<template>
	<a-drawer
		title="授权资源"
		:width="drawerWidth"
		:visible="visible"
		:destroy-on-close="true"
		:show-pagination="false"
		:body-style="{ paddingBottom: '80px' }"
		:footer-style="{ textAlign: 'right' }"
		@close="onClose"
	>
		<a-spin :spinning="spinningLoading">
			<a-radio-group v-model:value="moduleId" button-style="solid" style="padding-bottom: 10px">
				<a-radio-button
					:key="module.id"
					v-for="module in echoDatalist"
					:value="module.id"
					@click="moduleClock(module.id)"
				>
					<component :is="module.icon" />
					{{ module.title }}</a-radio-button
				>
			</a-radio-group>

			<a-table size="middle" :columns="columns" :data-source="loadDatas" :pagination="false" bordered>
				<template #bodyCell="{ column, record }">
					<template v-if="column.dataIndex === 'parentName'">
						<a-checkbox :checked="record.parentCheck" @update:checked="(val) => changeParent(record, val)">
							{{ record.parentName }}
						</a-checkbox>
					</template>

					<template v-if="column.dataIndex === 'title'">
						<a-checkbox :checked="record.nameCheck" @update:checked="(val) => changeSub(record, val)">{{
							record.title
						}}</a-checkbox>
					</template>

					<template v-if="column.dataIndex === 'button'">
						<template v-if="record.button.length > 0">
							<template v-for="(item, index) in record.button" :key="item.id">
								<a-checkbox v-model:checked="item.check" @change="(evt) => changeChildCheckBox(record, evt)">{{
									item.title
								}}</a-checkbox>
								<br v-if="(index + 1) % 5 === 0" />
							</template>
						</template>
					</template>
				</template>
			</a-table>
		</a-spin>
		<template #footer>
			<a-button style="margin-right: 8px" @click="onClose">关闭</a-button>
			<a-button type="primary" :loading="submitLoading" @click="onSubmit">保存</a-button>
		</template>
	</a-drawer>
</template>

<script setup name="grantResourceForm">
	import { nextTick } from 'vue'
	import tool from '@/utils/tool'
	import userApi from '@/api/sys/userApi'
	import roleApi from '@/api/sys/roleApi'
	import userCenterApi from '@/api/sys/userCenterApi'
	const spinningLoading = ref(false)
	let firstShowMap = $ref({})
	const emit = defineEmits({ successful: null })
	const submitLoading = ref(false)
	// 抽屉的宽度
	const drawerWidth = 1000
	// 自动获取宽度，默认获取浏览器的宽度的90%
	//(window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth) * 0.9

	const columns = [
		{
			key: 'parentName',
			title: '一级目录',
			dataIndex: 'parentName',
			customCell: (row, index) => {
				const parentName = row.parentName
				const indexArr = firstShowMap[parentName]
				if (index === indexArr[0]) {
					return { rowSpan: indexArr.length }
				}
				return { rowSpan: 0 }
			},
			width: 150
		},
		{
			key: 'title',
			title: '菜单',
			dataIndex: 'title',
			width: 200
		},
		{
			key: 'button',
			title: '按钮授权',
			dataIndex: 'button'
		}
	]
	const echoDatalist = ref([])
	const moduleId = ref('')
	const loadDatas = ref([])

	// 获取数据
	const loadData = async () => {
		// firstShowMap = {} // 重置单元格合并映射
		// 如果有数据，我们再不去反复的查询
		if (echoDatalist.value.length > 0) {
			let data = echoDatalist.value.find((f) => f.id === moduleId.value).menu
			loadDatas.value = data
		} else {
			// 获取表格数据
			spinningLoading.value = true
			const res = await roleApi.roleResourceTreeSelector()
			const param = {
				id: resultDataModel.id
			}
			// 获取回显数据
			const resEcho = await userApi.userOwnResource(param)
			spinningLoading.value = false
			echoDatalist.value = echoModuleData(res, resEcho)
			moduleId.value = res[0].id
			loadDatas.value = echoDatalist.value[0].menu
		}
	}
	const checkFieldKeys = ['button']
	let visible = $ref(false)
	// 返回的数据模型，最终需要转换成这样
	let resultDataModel = {
		id: '',
		grantInfoList: []
	}
	// 打开抽屉
	const onOpen = (record) => {
		resultDataModel.id = record.id
		visible = true
		firstShowMap = {}
		loadData()
	}
	// 数据转换
	const echoModuleData = (data, resEcho) => {
		// 通过应用循环
		data.forEach((module) => {
			if (module.menu) {
				// 加入回显内容
				module.menu.forEach((item) => {
					const menueCheck = ref(0)
					if (resEcho.grantInfoList.length > 0) {
						resEcho.grantInfoList.forEach((grant) => {
							if (item.id === grant.menuId) {
								menueCheck.value++
								// 处理按钮
								if (grant.buttonInfo.length > 0) {
									grant.buttonInfo.forEach((button) => {
										item.button.forEach((itemButton) => {
											if (button === itemButton.id) {
												itemButton.check = true
											}
										})
									})
								}
							}
						})
					}
					// 回显前面的2个
					if (menueCheck.value > 0) {
						item.parentCheck = true
						item.nameCheck = true
					}
				})

