<template>
  <div class="app-container">
    <el-card shadow="never">
      <div class="filter-wrapper">
        <div class="filter-container">
          <el-input
              v-model="queryParams.keyword"
              placeholder="请输入名称、俗名或规格"
              style="width: 240px; margin-right: 10px;"
              clearable
              @input="handleInputSearch"
          />

          <el-select
              v-model="queryParams.company"
              placeholder="所属公司"
              clearable
              filterable
              default-first-option
              style="width: 120px; margin-right: 10px;"
              @change="handleQuery"
          >
            <el-option v-for="item in companyOptions" :key="item" :label="item" :value="item" />
          </el-select>

          <el-select
              v-model="queryParams.category"
              placeholder="类别"
              clearable
              filterable
              allow-create
              default-first-option
              style="width: 240px; margin-right: 10px;"
              @change="handleQuery"
              popper-class="long-dropdown"
          >
            <el-option v-for="item in categoryOptions" :key="item" :label="item" :value="item" />
          </el-select>

          <el-select
              v-model="queryParams.type"
              placeholder="类型"
              clearable
              filterable
              allow-create
              default-first-option
              style="width: 140px; margin-right: 10px;"
              @change="handleQuery"
              popper-class="long-dropdown"
          >
            <el-option v-for="item in typeOptions" :key="item" :label="item" :value="item" />
          </el-select>

          <el-select
              v-model="queryParams.isEnabled"
              placeholder="状态"
              clearable
              style="width: 100px; margin-right: 10px;"
              @change="handleQuery"
          >
            <el-option label="启用" :value="1" />
            <el-option label="禁用" :value="0" />
          </el-select>

          <el-button type="primary" plain @click="handleQuery">搜索</el-button>
          <el-button plain @click="resetQuery">重置</el-button>
        </div>

        <div class="right-toolbar">
          <el-button type="success" plain @click="handleExport" :loading="exportLoading" style="margin-right: 10px">
            <el-icon style="margin-right: 5px"><Download /></el-icon>导出库存统计
          </el-button>

          <el-button v-if="userStore.hasPermission('material_list:operation')" type="primary" @click="handleAdd" style="margin-right: 10px">
            <el-icon style="margin-right: 5px"><Plus /></el-icon>新增
          </el-button>

          <el-tooltip content="刷新" placement="top">
            <el-button circle :icon="Refresh" @click="getList" />
          </el-tooltip>

          <el-dropdown trigger="click" @command="handleSizeChange">
            <el-button circle :icon="Rank" style="margin-left: 8px" title="表格密度" />
            <template #dropdown>
              <el-dropdown-menu>
                <el-dropdown-item command="large">宽松 (默认)</el-dropdown-item>
                <el-dropdown-item command="default">中等</el-dropdown-item>
                <el-dropdown-item command="small">紧凑</el-dropdown-item>
              </el-dropdown-menu>
            </template>
          </el-dropdown>

          <el-popover placement="bottom" :width="150" trigger="click">
            <template #reference>
              <el-button circle :icon="Setting" style="margin-left: 8px" title="列设置" />
            </template>
            <div class="column-setting-list">
              <div style="font-weight: bold; margin-bottom: 5px; border-bottom: 1px solid #eee; padding-bottom: 5px">
                列展示设置
              </div>
              <el-checkbox v-model="columns.id.visible" label="ID" :disabled="!userStore.hasPermission(permissionMap.id)" />
              <el-checkbox v-model="columns.companyName.visible" label="所属公司" :disabled="!userStore.hasPermission(permissionMap.companyName)" />
              <el-checkbox v-model="columns.name.visible" label="名称" :disabled="!userStore.hasPermission(permissionMap.name)" />
              <el-checkbox v-model="columns.commonName.visible" label="俗名" :disabled="!userStore.hasPermission(permissionMap.commonName)" />
              <el-checkbox v-model="columns.category.visible" label="类别" :disabled="!userStore.hasPermission(permissionMap.category)" />
              <el-checkbox v-model="columns.type.visible" label="类型" :disabled="!userStore.hasPermission(permissionMap.type)" />
              <el-checkbox v-model="columns.spec.visible" label="规格型号" :disabled="!userStore.hasPermission(permissionMap.spec)" />
              <el-checkbox v-model="columns.unit.visible" label="单位" :disabled="!userStore.hasPermission(permissionMap.unit)" />
              <el-checkbox v-model="columns.inventory.visible" label="库存数" :disabled="!userStore.hasPermission(permissionMap.inventory)" />
              <el-checkbox v-model="columns.available.visible" label="可用数" :disabled="!userStore.hasPermission(permissionMap.available)" />
              <el-checkbox v-model="columns.files.visible" label="资料" :disabled="!userStore.hasPermission(permissionMap.files)" />
              <el-checkbox v-model="columns.isEnabled.visible" label="状态" :disabled="!userStore.hasPermission(permissionMap.isEnabled)" />
            </div>
          </el-popover>
        </div>
      </div>

