import dayjs from "dayjs";
import { message } from "@/utils/message";
import { addDialog } from "@/components/ReDialog";
import type { PaginationProps } from "@pureadmin/table";
import { deviceDetection } from "@pureadmin/utils";
import {
  getInventoryList,
  increaseStock,
  adjustStock
} from "@/api/inventory";
import { getProductList } from "@/api/product";
import { getDeviceList } from "@/api/device";
import { type Ref, ref, toRaw, reactive, onMounted } from "vue";
import {
  ElForm,
  ElFormItem,
  ElInput,
  ElInputNumber,
  ElSelect,
  ElOption
} from "element-plus";
import type { InventoryItem, InventorySearchForm, StockInForm, StockAdjustForm } from "./types";

export function useInventory(tableRef: Ref) {
  const form = reactive<InventorySearchForm>({
    deviceId: "",
    productId: "",
    lowStock: false
  });
  const formRef = ref();
  const ruleFormRef = ref();
  const dataList = ref([]);
  const loading = ref(true);
  const deviceOptions = ref([]);
  const productOptions = ref([]);
  const pagination = reactive<PaginationProps>({
    total: 0,
    pageSize: 10,
    currentPage: 1,
    background: true
  });

  const columns: TableColumnList = [
    {
      label: "设备ID",
      prop: "deviceId",
      minWidth: 120
    },
    {
      label: "设备名称",
      prop: "deviceName",
      minWidth: 120
    },
    {
      label: "商品编码",
      prop: "productCode",
      minWidth: 120
    },
    {
      label: "商品名称",
      prop: "productName",
      minWidth: 150
    },
    {
      label: "库存数量",
      prop: "stock",
      minWidth: 100,
      cellRenderer: ({ row }) => (
        <el-tag type={row.stock <= 5 ? "danger" : row.stock <= 10 ? "warning" : "success"}>
          {row.stock}
        </el-tag>
      )
    },
    {
      label: "货架号",
      prop: "shelfNum",
      minWidth: 80
    },
    {
      label: "位置",
      prop: "position",
      minWidth: 80
    },
    {
      label: "更新时间",
      prop: "lastUpdateTime",
      minWidth: 160,
      formatter: ({ lastUpdateTime }) =>
        lastUpdateTime ? dayjs(lastUpdateTime).format("YYYY-MM-DD HH:mm:ss") : "-"
    },
    {
      label: "操作",
      fixed: "right",
      width: 150,
      slot: "operation"
    }
  ];

  // 搜索
  async function onSearch() {
    loading.value = true;
    try {
      const searchParams: any = {
        page: pagination.currentPage,
        pageSize: pagination.pageSize
      };
      
      // 只添加非空的搜索条件
      if (form.deviceId) searchParams.deviceId = form.deviceId;
      if (form.productId) searchParams.productId = form.productId;
      if (form.lowStock) searchParams.lowStock = form.lowStock;
      
      const { data } = await getInventoryList(searchParams);
      if (data) {
        dataList.value = data.list || [];
        pagination.total = Number(data.total) || 0;
      }
    } catch (error) {
      console.error("获取库存列表失败:", error);
    } finally {
      setTimeout(() => {
        loading.value = false;
      }, 300);
    }
  }

  // 重置表单
  const resetForm = formEl => {
    if (!formEl) return;
    formEl.resetFields();
    pagination.currentPage = 1;
    onSearch();
  };

  // 分页
  function handleSizeChange(val: number) {
    pagination.pageSize = val;
    onSearch();
  }

  function handleCurrentChange(val: number) {
    pagination.currentPage = val;
    onSearch();
  }

  // 上货
  const stockInForm = reactive<StockInForm>({
    deviceId: "",
    productId: 0,
    productCode: "",
    productName: "",
    quantity: 1,
    shelfNum: 1,
    position: ""
  });