				// 排序
				module.menu = module.menu.sort((a, b) => {
					return a.parentId - b.parentId
				})
				// 缓存加入索引
				module.menu.forEach((item, index) => {
					// 下面就是用来知道不同的一级菜单里面有几个二级菜单，以及他们所在的索引
					if (firstShowMap[item.parentName]) {
						firstShowMap[item.parentName].push(index)
					} else {
						firstShowMap[item.parentName] = [index]
					}
				})
			}
		})
		return data
	}

	// 通过应用分菜单
	const moduleClock = (value) => {
		moduleId.value = value
		loadData()
	}
	// 遍历字段
	const handleOnlySelf = (record, key, val) => {
		record[key].forEach((item) => {
			// 处理'button'选中状态
			item.check = val
		})
	}
	const checkAllChildNotChecked = (record) => {
		const allChecked = checkFieldKeys.every((key) => {
			// 遍历所有的字段
			const child = record[key]
			return child.every((field) => !field.check)
		})
		return allChecked
	}
	const changeChildCheckBox = (record, evt) => {
		let checked = evt.target.checked
		if (!checked && checkAllChildNotChecked(record)) {
			// 这里注释掉勾选去掉所有按钮，联动去掉菜单
			/*record.nameCheck = false
			record.parentCheck = false*/
		} else if (checked) {
			record.nameCheck = checked
			record.parentCheck = checked
		}
	}
	// 二级菜单的勾选
	const changeSub = (record, val) => {
		// 选中二级菜单
		record.nameCheck = val
		checkFieldKeys.forEach((key) => {
			// 遍历所有的字段
			handleOnlySelf(record, key, val)
		})
	}
	// 当点击首列的勾选
	const changeParent = (record, val) => {
		record.parentCheck = val
		// 通过这个应用id，找到应用下的所有菜单
		const moduleMenu = echoDatalist.value.find((f) => record.module === f.id)
		const parentName = record.parentName
		// 获取同一级菜单的所有索引
		const indexArr = firstShowMap[parentName]
		indexArr.forEach((indexItem) => {
			// 获取同一级菜单的所有行
			const row = moduleMenu.menu[indexItem]
			// 给这些菜单的索引去勾选
			changeSub(row, val)
		})
	}
	// 关闭抽屉
	const onClose = () => {
		// 将这些缓存的给清空
		echoDatalist.value = []
		moduleId.value = ''
		loadDatas.value = []
		firstShowMap = {}
		visible = false
	}
	// 提交之前转换数据
	const convertData = () => {
		resultDataModel.grantInfoList = []
		echoDatalist.value.forEach((table) => {
			if (table.menu) {
				table.menu.forEach((item) => {
					const grantInfo = {
						menuId: '',
						buttonInfo: []
					}
					if (item.nameCheck) {
						grantInfo.menuId = item.id
						item.button.forEach((button) => {
							if (button.check) {
								grantInfo.buttonInfo.push(button.id)
							}
						})
						resultDataModel.grantInfoList.push(grantInfo)
					}
				})
			}
		})
		return resultDataModel
	}
	// 验证并提交数据
	const onSubmit = () => {
		const param = convertData()
		submitLoading.value = true
		userApi
			.userGrantResource(param)
			.then(() => {
				onClose()
				emit('successful')
				refreshCacheMenu()
			})
			.finally(() => {
				submitLoading.value = false
			})
	}
	// 刷新缓存的菜单
	const refreshCacheMenu = () => {
		nextTick(() => {
			userCenterApi.userLoginMenu().then((res) => {
				tool.data.set('MENU', res)
			})
		})
	}
	// 调用这个函数将子组件的一些数据和方法暴露出去
	defineExpose({
		onOpen
	})
</script>

<style scoped>
	/* 重写复选框的样式 */
	.ant-checkbox-wrapper {
		margin-left: 0px !important;
		padding-top: 2px !important;
		padding-bottom: 2px !important;
	}
</style>
