<template>
    <div class="popupSelect-container">
        <div class="el-select" @click.stop="openDialog">
            <div class="el-select__tags" v-if="multiple" ref="tags"
                :style="{ 'max-width': inputWidth - 32 + 'px', width: '100%',cursor:'pointer' }">
                <span v-if="collapseTags && tagsList.length">
                    <el-tag :closable="!selectDisabled" :size="collapseTagSize" type="info"
                        @close="deleteTag($event, 0)" disable-transitions>
                        <span class="el-select__tags-text">{{ tagsList[0].fullName }}</span>
                    </el-tag>
                    <el-tag v-if="tagsList.length > 1" :closable="false" type="info"
                        disable-transitions>
                        <span class="el-select__tags-text">+ {{ tagsList.length - 1 }}</span>
                    </el-tag>
                </span>
                <transition-group @after-leave="resetInputHeight" v-if="!collapseTags">
                    <el-tag v-for="(item,i) in tagsList" :key="item.id" :size="collapseTagSize"
                        :closable="!selectDisabled" type="info" @close="deleteTag($event, i)"
                        disable-transitions>
                        <span class="el-select__tags-text">{{ item.fullName }}</span>
                    </el-tag>
                </transition-group>
            </div>
            <el-input ref="reference" v-model="innerValue" type="text"
                :placeholder="currentPlaceholder" :disabled="selectDisabled" readonly
                :validate-event="false" :tabindex="(multiple) ? '-1' : null"
                @mouseenter.native="inputHovering = true"
                @mouseleave.native="inputHovering = false">
                <template slot="suffix">
                    <i v-show="!showClose"
                        :class="['el-select__caret', 'el-input__icon', 'el-icon-arrow-up']"></i>
                    <i v-if="showClose" class="el-select__caret el-input__icon el-icon-circle-close"
                        @click="handleClearClick"></i>
                </template>
            </el-input>
        </div>
        <el-dialog :title="title" :close-on-click-modal="false" :visible.sync="visible"
            class="JNPF-dialog JNPF-dialog_center transfer-dialog" lock-scroll append-to-body
            width="800px" :modal-append-to-body="false" @close="onClose">
            <div class="transfer__body">
                <div class="transfer-pane">
                    <div class="transfer-pane__tools">
                        <el-input placeholder="请输入关键词查询" v-model="pagination.keyword"
                            @keyup.enter.native="search" clearable class="search-input">
                            <el-button slot="append" icon="el-icon-search"
                                @click="search"></el-button>
                        </el-input>
                    </div>
                    <div class="transfer-pane__body left-pane">
                        <el-tabs v-model="activeName" class="transfer-pane__body-tab"
                            :class="{'hasSys-tab':hasSys}" v-if="selectType==='all'">
                            <el-tab-pane label="全部数据" name="all">
                                <el-tree :data="treeData" :props="props" check-on-click-node
                                    @node-click="handleNodeClick" class="JNPF-common-el-tree"
                                    node-key="id" v-loading="loading" lazy :load="loadNode"
                                    v-if="!isAsync" :default-expanded-keys="defaultExpandedKeys">
                                    <span class="custom-tree-node" slot-scope="{ node, data }"
                                        :title="node.label">
                                        <i :class="data.icon"></i>
                                        <span class="text">{{node.label}}</span>
                                    </span>
                                </el-tree>
                                <div class="single-list" ref="infiniteBody" v-if="isAsync"
                                    v-loading="loading && pagination.currentPage==1">
                                    <template v-if="treeData.length">
                                        <div v-for="(item,index) in treeData" :key="index"
                                            class="selected-item-user"
                                            @click="handleNodeClick(item)">
                                            <div class="selected-item-main">
                                                <el-avatar :size="36"
                                                    :src="define.comUrl+item.headIcon"
                                                    class="selected-item-headIcon">
                                                </el-avatar>
                                                <div class="selected-item-text">
                                                    <p class="name">{{item.fullName}}</p>
                                                    <p class="organize" :title="item.organize">
                                                        {{item.organize}}</p>
                                                </div>
                                            </div>
                                        </div>
                                    </template>
                                    <el-empty description="暂无数据" :image-size="120"
                                        v-else></el-empty>
                                </div>
                            </el-tab-pane>
                            <el-tab-pane label="当前组织" name="department">
                                <div class="single-list" v-loading="loading">
                                    <template v-if="treeData2.length">
                                        <div v-for="(item,index) in treeData2" :key="index"