  function handleStockIn() {
    addDialog({
      title: "上货",
      width: "40%",
      draggable: true,
      fullscreen: deviceDetection(),
      closeOnClickModal: false,
      contentRenderer: () => (
        <ElForm ref={ruleFormRef} model={stockInForm} label-width="100px">
          <ElFormItem label="设备" prop="deviceId" rules={[{ required: true, message: "请选择设备", trigger: "change" }]}>
            <ElSelect v-model={stockInForm.deviceId} placeholder="请选择设备" class="w-full!">
              {deviceOptions.value.map(item => (
                <ElOption key={item.deviceId} label={item.deviceName} value={item.deviceId} />
              ))}
            </ElSelect>
          </ElFormItem>
          <ElFormItem label="商品" prop="productId" rules={[{ required: true, message: "请选择商品", trigger: "change" }]}>
            <ElSelect v-model={stockInForm.productId} placeholder="请选择商品" class="w-full!">
              {productOptions.value.map(item => (
                <ElOption key={item.id} label={item.name} value={item.id} />
              ))}
            </ElSelect>
          </ElFormItem>
          <ElFormItem label="数量" prop="quantity" rules={[{ required: true, message: "请输入数量", trigger: "blur" }]}>
            <ElInputNumber v-model={stockInForm.quantity} min={1} class="w-full!" />
          </ElFormItem>
          <ElFormItem label="货架号" prop="shelfNum">
            <ElInputNumber v-model={stockInForm.shelfNum} min={1} class="w-full!" />
          </ElFormItem>
          <ElFormItem label="位置" prop="position">
            <ElInput v-model={stockInForm.position} placeholder="请输入位置" clearable />
          </ElFormItem>
        </ElForm>
      ),
      beforeSure: async (done) => {
        const valid = await ruleFormRef.value.validate().catch(() => false);
        if (!valid) return;

        try {
          const res = await increaseStock(toRaw(stockInForm));
          if (res.code === 200) {
            message("上货成功", { type: "success" });
            done();
            onSearch();
          } else {
            message(res.message || "上货失败", { type: "error" });
          }
        } catch (error) {
          message("上货失败", { type: "error" });
        }
      }
    });
  }

  // 库存调整
  const adjustForm = reactive<StockAdjustForm>({
    deviceId: "",
    productId: 0,
    newStock: 0,
    remark: ""
  });

  function handleAdjust(row: InventoryItem) {
    adjustForm.deviceId = row.deviceId;
    adjustForm.productId = row.productId;
    adjustForm.newStock = row.stock;
    adjustForm.remark = "";

    addDialog({
      title: "库存调整",
      width: "30%",
      draggable: true,
      fullscreen: deviceDetection(),
      closeOnClickModal: false,
      contentRenderer: () => (
        <ElForm ref={ruleFormRef} model={adjustForm} label-width="100px">
          <ElFormItem label="当前库存">{row.stock}</ElFormItem>
          <ElFormItem label="调整后库存" prop="newStock" rules={[{ required: true, message: "请输入调整后库存", trigger: "blur" }]}>
            <ElInputNumber v-model={adjustForm.newStock} min={0} class="w-full!" />
          </ElFormItem>
          <ElFormItem label="备注" prop="remark">
            <ElInput v-model={adjustForm.remark} type="textarea" placeholder="请输入备注" rows={3} />
          </ElFormItem>
        </ElForm>
      ),
      beforeSure: async (done) => {
        const valid = await ruleFormRef.value.validate().catch(() => false);
        if (!valid) return;

        try {
          const res = await adjustStock(toRaw(adjustForm));
          if (res.code === 200) {
            message("库存调整成功", { type: "success" });
            done();
            onSearch();
          } else {
            message(res.message || "调整失败", { type: "error" });
          }
        } catch (error) {
          message("调整失败", { type: "error" });
        }
      }
    });
  }

  // 获取设备列表
  async function fetchDeviceOptions() {
    try {
      const { data } = await getDeviceList({ page: 1, pageSize: 1000 });
      deviceOptions.value = data.list || [];
    } catch (error) {
      console.error("获取设备列表失败:", error);
    }
  }

  // 获取商品列表
  async function fetchProductOptions() {
    try {
      const { data } = await getProductList({ page: 1, pageSize: 1000 });
      productOptions.value = data.list || [];
    } catch (error) {
      console.error("获取商品列表失败:", error);
    }
  }

  onMounted(async () => {
    await Promise.all([fetchDeviceOptions(), fetchProductOptions()]);
    onSearch();
  });

  return {
    form,
    loading,
    columns,
    dataList,
    pagination,
    deviceOptions,
    productOptions,
    onSearch,
    resetForm,
    handleStockIn,
    handleAdjust,
    handleSizeChange,
    handleCurrentChange
  };
}