<template>
  <div class="app-container">
    <!-- ═══ 标签页 ═══ -->
    <el-tabs v-model="activeTab">
      <!-- ═══════════ Tab 1: 物料列表（左右布局） ═══════════ -->
      <el-tab-pane label="物料列表" name="list">
        <div class="material-layout">
          <!-- 左侧：分类树 -->
          <div class="category-tree-panel">
            <div class="tree-header">
              <span class="tree-title">物料分类</span>
              <el-input
                v-model="treeFilter"
                prefix-icon="el-icon-search"
                size="mini"
                placeholder="搜索分类"
                clearable
                style="width:140px" />
            </div>
            <el-tree
              ref="categoryTree"
              :data="categoryTreeData"
              :props="{ label: 'categoryName', children: 'children' }"
              node-key="categoryId"
              :filter-node-method="filterNode"
              :expand-on-click-node="false"
              :default-expand-all="true"
              highlight-current
              @node-click="handleCategoryClick"
              class="category-tree" />
            <div class="tree-footer">
              <el-button size="mini" type="text" icon="el-icon-setting" @click="activeTab='category'">管理分类</el-button>
            </div>
          </div>

          <!-- 右侧：物料表格 -->
          <div class="material-table-panel">
            <el-form :model="queryParams" ref="queryForm" size="small" :inline="true">
              <el-form-item label="物料名称" prop="materialName">
                <el-input v-model="queryParams.materialName" placeholder="请输入物料名称" clearable @keyup.enter.native="handleQuery" />
              </el-form-item>
              <el-form-item label="物料编码" prop="materialCode">
                <el-input v-model="queryParams.materialCode" placeholder="请输入物料编码" clearable @keyup.enter.native="handleQuery" />
              </el-form-item>
              <el-form-item label="厂家/品牌" prop="brand">
                <el-select v-model="queryParams.brand" placeholder="全部品牌" clearable style="width:160px" filterable>
                  <el-option v-for="b in brandList" :key="b" :label="b" :value="b" />
                </el-select>
              </el-form-item>
              <el-form-item>
                <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
                <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
              </el-form-item>
            </el-form>

            <el-row :gutter="10" class="mb8">
              <el-col :span="1.5">
                <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd">新增</el-button>
              </el-col>
              <el-col :span="1.5">
                <el-button type="danger" plain icon="el-icon-delete" size="mini" :disabled="multiple" @click="handleDelete">删除</el-button>
              </el-col>
              <el-col :span="1.5">
                <el-button type="info" plain icon="el-icon-upload2" size="mini" @click="handleImport" v-hasPermi="['bid:material:import']">导入</el-button>
              </el-col>
              <el-col :span="1.5">
                <el-button type="warning" plain icon="el-icon-download" size="mini" @click="handleExport" v-hasPermi="['bid:material:export']">导出</el-button>
              </el-col>
              <el-col :span="1.5" v-if="currentCategoryName">
                <el-tag size="medium" closable @close="clearCategoryFilter" type="warning">
                  当前分类: {{ currentCategoryName }}
                </el-tag>
              </el-col>
            </el-row>