                                            class="selected-item-user"
                                            @click="handleNodeClick2(item)">
                                            <div class="selected-item-main">
                                                <el-avatar :size="36"
                                                    :src="define.comUrl+item.headIcon"
                                                    class="selected-item-headIcon">
                                                </el-avatar>
                                                <div class="selected-item-text">
                                                    <p class="name">{{item.fullName}}</p>
                                                    <p class="organize" :title="item.organize">
                                                        {{item.organize}}</p>
                                                </div>
                                            </div>
                                        </div>
                                    </template>
                                    <el-empty description="暂无数据" :image-size="120"
                                        v-else></el-empty>
                                </div>
                            </el-tab-pane>
                            <el-tab-pane label="我的下属" name="subordinates">
                                <div class="single-list" v-loading="loading">
                                    <template v-if="treeData3.length">
                                        <div v-for="(item,index) in treeData3" :key="index"
                                            class="selected-item-user"
                                            @click="handleNodeClick2(item)">
                                            <div class="selected-item-main">
                                                <el-avatar :size="36"
                                                    :src="define.comUrl+item.headIcon"
                                                    class="selected-item-headIcon">
                                                </el-avatar>
                                                <div class="selected-item-text">
                                                    <p class="name">{{item.fullName}}</p>
                                                    <p class="organize" :title="item.organize">
                                                        {{item.organize}}</p>
                                                </div>
                                            </div>
                                        </div>
                                    </template>
                                    <el-empty description="暂无数据" :image-size="120"
                                        v-else></el-empty>
                                </div>
                            </el-tab-pane>
                            <el-tab-pane label="系统变量" name="system">
                                <el-tree :data="treeData4" :props="props"
                                    :expand-on-click-node="false" check-on-click-node
                                    @node-click="handleNodeClick2" class="JNPF-common-el-tree"
                                    node-key="id" v-loading="loading">
                                    <span class="custom-tree-node" slot-scope="{ node }"
                                        :title="node.label">
                                        <i class="icon-ym icon-ym-tree-user2"></i>
                                        <span class="text">{{node.label}}</span>
                                    </span>
                                </el-tree>
                            </el-tab-pane>
                        </el-tabs>
                        <template v-else>
                            <div class="custom-title">全部数据</div>
                            <div class="single-list" ref="infiniteBody">
                                <template v-if="ableList.length">
                                    <div v-for="(item,index) in ableList" :key="index"
                                        class="selected-item-user" @click="handleNodeClick2(item)">
                                        <div class="selected-item-main">
                                            <el-avatar :size="36" :src="define.comUrl+item.headIcon"
                                                class="selected-item-headIcon">
                                            </el-avatar>
                                            <div class="selected-item-text">
                                                <p class="name">{{item.fullName}}</p>
                                                <p class="organize" :title="item.organize">
                                                    {{item.organize}}</p>
                                            </div>
                                        </div>
                                    </div>
                                </template>
                                <el-empty description="暂无数据" :image-size="120" v-else></el-empty>
                            </div>
                        </template>
                    </div>
                </div>
                <div class="transfer-pane">
                    <div class="transfer-pane__tools">
                        <span>已选</span>
                        <el-button @click="removeAll" type="text"
                            class="removeAllBtn">清空列表</el-button>
                    </div>
                    <div class="transfer-pane__body shadow right-pane">
                        <template v-if="selectedData.length">
                            <div v-for="(item,index) in selectedData" :key="index"
                                class="selected-item-user">
                                <div class="selected-item-main">
                                    <el-avatar :size="36" :src="define.comUrl+item.headIcon"
