"""Coqui XTTS wrapper: POST /synthesize -> WAV audio bytes."""
import os
import uuid
from pathlib import Path
from flask import Flask, request, send_file, jsonify

app = Flask(__name__)
VOICE_NAME = os.getenv("VOICE_NAME", "wizard")
REFERENCE_DIR = Path("/app/reference")
OUT_DIR = Path("/tmp/tts-out")
OUT_DIR.mkdir(parents=True, exist_ok=True)

_ref = REFERENCE_DIR / "voice-sample.wav"

from TTS.api import TTS
tts = TTS(model_name="tts_models/en/vctk/vits", progress_bar=False, gpu=False)

@app.get("/health")
def health():
    return {"status": "ok", "voice": VOICE_NAME}

@app.post("/synthesize")
def synthesize():
    data = request.get_json(force=True)
    text = data.get("text", "")
    if not text:
        return jsonify({"error": "text required"}), 400
    out = OUT_DIR / f"{uuid.uuid4().hex}.wav"
    tts.tts_to_file(text=text, file_path=str(out))
    return send_file(str(out), mimetype="audio/wav")

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=5002)