#!/usr/bin/env bash
# Generiert Tower-Funkansagen pro Hubschrauber via ElevenLabs.
# Liest tower-lines.json, speichert MP3s in App/sims/heli/sounds/radio/
#
# Voraussetzung: ELEVENLABS_API_KEY + curl + python
#
# Aufruf:
#   set -a; source App/.env.local; set +a
#   App/sims/heli/scripts/generate-tower-lines.sh
#   FORCE=1 …   überschreibt bestehende
set -e
: "${ELEVENLABS_API_KEY:?Env-Variable ELEVENLABS_API_KEY muss gesetzt sein}"

# Default-Voice: 'Sarah' — klar, weiblich, multilingual-fähig.
# Eigene Stimme: ELEVENLABS_VOICE_ID=xxx vor dem Aufruf.
VOICE_ID="${ELEVENLABS_VOICE_ID:-EXAVITQu4vr4xnSDxMaL}"
MODEL_ID="${ELEVENLABS_MODEL_ID:-eleven_multilingual_v2}"

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
OUT_DIR="$SCRIPT_DIR/../sounds/radio"
JSON_FILE="$SCRIPT_DIR/tower-lines.json"
mkdir -p "$OUT_DIR"

generate() {
  local id="$1"
  local text="$2"
  local out="$OUT_DIR/${id}.mp3"
  if [ -f "$out" ] && [ -z "$FORCE" ]; then
    echo "✓ ${id}.mp3 schon da"; return
  fi
  echo "→ ${id}: generiere …"
  local payload
  payload=$(TEXT="$text" MODEL="$MODEL_ID" python -c '
import json, os
print(json.dumps({
    "text": os.environ["TEXT"],
    "model_id": os.environ["MODEL"],
    "voice_settings": {"stability": 0.55, "similarity_boost": 0.78, "style": 0.25, "use_speaker_boost": True}
}))')
  curl -sS -X POST "https://api.elevenlabs.io/v1/text-to-speech/$VOICE_ID" \
    -H "xi-api-key: $ELEVENLABS_API_KEY" \
    -H "accept: audio/mpeg" \
    -H "content-type: application/json" \
    -d "$payload" \
    --output "$out"
  local size; size=$(wc -c <"$out")
  if [ "$size" -lt 1500 ]; then
    echo "✗ ${id}: Fehler — Datei zu klein ($size B), Inhalt:"
    cat "$out"; rm -f "$out"; return 1
  fi
  echo "✓ ${id}.mp3 ($size B)"
  sleep 0.4
}

# Liste laden und pro Zeile generieren (via stdin — umgeht Windows-Pfad-Probleme)
python -c "
import json, sys
d = json.load(sys.stdin)
for line in d['lines']: print(line['id'] + '\t' + line['text'])
" < "$JSON_FILE" | while IFS=$'\t' read -r id text; do
  [ -z "$id" ] && continue
  generate "$id" "$text"
done

echo
echo "Fertig. Ablage: $OUT_DIR"
ls -1 "$OUT_DIR"/r_tower_*.mp3 2>/dev/null | wc -l | xargs printf "Tower-Dateien vorhanden: %s\n"