from .synth import TinyTTSSynthesizer


class LocalTTSService:
    def __init__(self):
        self.engine = TinyTTSSynthesizer()

    def describe(self) -> str:
        return "Local TTS engine ready. No API key and no external model."

    def synthesize(
        self,
        text: str,
        voice: str,
        speed: float,
        pitch_shift: float,
    ):
        sample_rate, audio, normalized = self.engine.synthesize(
            text=text,
            voice=voice,
            speed=float(speed),
            pitch_shift=float(pitch_shift),
        )
        status = f"Generated local speech with voice={voice}, speed={speed:.2f}, pitch_shift={pitch_shift:.2f}"
        return (sample_rate, audio), status, normalized