import { wechatApi } from '@/api/index.js';

// 动态加载微信 JSSDK
const loadWxJSSDK = () => {
	return new Promise((resolve, reject) => {
		console.log('[JSSDK] 开始检查加载状态...');
		console.log('[JSSDK] window.wx =', window.wx);
		console.log('[JSSDK] typeof window.wx =', typeof window.wx);

		// 如果已经加载,直接返回
		if (window.wx && typeof window.wx.config === 'function') {
			console.log('[JSSDK] 已存在,直接使用');
			resolve();
			return;
		}

		console.log('[JSSDK] 未加载,开始动态加载...');
		// 动态创建 script 标签
		const script = document.createElement('script');
		script.type = 'text/javascript';
		script.src = 'https://res.wx.qq.com/open/js/jweixin-1.6.0.js';

		script.onload = () => {
			console.log('[JSSDK] 脚本加载完成,等待wx对象初始化...');

			// 脚本加载完成后,需要等待一小段时间让wx对象被赋值
			// 使用轮询检查wx对象是否可用
			let checkCount = 0;
			const maxCheckCount = 20; // 最多检查2秒 (20 * 100ms)

			const checkWx = setInterval(() => {
				checkCount++;
				console.log(`[JSSDK] 检查wx对象 (${checkCount}/${maxCheckCount})`, window.wx);

				if (window.wx && typeof window.wx.config === 'function') {
					clearInterval(checkWx);
					console.log('[JSSDK] wx对象已就绪');
					resolve();
				} else if (checkCount >= maxCheckCount) {
					clearInterval(checkWx);
					console.error('[JSSDK] wx对象初始化超时');
					console.error('[JSSDK] window.wx =', window.wx);
					reject(new Error('微信JSSDK初始化超时,请在微信中打开'));
				}
			}, 100);
		};

		script.onerror = (err) => {
			console.error('[JSSDK] 脚本加载失败', err);
			reject(new Error('微信JSSDK脚本加载失败,请检查网络'));
		};

		console.log('[JSSDK] 插入 script 标签到 head');
		document.head.appendChild(script);
	});
};

export const initWxSdk = async () => {
	// #ifdef H5
	try {
		console.log('[initWxSdk] 开始初始化...');

		// 动态加载微信 JSSDK
		await loadWxJSSDK();

		const currentUrl = window.location.href.split('#')[0];
		console.log('[initWxSdk] 当前URL:', currentUrl);

		const data = await wechatApi.getJssdkConfig(currentUrl);
		console.log('[initWxSdk] 获取到配置:', data);

		window.wx.config({
			debug: true,
			appId: data.app_id,
			timestamp: data.timestamp,
			nonceStr: data.nonce_str,
			signature: data.signature,
			jsApiList: ['scanQRCode']
		});

		return new Promise((resolve) => {
			window.wx.ready(() => {
				console.log('[initWxSdk] SDK配置成功');
				resolve({ success: true });
			});
			window.wx.error((err) => {
				console.error('[initWxSdk] SDK配置失败:', err);
				resolve({ success: false, error: err.errMsg || '微信配置失败' });
			});
		});
	} catch (e) {
		console.error('[initWxSdk] 初始化失败:', e);
		return { success: false, error: e.message || '初始化失败' };
	}
	// #endif
	// #ifndef H5
	return { success: false, error: '请在H5环境中使用' };
	// #endif
};