                                        class="selected-item-headIcon">
                                    </el-avatar>
                                    <div class="selected-item-text">
                                        <p class="name">{{item.fullName}}</p>
                                        <p class="organize" :title="item.organize">{{item.organize}}
                                        </p>
                                    </div>
                                    <i class="el-icon-delete" @click="removeData(index)"></i>
                                </div>
                            </div>
                        </template>
                        <el-empty description="暂无数据" :image-size="120" v-else></el-empty>
                    </div>
                </div>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button
                    @click="setDefault(),visible=false">{{$t('common.cancelButton')}}</el-button>
                <el-button type="primary"
                    @click="confirm">{{$t('common.confirmButton')}}</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
import { getImUserSelector, getUserInfoList, getSubordinates, getOrganization, getSelectedUserList } from '@/api/permission/user'
import { addResizeListener, removeResizeListener } from 'element-ui/src/utils/resize-event';
import emitter from 'element-ui/src/mixins/emitter'
let { methods: { dispatch } } = emitter
export default {
    name: 'JnpfUserSelect',
    inject: {
        elForm: {
            default: ''
        },
        elFormItem: {
            default: ''
        }
    },
    props: {
        value: {
            type: [String, Array],
            default: ''
        },
        placeholder: {
            type: String,
            default: '请选择'
        },
        title: {
            type: String,
            default: '选择用户'
        },
        disabled: {
            type: Boolean,
            default: false
        },
        multiple: {
            type: Boolean,
            default: false
        },
        collapseTags: {
            type: Boolean,
            default: false
        },
        clearable: {
            type: Boolean,
            default: true
        },
        hasSys: {
            type: Boolean,
            default: false
        },
        selectType: {
            type: String,
            default: 'all'
        },
        ableRelationIds: {
            type: [Array, String],
            default: () => []
        },
        ableIds: {
            type: Array,
            default: () => []
        },
        filterIds: {
            type: Array,
            default: () => []
        },
        size: String,
        filterType: {
            type: String,
            default: '1'
            //1 不查看filterIds中的用户
            //2 仅查看filterIds中的用户
        }
    },
    data() {
        return {
            visible: false,
            activeName: '',
            nodeId: '',
            innerValue: '',
            loading: false,
            props: {
                children: 'children',
                label: 'fullName',
                isLeaf: 'isLeaf'
            },
            defaultExpandedKeys: [],
            treeData: [],
            treeData2: [],
            treeData3: [],
            treeData4: [{
                id: 'currentUser',
                fullName: '当前用户',
                headIcon: '/api/file/Image/userAvatar/001.png'
            }],
            ableList: [],
            selectedData: [],
            tagsList: [],
            inputHovering: false,
            inputWidth: 0,
            initialInputHeight: 0,
            isAsync: false,
            finish: false,
            pagination: {
                keyword: '',
                currentPage: 1,
                pageSize: 20,
            },
            ableQuery: {
                ids: [],
            }
        }
    },
    watch: {
        value(val) {
            this.setDefault()
        },
        selectDisabled() {
            this.$nextTick(() => {
                this.resetInputHeight();
            });
        },
        activeName(val) {
            this.pagination.keyword = ''
            this.isAsync = false
            if (!val) return
            this.nodeId = '0'
            this.treeData = []
            this.treeData2 = []
            this.treeData3 = []
            this.getData()
        }
    },
    computed: {
        showClose() {
            let hasValue = this.multiple
                ? Array.isArray(this.value) && this.value.length > 0
                : this.value !== undefined && this.value !== null && this.value !== '';
            let criteria = this.clearable &&
                !this.selectDisabled &&
                this.inputHovering &&
                hasValue;
            return criteria;
        },
        currentPlaceholder() {
            if (this.multiple && Array.isArray(this.value) && this.value.length) {
                return ''
            } else {
                return this.placeholder
            }
        },
        selectDisabled() {
            return this.disabled || (this.elForm || {}).disabled;
        },
        _elFormItemSize() {
            return (this.elFormItem || {}).elFormItemSize;
        },
        selectSize() {
            return this.size || this._elFormItemSize || (this.$ELEMENT || {}).size;
        },
        collapseTagSize() {
            return ['small', 'mini'].indexOf(this.selectSize) > -1
                ? 'mini'
                : 'small';
        },
    },
    created() {
        this.setDefault()
    },
    mounted() {
        addResizeListener(this.$el, this.handleResize);
        const reference = this.$refs.reference;
        if (reference && reference.$el) {
            const sizeMap = {
                medium: 36,
                small: 32,
                mini: 28
            };
            const input = reference.$el.querySelector('input');
