import { createFileRoute } from "@tanstack/react-router";
import { useState } from "react";
import { CommandSubmitTemplate } from "@/template/command-submit-template";
import { CommandRegistryForm, type CommandRegistryFormData } from "@/components/forms/command-registry-form";
import { useQueryData } from "@/hooks/useQueryData";
import { useMutationData } from "@/hooks/useMutationData";
import { API_ENDPOINTS, BASE_URL } from "@/config/api";
import type { ColumnDef } from "@tanstack/react-table";
import { toast } from "sonner";
import { Check, X, Edit2, Trash2 } from "lucide-react";
import { Button } from "@/components/ui/button";
import type { ShellCommandData } from "@/components/forms/command-form";

interface CommandRegistry {
  id: number;
  commandName: string;
  description?: string;
  commandContent: string;
  qoS: 0 | 1 | 2;
  isRetained: boolean;
  createdAt?: string;
  updatedAt?: string;
}

export const Route = createFileRoute("/_authenticated/command/")({
  head: () => ({ meta: [{ title: "Gửi lệnh từ xa" }] }),
  component: CommandPage,
});

function CommandPage() {
  const [isDialogOpen, setIsDialogOpen] = useState(false);
  const [selectedCommand, setSelectedCommand] = useState<CommandRegistry | null>(null);
  const [table, setTable] = useState<any>();

  // Fetch commands
  const { data: commands = [], isLoading } = useQueryData({
    queryKey: ["commands"],
    url: API_ENDPOINTS.COMMAND.GET_COMMANDS,
  });

  // Fetch rooms
  const { data: roomData } = useQueryData({
    queryKey: ["rooms"],
    url: API_ENDPOINTS.DEVICE_COMM.GET_ROOM_LIST,
  });

  const commandList: CommandRegistry[] = Array.isArray(commands) 
    ? commands.map((cmd: any) => ({
        ...cmd,
        qoS: cmd.qoS ?? 0,
        isRetained: cmd.isRetained ?? false,
      }))
    : commands 
      ? [{
          ...commands,
          qoS: commands.qoS ?? 0,
          isRetained: commands.isRetained ?? false,
        }] 
      : [];

  // Add command mutation
  const addCommandMutation = useMutationData<CommandRegistryFormData>({
    url: API_ENDPOINTS.COMMAND.ADD_COMMAND,
    method: "POST",
    invalidate: [["commands"]],
    onSuccess: () => toast.success("Thêm lệnh thành công!"),
    onError: (error) => {
      console.error("Add command error:", error);
      toast.error("Thêm lệnh thất bại!");
    },
  });

  // Update command mutation
  const updateCommandMutation = useMutationData<CommandRegistryFormData>({
    url: "",
    method: "POST",
    invalidate: [["commands"]],
    onSuccess: () => toast.success("Cập nhật lệnh thành công!"),
    onError: (error) => {
      console.error("Update command error:", error);
      toast.error("Cập nhật lệnh thất bại!");
    },
  });

  // Delete command mutation
  const deleteCommandMutation = useMutationData<any>({
    url: "",
    method: "DELETE",
    invalidate: [["commands"]],
    onSuccess: () => toast.success("Xóa lệnh thành công!"),
    onError: (error) => {
      console.error("Delete command error:", error);
      toast.error("Xóa lệnh thất bại!");
    },
  });

  // Execute command mutation
  const executeCommandMutation = useMutationData<{
    commandIds?: number[];
    command?: ShellCommandData;
  }>({
    url: "",
    method: "POST",
    onSuccess: () => toast.success("Gửi yêu cầu thực thi lệnh thành công!"),
    onError: (error) => {
      console.error("Execute command error:", error);
      toast.error("Gửi yêu cầu thực thi thất bại!");
    },
  });