      <el-table
          v-loading="loading"
          :data="tableData"
          border
          stripe
          :size="tableSize"
          style="width: 100%; margin-top: 15px"
      >
        <el-table-column v-if="columns.id.visible" prop="id" label="ID" min-width="80" align="center" fixed="left" />

        <el-table-column v-if="columns.companyName.visible" prop="companyName" label="所属公司" min-width="100" align="center" show-overflow-tooltip>
          <template #default="scope">
            <span>{{ scope.row.companyName || '-' }}</span>
          </template>
        </el-table-column>

        <el-table-column v-if="columns.name.visible" prop="name" label="名称" min-width="160" show-overflow-tooltip />

        <el-table-column v-if="columns.commonName.visible" prop="commonName" label="俗名" min-width="140" show-overflow-tooltip>
          <template #default="scope">
            <span v-if="scope.row.commonName">{{ scope.row.commonName }}</span>
            <span v-else style="color: #ccc;">-</span>
          </template>
        </el-table-column>

        <el-table-column v-if="columns.category.visible" prop="category" label="类别" min-width="140" show-overflow-tooltip>
          <template #default="scope">{{ scope.row.category || '-' }}</template>
        </el-table-column>
        <el-table-column v-if="columns.type.visible" prop="type" label="类型" min-width="120" align="center" show-overflow-tooltip>
          <template #default="scope">{{ scope.row.type || '-' }}</template>
        </el-table-column>
        <el-table-column v-if="columns.spec.visible" prop="spec" label="规格型号" min-width="180" show-overflow-tooltip />
        <el-table-column v-if="columns.unit.visible" prop="unit" label="单位" min-width="80" align="center" />

        <el-table-column v-if="columns.inventory.visible" prop="inventoryCount" label="库存数" min-width="100" align="center">
          <template #default="{ row }">
            <span :style="{ fontWeight: 'bold', color: row.inventoryCount > 0 ? '#67C23A' : '#909399' }">
              {{ row.inventoryCount }}
            </span>
          </template>
        </el-table-column>

        <el-table-column v-if="columns.available.visible" prop="availableCount" label="可用数" min-width="100" align="center">
          <template #default="{ row }">
            <span :style="{ fontWeight: 'bold', color: row.availableCount > 0 ? '#409EFF' : '#909399' }">
              {{ row.availableCount }}
            </span>
          </template>
        </el-table-column>

        <el-table-column v-if="columns.files.visible" label="资料" min-width="140" align="center">
          <template #default="{ row }">
            <div style="display: flex; gap: 8px; justify-content: center;">
              <div v-if="getImagesOnly(row.generalImage).length > 0" class="file-preview-cell">
                <el-image
                    style="width: 32px; height: 32px; border-radius: 4px;"
                    :src="getImageUrl(getImagesOnly(row.generalImage)[0])"
                    :preview-src-list="getImagesOnly(row.generalImage).map(u => getImageUrl(u))"
                    preview-teleported
                    fit="cover"
                />
                <span v-if="getImagesOnly(row.generalImage).length > 1" class="more-badge">+{{getImagesOnly(row.generalImage).length}}</span>
              </div>

              <el-popover v-if="row.generalManual && row.generalManual.length > 0" placement="top" trigger="hover" width="200">
                <template #reference>
                  <el-button link type="primary" :icon="Document" />
                </template>
                <div style="display: flex; flex-direction: column; gap: 5px;">
                  <div v-for="(link, idx) in row.generalManual" :key="idx">
                    <el-link v-if="isExternalLink(link)" :href="link" target="_blank" type="primary" :underline="false">
                      说明书 {{idx+1}} <el-icon><Link /></el-icon>
                    </el-link>
                    <el-image v-else-if="isImageFile(link)"
                              style="width: 100px; height: 100px"
                              :src="getImageUrl(link)"
                              :preview-src-list="[getImageUrl(link)]"
                              fit="cover"
                              preview-teleported
                    />
                    <el-link v-else :href="getImageUrl(link)" target="_blank" type="info">PDF 文件 {{idx+1}}</el-link>
                  </div>
                </div>
              </el-popover>
            </div>
          </template>
        </el-table-column>

