<template>
    <ElTree class="hc-tree-node tree-line" :class="ui" ref="ElTreeRef" :props="ElTreeProps" :load="ElTreeLoadNode" lazy highlight-current accordion node-key="primaryKeyId"
            :default-expanded-keys="defaultExpandedCids" @node-click="ElTreeClick" @node-contextmenu="ElTreeLabelContextMenu" :indent="0">
        <template #default="{ node, data }">
            <div class="data-custom-tree-node" :id="`${idPrefix}${data['primaryKeyId']}`">
                <!--树组件，节点名称-->
                <div class="label" :class="node.level === 1?'level-name':''">
                    <span :class="data?.colorStatus === 2?'text-blue':data?.colorStatus === 3?'text-orange':data?.colorStatus === 4?'text-green':''" v-if="isColor">{{ node.label }}</span>
                    <span v-else>{{ node.label }}</span>
                </div>
                <div class="text-blue submit-counts" v-if="isSubmitCounts">【{{ data.submitCounts ?? 0 }}】</div>
                <!--树组件，操作菜单-->
                <div class="menu-icon" :class="node.showTreeMenu?'show':''" v-if="node.level !== 1 && menusData.length > 0">
                    <div class="cu-tree-node-popover-menu-icon" @click.prevent.stop="ElTreeLabelContextMenu($event,data,node)">
                        <HcIcon name="apps" ui="text-2xl"/>
                    </div>
                </div>
                <!--树组件，操作菜单 END-->
            </div>
        </template>
    </ElTree>
    <!--右键菜单-->
    <HcContextMenu ref="contextMenuRef" :datas="menusData" @item-click="handleMenuSelect" v-if="menusData.length > 0" @closed="handleMenuClosed">
        <template #mark="{item}">
            <HcIcon :name="item.icon" :fill="treeRefData?.isFirst" class="menu-item-icon"/>
            <span class="menu-item-name">{{treeRefData?.isFirst ? '取消标记为首件' : '标记为首件'}}</span>
        </template>
        <template #sort="{item}">
            <HcIcon :name="item.icon" :line="false" class="menu-item-icon"/>
            <span class="menu-item-name">{{item.label}}</span>
        </template>
    </HcContextMenu>
</template>

<script setup>
import {ref,nextTick,watch} from "vue";
import dataFillQuery from '~api/data-fill/query';
import {isItem,getArrValue,getObjValue,isValueNull} from "vue-utils-plus"

//参数
const props = defineProps({
    menus: {
        type: Array,
        default: () => ([])
    },
    projectId: {
        type: [String,Number],
        default: ''
    },
    contractId: {
        type: [String,Number],
        default: ''
    },
    autoExpandKeys: {
        type: Array,
        default: () => ([])
    },
    isMark: {
        type: Boolean,
        default: false
    },
    idPrefix: {
        type: String,
        default: 'wbs-tree-'
    },
    isAutoKeys: {
        type: Boolean,
        default: true
    },
    isAutoClick: {
        type: Boolean,
        default: true
    },
    isColor: {
        type: Boolean,
        default: false
    },
    ui: {
        type: String,
        default: ''
    },
    submitCounts: {
        type: Boolean,
        default: false
    },
})

//变量
const ElTreeRef = ref(null)
const treeRefNode = ref(null)
const treeRefData = ref(null)
const ElTreeProps = ref({
    label: 'title',
    children: 'children',
    isLeaf: 'notExsitChild'
})
const menusData = ref(props.menus)
const menuMark = ref(props.isMark)
const isAutoKeys = ref(props.isAutoKeys)
const TreeExpandKey = ref(props.autoExpandKeys)
const projectId = ref(props.projectId);
const contractId = ref(props.contractId);
const idPrefix = ref(props.idPrefix);
const isSubmitCounts = ref(props.submitCounts);

//监听
watch(() => [
    props.menus,
    props.isMark,
    props.isAutoKeys,
    props.autoExpandKeys,
    props.projectId,
    props.contractId,
    props.idPrefix,
    props.submitCounts,
], ([menus, isMark, AutoKeys, expandKeys, UserProjectId, UserContractId, UserIdPrefix, submitCounts]) => {
    menusData.value = menus
    menuMark.value = isMark
    isAutoKeys.value = AutoKeys
    TreeExpandKey.value = expandKeys
    projectId.value = UserProjectId
    contractId.value = UserContractId
    idPrefix.value = UserIdPrefix
    isSubmitCounts.value = submitCounts
})

//事件
const emit = defineEmits(['menuTap','nodeTap', 'nodeLoading'])

