# Copyright 2018-2019 CRS4
#
# 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.

"""\
Select radar images in the time range of each meteo sim.

Works on NetCDF datasets created with tdm grib2cf.
"""
import datetime
import argparse
import os
import sys

import tdm.radar.utils as utils
import cdo

basename = os.path.basename
join = os.path.join
strftime = datetime.datetime.strftime
strptime = datetime.datetime.strptime

FMT = "%Y-%m-%dT%H:%M:%S"
MODELS = frozenset(("bolam", "moloch"))


# E.g., bolam_2018073001_6155f56b-40b1-4b9f-bad7-e785940b2076.nc
def get_paths(nc_dir):
    rval = {}
    for name in os.listdir(nc_dir):
        tag, ext = os.path.splitext(name)
        if ext != ".nc":
            continue
        parts = tag.split("_")
        if parts[0] not in MODELS:
            continue
        ts = parts[1]
        if ts == "IFS":
            ts = parts[2]
        date = strptime(ts, "%Y%m%d%H").date()
        date_str = datetime.date.strftime(date, "%Y-%m-%d")
        rval.setdefault(date_str, []).append(join(nc_dir, name))
    return rval


def get_dt_range(cdo_obj, nc):
    out = cdo_obj.showtimestamp(input=nc)[0]
    dts = [strptime(_, FMT) for _ in out.split()]
    return min(dts), max(dts)


def main(args):
    nc_paths = get_paths(args.sim_dir)
    c = cdo.Cdo()
    for date_str, nc_list in nc_paths.items():
        print("%s IN:" % date_str)
        start_list, stop_list = [], []
        for nc in nc_list:
            start, stop = get_dt_range(c, nc)
            print("  %s (%s to %s)" % (basename(nc), start, stop))
            start_list.append(start)
            stop_list.append(stop)
        start, stop = min(start_list), max(stop_list)
        out_subd = join(args.out_dir, date_str)
        print("%s OUT:" % date_str)
        print("  %s (%s to %s)" % (date_str, start, stop))
        sys.stdout.flush()
        try:
            os.makedirs(out_subd)
        except FileExistsError:
            pass
        pairs = utils.get_images(args.radar_dir, after=start, before=stop)
        for dt, src in pairs:
            out_name = "%s.png" % strftime(dt, utils.FMT)
            dst = join(out_subd, out_name)
            with open(src, "rb") as fi, open(dst, "wb") as fo:
                fo.write(fi.read())
        print()


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("sim_dir", metavar="NETCDF_SIM_DIR")
    parser.add_argument("radar_dir", metavar="PNG_RADAR_DIR")
    parser.add_argument("-o", "--out-dir", metavar="DIR", default=os.getcwd())
    main(parser.parse_args(sys.argv[1:]))

# Copyright 2018-2019 CRS4
#
# 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.

"""\
Select radar images in the time range of each meteo sim.

Works on NetCDF datasets created with tdm grib2cf.
"""
import datetime
import argparse
import os
import sys

import tdm.radar.utils as utils
import cdo

basename = os.path.basename
join = os.path.join
strftime = datetime.datetime.strftime
strptime = datetime.datetime.strptime

FMT = "%Y-%m-%dT%H:%M:%S"
MODELS = frozenset(("bolam", "moloch"))


# E.g., bolam_2018073001_6155f56b-40b1-4b9f-bad7-e785940b2076.nc
def get_paths(nc_dir):
    rval = {}
    for name in os.listdir(nc_dir):
        tag, ext = os.path.splitext(name)
        if ext != ".nc":
            continue
        parts = tag.split("_")
        if parts[0] not in MODELS:
            continue
        ts = parts[1]
        if ts == "IFS":
            ts = parts[2]
        date = strptime(ts, "%Y%m%d%H").date()
        date_str = datetime.date.strftime(date, "%Y-%m-%d")
        rval.setdefault(date_str, []).append(join(nc_dir, name))
    return rval


def get_dt_range(cdo_obj, nc):
    out = cdo_obj.showtimestamp(input=nc)[0]
    dts = [strptime(_, FMT) for _ in out.split()]
    return min(dts), max(dts)


def main(args):
    nc_paths = get_paths(args.sim_dir)
    c = cdo.Cdo()
    for date_str, nc_list in nc_paths.items():
        print("%s IN:" % date_str)
        start_list, stop_list = [], []
        for nc in nc_list:
            start, stop = get_dt_range(c, nc)
            print("  %s (%s to %s)" % (basename(nc), start, stop))
            start_list.append(start)
            stop_list.append(stop)
        start, stop = min(start_list), max(stop_list)
        out_subd = join(args.out_dir, date_str)
        print("%s OUT:" % date_str)
        print("  %s (%s to %s)" % (date_str, start, stop))
        sys.stdout.flush()
        try:
            os.makedirs(out_subd)
        except FileExistsError:
            pass
        pairs = utils.get_images(args.radar_dir, after=start, before=stop)
        for dt, src in pairs:
            out_name = "%s.png" % strftime(dt, utils.FMT)
            dst = join(out_subd, out_name)
            with open(src, "rb") as fi, open(dst, "wb") as fo:
                fo.write(fi.read())
        print()


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument("sim_dir", metavar="NETCDF_SIM_DIR")
    parser.add_argument("radar_dir", metavar="PNG_RADAR_DIR")
    parser.add_argument("-o", "--out-dir", metavar="DIR", default=os.getcwd())
    main(parser.parse_args(sys.argv[1:]))

# Copyright 2018-2019 CRS4 # # 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. \ Select radar images in the time range of each meteo sim.  Works on NetCDF datasets created with tdm grib2cf. # E.g., bolam_2018073001_6155f56b-40b1-4b9f-bad7-e785940b2076.nc