<template>
    <!-- 表格公共组件 -->
    <div>
        <!-- 表单搜索 -->
        <el-form
            :model="queryParams"
            ref="queryFormRef"
            size="small"
            :inline="true"
            label-width="100px"
            v-show="showSearch"
        >
            <el-form-item
                v-for="(item, v) in formLabel"
                :key="v"
                :label="item.f_label"
                :prop="item.f_model"
            >
                <el-input
                    v-if="item.f_type === 'ipt'"
                    v-model="queryParams[item.f_model]"
                    :placeholder="`请输入${item.f_label}`"
                    clearable
                    style="width: 240px"
                />
                <el-select
                    v-if="item.f_type === 'sel'"
                    v-model="queryParams[item.f_model]"
                    clearable
                    filterable
                    style="width: 240px"
                    :placeholder="`请选择${item.f_label}`"
                >
                    <el-option
                        v-for="(sel, v) in item.f_selList"
                        :key="v"
                        :label="sel.label"
                        :value="sel.value"
                    />
                </el-select>
                <el-cascader
                    v-if="item.f_type === 'selCas'"
                    v-model="queryParams[item.f_model]"
                    :options="item.f_selList"
                    :props="item.optionProps"
                    :show-all-levels="false"
                    clearable
                    style="width: 240px"
                />
                <el-date-picker
                    v-if="item.f_type === 'date'"
                    v-model="queryParams[item.f_model]"
                    style="width: 240px"
                    value-format="yyyy-MM-dd"
                    type="daterange"
                    range-separator="-"
                    start-placeholder="开始日期"
                    end-placeholder="结束日期"
                />
            </el-form-item>
            <el-form-item>
                <el-button
                    type="primary"
                    icon="el-icon-search"
                    size="mini"
                    @click="handleQuery"
                    >查询</el-button
                >
                <el-button
                    type="warning"
                    icon="el-icon-refresh"
                    size="mini"
                    @click="resetQuery"
                    >重置</el-button
                >
            </el-form-item>
        </el-form>
        <!-- 按钮集群 -->
        <el-row class="btn-container">
            <div class="btn-handler">
                <slot name="btn" :pageParams="queryParams"></slot>
            </div>
            <ToolbarModel
                :showSearch.sync="showSearch"
                :indexNumShow.sync="indexNumShow"
                :selectionShow.sync="selectionShow"
                :handleShow.sync="handleShow"
                :columns="columCheckList"
                @queryTable="getTableList"
            />
        </el-row>
        <!-- 表格 -->

        <el-table
            :data="tableList"
            border
            ref="tableRef"
            select-on-indeterminate
            style="width: 100%"
        >
            <el-table-column
                type="selection"
                width="45"
                align="center"
                v-if="selectionShow"
            />
            <el-table-column
                width="55"
                align="center"
                label="序号"
                type="index"
                v-if="indexNumShow"
            />
            <el-table-column
                v-for="(item, v) in tableColumCheckProps"
                :key="v"
                :label="item.t_label"
                :prop="item.t_props"
                :width="item.t_width"
                align="center"
                show-overflow-tooltip
            >
                <template slot-scope="scope">
                    <!-- 判断当前列数据是否需要使用插槽的数据 -->
                    <template v-if="item.t_slot">
                        <slot :data="scope.row" :name="item.t_slot"></slot>
                    </template>
                    <template v-else>
                        {{ scope.row[item.t_props] || '-' }}
                    </template>
                </template>
            </el-table-column>
            <el-table-column
                align="center"
                label="操作"
                v-if="handleShow"
                :min-width="dynamicWidth"
            >
                <template slot-scope="{ row }">
                    <div class="optionDivRef">
                        <slot :data="row" name="handle">-</slot>
                    </div>
                </template>
            </el-table-column>
        </el-table>
    </div>
</template>

<script>
import ToolbarModel from '../ToolbarModel'
export default {
    components: { ToolbarModel },
    props: {
        /** 表单查询条件 */
        formLabel: {
            type: Array,
            default: () => [],
        },
        /** 列表请求接口 */
        requestApi: {
            type: Function,
            default: () => function () {},
        },
        /* 列表配置项 */
        columnsList: {
            type: Array,
            default: () => [],
        },
    },
    computed: {
        /* 根据操作栏控制表头是否显示 */
        tableColumCheckProps() {
            return this.columCheckList.filter((e) => {
                return e.checked != false
            })
        },
    },
    watch: {
        handleShow: {
            handler(newValue) {
                if (!newValue) {
                    this.dynamicWidth = 0
                }
            },
        },
    },
    data() {
        return {
            // 列表接口查询参数
            queryParams: {},
            // 搜索区域是否隐藏
            showSearch: true,
            // 是否显示复选框
            selectionShow: true,
            // 是否显示序号
            indexNumShow: true,
            // 是否显示操作列
            handleShow: true,
            // 列表每列 label
            columCheckList: [],
            // 列表数据源
            tableList: [
                { scrapNum: '测试' },
                { scrapNum: '123' },
                { scrapNum: '测试' },
            ],
            // 操作列最小宽度
            dynamicWidth: 0,
        }
    },

    created() {
        this.columCheckList = this.columnsList
        this.columCheckList = this.columCheckList.map((e) => {
            this.$set(e, 'checked', true)
            return e
        })
        /* 生成查询参数 */
        this.formLabel.map((e) => {
            this.$set(this.queryParams, e.f_model, '')
        })
        this.getTableList()
    },
    updated() {
        // 更新时重新计算操作列需要的最小宽度 确保展示无误
        this.dynamicWidth = this.getOperatorWidth()
    },
    methods: {
        /** 获取列表数据 */
        async getTableList() {
            const res = await this.requestApi({ ...this.queryParams })
            console.log(res, '列表数据')
        },
        /** 查询按钮 */
        handleQuery() {
            this.getTableList()
        },
        /** 重置按钮 */
        resetQuery() {
            this.$refs.queryFormRef.resetFields()
            this.getTableList()
        },
        /** 动态设置操作列的列宽 */
        getOperatorWidth() {
            const operatorColumn =
                document.getElementsByClassName('optionDivRef')

            // 默认宽度
            let width = 100
            // 内间距
            let paddingSpacing = 0
            // 按钮数量
            let buttonCount = 0

            if (operatorColumn.length > 0) {
                Array.prototype.forEach.call(operatorColumn, function (item) {
                    // 最宽的宽度
                    width = width > item.offsetWidth ? width : item.offsetWidth
                    const buttons = item.getElementsByClassName('el-button')
                    buttonCount = buttons.length
                    buttonCount =
                        buttonCount > buttons.length
                            ? buttonCount
                            : buttons.length
                })
                // 如果按钮数量大于2，宽度要加上边距*（按钮数量-1）
                // if (buttonCount > 2) {
                //     width += paddingSpacing * (buttonCount - 1)
                // }
                return width
            }
        },
    },
}
</script>

<style scoped lang="scss">
.btn-container {
    margin-bottom: 6px;
    display: flex;
    align-items: center;
}
::v-deep .btn-handler {
    flex: 1;

    .el-button {
        padding: 6px 18px;
    }
}

::v-deep .optionDivRef {
    white-space: nowrap;
    display: inline-block;

    .el-button {
        padding: 6px 12px;
    }
}
</style>