            this.initialInputHeight = input.getBoundingClientRect().height || sizeMap[this.selectSize];
        }
        if (this.multiple) {
            this.resetInputHeight();
        }
        this.$nextTick(() => {
            if (reference && reference.$el) {
                this.inputWidth = reference.$el.getBoundingClientRect().width;
            }
        });
        this.setDefault()
    },
    beforeDestroy() {
        if (this.$el && this.handleResize) removeResizeListener(this.$el, this.handleResize);
    },
    methods: {
        getAbleList() {
            this.loading = true
            let query = {
                pagination: this.pagination,
                ...this.ableQuery
            }
            getSelectedUserList(query).then(res => {
                if (res.data.list.length < this.pagination.pageSize) {
                    this.finish = true
                }
                this.ableList = [...this.ableList, ...res.data.list]
                this.loading = false
            }).catch(() => {
                this.loading = false
            })
        },
        bindScroll() {
            let _this = this,
                vBody = _this.$refs.infiniteBody;
            vBody.addEventListener("scroll", function () {
                if (vBody.scrollHeight - vBody.clientHeight - vBody.scrollTop <= 200 && !_this.loading && !_this.finish) {
                    _this.pagination.currentPage += 1
                    if (_this.selectType === 'all') {
                        _this.getAllList()
                    } else {
                        _this.getAbleList()
                    }
                }
            });
        },
        onClose() {
            this.activeName = ''
        },
        openDialog() {
            if (this.selectDisabled) return
            this.visible = true
            this.pagination.keyword = ''
            this.nodeId = '0'
            this.isAsync = false
            this.finish = false
            this.selectedData = []
            if (this.selectType === 'all') {
                this.activeName = 'all'
                this.setDefault()
            } else {
                if (this.selectType === 'custom') {
                    this.ableQuery = {
                        ids: this.ableIds,
                    }
                } else {
                    const suffix = '--' + this.getAbleKey(this.selectType);
                    let ableIds = !this.ableRelationIds ? [] : Array.isArray(this.ableRelationIds) ? this.ableRelationIds : [this.ableRelationIds];
                    this.ableQuery.ids = ableIds.map(o => o + suffix);
                }
                this.getData()
                this.$nextTick(() => {
                    this.bindScroll()
                    this.setDefault()
                })
            }
        },
        getAbleKey(selectType) {
            if (selectType === 'dep') return 'department';
            if (selectType === 'pos') return 'position';
            return selectType;
        },
        confirm() {
            if (this.multiple) {
                this.innerValue = ''
                this.tagsList = JSON.parse(JSON.stringify(this.selectedData))
                let selectedIds = this.selectedData.map(o => o.id)
                this.$emit('input', selectedIds)
                this.$emit('change', selectedIds, this.selectedData)
                dispatch.call(this, 'ElFormItem', 'el.form.change', selectedIds)
            } else {
                if (!this.selectedData.length) {
                    this.innerValue = ''
                    this.$emit('input', '')
                    this.$emit('change', '', {})
                    dispatch.call(this, 'ElFormItem', 'el.form.change', '')
                    this.visible = false
                    return
                }
                this.innerValue = this.selectedData[0].fullName
                let selectedIds = this.selectedData.map(o => o.id)
                this.$emit('input', selectedIds[0])
                this.$emit('change', selectedIds[0], this.selectedData[0])
                dispatch.call(this, 'ElFormItem', 'el.form.change', selectedIds[0])
            }
            this.visible = false
        },
        setDefault() {
            if (!this.value || !this.value.length) {
                this.innerValue = ''
                this.selectedData = []
                this.tagsList = []
                this.$nextTick(() => {
                    this.resetInputHeight();
                })
                return
            }
            const arr = this.multiple ? this.value : [this.value]
            const hasSysItem = arr.some(o => o === 'currentUser')
            getUserInfoList(arr).then(res => {
                this.selectedData = res.data.list
                if (hasSysItem) {
                    this.selectedData.push({
                        id: 'currentUser',
                        fullName: '当前用户',
                        headIcon: '/api/file/Image/userAvatar/001.png'
                    })
                }
                if (this.multiple) {
                    this.innerValue = ''
                    this.tagsList = JSON.parse(JSON.stringify(this.selectedData))
                } else {
                    this.innerValue = this.selectedData.length ? this.selectedData[0].fullName : ''
                }
                this.$nextTick(() => {
                    if (this.multiple) {
                        this.resetInputHeight();
                    }
                });
            })
        },
        getData() {
            if (this.selectType === 'all') {
                if (this.activeName === 'all') {
                    this.getAllList()
                } else if (this.activeName === 'department') {
                    this.loading = true
                    getOrganization({ keyword: this.pagination.keyword, organizeId: '0' }).then(res => {
                        this.treeData2 = res.data
