// +----------------------------------------------------------------------
// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
// +----------------------------------------------------------------------
// | Copyright (c) 2016~2021 https://www.crmeb.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
// +----------------------------------------------------------------------
// | Author: CRMEB Team <admin@crmeb.com>
// +----------------------------------------------------------------------

import store from "../store";
import Cache from '../utils/cache';
import {
	Debounce
} from '@/utils/validate.js'
// #ifdef H5 || APP-PLUS
import {
	isWeixin
} from "../utils";
import auth from './wechat';
// #endif

import {
	LOGIN_STATUS,
	USER_INFO,
	EXPIRES_TIME,
	STATE_R_KEY
} from './../config/cache';
import Routine from '@/libs/routine';

/**
 * 不依赖 atob 的 base64 解码（小程序环境不提供 atob）
 */
function base64Decode(str) {
	var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
	var output = '';
	var i = 0;
	str = String(str).replace(/[^A-Za-z0-9+/=]/g, '');
	while (i < str.length) {
		var b1 = chars.indexOf(str.charAt(i++));
		var b2 = chars.indexOf(str.charAt(i++));
		var b3 = chars.indexOf(str.charAt(i++));
		var b4 = chars.indexOf(str.charAt(i++));
		output += String.fromCharCode((b1 << 2) | (b2 >> 4));
		if (b3 !== 64) output += String.fromCharCode(((b2 & 15) << 4) | (b3 >> 2));
		if (b4 !== 64) output += String.fromCharCode(((b3 & 3) << 6) | b4);
	}
	return output;
}

function prePage() {
	let pages = getCurrentPages();
	let prePage = pages[pages.length - 1];
	// #ifndef APP-PLUS
	return prePage.route;
	// #endif
	// #ifdef APP-PLUS
	return prePage.$page.fullPath;
	// #endif

}



export const toLogin = Debounce(_toLogin, 800)

function _toLogin(push, pathLogin) {
	store.commit("LOGOUT");
	let path = prePage();

	// #ifdef H5
	path = location.pathname + location.search;
	// #endif

	if (!pathLogin)
		pathLogin = '/page/users/login/index'
	Cache.set('login_back_url', path);
	const BASIC_CONFIG = uni.getStorageSync('BASIC_CONFIG');
	// #ifdef H5
	if (isWeixin() && BASIC_CONFIG.wechat_status) {
		uni.navigateTo({
			url: '/pages/users/wechat_login/index',
		});
	
	} else {
		uni.navigateTo({
			url: '/pages/users/login/index'
		})
	}
	// #endif

	// #ifdef MP
	let url
	if (!BASIC_CONFIG.wechat_auth_switch) {
		url = '/pages/users/binding_phone/index?pageType=0'
	} else {
		url = '/pages/users/wechat_login/index'
	}
	uni.navigateTo({
		url
	})
	// #endif

	// #ifdef APP-PLUS
	uni.navigateTo({
		url: '/pages/users/login/index'
	})
	// #endif

}


export function checkLogin() {
	let token = Cache.get(LOGIN_STATUS);
	let expiresTime = Cache.get(EXPIRES_TIME);
	let newTime = Math.round(new Date() / 1000);
	if (expiresTime < newTime || !token) {
		uni.setStorageSync('authIng', false)
		Cache.clear(LOGIN_STATUS);
		Cache.clear(EXPIRES_TIME);
		Cache.clear(USER_INFO);
		Cache.clear(STATE_R_KEY);
		return false;
	} else {
		store.commit('UPDATE_LOGIN', token);
		// 从 JWT payload 中恢复 uid / unionid
		try {
			let parts = token.split('.');
			if (parts.length === 3) {
				let payload = parts[1]
					.replace(/-/g, '+')
					.replace(/_/g, '/');
				while (payload.length % 4 !== 0) payload += '=';
				let data = JSON.parse(base64Decode(payload));
				if (data.uid) store.commit('SETUID', data.uid);
				if (data.unionid) {
					store.commit('SET_UNIONID', data.unionid);
					Cache.set('UNIONID', data.unionid);
					console.log('[checkLogin] unionid 已从 JWT 恢复:', data.unionid);
				}
			}
		} catch (e) {}
		// 恢复缓存的 openid
		const cachedOpenid = Cache.get('OPENID');
		if (cachedOpenid) {
			store.commit('SET_OPENID', cachedOpenid);
			console.log('[checkLogin] openid 已从缓存恢复:', cachedOpenid);
		}
		// 恢复缓存的 unionid
		const cachedUnionid = Cache.get('UNIONID');
		if (cachedUnionid) {
			store.commit('SET_UNIONID', cachedUnionid);
			console.log('[checkLogin] unionid 已从缓存恢复:', cachedUnionid);
		} else {
			console.log('[checkLogin] unionid 缓存为空');
		}
		// 从 userInfo 缓存恢复
		let userInfo = Cache.get(USER_INFO, true);
		if (userInfo) {
			store.commit('UPDATE_USERINFO', userInfo);
			if (!cachedUnionid && userInfo.unionid) {
				console.log('[checkLogin] unionid 已从 userInfo 恢复:', userInfo.unionid);
			}
		}
		return true;
	}

}