#!/bin/sh

# Copyright (c) 2023 Emmma Tebibyte
# SPDX-License-Identifier: AGPL-3.0-or-later

# Cramo is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
# 
# Cramo is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see https://www.gnu.org/licenses/.


argv0="$0"

logfile="log"

case "$1" in
  "-c" )
    while true; do
      shift

      case "$1" in
        "*.opus" )
          for i in *.opus; do
            ffmpeg -v 40 -i "$i" -c:a mp3 "${i%.*}.mp3" >> $logfile 2>&1
          done
        ;;

        "*.wav" )
          for i in *.wav; do
            ffmpeg -v 40 -i "$i" -c:a flac "${i%.*}.flac" >> $logfile 2>&1
          done
        ;;
        
      false )
        break
      ;;
      esac
    done

    exit 0
  ;;

  "sc" )
    if test -z "$2"; then
      while true; do
        shift

        case "$1" in
          "*" )
          scdl --original-name --debug -l $1 >> $logfile 2>&1
        ;;

        false )
          exit 0
        ;;
        esac
      done
    else
      printf "Usage: %s [-c] [sc/yt]\n" "$argv0" 1>&2
      exit 64 # sysexits(3) EX_USAGE 
    fi

    exit 0
  ;;

  "yt" )
    yt-dlp -vx --split-chapters -o \
      "chapter:%(fulltitle)s - %(section_number)s %(section_title)s.%(ext)s" \
      $1 --audio-quality 0 >> $logfile 2>&1
    exit 0
  ;;

  false )
    printf "Usage: %s [-c] [sc/yt]\n" "$argv0" 1>&2
    exit 64 # sysexits(3) EX_USAGE 
  ;;
esac