            <el-table
              v-loading="loading"
              :data="materialList"
              @selection-change="handleSelectionChange"
              border stripe style="width:100%"
              :header-cell-style="{ background: '#ffffff', color: '#666', fontWeight: 500, fontSize: '12px' }"
              :cell-style="{ fontSize: '12px', color: '#333' }"
              size="small">
              <el-table-column type="selection" width="44" align="center" />
              <el-table-column label="物料编码" prop="materialCode" width="110" header-align="center" align="center" />
              <el-table-column label="物料名称" prop="materialName" min-width="120" :show-overflow-tooltip="true" />
              <el-table-column label="分类" prop="categoryName" width="90" :show-overflow-tooltip="true" />
              <el-table-column label="品牌" prop="brand" width="100" :show-overflow-tooltip="true" />
              <el-table-column label="规格型号" prop="spec" min-width="120" :show-overflow-tooltip="true" />
              <el-table-column label="材质" prop="material" width="70" :show-overflow-tooltip="true" />
              <el-table-column label="用途" prop="purpose" min-width="80" :show-overflow-tooltip="true" />
              <el-table-column label="状态" align="center" width="70">
                <template slot-scope="scope">
                  <el-switch v-model="scope.row.status" active-value="0" inactive-value="1" @change="handleStatusChange(scope.row)" />
                </template>
              </el-table-column>
              <el-table-column label="操作" align="center" width="160" fixed="right">
                <template slot-scope="scope">
                  <el-button size="mini" type="text" @click="handleDetail(scope.row)">详情</el-button>
                  <el-button size="mini" type="text" @click="handleUpdate(scope.row)">修改</el-button>
                  <el-button size="mini" type="text" style="color:#f56c6c" @click="handleDelete(scope.row)">删除</el-button>
                </template>
              </el-table-column>
            </el-table>
            <el-empty v-if="!loading && total === 0" description="暂无物料数据" />
            <pagination v-show="total>0" :total="total" :page.sync="queryParams.pageNum" :limit.sync="queryParams.pageSize" @pagination="getList" />
          </div>
        </div>
      </el-tab-pane>

      <!-- ═══════════ Tab 2: 发货记录 ═══════════ -->
      <el-tab-pane label="发货记录" name="records">
        <el-select v-model="recordMaterialId" filterable placeholder="选择物料" style="width:400px" @change="loadRecords" clearable>
          <el-option v-for="m in materialOptions" :key="m.materialId"
            :label="m.materialCode + ' | ' + (m.materialName || '')" :value="m.materialId" />
        </el-select>

        <el-table v-loading="recordLoading" :data="recordList" border stripe size="small" style="width:100%;margin-top:12px">
          <el-table-column label="发货单号" width="150">
            <template slot-scope="s">{{ s.row.do_no || '-' }}</template>
          </el-table-column>
          <el-table-column label="类型" width="60" align="center">
            <template slot-scope="s"><el-tag :type="s.row.type==='client'?'primary':'warning'" size="mini" effect="plain">{{ s.row.type==='client'?'甲方':'供应商' }}</el-tag></template>
          </el-table-column>
          <el-table-column label="供应商" width="140" show-overflow-tooltip>
            <template slot-scope="s">{{ s.row.type==='client' ? '——' : (s.row.supplier_name || '-') }}</template>
          </el-table-column>
          <el-table-column label="甲方客户" width="140" show-overflow-tooltip>
            <template slot-scope="s">{{ s.row.client_name || '-' }}</template>
          </el-table-column>
          <el-table-column label="数量" prop="quantity" width="75" align="right" />
          <el-table-column label="单价" width="95" align="right"><template slot-scope="s">¥{{ s.row.unit_price || 0 }}</template></el-table-column>
          <el-table-column label="小计" width="95" align="right"><template slot-scope="s">¥{{ s.row.total_price || 0 }}</template></el-table-column>
          <el-table-column label="交货期" prop="delivery_date" width="90" align="center" />
          <el-table-column label="结单" prop="actual_close_date" width="90" align="center" />
          <el-table-column label="状态" width="80" align="center">
            <template slot-scope="s">
              <el-tag :type="recordStatusType(s.row.delivery_status)" size="small" effect="dark">{{ recordStatusLabel(s.row.delivery_status) }}</el-tag>
            </template>
          </el-table-column>
        </el-table>
        <el-empty v-if="!recordMaterialId && !recordLoading" description="请先选择物料" />
        <el-empty v-if="recordMaterialId && !recordList.length && !recordLoading" description="该物料暂无发货记录" />
      </el-tab-pane>

      <!-- ═══════════ Tab 3: 分类管理 ═══════════ -->
      <el-tab-pane label="分类管理" name="category">
        <div class="category-mgmt">
          <el-row :gutter="10" class="mb8">
            <el-col :span="1.5">
              <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAddCategory(0)">新增根分类</el-button>
            </el-col>
            <el-col :span="1.5">
              <el-button icon="el-icon-refresh" size="mini" @click="loadCategories">刷新</el-button>
            </el-col>
          </el-row>

