import argparse
  import sys

  from utils import SubCommandRunner

  import core.data

  def filter_file(file, filter, outfile):
      file_path = file
      filter_path = filter
      file_data = core.data.read_id_values(file_path)

      filter_data = core.data.read_id_values(filter_path)

  
      with open(outfile, "w") as out:
          for id_ in filter_data:
              core.data.write_line(id_, file_data[id_], out)
          
      

  
  def convert(file, type_from, type):

      pass

  def utt2dur(wavscp: str, outfile: str):
      
      import wave
      import contextlib
  
      with open(wavscp, "r") as f, open(outfile, "w") as of:
          for line in f:
              splited = line.replace("
  ", "").split(" ")
              id_ = splited[0]
              wav_ = splited[1]
              duration = 0
              
              with contextlib.closing(wave.open(wav_,'r')) as wav_f:
                  frames = wav_f.getnframes()
                  rate = wav_f.getframerate()
                  duration = frames / float(rate)
              
              of.write(f"{id_} {duration}
  ")

  
  if __name__ == "__main__":

      # Main parser
      parser = argparse.ArgumentParser(description="manage files")
      subparsers = parser.add_subparsers(title="actions")
  
      # Filter ids
      parser_filter = subparsers.add_parser("filter", help="filter a file")
      parser_filter.add_argument("--file", type=str, help="path of the file to filter", required=True)
      parser_filter.add_argument("--filter", type=str, help="filter file [id_from] [id_to]", required=True)
      parser_filter.add_argument("--outfile", type=str, help="output file", required=True)
      parser_filter.set_defaults(which="filter")
  
      # Convert
      parser_convert = subparsers.add_parser("convert", help="convert a file")
      parser_convert.add_argument("--file", type=str, help="...", required=True)
      parser_convert.add_argument("--type-from", type=str, choices=["old-masseffect", "new-masseffect"], help="...", required=True)
      parser_convert.add_argument("--type", choices=["old-masseffect", "new-masseffect"], required=True)
      parser_convert.set_defaults(which="convert")

      # utt2dur
      parser_utt2dur = subparsers.add_parser("utt2dur", help="generate utt2dur file")
      parser_utt2dur.add_argument("--wavscp", type=str, help="wav file", required=True)
      parser_utt2dur.add_argument("--outfile", type=str, default="utt2dur", help="output file")
      parser_utt2dur.set_defaults(which="utt2dur")
  
      # TODO: utt2label_to_label2utt
  
      # TODO: label2utt_to_utt2label

      # Parse
      args = parser.parse_args()
  
      # Run commands

      runner = SubCommandRunner({
          "convert" : convert,
          "filter": filter_file,

          "utt2dur": utt2dur

      })
  
      runner.run(args.which, args.__dict__, remove="which")