        <el-table-column v-if="columns.isEnabled.visible" prop="isEnabled" label="是否启用" min-width="100" align="center">
          <template #default="scope">
            <el-switch
                v-model="scope.row.isEnabled"
                :active-value="1"
                :inactive-value="0"
                :loading="scope.row.statusLoading"
                :disabled="!userStore.hasPermission('material_list:operation')"
                @change="handleStatusChange(scope.row)"
            />
          </template>
        </el-table-column>
        <el-table-column v-if="userStore.hasPermission('material_list:operation')" label="操作" min-width="150" fixed="right" align="center">
          <template #default="scope">
            <el-button v-if="userStore.hasPermission('material_list:operation')" link type="primary" size="small" @click="handleEdit(scope.row)">编辑</el-button>
            <el-button v-if="userStore.hasPermission('material_list:operation')" link type="danger" size="small" @click="handleDelete(scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>

      <div class="pagination-container">
        <el-pagination
            v-model:current-page="queryParams.pageNum"
            v-model:page-size="queryParams.pageSize"
            :page-sizes="[10, 20, 50, 100]"
            :background="true"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total"
            @size-change="handlePageSizeChange"
            @current-change="handlePageCurrentChange"
        />
      </div>

      <el-dialog
          v-model="dialog.visible"
          :title="dialog.title"
          width="700px"
          append-to-body
          @close="cancel"
      >
        <el-form ref="formRef" :model="form" :rules="rules" label-width="110px">

          <el-row>
            <el-col :span="12">
              <el-form-item label="名称" prop="name">
                <el-input v-model="form.name" placeholder="内部名称" />
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item label="俗名" prop="commonName">
                <el-input v-model="form.commonName" placeholder="标准名称" />
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="12">
              <el-form-item label="所属公司" prop="companyName">
                <el-autocomplete
                    v-model="form.companyName"
                    :fetch-suggestions="querySearchCompany"
                    placeholder="请输入公司名称"
                    clearable
                    style="width: 100%"
                />
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item label="类别" prop="category">
                <div style="display: flex; width: 100%; align-items: center;">
                  <el-cascader
                      v-model="tempCategoryPrefix"
                      :options="categoryTreeOptions"
                      :props="{ expandTrigger: 'hover', checkStrictly: true, emitPath: true }"
                      placeholder="选择前缀层级"
                      filterable
                      clearable
                      style="width: 50%;"
                  />
                  <div style="padding: 0 8px; font-weight: bold; color: #909399;">/</div>
                  <el-input
                      v-model="tempCategorySuffix"
                      placeholder="填写具体名称"
                      clearable
                      style="width: 50%;"
                  />
                </div>
                <div style="font-size: 12px; color: #E6A23C; margin-top: 4px; line-height: 1.2;">
                  * 必须构成4层结构
                </div>
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="12">
              <el-form-item label="类型" prop="type">
                <el-autocomplete
                    v-model="form.type"
                    :fetch-suggestions="querySearchType"
                    placeholder="可输入或选择"
                    clearable
                    style="width: 100%"
                />
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item label="规格型号" prop="spec">
                <el-input v-model="form.spec" placeholder="请输入规格型号" />
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="12">
              <el-form-item label="计量单位" prop="unit">
                <el-input v-model="form.unit" placeholder="如: 个, 台, 米" />
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item label="可见等级" prop="visibilityLevel">
                <el-input-number v-model="form.visibilityLevel" :min="0" :max="9" label="等级" />
                <span style="margin-left: 10px; color: #999; font-size: 12px;">(0低-9高)</span>
              </el-form-item>
            </el-col>
          </el-row>

          <el-form-item label="产品图" prop="generalImage">
            <div class="upload-container">
              <el-upload
                  v-model:file-list="fileListImage"
                  action="#"
                  list-type="picture-card"
                  multiple
                  :http-request="(opts) => customUpload(opts, 'generalImage')"
                  :on-preview="handlePreviewPicture"
                  :on-remove="(file) => handleRemoveImage(file, 'generalImage')"
                  :before-upload="beforeAvatarUpload"
              >
                <el-icon><Plus /></el-icon>
              </el-upload>
              <div class="camera-card" @click="triggerCamera('generalImage')">
                <el-icon><Camera /></el-icon><span class="text">拍照</span>
              </div>
            </div>
            <el-input
                v-model="imageExternalUrl"
                placeholder="如有外部图片链接，请在此输入"
                style="margin-top: 8px;"
                clearable
            >
              <template #prefix><el-icon><Link /></el-icon></template>
            </el-input>
          </el-form-item>