          <el-table
            :data="categoryTreeData"
            row-key="categoryId"
            border
            size="small"
            :tree-props="{ children: 'children' }"
            default-expand-all
            style="width:100%">
            <el-table-column label="分类名称" prop="categoryName" min-width="200" />
            <el-table-column label="排序" prop="sort" width="80" align="center" />
            <el-table-column label="状态" width="80" align="center">
              <template slot-scope="scope">
                <el-tag :type="scope.row.status === '0' ? 'success' : 'danger'" size="mini">
                  {{ scope.row.status === '0' ? '正常' : '停用' }}
                </el-tag>
              </template>
            </el-table-column>
            <el-table-column label="操作" width="240" align="center">
              <template slot-scope="scope">
                <el-button size="mini" type="text" icon="el-icon-plus" @click="handleAddCategory(scope.row.categoryId)">添加子级</el-button>
                <el-button size="mini" type="text" icon="el-icon-edit" @click="handleEditCategory(scope.row)">编辑</el-button>
                <el-button size="mini" type="text" style="color:#f56c6c" icon="el-icon-delete" @click="handleDeleteCategory(scope.row)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </div>
      </el-tab-pane>
    </el-tabs>

    <!-- 新增/修改物料对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="760px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="90px">
        <el-row>
          <el-col :span="12">
            <el-form-item label="物料编码" prop="materialCode">
              <el-input v-model="form.materialCode" placeholder="请输入物料编码" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="所属分类">
              <el-cascader
                v-model="form.categoryId"
                :options="categoryTreeData"
                :props="{ label: 'categoryName', value: 'categoryId', children: 'children', checkStrictly: true, emitPath: false }"
                placeholder="请选择分类"
                clearable
                filterable
                style="width:100%" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-form-item label="物料名称" prop="materialName">
          <el-input v-model="form.materialName" placeholder="请输入物料名称" />
        </el-form-item>
        <el-row>
          <el-col :span="8">
            <el-form-item label="厂家/品牌" prop="brand">
              <el-input v-model="form.brand" placeholder="如：汇川" />
            </el-form-item>
          </el-col>
          <el-col :span="8">
            <el-form-item label="规格型号" prop="spec">
              <el-input v-model="form.spec" placeholder="如：MD500T37G" />
            </el-form-item>
          </el-col>
          <el-col :span="4">
            <el-form-item label="单位" prop="unit">
              <el-input v-model="form.unit" placeholder="台/件" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="12">
            <el-form-item label="材质" prop="material">
              <el-input v-model="form.material" placeholder="如：铜/铝合金/PVC" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="用途" prop="purpose">
              <el-input v-model="form.purpose" placeholder="如：通用负载" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-form-item label="备注" prop="remark">
          <el-input v-model="form.remark" placeholder="备注信息" />
        </el-form-item>
        <el-form-item label="性能参数">
          <div class="perf-params-form">
            <el-button type="success" size="mini" icon="el-icon-plus" @click="addPerfRow">添加参数</el-button>
            <el-table :data="perfParams" border size="small" style="margin-top:8px" max-height="240">
              <el-table-column label="参数名" width="180">
                <template slot-scope="scope">
                  <el-input v-model="scope.row.name" placeholder="如: 功率" size="small" />
                </template>
              </el-table-column>
              <el-table-column label="参数值" width="180">
                <template slot-scope="scope">
                  <el-input v-model="scope.row.value" placeholder="如: 37" size="small" />
                </template>
              </el-table-column>
              <el-table-column label="单位" width="120">
                <template slot-scope="scope">
                  <el-input v-model="scope.row.unit" placeholder="如: kW" size="small" />
                </template>
              </el-table-column>
              <el-table-column label="操作" width="80" align="center">
                <template slot-scope="scope">
                  <el-button type="text" size="small" style="color:#f56c6c" icon="el-icon-delete" @click="removePerfRow(scope.$index)" />
                </template>
              </el-table-column>
            </el-table>
          </div>
        </el-form-item>
        <el-form-item label="描述" prop="description">
          <el-input v-model="form.description" type="textarea" rows="2" />
        </el-form-item>
      </el-form>
      <div slot="footer">
        <el-button @click="cancel">取消</el-button>
        <el-button type="primary" @click="submitForm">确定</el-button>
      </div>
    </el-dialog>

