"""
Multi-Speaker Orchestrator

Assigns speaker voices, dispatches TTS requests, and mixes audio.
"""

from typing import List, Dict


class MultiSpeakerOrchestrator:
    def __init__(self, voices: Dict[str, str]) -> None:
        self.voices = voices

    def dispatch_tts_segment(self, speaker: str, text: str) -> Dict[str, str]:
        voice = self.voices.get(speaker, "default")
        # Placeholder: return a fake audio ref
        return {"speaker": speaker, "voice": voice, "audio_ref": f"audio/{speaker}.wav", "text": text}

    def sync_audio_timing(self, segments: List[Dict[str, str]]) -> List[Dict[str, str]]:
        # Placeholder: no-op sync
        return segments

    def mix_audio_track(self, segments: List[Dict[str, str]]) -> Dict[str, str]:
        return {"mixed_audio": "audio/final_mix.wav", "segments": segments}

    def orchestrate(self, turns: List[Dict[str, str]]) -> Dict[str, str]:
        segments = [self.dispatch_tts_segment(t["speaker"], t["text"]) for t in turns]
        synced = self.sync_audio_timing(segments)
        return self.mix_audio_track(synced)
