/**
 * 倉庫對話框元件
 * 重構後：加入驗證邏輯與業務類型支援
 */

import { useEffect, useState } from "react";
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from "@/Components/ui/dialog";
import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from "@/Components/ui/alert-dialog";
import { Input } from "@/Components/ui/input";
import { Label } from "@/Components/ui/label";
import { Textarea } from "@/Components/ui/textarea";
import { Button } from "@/Components/ui/button";
import { Trash2 } from "lucide-react";
import { Warehouse, WarehouseType } from "@/types/warehouse";
import { validateWarehouse } from "@/utils/validation";
import { toast } from "sonner";
import { SearchableSelect } from "@/Components/ui/searchable-select";

interface TransitWarehouseOption {
  id: string;
  name: string;
  license_plate?: string;
  driver_name?: string;
}

interface WarehouseDialogProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
  warehouse: Warehouse | null;
  onSave: (warehouse: Omit<Warehouse, "id" | "createdAt" | "updatedAt">) => void;
  onDelete?: (warehouseId: string) => void;
  transitWarehouses?: TransitWarehouseOption[];
}

const WAREHOUSE_TYPE_OPTIONS: { label: string; value: WarehouseType }[] = [
  { label: "標準倉 (總倉)", value: "standard" },
  { label: "生產倉 (廚房/加工)", value: "production" },
  { label: "門市倉 (前台销售)", value: "retail" },
  { label: "販賣機 (IoT設備)", value: "vending" },
  { label: "在途倉 (物流車)", value: "transit" },
  { label: "瑕疵倉 (報廢/檢驗)", value: "quarantine" },
];

export default function WarehouseDialog({
  open,
  onOpenChange,
  warehouse,
  onSave,
  onDelete,
  transitWarehouses = [],
}: WarehouseDialogProps) {
  const [formData, setFormData] = useState<{
    code: string;
    name: string;
    address: string;
    description: string;
    type: WarehouseType;
    license_plate: string;
    driver_name: string;
    default_transit_warehouse_id: string | null;
  }>({
    code: "",
    name: "",
    address: "",
    description: "",
    type: "standard",
    license_plate: "",
    driver_name: "",
    default_transit_warehouse_id: null,
  });

  const [showDeleteDialog, setShowDeleteDialog] = useState(false);

  useEffect(() => {
    if (warehouse) {
      setFormData({
        code: warehouse.code,
        name: warehouse.name,
        address: warehouse.address || "",
        description: warehouse.description || "",
        type: warehouse.type || "standard",
        license_plate: warehouse.license_plate || "",
        driver_name: warehouse.driver_name || "",
        default_transit_warehouse_id: warehouse.default_transit_warehouse_id ? String(warehouse.default_transit_warehouse_id) : null,
      });
    } else {
      setFormData({
        code: "",
        name: "",
        address: "",
        description: "",
        type: "standard",
        license_plate: "",
        driver_name: "",
        default_transit_warehouse_id: null,
      });
    }
  }, [warehouse, open]);

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();

    const validation = validateWarehouse(formData);
    if (!validation.isValid) {
      toast.error(validation.error);
      return;
    }

    onSave(formData);
  };

  const handleDelete = () => {
    if (warehouse && onDelete) {
      onDelete(warehouse.id);
      setShowDeleteDialog(false);
      onOpenChange(false);
    }
  };

  return (
    <>
      <Dialog open={open} onOpenChange={onOpenChange}>
        <DialogContent className="max-w-2xl max-h-[90vh] overflow-y-auto">
          <DialogHeader>
            <DialogTitle>{warehouse ? "編輯倉庫" : "新增倉庫"}</DialogTitle>
            <DialogDescription>
              {warehouse ? "修改倉庫資訊" : "建立新的倉庫資訊"}
            </DialogDescription>
          </DialogHeader>

          <form onSubmit={handleSubmit}>
            <div className="space-y-6 py-4">
              {/* 區塊 A：基本資訊 */}
              <div className="space-y-4">
                <div className="border-b pb-2">
                  <h4 className="text-sm text-gray-700">基本資訊</h4>
                </div>

                <div className="grid grid-cols-2 gap-4">
                  {/* 倉庫編號 */}
                  <div className="space-y-2">
                    <Label htmlFor="code">
                      倉庫編號 <span className="text-red-500">*</span>
                    </Label>
                    <Input
                      id="code"
                      value={formData.code}
                      onChange={(e) => setFormData({ ...formData, code: e.target.value })}
                      placeholder="請輸入倉庫編號"
                      required
                      className="h-9"
                    />
                  </div>

                  {/* 倉庫類型 */}
                  <div className="space-y-2">
                    <Label>倉庫類型 <span className="text-red-500">*</span></Label>
                    <SearchableSelect
                      value={formData.type}
                      onValueChange={(val) => setFormData({ ...formData, type: val as WarehouseType })}
                      options={WAREHOUSE_TYPE_OPTIONS}
                      placeholder="選擇倉庫類型"
                      className="h-9"
                      showSearch={false}
                    />
                  </div>