    <!-- 新增/修改分类对话框 -->
    <el-dialog :title="categoryTitle" :visible.sync="categoryOpen" width="500px" append-to-body>
      <el-form ref="categoryForm" :model="categoryForm" :rules="categoryRules" label-width="90px">
        <el-form-item label="上级分类">
          <el-cascader
            v-model="categoryForm.parentId"
            :options="categoryTreeData"
            :props="{ label: 'categoryName', value: 'categoryId', children: 'children', checkStrictly: true, emitPath: false }"
            placeholder="不选则为根分类"
            clearable
            filterable
            style="width:100%" />
        </el-form-item>
        <el-form-item label="分类名称" prop="categoryName">
          <el-input v-model="categoryForm.categoryName" placeholder="请输入分类名称" />
        </el-form-item>
        <el-form-item label="排序" prop="sort">
          <el-input-number v-model="categoryForm.sort" :min="0" :max="999" />
        </el-form-item>
        <el-form-item label="状态" prop="status">
          <el-radio-group v-model="categoryForm.status">
            <el-radio label="0">正常</el-radio>
            <el-radio label="1">停用</el-radio>
          </el-radio-group>
        </el-form-item>
      </el-form>
      <div slot="footer">
        <el-button @click="categoryOpen = false">取消</el-button>
        <el-button type="primary" @click="submitCategoryForm">确定</el-button>
      </div>
    </el-dialog>

    <!-- ═══ Excel 导入对话框 ═══ -->
    <excel-import-dialog
      ref="importRef"
      title="物料导入"
      action="/bid/material/importData"
      template-action="/bid/material/importTemplate"
      template-file-name="material_template"
      update-support-label="是否更新已经存在的物料数据"
      @success="getList" />
  </div>
</template>

<script>
import { listMaterial, getMaterial, addMaterial, updateMaterial, delMaterial, listManufacturer } from "@/api/bid/material";
import { getCategoryList, addCategory, updateCategory, delCategory } from "@/api/bid/category";
import request from '@/utils/request'
import ExcelImportDialog from "@/components/ExcelImportDialog"

