"""
TTS 双向流测试 - 边发送文本边接收音频
"""

import time
from pathlib import Path
from src.Module.tts.tts import StreamingTTS


def simulate_llm_output():
    """
    模拟 LLM 流式输出
    一句话分成多个部分逐步发送
    """
    text_chunks = [
        "你好，",
        "我是通义千问",
        "语音合成系统。",
        "现在正在进行",
        "双向流测试！"
    ]

    for chunk in text_chunks:
        print(f"  [发送文本] -> {chunk}")
        yield chunk
        time.sleep(0.1)  # 模拟 LLM 生成延迟


def test_bidirectional_stream():
    """测试双向流式合成"""
    print("=" * 60)
    print("     TTS 双向流测试")
    print("=" * 60)
    print("\n一句话分为多个部分发送，同时接收音频\n")

    tts = StreamingTTS(voice='Cherry')

    total_bytes = 0
    chunk_count = 0
    audio_data = bytearray()

    print("开始双向流传输...\n")

    # 使用 stream_from_generator 实现双向流
    for audio_chunk in tts.stream_from_generator(simulate_llm_output()):
        if audio_chunk.error:
            print(f"  [错误] {audio_chunk.error}")
            break

        if audio_chunk.data:
            chunk_count += 1
            total_bytes += len(audio_chunk.data)
            audio_data.extend(audio_chunk.data)
            print(
                f"  [收到音频] Chunk {
                    chunk_count:02d}: {
                    len(
                        audio_chunk.data):5d} 字节 | 累计: {
                    total_bytes:6d} 字节")

        if audio_chunk.is_final:
            print("\n传输完成!")
            break

    # 保存音频
    output_dir = Path(__file__).parent / 'output'
    output_dir.mkdir(exist_ok=True)
    wav_file = output_dir / 'bidirectional_test.wav'

    import wave
    with wave.open(str(wav_file), 'wb') as wav:
        wav.setnchannels(1)
        wav.setsampwidth(2)
        wav.setframerate(24000)
        wav.writeframes(audio_data)

    print(f"\n结果统计:")
    print(f"  音频块: {chunk_count} 个")
    print(f"  总字节: {total_bytes} 字节")
    print(f"  音频时长: {total_bytes / (24000 * 2):.2f} 秒")
    print(f"  已保存: {wav_file}")

    return chunk_count > 0


if __name__ == '__main__':
    success = test_bidirectional_stream()
    print(f"\n测试结果: {'✓ 通过' if success else '✗ 失败'}")