty_print(self):
        logging.info("\n=====  Running Parameters    =====")
        logging.info(self._convert_node_to_json(self.config.run))

        logging.info("\n======  Dataset Attributes  ======")
        logging.info(self._convert_node_to_json(self.config.datasets))

        logging.info(f"\n======  Model Attributes  ======")
        logging.info(self._convert_node_to_json(self.config.model))

    def _convert_node_to_json(self, node):
        container = OmegaConf.to_container(node, resolve=True)
        return json.dumps(container, indent=4, sort_keys=True)

    def to_dict(self):
        return OmegaConf.to_container(self.config)