          <el-form-item label="说明书" prop="generalManual">
            <div class="upload-container">
              <el-upload
                  v-model:file-list="fileListManual"
                  action="#"
                  list-type="picture-card"
                  multiple
                  :http-request="(opts) => customUpload(opts, 'generalManual')"
                  :on-preview="handlePreviewPicture"
                  :on-remove="(file) => handleRemoveImage(file, 'generalManual')"
                  :before-upload="beforeAvatarUpload"
              >
                <el-icon><Plus /></el-icon>
              </el-upload>
              <div class="camera-card" @click="triggerCamera('generalManual')">
                <el-icon><Camera /></el-icon><span class="text">拍照</span>
              </div>
            </div>
            <el-input
                v-model="manualExternalUrl"
                placeholder="如有外部说明书链接，请在此输入"
                style="margin-top: 8px;"
                clearable
            >
              <template #prefix><el-icon><Link /></el-icon></template>
            </el-input>
          </el-form-item>

          <el-form-item label="状态" prop="isEnabled">
            <el-radio-group v-model="form.isEnabled">
              <el-radio :value="1">启用</el-radio>
              <el-radio :value="0">禁用</el-radio>
            </el-radio-group>
          </el-form-item>
        </el-form>

        <template #footer>
          <div class="dialog-footer">
            <el-button @click="cancel">取 消</el-button>
            <el-button type="primary" @click="submitForm" :loading="submitLoading">确 定</el-button>
          </div>
        </template>
      </el-dialog>

      <el-dialog v-model="dialogVisibleImage" append-to-body width="50%">
        <img style="width: 100%" :src="dialogImageUrl" alt="Preview Image" />
      </el-dialog>
      <el-dialog v-model="cameraDialogVisible" title="拍照上传" width="500px" append-to-body destroy-on-close :close-on-click-modal="false">
        <WebRtcCamera
            ref="cameraRef"
            @photo-submit="handleCameraConfirm"
            @cancel="cameraDialogVisible = false"
        />
      </el-dialog>
    </el-card>
  </div>
</template>

<script setup lang="ts">
import { ref, reactive, onMounted, nextTick } from 'vue';
import { Plus, Document, Refresh, Setting, Rank, Camera, Link, Download } from '@element-plus/icons-vue';
import { ElMessage, ElMessageBox, ElLoading } from 'element-plus';
import type { FormInstance, FormRules } from 'element-plus';
import { useUserStore } from '@/stores/user';

import {
  listMaterialBase,
  addMaterialBase,
  updateMaterialBase,
  delMaterialBase,
  getMaterialBaseOptions,
  exportAssetStatistics // 导入导出API
} from '@/api/material_base';
import { uploadFile, deleteFile } from '@/api/common/upload';
import WebRtcCamera from '@/components/Camera/WebRtcCamera.vue';

const userStore = useUserStore();

// --- 类型定义 ---
interface MaterialBaseVO {
  id: number;
  companyName: string;
  name: string;
  commonName?: string;
  category: string;
  type: string;
  spec: string;
  unit: string;
  visibilityLevel: number;
  generalManual: string[];
  generalImage: string[];
  isEnabled: number;
  statusLoading?: boolean;
  inventoryCount?: number;
  availableCount?: number;
}

interface QueryParams {
  pageNum: number;
  pageSize: number;
  keyword: string;
  category: string;
  type: string;
  company: string;
  isEnabled?: number;
}

interface CascaderOption {
  value: string;
  label: string;
  children?: CascaderOption[];
}

// --- 响应式数据 ---
const loading = ref(false);
const exportLoading = ref(false); // 导出加载状态
const total = ref(0);
const tableData = ref<MaterialBaseVO[]>([]);
const submitLoading = ref(false);
const tableSize = ref<'large' | 'default' | 'small'>('large');

// 文件上传相关
const fileListImage = ref<any[]>([]);
const fileListManual = ref<any[]>([]);
const imageExternalUrl = ref('');
const manualExternalUrl = ref('');
const dialogVisibleImage = ref(false);
const dialogImageUrl = ref('');
const cameraDialogVisible = ref(false);
const cameraRef = ref<InstanceType<typeof WebRtcCamera> | null>(null);
const currentCameraField = ref<'generalImage' | 'generalManual'>('generalImage');

const columns = reactive({
  id: { visible: false },
  companyName: { visible: true },
  name: { visible: true },
  commonName: { visible: true },
  category: { visible: true },
  type: { visible: true },
  spec: { visible: true },
  unit: { visible: true },
  inventory: { visible: true },
  available: { visible: true },
  files: { visible: true },
  isEnabled: { visible: true }
});

