<template>
	<div v-drag class="mobile-nav-button" draggable="false" @click="showMobileNav($event)">
		<appstore-outlined style="font-size: 20px; color: white" />
	</div>
	<a-drawer v-model:visible="visible" :width="210" :closable="false" placement="left">
		<header class="snowy-header-logo mobile-nav">
			<div class="snowy-header-left">
				<div class="logo-bar">
					<img class="logo" :src="sysBaseConfig.SNOWY_SYS_LOGO" />
					<span>{{ sysBaseConfig.SNOWY_SYS_NAME }}</span>
				</div>
			</div>
		</header>
		<a-menu style="width: 208px; margin-left: -24px" mode="inline" @select="onSelect">
			<NavMenu :nav-menus="menu"></NavMenu>
		</a-menu>
	</a-drawer>
</template>
<script setup>
	import NavMenu from './NavMenu.vue'
	import { globalStore } from '@/store'
	import { useRouter } from 'vue-router'

	const router = useRouter()
	const store = globalStore()

	const vDrag = (el) => {
		const oDiv = el // 当前元素
		let firstTime = ''
		let lastTime = ''
		// 禁止选择网页上的文字
		// document.onselectstart = function() {
		// 	return false;
		// };
		oDiv.onmousedown = function (e) {
			// 鼠标按下，计算当前元素距离可视区的距离
			const disX = e.clientX - oDiv.offsetLeft
			const disY = e.clientY - oDiv.offsetTop
			document.onmousemove = function (e) {
				oDiv.setAttribute('drag-flag', true)
				firstTime = new Date().getTime()
				// 通过事件委托，计算移动的距离
				const l = e.clientX - disX
				const t = e.clientY - disY
				// 移动当前元素
				if (t > 0 && t < document.body.clientHeight - 50) {
					oDiv.style.top = `${t}px`
				}
				if (l > 0 && l < document.body.clientWidth - 50) {
					oDiv.style.left = `${l}px`
				}
			}
			document.onmouseup = function () {
				lastTime = new Date().getTime()
				if (lastTime - firstTime > 200) {
					oDiv.setAttribute('drag-flag', false)
				}
				document.onmousemove = null
				document.onmouseup = null
			}
			// return false不加的话可能导致黏连，就是拖到一个地方时div粘在鼠标上不下来，相当于onmouseup失效
			return false
		}
	}

	const visible = ref(false)
	const menu = ref([])

	const sysBaseConfig = computed(() => {
		return store.sysBaseConfig
	})

	onBeforeMount(() => {
		const menus = router.getMenu()
		menu.value = filterUrl(menus)
	})

	const showMobileNav = (e) => {
		const isdrag = e.currentTarget.getAttribute('drag-flag')
		visible.value = true
		if (isdrag === 'true') {
			return false
		} else {
			visible.value = true
		}
	}
	// 当菜单被选中时
	const onSelect = (obj) => {
		const pathLength = obj.keyPath.length
		const path = obj.keyPath[pathLength - 1]
		router.push({ path })
		visible.value = false
	}
	// 转换外部链接的路由
	const filterUrl = (map) => {
		map.forEach((item, index) => {
			item.meta = item.meta ? item.meta : {}
			// 处理隐藏
			if (item.meta.hidden) {
				map.splice(index, 1)
			}
			// 处理http
			if (item.meta.type === 'iframe') {
				item.path = `/i/${item.name}`
			}
			// 递归循环
			if (item.children && item.children.length > 0) {
				item.children = filterUrl(item.children)
			}
		})
		return map
	}
</script>

<style lang="less" scoped>
	.mobile-nav {
		margin-top: -24px;
		margin-left: -24px;
		margin-right: -24px;
	}
	.mobile-nav-button {
		position: fixed;
		bottom: 10px;
		left: 10px;
		z-index: 10;
		width: 50px;
		height: 50px;
		background: var(--primary-color);
		box-shadow: 0 2px 12px 0 var(--primary-color);
		border-radius: 50%;
		display: flex;
		align-items: center;
		justify-content: center;
	}
</style>
