#!/usr/bin/env bash
# Download Tafsir Gooya (قطره چکانی) RAR archives, extract with password, delete RARs.
# Usage: AUDIO_DIR=/data/audio ./scripts/fetch-audio.sh
#        or: ./scripts/fetch-audio.sh /path/to/audio
set -euo pipefail

AUDIO_DIR="${1:-${AUDIO_DIR:-/data/audio}}"
PASSWORD="${RAR_PASSWORD:-www.p30download.com}"
BASE_URL="https://pdn.sharezilla.ir/d/audio"
WORKDIR="${AUDIO_DIR}/.download"
mkdir -p "$AUDIO_DIR" "$WORKDIR"

need() { command -v "$1" >/dev/null 2>&1 || { echo "missing dependency: $1" >&2; exit 1; }; }
need curl
if ! command -v unrar >/dev/null 2>&1 && ! command -v 7z >/dev/null 2>&1; then
  echo "need unrar or 7z" >&2
  exit 1
fi

# slug list matching sharezilla filenames
declare -a SLUGS=(
  "001.Tafsir.Gooya.Hamd"
  "002.Tafsir.Gooya.Baqara"
  "003.Tafsir.Gooya.Ale.imran"
  "004.Tafsir.Gooya.Nisa"
  "005.Tafsir.Gooya.Maeda"
  "006.Tafsir.Gooya.Anaam"
  "007.Tafsir.Gooya.Araf"
  "008.Tafsir.Gooya.Anfal"
  "009.Tafsir.Gooya.Tawba"
  "010.Tafsir.Gooya.Yunus"
  "011.Tafsir.Gooya.Hud"
  "012.Tafsir.Gooya.Yusuf"
  "013.Tafsir.Gooya.Rad"
  "014.Tafsir.Gooya.Ibrahim"
  "015.Tafsir.Gooya.Hijr"
  "016.Tafsir.Gooya.Nahl"
  "017.Tafsir.Gooya.Isra"
  "018.Tafsir.Gooya.Kahf"
  "019.Tafsir.Gooya.Maryam"
  "020.Tafsir.Gooya.Taha"
  "021.Tafsir.Gooya.Anbiya"
  "022.Tafsir.Gooya.Hajj"
  "023.Tafsir.Gooya.Mumenoon"
  "024.Tafsir.Gooya.Noor"
  "025.Tafsir.Gooya.Furqan"
  "026.Tafsir.Gooya.Shuara"
  "027.Tafsir.Gooya.Naml"
  "028.Tafsir.Gooya.Qasas"
  "029.Tafsir.Gooya.Ankaboot"
  "030.Tafsir.Gooya.Room"
  "031.Tafsir.Gooya.Luqman"
  "032.Tafsir.Gooya.Sajda"
  "033.Tafsir.Gooya.Ahzab"
  "034.Tafsir.Gooya.Saba"
  "035.Tafsir.Gooya.Fatir"
  "036.Tafsir.Gooya.Yaseen"
  "037.Tafsir.Gooya.Saaffat"
  "038.Tafsir.Gooya.Sad"
  "039.Tafsir.Gooya.Zumar"
  "040.Tafsir.Gooya.Ghafir"
  "041.Tafsir.Gooya.Fussilat"
  "042.Tafsir.Gooya.Shura"
  "043.Tafsir.Gooya.Zukhruf"
  "044.Tafsir.Gooya.Dukhan"
  "045.Tafsir.Gooya.Jathiya"
  "046.Tafsir.Gooya.Ahqaf"
  "047.Tafsir.Gooya.Muhammad"
  "048.Tafsir.Gooya.Fath"
  "049.Tafsir.Gooya.Hujaraat"
  "050.Tafsir.Gooya.Qaf"
  "051.Tafsir.Gooya.Dhariyat"
  "052.Tafsir.Gooya.Tur"
  "053.Tafsir.Gooya.Najm"
  "054.Tafsir.Gooya.Qamar"
  "055.Tafsir.Gooya.Ar-Rahman"
  "056.Tafsir.Gooya.Waqia"
  "057.Tafsir.Gooya.Hadid"
  "058.Tafsir.Gooya.Mujadila"
  "059.Tafsir.Gooya.Hashr"
  "060.Tafsir.Gooya.Mumtahina"
  "061.Tafsir.Gooya.Saff"
  "062.Tafsir.Gooya.Jumua"
  "063.Tafsir.Gooya.Munafiqoon"
  "064.Tafsir.Gooya.Taghabun"
  "065.Tafsir.Gooya.Talaq"
  "066.Tafsir.Gooya.Tahrim"
  "067.Tafsir.Gooya.Mulk"
  "068.Tafsir.Gooya.Qalam"
  "069.Tafsir.Gooya.Haaqqa"
  "070.Tafsir.Gooya.Maarij"
  "071.Tafsir.Gooya.Nooh"
  "072.Tafsir.Gooya.Jinn"
  "073.Tafsir.Gooya.Muzzammil"
  "074.Tafsir.Gooya.muddaththir"
  "075.Tafsir.Gooya.Qiyama"
  "076.Tafsir.Gooya.Insan"
  "077.Tafsir.Gooya.Mursalat"
  "078.Tafsir.Gooya.Naba"
  "079.Tafsir.Gooya.Naziat"
  "080.Tafsir.Gooya.Abasa"
  "081.Tafsir.Gooya.Takwir"
  "082.Tafsir.Gooya.Infitar"
  "083.Tafsir.Gooya.Mutaffifin"
  "084.Tafsir.Gooya.Inshiqaq"
  "085.Tafsir.Gooya.Brooj"
  "086.Tafsir.Gooya.Tariq"
  "087.Tafsir.Gooya.Ala"
  "088.Tafsir.Gooya.Ghashiya"
  "089.Tafsir.Gooya.Fajr"
  "090.Tafsir.Gooya.Balad"
  "091.Tafsir.Gooya.Shams"
  "092.Tafsir.Gooya.Lail"
  "093.Tafsir.Gooya.Dhuha"
  "094.Tafsir.Gooya.Inshirah"
  "095.Tafsir.Gooya.Tin"
  "096.Tafsir.Gooya.Alaq"
  "097.Tafsir.Gooya.Qadr"
  "098.Tafsir.Gooya.Bayyina"
  "099.Tafsir.Gooya.Zalzala"
  "100.Tafsir.Gooya.Adiyat"
  "101.Tafsir.Gooya.Qaria"
  "102.Tafsir.Gooya.Takathur"
  "103.Tafsir.Gooya.Asr"
  "104.Tafsir.Gooya.Humaza"
  "105.Tafsir.Gooya.Fil"
  "106.Tafsir.Gooya.Quarish"
  "107.Tafsir.Gooya.Maun"
  "108.Tafsir.Gooya.kauther"
  "109.Tafsir.Gooya.Kafiroon"
  "110.Tafsir.Gooya.Nasr"
  "111.Tafsir.Gooya.Masad"
  "112.Tafsir.Gooya.Ikhlas"
  "113.Tafsir.Gooya.Falaq"
  "114.Tafsir.Gooya.Nas"
)