// 列与权限Code的映射关系（数据库中的code）
const permissionMap: Record<string, string> = {
  id: 'material_list:id',
  companyName: 'material_list:companyName',
  name: 'material_list:name',
  commonName: 'material_list:commonName',
  category: 'material_list:category',
  type: 'material_list:type',
  spec: 'material_list:spec',
  unit: 'material_list:unit',
  inventory: 'material_list:inventoryCount', // 前端变量是 inventory，数据库Code是 inventoryCount
  available: 'material_list:availableCount', // 前端变量是 available，数据库Code是 availableCount
  files: 'material_list:files',
  isEnabled: 'material_list:isEnabled'
};

// 根据用户权限初始化列显示状态
const initColumnPermissions = () => {
  // 超级管理员跳过权限检查，显示所有列
  if (userStore.role === 'SUPER_ADMIN' || userStore.username === 'IRIS') {
    return;
  }

  // 普通用户：不再根据权限隐藏列，而是显示所有列，由后端控制字段值
  // 所以这里不做任何操作，保持columns的默认visible（true）
  // 但是，我们也可以选择性地根据权限隐藏列，但用户要求列显示，所以不隐藏
  // 因此，注释掉下面的代码
  // Object.keys(columns).forEach(key => {
  //   const code = permissionMap[key];
  //   if (code) {
  //     columns[key].visible = !!userStore.hasPermission(code);
  //   }
  // });
};

const companyOptions = ref<string[]>([]);
const categoryOptions = ref<string[]>([]);
const typeOptions = ref<string[]>([]);
const categoryTreeOptions = ref<CascaderOption[]>([]);

const tempCategoryPrefix = ref<string[]>([]);
const tempCategorySuffix = ref<string>('');

const queryParams = reactive<QueryParams>({
  pageNum: 1,
  pageSize: 100,
  keyword: '',
  category: '',
  type: '',
  company: '',
  isEnabled: undefined
});

// --- 弹窗与表单相关 ---
const dialog = reactive({
  visible: false,
  title: ''
});

const formRef = ref<FormInstance>();

const initForm = {
  id: undefined,
  companyName: '',
  name: '',
  commonName: '',
  category: '',
  type: '',
  spec: '',
  unit: '',
  visibilityLevel: 0,
  generalManual: [] as string[],
  generalImage: [] as string[],
  isEnabled: 1
};

const form = ref({...initForm});

const validateCategoryLevel = (rule: any, value: any, callback: any) => {
  const prefixStr = tempCategoryPrefix.value.join('/');
  const suffixStr = tempCategorySuffix.value.trim();

  if (!prefixStr && !suffixStr) {
    callback(new Error('请填写或选择类别'));
    return;
  }

  let fullPath = '';
  if (prefixStr && suffixStr) fullPath = prefixStr + '/' + suffixStr;
  else if (prefixStr) fullPath = prefixStr;
  else fullPath = suffixStr;

  const levels = fullPath.split('/').filter(p => p.trim() !== '').length;

  if (levels !== 4) {
    callback(new Error(`必须严格满足4层结构，当前为 ${levels} 层`));
  } else {
    callback();
  }
};

const rules = reactive<FormRules>({
  name: [{ required: true, message: '请输入基础信息名称', trigger: 'blur' }],
  companyName: [{ required: true, message: '请输入公司名称', trigger: 'change' }],
  category: [{ required: true, validator: validateCategoryLevel, trigger: 'change' }],
  type: [{ required: true, message: '请选择或输入类型', trigger: 'change' }],
  spec: [{ required: true, message: '请输入规格型号', trigger: 'blur' }],
  unit: [{ required: true, message: '请输入单位', trigger: 'blur' }]
});

// --- 业务逻辑方法 ---

const buildCategoryTree = (categories: string[]): CascaderOption[] => {
  const root: CascaderOption[] = [];
  categories.forEach(cat => {
    if (!cat) return;
    const parts = cat.split('/');
    let currentLevel = root;
    parts.forEach((part, index) => {
      let existingNode = currentLevel.find(n => n.value === part);
      if (!existingNode) {
        existingNode = { value: part, label: part };
        currentLevel.push(existingNode);
      }
      if (index < parts.length - 1) {
        if (!existingNode.children) {
          existingNode.children = [];
        }
        currentLevel = existingNode.children;
      }
    });
  });
  return root;
};

const getOptionsList = () => {
  getMaterialBaseOptions().then((res: any) => {
    if (res.code === 200) {
      categoryOptions.value = res.data.categories || [];
      typeOptions.value = res.data.types || [];
      companyOptions.value = res.data.companies || [];
      categoryTreeOptions.value = buildCategoryTree(categoryOptions.value);
    }
  }).catch(err => {
    console.error("获取筛选项失败", err);
  });
};

