"""
TTS 模块使用示例

演示如何使用 TTS 引擎和服务。
"""

import asyncio
from io import BytesIO

# 示例 1: 直接使用 Edge-TTS 引擎
async def example_direct_engine():
    """直接使用 EdgeTTSEngine"""
    from tts.edge_tts_engine import EdgeTTSEngine

    engine = EdgeTTSEngine()
    print(f"Engine: {engine.get_engine_name()} v{engine.get_engine_version()}")

    # 合成语音
    text = "你好，我是语音合成助手。"
    audio = await engine.synthesize(text, language="zh-CN")
    print(f"Audio synthesized: {audio.getbuffer().nbytes} bytes")

    # 获取支持的声音
    voices = await engine.get_supported_voices("zh-CN")
    print(f"Supported voices: {len(voices)} found")
    for voice in voices[:3]:
        print(f"  - {voice['display_name']} ({voice['name']})")


# 示例 2: 使用工厂模式创建引擎
async def example_factory():
    """使用 TTSEngineFactory 创建引擎"""
    from tts.factory import TTSEngineFactory

    # 创建 Edge-TTS 引擎
    engine = TTSEngineFactory.create("edge-tts")
    print(f"\nUsing {engine.get_engine_name()} engine")

    # 合成多种语言
    texts = {
        "zh-CN": "你好，世界！",
        "en-US": "Hello, World!",
        "ja-JP": "こんにちは、世界！",
    }

    for language, text in texts.items():
        audio = await engine.synthesize(text, language=language)
        print(f"Synthesized {language}: {audio.getbuffer().nbytes} bytes")


# 示例 3: 使用高级服务
async def example_service():
    """使用 TTSService 高级接口"""
    from tts.service import TTSService

    # 获取引擎信息
    info = TTSService.get_engine_info()
    print(f"\nTTS Service Info: {info}")

    # 使用默认配置合成
    text = "使用服务默认配置合成语音。"
    audio = await TTSService.synthesize(text)
    print(f"Synthesized with defaults: {audio.getbuffer().nbytes} bytes")

    # 使用自定义参数合成
    text = "这是一个更快的语音示例。"
    audio = await TTSService.synthesize(text, rate=1.2)
    print(f"Synthesized with rate=1.2: {audio.getbuffer().nbytes} bytes")

    # 获取声音列表
    voices = await TTSService.get_supported_voices()
    print(f"Available voices: {len(voices)} found")


# 示例 4: 保存合成的音频到文件
async def example_save_audio():
    """合成语音并保存到文件"""
    from tts.service import TTSService

    text = "这是一个保存到文件的语音示例。"
    audio = await TTSService.synthesize(text)

    # 保存为 MP3 文件
    output_file = "output_audio.mp3"
    with open(output_file, "wb") as f:
        f.write(audio.getvalue())
    print(f"\nAudio saved to {output_file}")


async def main():
    """运行所有示例"""
    print("=" * 50)
    print("TTS Module Examples")
    print("=" * 50)

    try:
        # print("\n1. Direct Engine Usage")
        # print("-" * 50)
        # await example_direct_engine()

        # print("\n2. Factory Pattern")
        # print("-" * 50)
        # await example_factory()

        # print("\n3. Service Interface")
        # print("-" * 50)
        # await example_service()

        print("\n4. Save Audio to File")
        print("-" * 50)
        await example_save_audio()

    except Exception as e:
        print(f"Error: {e}")


if __name__ == "__main__":
    asyncio.run(main())