//树形结构异步加载数据
const defaultExpandedCids = ref([])
const ElTreeLoadNode = async (node, resolve) => {
    let contractIdRelation = '', parentId = '', primaryKeyId = '';
    if (node.level !== 0) {
        const nodeData = getObjValue(node?.data);
        contractIdRelation = nodeData?.contractIdRelation || ''
        parentId = contractIdRelation ? nodeData?.primaryKeyId : nodeData?.id
        primaryKeyId = nodeData?.id || ''
    }
    //获取数据
    const {error, code, data} = await dataFillQuery.queryWbsTreeData({
        contractId: contractId.value || '',
        contractIdRelation,
        primaryKeyId,
        parentId
    })
    //处理数据
    if (!error && code === 200) {
        let clickKey = '', defaultExpandedArr = [];
        const keys = TreeExpandKey.value || []
        const resData = getArrValue(data)
        if (keys.length > 0) {
            let lastKey = keys[keys.length-1];
            for (const item of resData) {
                //自动展开
                if (isItem(keys,item?.primaryKeyId)) {
                    defaultExpandedArr.push(item?.primaryKeyId)
                }
                //最后一个，选中点击
                if (item?.primaryKeyId === lastKey) {
                    clickKey = item?.primaryKeyId
                }
            }
        } else if (node.level === 0) {
            defaultExpandedArr.push(resData[0]?.primaryKeyId)
        }
        //自动展开
        defaultExpandedCids.value = defaultExpandedArr
        if (node.level === 0) {
            emit('nodeLoading')
        }
        resolve(resData)
        //最后一个，执行点击
        if (props.isAutoClick && clickKey) {
            await nextTick(() => {
                document.getElementById(`${idPrefix.value}${clickKey}`)?.click()
            })
        }
    } else {
        if (node.level === 0) {
            emit('nodeLoading')
        }
        resolve([])
    }
}

//节点被点击
const ElTreeClick = async (data,node) => {
    if (isAutoKeys.value) {
        let autoKeysArr = []
        await getNodeExpandKeys(node, autoKeysArr)
        const autoKeys = autoKeysArr.reverse()
        emit('nodeTap', {node, data, keys: autoKeys})
    } else {
        emit('nodeTap', {node, data, keys: []})
    }
}

//处理自动展开的节点KEY
const getNodeExpandKeys = async (node, newKeys) => {
    const parent = node?.parent ?? []
    const primaryKeyId = node?.data?.primaryKeyId ?? ''
    if (primaryKeyId) {
        newKeys.push(primaryKeyId)
        await getNodeExpandKeys(parent, newKeys)
    }
}

//鼠标右键事件
const contextMenuRef = ref(null)
const ElTreeLabelContextMenu = (e,data,node) => {
    const rows = menusData.value || [];
    if (node.level !== 1 && rows.length > 0) {
        e.preventDefault();
        treeRefNode.value = node;
        treeRefData.value = data;
        node.showTreeMenu = true
        //展开菜单
        contextMenuRef.value?.showMenu(e)
    }
}

//鼠标右键菜单被点击
const handleMenuSelect = ({key}) => {
    const node = treeRefNode.value;
    const data = treeRefData.value;
    //如果为标记菜单
    if (key === 'mark' && menuMark.value) {
        if (data.isFirst === true) {
            emit('menuTap', {key: 'cancel_mark', node, data})
        } else {
            emit('menuTap', {key: 'mark', node, data})
        }
    } else {
        emit('menuTap', {key, node, data})
    }
}

const handleMenuClosed = () => {
    const node = treeRefNode.value;
    if (!isValueNull(node)) {
        treeRefNode.value['showTreeMenu'] = false
    }
}

//设置树菜单的标记数据
const setElTreeMenuMark = (keys,isFirst) => {
    keys.forEach(item => {
        //根据 data 或者 key 拿到 Tree 组件中的 node
        let node = ElTreeRef.value.getNode(item)
        if (!!node) node.data.isFirst = isFirst;
    })
}

//设置树菜单的标记数据
const removeElTreeNode = (key) => {
    //根据 data 或者 key 拿到 Tree 组件中的 node
    let node = ElTreeRef.value.getNode(key)
    //删除 Tree 中的一个节点，使用此方法必须设置 node-key 属性
    ElTreeRef.value.remove(node)
}

// 暴露出去
defineExpose({
    setElTreeMenuMark,
    removeElTreeNode
})
</script>

<style lang="scss" scoped>
@import "../../../styles/app/tree.scss";
.data-custom-tree-node {
    .menu-icon {
        position: absolute;
        pointer-events: none;
        transition: opacity 0.2s;
        opacity: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.25);
        border-radius: 2px;
        .cu-tree-node-popover-menu-icon {
            display: flex;
            align-items: center;
            justify-content: center;
        }
    }
    &:hover {
        .menu-icon {
            opacity: 1;
            pointer-events: all;
            cursor: context-menu;
        }
    }
    .menu-icon.show {
        opacity: 1;
        pointer-events: all;
        cursor: context-menu;
    }
}
</style>