const querySearchCompany = (queryString: string, cb: any) => {
  const results = queryString
      ? companyOptions.value.filter(item => item.toLowerCase().includes(queryString.toLowerCase()))
      : companyOptions.value;
  const formattedResults = results.map(item => ({ value: item }));
  cb(formattedResults);
};

const querySearchType = (queryString: string, cb: any) => {
  const results = queryString
      ? typeOptions.value.filter(item => item.toLowerCase().includes(queryString.toLowerCase()))
      : typeOptions.value;
  const formattedResults = results.map(item => ({ value: item }));
  cb(formattedResults);
};

const getList = () => {
  loading.value = true;
  listMaterialBase(queryParams)
      .then((response: any) => {
        if (response && response.data) {
          tableData.value = response.data.items;
          total.value = response.data.total;
        } else {
          tableData.value = [];
          total.value = 0;
        }
      })
      .catch((err) => {
        console.error(err);
        tableData.value = [];
      })
      .finally(() => {
        loading.value = false;
      });
};

// [修改] 导出处理函数：修正文件名格式
const handleExport = () => {
  exportLoading.value = true;
  const params = {
    keyword: queryParams.keyword,
    company: queryParams.company,
    category: queryParams.category,
    type: queryParams.type,
    isEnabled: queryParams.isEnabled
  };

  exportAssetStatistics(params)
      .then((response: any) => {
        const blob = new Blob([response], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' });
        const url = window.URL.createObjectURL(blob);
        const link = document.createElement('a');
        link.href = url;

        // 构造文件名：库存统计_YYYYMMDD_HHMMSS
        const now = new Date();
        const year = now.getFullYear();
        const month = String(now.getMonth() + 1).padStart(2, '0');
        const day = String(now.getDate()).padStart(2, '0');
        const hour = String(now.getHours()).padStart(2, '0');
        const minute = String(now.getMinutes()).padStart(2, '0');
        const second = String(now.getSeconds()).padStart(2, '0');
        const filename = `库存统计_${year}${month}${day}_${hour}${minute}${second}.xlsx`;

        link.setAttribute('download', filename);
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
        window.URL.revokeObjectURL(url);
        ElMessage.success('导出成功');
      })
      .catch((err) => {
        console.error("导出失败", err);
        ElMessage.error('导出失败');
      })
      .finally(() => {
        exportLoading.value = false;
      });
};

let searchTimer: any = null;
const handleInputSearch = () => {
  if (searchTimer) clearTimeout(searchTimer);
  searchTimer = setTimeout(() => {
    queryParams.pageNum = 1;
    getList();
  }, 500);
};

const handleQuery = () => {
  queryParams.pageNum = 1;
  getList();
};

const resetQuery = () => {
  queryParams.keyword = '';
  queryParams.category = '';
  queryParams.type = '';
  queryParams.company = '';
  queryParams.isEnabled = undefined;
  handleQuery();
};

const handleSizeChange = (command: 'large' | 'default' | 'small') => {
  tableSize.value = command;
};

const handlePageSizeChange = (val: number) => {
  queryParams.pageSize = val;
  queryParams.pageNum = 1;
  getList();
};

const handlePageCurrentChange = (val: number) => {
  queryParams.pageNum = val;
  getList();
};

const handleAdd = () => {
  resetForm();
  dialog.title = '新增基础信息';
  dialog.visible = true;
};

const handleEdit = (row: MaterialBaseVO) => {
  resetForm();
  dialog.title = '编辑基础信息';
  dialog.visible = true;

  nextTick(() => {
    const data = JSON.parse(JSON.stringify(row));
    Object.assign(form.value, data);

    if (data.category) {
      const parts = data.category.split('/');
      if (parts.length > 0) {
        tempCategorySuffix.value = parts.pop() || '';
        tempCategoryPrefix.value = parts;
      } else {
        tempCategoryPrefix.value = [];
        tempCategorySuffix.value = data.category;
      }
    } else {
      tempCategoryPrefix.value = [];
      tempCategorySuffix.value = '';
    }

    const images = row.generalImage || [];
    const manuals = row.generalManual || [];

    const imgFiles = images.filter(u => !isExternalLink(u));
    const imgLinks = images.filter(u => isExternalLink(u));
    const manualFiles = manuals.filter(u => !isExternalLink(u));
    const manualLinks = manuals.filter(u => isExternalLink(u));

    fileListImage.value = imgFiles.map(url => ({ name: url.split('/').pop(), url: getImageUrl(url) }));
    imageExternalUrl.value = imgLinks.length > 0 ? imgLinks[0] : '';

    fileListManual.value = manualFiles.map(url => ({ name: url.split('/').pop(), url: getImageUrl(url) }));
    manualExternalUrl.value = manualLinks.length > 0 ? manualLinks[0] : '';
  });
};

