/*
 * 微信JS-SDK工具
 * 用于H5端的微信分享功能
 */
import { ROOTPATH, WECHAT_APPID } from '@/common/config.js'

let wx = null

// 动态加载微信JS-SDK
const loadWxSDK = () => {
	return new Promise((resolve, reject) => {
		// #ifdef H5
		if (typeof window !== 'undefined' && !window.wx) {
			const script = document.createElement('script')
			script.src = 'https://res.wx.qq.com/open/js/jweixin-1.6.0.js'
			script.onload = () => {
				wx = window.wx
				resolve(wx)
			}
			script.onerror = () => {
				reject(new Error('加载微信JS-SDK失败'))
			}
			document.head.appendChild(script)
		} else if (window.wx) {
			wx = window.wx
			resolve(wx)
		} else {
			reject(new Error('不支持的环境'))
		}
		// #endif
		// #ifndef H5
		resolve(null)
		// #endif
	})
}

// 获取微信JS-SDK签名
const getWxSignature = () => {
	return new Promise((resolve, reject) => {
		// #ifdef H5
		const url = window.location.href.split('#')[0]
		uni.request({
			url: `${ROOTPATH}/api/mobile/user/wechat-share`,
			method: 'GET',
			data: {
				url: url,
				activity_tag: 'walksz',
				activity_list_id: 13
			},
			success: (res) => {
				if (res.data && res.data.signature) {
					resolve(res.data)
				} else {
					reject(new Error('获取签名失败'))
				}
			},
			fail: (err) => {
				reject(err)
			}
		})
		// #endif
		// #ifndef H5
		resolve(null)
		// #endif
	})
}

// 初始化微信JS-SDK
const initWxSDK = (shareConfig = {}) => {
	return new Promise((resolve, reject) => {
		// #ifdef H5
		loadWxSDK().then(() => {
			getWxSignature().then((signatureData) => {
				const { signature, timestamp, nonceStr } = signatureData
				
				wx.config({
					debug: false,
					appId: WECHAT_APPID,
					timestamp: timestamp,
					nonceStr: nonceStr,
					signature: signature,
					jsApiList: ['updateAppMessageShareData', 'updateTimelineShareData']
				})
				
				wx.ready(() => {
					// 分享到朋友
					wx.updateAppMessageShareData({
						title: shareConfig.title || '打卡苏州市党史教育基地',
						desc: shareConfig.desc || '打卡苏州市党史教育基地',
						link: shareConfig.link || window.location.href,
						imgUrl: shareConfig.imgUrl || `${window.location.origin}/h5walksz/static/share.jpg`,
						success: () => {
							console.log('分享到朋友成功')
						}
					})
					
					// 分享到朋友圈
					wx.updateTimelineShareData({
						title: shareConfig.title || '打卡苏州市党史教育基地',
						link: shareConfig.link || window.location.href,
						imgUrl: shareConfig.imgUrl || `${window.location.origin}/h5walksz/static/share.jpg`,
						success: () => {
							console.log('分享到朋友圈成功')
						}
					})
					
					resolve(wx)
				})
				
				wx.error((res) => {
					console.error('微信JS-SDK配置失败', res)
					reject(res)
				})
			}).catch((err) => {
				console.error('获取签名失败', err)
				reject(err)
			})
		}).catch((err) => {
			console.error('加载微信JS-SDK失败', err)
			reject(err)
		})
		// #endif
		// #ifndef H5
		resolve(null)
		// #endif
	})
}

export {
	loadWxSDK,
	getWxSignature,
	initWxSDK
}