export default {
  name: "Material",
  components: { ExcelImportDialog },
  data() {
    return {
      loading: false, multiple: true, total: 0, materialList: [],
      open: false, title: "",
      queryParams: { pageNum: 1, pageSize: 10, materialName: null, materialCode: null, categoryId: null, brand: null, spec: null },
      form: {},
      flatCategories: [],
      categoryTreeData: [],
      brandList: [],
      perfParams: [],
      // 分类树筛选
      treeFilter: "",
      currentCategoryName: "",
      // 发货记录
      activeTab: "list",
      recordMaterialId: null,
      recordLoading: false,
      recordList: [],
      materialOptions: [],
      // 分类管理
      categoryOpen: false,
      categoryTitle: "",
      categoryForm: {},
      categoryRules: {
        categoryName: [{ required: true, message: "分类名称不能为空", trigger: "blur" }]
      },
      rules: {
        materialCode: [{ required: true, message: "物料编码不能为空", trigger: "blur" }],
        materialName: [{ required: true, message: "物料名称不能为空", trigger: "blur" }],
      }
    };
  },
  watch: {
    treeFilter(val) {
      this.$refs.categoryTree.filter(val);
    }
  },
  created() {
    this.getList();
    this.loadCategories();
    this.loadBrands();
    this.loadMaterialOptions();
  },
  methods: {
    loadCategories() {
      getCategoryList().then(res => {
        this.categoryTreeData = res.data || [];
        this.flatCategories = this.flattenTree(this.categoryTreeData, 0, "");
      });
    },
    loadBrands() {
      listManufacturer().then(res => { this.brandList = res.data || []; });
    },
    flattenTree(nodes, depth, prefix) {
      let result = [];
      for (const n of nodes) {
        result.push({ ...n, indentName: prefix + n.categoryName });
        if (n.children && n.children.length) {
          result = result.concat(this.flattenTree(n.children, depth + 1, prefix + "　"));
        }
      }
      return result;
    },
    filterNode(value, data) {
      if (!value) return true;
      return data.categoryName.indexOf(value) !== -1;
    },
    handleCategoryClick(data) {
      this.queryParams.categoryId = data.categoryId;
      this.currentCategoryName = data.categoryName;
      this.queryParams.pageNum = 1;
      this.getList();
    },
    clearCategoryFilter() {
      this.queryParams.categoryId = null;
      this.currentCategoryName = "";
      this.handleQuery();
    },
    getList() {
      this.loading = true;
      listMaterial(this.queryParams).then(res => {
        this.materialList = res.rows || [];
        this.total = res.total || 0;
        this.loading = false;
      }).catch(() => {
        this.materialList = [];
        this.total = 0;
        this.loading = false;
      });
    },
    handleQuery() { this.queryParams.pageNum = 1; this.getList(); },
    resetQuery() { this.resetForm("queryForm"); this.clearCategoryFilter(); },
    handleSelectionChange(sel) { this.multiple = !sel.length; this.ids = sel.map(s => s.materialId); },
    handleAdd() {
      this.reset();
      this.perfParams = [];
      // 自动带入当前选中的分类
      if (this.queryParams.categoryId) {
        this.form.categoryId = this.queryParams.categoryId;
      }
      this.open = true;
      this.title = "新增物料";
    },
    handleUpdate(row) {
      this.reset();
      getMaterial(row.materialId).then(res => {
        this.form = res.data;
        this.perfParams = this.parsePerfParamsToArray(this.form.performanceParams);
        this.open = true;
        this.title = "修改物料";
      });
    },
    handleDetail(row) {
      this.$router.push({ path: '/bid/material/detail', query: { id: row.materialId } });
    },
    handleDelete(row) {
      const ids = row.materialId || (this.ids || []).join(",");
      this.$modal.confirm("确认删除？").then(() => delMaterial(ids)).then(() => { this.getList(); this.$modal.msgSuccess("删除成功"); });
    },
    // ═══ Excel 导入导出 ═══
    handleImport() {
      this.$refs.importRef.open();
    },
    handleExport() {
      this.download('/bid/material/export', { ...this.queryParams }, `material_${new Date().getTime()}.xlsx`);
    },
    handleStatusChange(row) { updateMaterial(row); },
    // 性能参数
    addPerfRow() {
      this.perfParams.push({ name: '', value: '', unit: '' });
    },
    removePerfRow(index) {
      this.perfParams.splice(index, 1);
    },
    parsePerfParamsToArray(jsonStr) {
      if (!jsonStr) return [];
      try {
        const arr = JSON.parse(jsonStr);
        if (Array.isArray(arr)) return arr;
        return Object.keys(arr).map(k => ({ name: k, value: arr[k], unit: '' }));
      } catch { return []; }
    },
    reset() {
      this.form = { status: "0" };
      this.perfParams = [];
      this.resetForm && this.resetForm("form");
    },
    cancel() { this.open = false; this.reset(); },
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (!valid) return;
        if (this.perfParams.length) {
          this.form.performanceParams = JSON.stringify(this.perfParams);
        } else {
          this.form.performanceParams = null;
        }
        const action = this.form.materialId ? updateMaterial : addMaterial;
        action(this.form).then(() => { this.$modal.msgSuccess("操作成功"); this.open = false; this.getList(); });
      });
    },
    // ═══════════ 分类管理 ═══════════
    handleAddCategory(parentId) {
      this.categoryForm = { parentId: parentId || 0, sort: 0, status: "0" };
      this.categoryTitle = "新增分类";
      this.categoryOpen = true;
    },
    handleEditCategory(row) {
      this.categoryForm = { ...row };
      this.categoryTitle = "编辑分类";
      this.categoryOpen = true;
    },
    handleDeleteCategory(row) {
      this.$modal.confirm("确认删除分类「" + row.categoryName + "」？").then(() => {
        return delCategory(row.categoryId);
      }).then(() => {
        this.$modal.msgSuccess("删除成功");
        this.loadCategories();
      }).catch(err => {
        if (err && err.message) this.$modal.msgError(err.message);
      });
    },
    submitCategoryForm() {
      this.$refs["categoryForm"].validate(valid => {
        if (!valid) return;
        const action = this.categoryForm.categoryId ? updateCategory : addCategory;
        action(this.categoryForm).then(() => {
          this.$modal.msgSuccess("操作成功");
          this.categoryOpen = false;
          this.loadCategories();
        });
      });
    },
    // ═══════════ 发货记录 ═══════════
    loadMaterialOptions() {
      listMaterial({ pageSize: 999 }).then(r => { this.materialOptions = r.rows || [] }).catch(() => {})
    },
    loadRecords(materialId) {
      if (!materialId) { this.recordList = []; return }
      this.recordLoading = true
      request({ url: '/bid/delivery/materialRecords/' + materialId, method: 'get' })
        .then(r => { this.recordList = (r.data || []).map(d => ({
          ...d, deliveryDate: d.deliveryDate ? d.deliveryDate.substring(0, 10) : '',
          actualCloseDate: d.actualCloseDate ? d.actualCloseDate.substring(0, 10) : ''
        })); this.recordLoading = false })
        .catch(() => { this.recordLoading = false })
    },
    recordStatusType(s) { return { pending: "warning", transit: "primary", history: "success" }[s] || "" },
    recordStatusLabel(s) { return { pending: "待发", transit: "在途", history: "已收货" }[s] || s || "-" },
  }
};
</script>