                  {/* 倉庫名稱 */}
                  <div className="space-y-2 col-span-2">
                    <Label htmlFor="name">
                      倉庫名稱 <span className="text-red-500">*</span>
                    </Label>
                    <Input
                      id="name"
                      value={formData.name}
                      onChange={(e) => setFormData({ ...formData, name: e.target.value })}
                      placeholder="例：中央倉庫"
                      required
                      className="h-9"
                    />
                  </div>
                </div>
              </div>

              {/* 移動倉專屬資訊 */}
              {formData.type === 'transit' && (
                <div className="space-y-4 bg-yellow-50 p-4 rounded-lg border border-yellow-100">
                  <div className="border-b border-yellow-200 pb-2">
                    <h4 className="text-sm text-yellow-800 font-medium">車輛資訊 (在途倉)</h4>
                  </div>
                  <div className="grid grid-cols-2 gap-4">
                    <div className="space-y-2">
                      <Label htmlFor="license_plate">車牌號碼</Label>
                      <Input
                        id="license_plate"
                        value={formData.license_plate}
                        onChange={(e) => setFormData({ ...formData, license_plate: e.target.value })}
                        placeholder="例：ABC-1234"
                        className="h-9 bg-white"
                      />
                    </div>
                    <div className="space-y-2">
                      <Label htmlFor="driver_name">司機姓名</Label>
                      <Input
                        id="driver_name"
                        value={formData.driver_name}
                        onChange={(e) => setFormData({ ...formData, driver_name: e.target.value })}
                        placeholder="例：王小明"
                        className="h-9 bg-white"
                      />
                    </div>
                  </div>
                </div>
              )}

              {/* 預設在途倉設定（僅非 transit 類型顯示） */}
              {formData.type !== 'transit' && transitWarehouses.length > 0 && (
                <div className="space-y-4 bg-blue-50 p-4 rounded-lg border border-blue-100">
                  <div className="border-b border-blue-200 pb-2">
                    <h4 className="text-sm text-blue-800 font-medium">調撥配送設定</h4>
                  </div>
                  <div className="space-y-2">
                    <Label>預設在途倉</Label>
                    <p className="text-xs text-gray-500">從此倉庫建立調撥單時，系統將自動帶入此在途倉作為配送中繼倉</p>
                    <SearchableSelect
                      value={formData.default_transit_warehouse_id || ""}
                      onValueChange={(val) => setFormData({ ...formData, default_transit_warehouse_id: val || null })}
                      options={[
                        { label: "不指定", value: "" },
                        ...transitWarehouses.map((tw) => ({
                          label: `${tw.name}${tw.license_plate ? ` (${tw.license_plate})` : ''}`,
                          value: tw.id,
                        })),
                      ]}
                      placeholder="選擇預設在途倉"
                      className="h-9 bg-white"
                    />
                  </div>
                </div>
              )}



              {/* 區塊 B：位置 */}
              <div className="space-y-4">
                <div className="border-b pb-2">
                  <h4 className="text-sm text-gray-700">位置與描述</h4>
                </div>

                {/* 倉庫地址 */}
                <div className="space-y-2">
                  <Label htmlFor="address">
                    倉庫地址 <span className="text-red-500">*</span>
                  </Label>
                  <Input
                    id="address"
                    value={formData.address}
                    onChange={(e) => setFormData({ ...formData, address: e.target.value })}
                    placeholder="例：台北市信義區信義路五段7號"
                    required
                    className="h-9"
                  />
                </div>

                {/* 備註說明 */}
                <div className="space-y-2">
                  <Label htmlFor="description">備註說明</Label>
                  <Textarea
                    id="description"
                    value={formData.description}
                    onChange={(e) =>
                      setFormData({ ...formData, description: e.target.value })
                    }
                    placeholder="其他說明"
                    rows={2}
                    className="resize-none"
                  />
                </div>
              </div>
            </div>

            <DialogFooter className="gap-2">
              {warehouse && onDelete && (
                <Button
                  type="button"
                  onClick={() => setShowDeleteDialog(true)}
                  variant="outline"
                  className="mr-auto button-outlined-error"
                >
                  <Trash2 className="mr-2 h-4 w-4" />
                  刪除倉庫
                </Button>
              )}
              <Button
                type="button"
                onClick={() => onOpenChange(false)}
                className="button-outlined-primary"
              >
                取消
              </Button>
              <Button type="submit" className="button-filled-primary">
                {warehouse ? "更新" : "新增"}
              </Button>
            </DialogFooter>
          </form>
        </DialogContent>
      </Dialog >

      {/* 刪除確認對話框 */}
      < AlertDialog open={showDeleteDialog} onOpenChange={setShowDeleteDialog} >
        <AlertDialogContent>
          <AlertDialogHeader>
            <AlertDialogTitle>確認刪除倉庫</AlertDialogTitle>
            <AlertDialogDescription>
              確定要刪除「{warehouse?.name}」嗎？此操作無法復原。
            </AlertDialogDescription>
          </AlertDialogHeader>
          <AlertDialogFooter>
            <AlertDialogCancel>取消</AlertDialogCancel>
            <AlertDialogAction
              onClick={handleDelete}
              className="bg-destructive text-destructive-foreground hover:bg-destructive/90"
            >
              確認刪除
            </AlertDialogAction>
          </AlertDialogFooter>
        </AlertDialogContent>
      </AlertDialog >
    </>
  );
}