                        this.loading = false
                    })
                } else if (this.activeName === 'subordinates') {
                    this.loading = true
                    getSubordinates(this.pagination.keyword).then(res => {
                        this.treeData3 = res.data
                        this.loading = false
                    })
                } else {
                    this.loading = false
                }
            } else {
                this.pagination.currentPage = 1
                this.finish = false
                this.ableList = []
                this.getAbleList()
            }
        },
        search() {
            this.nodeId = '0'
            this.treeData = []
            this.pagination.currentPage = 1
            this.isAsync = !!this.pagination.keyword
            this.finish = false
            if (this.isAsync && this.activeName === 'all') {
                this.$nextTick(() => {
                    this.bindScroll()
                })
            }
            if (this.selectType === 'all') {
                this.getData()
            } else {
                this.ableList = []
                this.getAbleList()
            }
        },
        getAllList() {
            this.loading = true

            if (this.filterIds) {
                this.pagination.pageSize = 100
            }

            if (this.pagination.keyword) this.nodeId = '0'
            getImUserSelector(this.nodeId, this.pagination).then(res => {
                this.pagination.pageSize = 20
                let newData = []
                //根据filterIds过滤掉res.data.list中id在filterIds中存在的数据
                if (this.filterIds && this.filterIds.length) {
                    if (this.filterType == '1') {
                        newData = res.data.list.filter(item => !this.filterIds.includes(item.id))
                    } else if (this.filterType == '2') {
                        newData = res.data.list.filter(item => (this.filterIds.includes(item.id) || item.hasChildren))
                    }

                } else {
                    newData = res.data.list
                }

                if (this.pagination.keyword) {
                    if (newData.length < this.pagination.pageSize) {
                        this.finish = true
                    }
                    this.treeData = [...this.treeData, ...newData]
                } else {
                    this.treeData = newData
                }
                this.loading = false
                if (!this.pagination.keyword && this.treeData.length && this.nodeId == '0') {
                    this.defaultExpandedKeys = [this.treeData[0].id]
                }
            })
        },
        loadNode(node, resolve) {
            if (this.visible === false) return []
            if (node.level === 0) {
                this.nodeId = '0'
                return resolve(this.treeData)
            }
            this.nodeId = node.data.id


            console.log('filterIds')
            console.log(this.filterIds)

            getImUserSelector(this.nodeId).then(res => {

                let newData = []
                //根据filterIds过滤掉res.data.list中id在filterIds中存在的数据
                if (this.filterIds && this.filterIds.length) {
                    if (this.filterType == '1') {
                        newData = res.data.list.filter(item => !this.filterIds.includes(item.id))
                    } else if (this.filterType == '2') {
                        newData = res.data.list.filter(item => (this.filterIds.includes(item.id) || item.hasChildren))
                    }
                } else {
                    newData = res.data.list
                }
                resolve(newData)
            })
        },
        handleNodeClick(data) {
            if (data.type !== 'user') return
            this.handleNodeClick2(data)
        },
        handleNodeClick2(data) {
            const boo = this.selectedData.some(o => o.id === data.id)
            if (boo) return
            this.multiple ? this.selectedData.push(data) : this.selectedData = [data]
        },
        removeAll() {
            this.selectedData = []
        },
        removeData(index) {
            this.selectedData.splice(index, 1)
        },
        deleteTag(event, index) {
            this.selectedData.splice(index, 1)
            this.confirm()
            event.stopPropagation();
        },
        handleClearClick(event) {
            this.selectedData = []
            this.confirm()
            event.stopPropagation();
        },
        resetInputWidth() {
            this.inputWidth = this.$refs.reference.$el.getBoundingClientRect().width;
        },
        handleResize() {
            this.resetInputWidth();
            if (this.multiple) this.resetInputHeight();
        },
        resetInputHeight() {
            if (this.collapseTags) return;
            this.$nextTick(() => {
                if (!this.$refs.reference) return;
                let inputChildNodes = this.$refs.reference.$el.childNodes;
                let input = [].filter.call(inputChildNodes, item => item.tagName === 'INPUT')[0];
                const tags = this.$refs.tags;
                const tagsHeight = tags ? Math.round(tags.getBoundingClientRect().height) : 0;
                const sizeInMap = this.initialInputHeight || 40;
                input.style.height = this.selectedData.length === 0
                    ? sizeInMap + 'px'
                    : Math.max(
                        tags ? (tagsHeight + (tagsHeight > sizeInMap ? 6 : 0)) : 0,
                        sizeInMap
                    ) + 'px';
            });
        },
        resetInputWidth() {
            this.inputWidth = this.$refs.reference.$el.getBoundingClientRect().width;
        },
        handleResize() {
            this.resetInputWidth();
            if (this.multiple) this.resetInputHeight();
        }
    },
}
</script>