<style scoped>
.app-container {
  background: var(--bg-page);
  padding: 16px 20px;
  border-radius: var(--radius-base);
}

/* ═══ 左右布局 ═══ */
.material-layout {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.category-tree-panel {
  width: 200px;
  flex-shrink: 0;
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 220px);
  position: sticky;
  top: 0;
}

.tree-header {
  padding: 10px 12px;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tree-title {
  font-size: 13px;
  font-weight: 500;
  color: #333;
}

.category-tree {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.category-tree >>> .el-tree-node__content {
  height: 32px;
  font-size: 13px;
}

.category-tree >>> .el-tree-node.is-current > .el-tree-node__content {
  background: #fef0f0;
  color: #e4393c;
}

.tree-footer {
  padding: 8px 12px;
  border-top: 1px solid #f0f0f0;
  text-align: center;
}

.material-table-panel {
  flex: 1;
  min-width: 0;
  overflow-x: hidden;
}

/* 紧凑表格行 */
.el-table td { padding: 4px 4px !important; }
.el-table th { padding: 6px 4px !important; }

/* 圆角按钮 */
.el-button--mini { border-radius: var(--radius-base) !important; }

/* 搜索表单样式 */
.el-form--inline .el-form-item {
  margin-bottom: 16px;
}

.el-form--inline .el-form-item:last-child {
  margin-bottom: 0;
}

/* 操作按钮区域间距 */
.mb8 {
  margin-bottom: 12px;
}

/* 表格行高 */
>>> .el-table .el-table__row {
  height: 42px;
}

/* 表头字体加粗 */
>>> .el-table thead th {
  font-weight: 700;
}

/* 开关居中 */
>>> .el-table .el-switch {
  margin: 0 auto;
}

/* 对话框内表格边距 */
.perf-params-form {
  margin-top: 4px;
}

/* 搜索框宽度统 */
.el-input--small {
  width: 160px;
}

.el-form-item:last-child .el-input--small {
  width: auto;
}

/* 按钮组间距 */
.el-button + .el-button {
  margin-left: 8px;
}

/* 分类管理 */
.category-mgmt {
  background: #fff;
  padding: 16px;
  border: 1px solid #e5e5e5;
  border-radius: 4px;
}
</style>
