import store from '@/store'
import config from '@/common/config.js'

// 获取跳转page的带参完成路径
function getPageUrl(url, params) {
	if (!url) {
		return null
	}
	if (params) {
		let paramsUrl = ''
		for (let item in params) {
			paramsUrl += item + '=' + params[item] + '&'
		}
		url += '?' + paramsUrl.substr(0, paramsUrl.length - 1)
	}
	return url
}

// 跳转到对应的page页面
function navigateToPage(url, params, requiredLogin = false, events = {}) {
	_goToPage(1, url, params, requiredLogin, events)
}

// 关闭当前页面，跳转到应用内的page页面
function redirectToPage(url, params, requiredLogin = false) {
	_goToPage(2, url, params, requiredLogin)
}

// 跳转到switchTab的page页面
function switchTabPage(url, params, requiredLogin = false) {
	_goToPage(3, url, params, requiredLogin)
}

function _goToPage(type, url, params, requiredLogin = false, events = {}) {
	
	if (requiredLogin && !store.getters.isLogin) {
	// if (requiredLogin && !uni.getStorageSync(config.const.access_token)) {
		showNeedLoginDialog()
		return
	}
	const wholeUrl = getPageUrl(url, params)
	if (!wholeUrl) {
		return
	}
	
	if (type === 1) {
		uni.navigateTo({
			url: wholeUrl,
			events
		})
	} else if (type === 2) {
		uni.redirectTo({
			url: wholeUrl
		})
	} else if (type === 3) {
		// switchTab不能传参
		uni.switchTab({
			url: wholeUrl
		})
	} else {
		uni.showToast({
			icon: 'none',
			title: '跳转类型错误!'
		})
	}
}

// 返回
function navigateBack(backCallback) {
	if (!backCallback) {
		if (getCurrentPages().length > 1) {
			uni.navigateBack()
		} else {
			// uni.switchTab({
			// 	url: config.route.index
			// })
			uni.navigateTo({
				url: config.route.index
			})
		}
		return
	}
	backCallback()
}

function showNeedLoginDialog() {
	uni.showModal({
		title: '提示',
		content: '您还未登录,确定跳转到登录页吗?',
		success: function (res) {
			if (res.confirm) {
				uni.navigateTo({
					url: config.route.login
				})
			}
		}
	})
}

module.exports = {
	getPageUrl,
	navigateToPage,
	redirectToPage,
	switchTabPage,
	navigateBack,
	showNeedLoginDialog
}