extract_one() {
  local rar="$1"
  local dest="$2"
  mkdir -p "$dest"
  if command -v unrar >/dev/null 2>&1; then
    unrar x -o+ -p"${PASSWORD}" "$rar" "$dest/"
  else
    7z x -y "-p${PASSWORD}" "-o${dest}" "$rar"
  fi
}

for slug in "${SLUGS[@]}"; do
  num="${slug%%.*}"
  out_dir="${AUDIO_DIR}/${num}"
  # skip if already has audio
  if find "$out_dir" -type f \( -iname '*.mp3' -o -iname '*.m4a' -o -iname '*.ogg' \) 2>/dev/null | grep -q .; then
    echo "==> skip ${num} (already extracted)"
    continue
  fi

  rar="${WORKDIR}/${slug}.rar"
  url="${BASE_URL}/${slug}.rar"
  echo "==> download ${slug}"
  curl -fL --retry 5 --retry-delay 3 -o "$rar" "$url"

  echo "==> extract ${slug} -> ${out_dir}"
  extract_one "$rar" "$out_dir"
  rm -f "$rar"
  echo "==> done ${num}"
done

rmdir "$WORKDIR" 2>/dev/null || true
echo "audio import finished under ${AUDIO_DIR}"
find "$AUDIO_DIR" -type f \( -iname '*.mp3' -o -iname '*.m4a' \) | wc -l