#!/usr/bin/env bash

set -ex

if [ "$1" == "--help" ]; then
    echo "Usage: $0 [URL] [FORMAT] [EXTRA]"
    echo "Formate: opus/flac/m4a/mp4/video/hd/fullhd/4k/bestaudio"
    echo "Beispiel für Unterordner: -o '%(channel)s/%(playlist_title)s/%(title)s.%(ext)s'"
    exit 0
fi

url="$1"
format="$2"
extra="$3"

# Abfragen für interaktive Eingaben
[[ -z "${url}" ]] && read -p "URL: " url
[[ -z "${format}" ]] && read -p "Format [opus/flac/m4a/mp4/video/hd/fullhd/4k/bestaudio]: " format

# Abfrage für Various Artists
read -p "Album als Playlist Title setzen? [Y/n] " title
if [[ "$title" != "n" ]]; then
    album_metadata="--parse-metadata playlist_title:%(album)s"
fi

# Abfrage für Cookies
read -p "Cookies aus cookies.txt verwenden? [Y/n] " cookies
if [[ "$cookies" != "n" ]]; then
    cookies_cmd="--cookies cookies.txt"
fi

# Abfrage für Unterordner-Struktur
read -p "Unterordner nach Kanal erstellen? [Y/n] " folders
if [[ "$folders" != "n" ]]; then
    output_template="-o %(channel)s/%(title)s.%(ext)s"
fi

# Abfrage für Download-Archiv
read -p "Download-Archiv verwenden? [Y/n] " use_archive
if [[ "$use_archive" != "n" ]]; then
    read -p "Dateiname für Download-Archiv angeben [download-archive.txt]: " archive_file
    archive_file=${archive_file:-download-archive.txt}
    archive_cmd="--download-archive $archive_file"
fi

# Abfrage für Playlist-Start
read -p "Ab welchem Playlist-Eintrag soll heruntergeladen werden? [Standard: 1]: " playlist_start
if [[ -n "$playlist_start" ]]; then
    playlist_start_cmd="--playlist-start $playlist_start"
fi

# Format-Spezifikationen
case "$format" in
    opus)
        format_cmd="-f ba --audio-format opus --format-sort abr,codec"
        audio="-x"
        quality="--audio-quality 0"
        ;;
    flac)
        format_cmd="-f ba --audio-format flac --format-sort abr,codec"
        audio="-x"
        quality="--audio-quality 0"
        ;;
    m4a)
        format_cmd="--audio-format m4a"
        audio="-x"
        ;;
    mp4)
        format_cmd="--audio-format mp4"
        audio="-x"
        ;;
    video)
        format_cmd="-S res:480 -f bv+ba/b"
        ;;
    hd)
        format_cmd="-S res:720 -f bv+ba/b"
        ;;
    fullhd)
        format_cmd="-S res:1080 -f bv+ba/b"
        ;;
    4k)
        format_cmd="-S res:2160 -f bv+ba/b"
        ;;
    bestaudio)
        format_cmd="-f bestaudio"
        ;;
    *)
        format_cmd=""
        audio=""
        quality=""
        ;;
esac

# Hauptbefehl mit allen Optionen
yt-dlp \
  -i \
  -c \
  --socket-timeout 10000 \
  --force-ipv4 \
  --restrict-filenames \
  --embed-thumbnail \
  --embed-metadata \
  $album_metadata \
  $cookies_cmd \
  ${output_template} \
  --match-filter "!was_live" \
  $format_cmd \
  $audio \
  $quality \
  ${archive_cmd} \
  ${playlist_start_cmd} \
  -v \
  "$url" \
  ${extra}