// ttsManager.js
import {
	getBaiduTTSUrl,
	getBaiduTTSAccessToken
} from '@/common/js/tts.js'
class TTSManager {
	constructor() {
		this.isSpeaking = false;
		this.messageQueue = [];
		this.audioContext = null;
		this.initAudio();
	}

	initAudio() {
		this.audioContext = uni.createInnerAudioContext();
		this.audioContext.onEnded(() => {
			this.isSpeaking = false;
			this.playNext(); // 播放下一句
		});
		this.audioContext.onError((error) => {
			console.error('音频播放错误:', error);
			this.isSpeaking = false;
			this.playNext();
		});
	}

	async speak(text) {
		// 如果正在播放，将新消息加入队列
		if (this.isSpeaking) {
			this.messageQueue.push(text);
			return;
		}

		this.isSpeaking = true;
		try {
			const token = await getBaiduTTSAccessToken();
			const audioUrl = getBaiduTTSUrl(text, token);
			this.audioContext.src = audioUrl;
			this.audioContext.play();
		} catch (error) {
			console.error('TTS合成失败:', error);
			this.isSpeaking = false;
		}
	}

	playNext() {
		if (this.messageQueue.length > 0) {
			const nextText = this.messageQueue.shift();
			this.speak(nextText);
		}
	}

	destroy() {
		if (this.audioContext) {
			this.audioContext.destroy();
		}
	}
}

export default new TTSManager();