const checkDuplicate = async (name: string, spec: string): Promise<boolean> => {
  try {
    const nameRes: any = await listMaterialBase({ pageNum: 1, pageSize: 100, keyword: name, category: '', type: '', company: '' });
    if (nameRes.data?.items?.some((item: MaterialBaseVO) => item.name === name && item.id !== form.value.id)) {
      ElMessage.error(`已存在名称为 "${name}" 的基础信息！`);
      return true;
    }
    const specRes: any = await listMaterialBase({ pageNum: 1, pageSize: 100, keyword: spec, category: '', type: '', company: '' });
    if (specRes.data?.items?.some((item: MaterialBaseVO) => item.spec === spec && item.id !== form.value.id)) {
      ElMessage.error(`已存在规格/编号为 "${spec}" 的基础信息！`);
      return true;
    }
  } catch (e) {
    return false;
  }
  return false;
};

const submitForm = async () => {
  if (!formRef.value) return;

  await formRef.value.validate(async (valid) => {
    if (valid) {
      submitLoading.value = true;
      try {
        const isDuplicate = await checkDuplicate(form.value.name, form.value.spec);
        if (isDuplicate) {
          submitLoading.value = false;
          return;
        }

        const finalImageList = form.value.generalImage.filter(item => !isExternalLink(item));
        if (imageExternalUrl.value) finalImageList.push(imageExternalUrl.value);

        const finalManualList = form.value.generalManual.filter(item => !isExternalLink(item));
        if (manualExternalUrl.value) finalManualList.push(manualExternalUrl.value);

        const prefixStr = tempCategoryPrefix.value.join('/');
        const suffixStr = tempCategorySuffix.value.trim();
        let fullCategory = '';
        if (prefixStr && suffixStr) fullCategory = prefixStr + '/' + suffixStr;
        else fullCategory = prefixStr || suffixStr;

        const payload = {
          ...form.value,
          category: fullCategory,
          generalImage: finalImageList,
          generalManual: finalManualList
        };

        const requestApi = form.value.id ? updateMaterialBase : addMaterialBase;
        const actionText = form.value.id ? '修改' : '新增';
        await requestApi(payload);

        ElMessage.success(`${actionText}成功`);
        dialog.visible = false;
        getList();
        getOptionsList();
      } catch (error: any) {
        ElMessage.error(error.msg || '保存失败');
      } finally {
        submitLoading.value = false;
      }
    }
  });
};

const cancel = () => {
  dialog.visible = false;
  resetForm();
};

const resetForm = () => {
  form.value = JSON.parse(JSON.stringify(initForm));
  fileListImage.value = [];
  fileListManual.value = [];

  tempCategoryPrefix.value = [];
  tempCategorySuffix.value = '';

  imageExternalUrl.value = '';
  manualExternalUrl.value = '';
  if (formRef.value) formRef.value.resetFields();
};

const handleStatusChange = (row: MaterialBaseVO) => {
  row.statusLoading = true;
  const text = row.isEnabled === 1 ? "启用" : "停用";
  const updateData = { id: row.id, isEnabled: row.isEnabled };
  updateMaterialBase(updateData)
      .then(() => ElMessage.success(`已${text} "${row.name}"`))
      .catch(() => { row.isEnabled = row.isEnabled === 1 ? 0 : 1; })
      .finally(() => { row.statusLoading = false; });
};

const handleDelete = (row: MaterialBaseVO) => {
  ElMessageBox.confirm(
      `是否确认删除名称为 "${row.name}" 的数据项?`,
      "警告",
      { confirmButtonText: "确定", cancelButtonText: "取消", type: "warning" }
  ).then(() => {
    delMaterialBase(row.id).then(() => {
      ElMessage.success("删除成功");
      if (tableData.value.length === 1 && queryParams.pageNum > 1) queryParams.pageNum--;
      getList();
      getOptionsList();
    });
  }).catch(() => {});
};

