#!/usr/bin/env bash
# Baut die zwei Album-Downloads (DE + EN) reproduzierbar:
#   Cover (Foto quadr. + Wortmarke) → ID3-Tags + eingebettetes Cover → ZIP mit Liner Notes.
# Quelle: die committeten MP3s in backend/static/sounds/ + ein Hi-Res-Foto.
# Ausgabe: backend/static/downloads/ban-yaro-album-{de,en}.zip + img/banyaro/album-thumb.jpg
# Benötigt: ImageMagick (magick), ffmpeg, zip.  Aufruf: make album  (oder bash tools/album-build/build.sh)
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
SND="$ROOT/backend/static/sounds"
PHOTO="$ROOT/backend/static/img/banyaro/hires/banyaro_fruehling_playdate_hires.jpg"
FONT="/System/Library/Fonts/Supplemental/Arial Bold.ttf"
BUILD="$ROOT/tools/album-build"
DIST="$BUILD/dist"
DL="$ROOT/backend/static/downloads"
IMG="$ROOT/backend/static/img/banyaro"

rm -rf "$DIST"; mkdir -p "$DIST" "$DL" "$IMG"

# --- 1) Cover (quadratischer Crop auf die Hunde + Verlauf unten + Wortmarke) ---
make_cover() {  # $1=subtitle  $2=outfile
  magick "$PHOTO" -auto-orient -crop 2648x2648+551+0 +repage -resize 2000x2000 \
    \( -size 2000x950 gradient:none-'rgba(0,0,0,0.80)' \) -gravity south -compose over -composite \
    -gravity south -font "$FONT" -kerning 10 \
    -fill 'rgba(0,0,0,0.55)' -pointsize 168 -annotate +4+254 "BAN YARO" \
    -fill white               -pointsize 168 -annotate +0+250 "BAN YARO" \
    -kerning 7 -fill 'rgba(255,255,255,0.92)' -pointsize 60 -annotate +0+160 "$1" \
    -quality 90 "$2"
}
make_cover "DAS ALBUM · 7 SONGS" "$DIST/cover-de.jpg"
make_cover "THE ALBUM · 7 SONGS" "$DIST/cover-en.jpg"
# Eingebettetes Albumart kleiner halten (sonst blähen sich die MP3s auf)
magick "$DIST/cover-de.jpg" -resize 800x800 -quality 85 "$DIST/art-de.jpg"
magick "$DIST/cover-en.jpg" -resize 800x800 -quality 85 "$DIST/art-en.jpg"
# Neutrales Thumbnail (ohne Text) für die Profil-Karte — der Titel steht dort im HTML
magick "$PHOTO" -auto-orient -crop 2648x2648+551+0 +repage -resize 600x600 -quality 85 "$IMG/album-thumb.jpg"

# --- 2)+3) pro Sprache: taggen + zippen ---
# Zeilenformat: "quelldatei(ohne .mp3)|Titel|Untertitel"
DE_TRACKS=(
  "ban-yaro-blues|Ban Yaro Blues|Die Hymne"
  "ban-yaro-mobil|Ban Yaro Mobil|Erste Fahrt im Anhänger"
  "amy|Amy|Eine Liebesromanze"
  "beim-friseur|Beim Friseur|Halbes Fell, Energie pur"
  "leckerli-paradies|Leckerli-Paradies|Voller Napf, volles Glück"
  "platsch|Platsch!|Ab ins kühle Nass"
  "bester-freund|Bester Freund|Du und ich"
)
EN_TRACKS=(
  "ban-yaro-blues-en|Ban Yaro Blues|The anthem"
  "ban-yaro-mobil-en|Ban Yaro Mobile|First ride in the trailer"
  "amy-en|Amy|A love duet"
  "at-the-groomers-en|At the Groomer's|Half the fur, all the energy"
  "treat-paradise-en|Treat Paradise|Full bowl, full heart"
  "splash-en|Splash!|Into the cool water"
  "best-friend-en|Best Friend|You and me"
)

zip_album() {  # $1=lang  $2=AlbumName(ID3, Em-Dash ok)  $3=Ordner(ASCII)  $4=art  $5=liner  shift 5; rest=tracks
  local lang="$1" album="$2" fname="$3" art="$4" liner="$5"; shift 5
  local folder="$DIST/$fname"; rm -rf "$folder"; mkdir -p "$folder"
  if [ "$lang" = "de" ]; then cp "$liner" "$folder/LIESMICH.txt"; else cp "$liner" "$folder/README.txt"; fi
  cp "$art" "$folder/cover.jpg"
  local n=0 line src title sub nn
  for line in "$@"; do
    n=$((n+1)); nn=$(printf "%02d" "$n")
    IFS='|' read -r src title sub <<<"$line"
    ffmpeg -y -loglevel error -i "$SND/$src.mp3" -i "$art" \
      -map 0:a -map 1:v -c copy -id3v2_version 3 \
      -metadata title="$title" -metadata artist="Ban Yaro" \
      -metadata album="$album" -metadata album_artist="Ban Yaro" \
      -metadata track="$n/7" -metadata date="2026" -metadata genre="Blues" \
      -metadata comment="$sub" -disposition:v:0 attached_pic \
      "$folder/$nn $title.mp3"
  done
  ( cd "$DIST" && rm -f "$DL/ban-yaro-album-$lang.zip" && zip -r -X -q "$DL/ban-yaro-album-$lang.zip" "$fname" )
  echo "  ✓ $fname → ban-yaro-album-$lang.zip ($(du -h "$DL/ban-yaro-album-$lang.zip" | cut -f1))"
}

# LIESMICH.txt für DE, README.txt für EN
cp "$BUILD/liner-de.txt" "$DIST/_liner-de.txt"
cp "$BUILD/liner-en.txt" "$DIST/_liner-en.txt"
zip_album "de" "Ban Yaro — Das Album" "Ban Yaro - Das Album" "$DIST/art-de.jpg" "$DIST/_liner-de.txt" "${DE_TRACKS[@]}"
zip_album "en" "Ban Yaro — The Album" "Ban Yaro - The Album" "$DIST/art-en.jpg" "$DIST/_liner-en.txt" "${EN_TRACKS[@]}"

echo "Fertig. Downloads in backend/static/downloads/, Thumbnail in img/banyaro/album-thumb.jpg"