// --- 文件上传辅助函数 ---

const getImageUrl = (url: string) => { return !url ? '' : (url.startsWith('http') ? url : url) }
const isExternalLink = (str: string) => { return str && (str.startsWith('http://') || str.startsWith('https://')) && !str.includes('/api/v1/common/files') }
const getImagesOnly = (list: string[]) => { return !list ? [] : list.filter(item => !isExternalLink(item)) }
const isImageFile = (url: string) => { return /\.(jpg|jpeg|png|gif|webp)$/i.test(url) }

const beforeAvatarUpload = (rawFile: any) => {
  const isTypeValid = ['image/jpeg', 'image/png', 'application/pdf'].includes(rawFile.type);
  if (!isTypeValid) {
    ElMessage.error('仅支持 JPG/PNG/PDF');
    return false;
  }
  if (rawFile.size / 1024 / 1024 > 10) {
    ElMessage.error('文件不能超过 10MB');
    return false;
  }
  return true;
}

const customUpload = async (options: any, targetField: 'generalImage' | 'generalManual') => {
  const { file, onSuccess, onError } = options
  const formData = new FormData()
  formData.append('file', file)
  try {
    const res: any = await uploadFile(formData)
    if (res.code === 200) {
      const newUrl = res.data.url
      form.value[targetField].push(newUrl)
      ElMessage.success('上传成功')
      onSuccess(res)
    } else {
      ElMessage.error(res.msg || '上传失败');
      onError(new Error(res.msg))
    }
  } catch (e) {
    ElMessage.error('网络错误');
    onError(e)
  }
}

const handleRemoveImage = async (uploadFile: any, targetField: 'generalImage' | 'generalManual') => {
  try {
    const urlToRemove = form.value[targetField].find(u => getImageUrl(u) === uploadFile.url) || uploadFile.url
    form.value[targetField] = form.value[targetField].filter(u => u !== urlToRemove)
    if (!isExternalLink(urlToRemove)) {
      const filename = urlToRemove.split('/').pop();
      if (filename) await deleteFile(filename)
    }
    ElMessage.success('已从列表移除')
  } catch (e) { console.error(e) }
}

const handlePreviewPicture = (uploadFile: any) => {
  dialogImageUrl.value = uploadFile.url!;
  dialogVisibleImage.value = true
}

const triggerCamera = (field: 'generalImage' | 'generalManual') => {
  currentCameraField.value = field;
  cameraDialogVisible.value = true;
}

const handleCameraConfirm = async (file: File) => {
  if (!beforeAvatarUpload(file)) {
    cameraDialogVisible.value = false;
    return;
  }
  const formData = new FormData();
  formData.append('file', file);

  const loadingInstance = ElLoading.service({ text: '照片上传中...', background: 'rgba(0, 0, 0, 0.7)' });

  try {
    const res: any = await uploadFile(formData);
    if (res.code === 200) {
      const newUrl = res.data.url;
      const field = currentCameraField.value;
      form.value[field].push(newUrl);

      const fileObj = { name: newUrl.split('/').pop(), url: getImageUrl(newUrl) };
      if (field === 'generalImage') {
        fileListImage.value.push(fileObj);
      } else {
        fileListManual.value.push(fileObj);
      }

      ElMessage.success('拍照上传成功');
      cameraDialogVisible.value = false;
    } else {
      ElMessage.error(res.msg || '上传失败');
    }
  } catch (e) {
    ElMessage.error('上传过程中发生异常');
  } finally {
    loadingInstance.close();
  }
};

onMounted(() => {
  // 先根据权限初始化列显示状态
  initColumnPermissions();
  getList();
  getOptionsList();
});
</script>

<style scoped>
.app-container {
  padding: 20px;
}
.filter-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.filter-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.right-toolbar {
  display: flex;
  align-items: center;
}
.column-setting-list {
  display: flex;
  flex-direction: column;
}

.pagination-container {
  margin-top: 15px;
  display: flex;
  justify-content: flex-start;
}

.upload-container { display: flex; flex-wrap: wrap; gap: 8px; }
:deep(.el-upload--picture-card) { width: 100px; height: 100px; line-height: 100px; }
:deep(.el-upload-list--picture-card .el-upload-list__item) { width: 100px; height: 100px; }
.camera-card { width: 100px; height: 100px; background-color: #fbfdff; border: 1px dashed #c0ccda; border-radius: 6px; box-sizing: border-box; display: flex; flex-direction: column; justify-content: center; align-items: center; cursor: pointer; transition: all 0.3s; color: #8c939d; }
.camera-card:hover { border-color: #409EFF; color: #409EFF; }
.camera-card .text { font-size: 12px; margin-top: 5px; }
.camera-card .el-icon { font-size: 24px; }

.file-preview-cell { display: flex; align-items: center; justify-content: center; position: relative; }
.more-badge { position: absolute; top: -5px; right: -5px; background: #909399; color: #fff; border-radius: 10px; padding: 0 4px; font-size: 10px; transform: scale(0.9); }

</style>

<style>
/* 增加下拉框的最大高度，使其能容纳更多选项而不必频繁滚动 */
.long-dropdown .el-select-dropdown__wrap {
  max-height: 600px !important; /* 可以根据屏幕大小适当调整 */
}
</style>