  // Columns for command table
  const columns: ColumnDef<CommandRegistry>[] = [
    {
      accessorKey: "commandName",
      header: "Tên lệnh",
      cell: ({ getValue }) => (
        <span className="font-semibold break-words">{getValue() as string}</span>
      ),
    },
    {
      accessorKey: "description",
      header: "Mô tả",
      cell: ({ getValue }) => (
        <span className="text-sm text-muted-foreground break-words whitespace-normal">
          {(getValue() as string) || "-"}
        </span>
      ),
    },
    {
      accessorKey: "commandContent",
      header: "Nội dung lệnh",
      cell: ({ getValue }) => (
        <code className="text-xs bg-muted/50 p-1 rounded break-words whitespace-normal block">
          {(getValue() as string).substring(0, 100)}...
        </code>
      ),
    },
    {
      accessorKey: "qoS",
      header: "QoS",
      cell: ({ getValue }) => {
        const qos = getValue() as number | undefined;
        const qosValue = qos !== undefined ? qos : 0;
        const colors = {
          0: "text-blue-600",
          1: "text-amber-600",
          2: "text-red-600",
        };
        return (
          <span className={colors[qosValue as 0 | 1 | 2]}>{qosValue}</span>
        );
      },
    },
    {
      accessorKey: "isRetained",
      header: "Lưu trữ",
      cell: ({ getValue }) => {
        const retained = getValue() as boolean;
        return retained ? (
          <div className="flex items-center gap-1">
            <Check className="h-4 w-4 text-green-600" />
            <span className="text-sm text-green-600">Có</span>
          </div>
        ) : (
          <div className="flex items-center gap-1">
            <X className="h-4 w-4 text-gray-400" />
            <span className="text-sm text-gray-400">Không</span>
          </div>
        );
      },
    },
    {
      id: "select",
      header: () => <div className="text-center text-xs">Chọn để thực thi</div>,
      cell: ({ row }) => (
        <input
          type="checkbox"
          checked={row.getIsSelected?.() ?? false}
          onChange={row.getToggleSelectedHandler?.()}
        />
      ),
      enableSorting: false,
      enableHiding: false,
    },
    {
      id: "actions",
      header: () => <div className="text-center text-xs">Hành động</div>,
      cell: ({ row }) => (
        <div className="flex gap-2 justify-center">
          <Button
            size="sm"
            variant="ghost"
            onClick={() => {
              setSelectedCommand(row.original);
              setIsDialogOpen(true);
            }}
          >
            <Edit2 className="h-4 w-4" />
          </Button>
          <Button
            size="sm"
            variant="ghost"
            onClick={() => handleDeleteCommand(row.original.id)}
            disabled={deleteCommandMutation.isPending}
          >
            <Trash2 className="h-4 w-4 text-red-500" />
          </Button>
        </div>
      ),
      enableSorting: false,
      enableHiding: false,
    },
  ];

  // Handle form submit
  const handleFormSubmit = async (data: CommandRegistryFormData) => {
    if (selectedCommand) {
      // Update
      await updateCommandMutation.mutateAsync({
        url: BASE_URL + API_ENDPOINTS.COMMAND.UPDATE_COMMAND(selectedCommand.id),
        data,
      });
    } else {
      // Add
      await addCommandMutation.mutateAsync({
        data,
      });
    }
    setIsDialogOpen(false);
    setSelectedCommand(null);
  };

  // Handle delete
  const handleDeleteCommand = async (commandId: number) => {
    if (!confirm("Bạn có chắc muốn xóa lệnh này?")) return;

    try {
      await deleteCommandMutation.mutateAsync({
        url: API_ENDPOINTS.COMMAND.DELETE_COMMAND(commandId),
        data: null,
      });
    } catch (error) {
      console.error("Delete error:", error);
    }
  };

  // Handle execute commands from list
  const handleExecuteSelected = async (targets: string[]) => {
    if (!table) {
      toast.error("Không thể lấy thông tin bảng!");
      return;
    }

    const selectedRows = table.getSelectedRowModel().rows;
    if (selectedRows.length === 0) {
      toast.error("Vui lòng chọn ít nhất một lệnh để thực thi!");
      return;
    }

    try {
      for (const target of targets) {
        for (const row of selectedRows) {
          // API expects PascalCase directly
          const apiData = {
            Command: row.original.commandContent,
            QoS: row.original.qoS,
            IsRetained: row.original.isRetained,
          };

          console.log("[DEBUG] Sending to:", target, "Data:", apiData);

          await executeCommandMutation.mutateAsync({
            url: API_ENDPOINTS.DEVICE_COMM.SEND_COMMAND(target),
            data: apiData as any,
          });
        }
      }
      toast.success("Đã gửi yêu cầu thực thi lệnh cho các mục đã chọn!");
      if (table) {
        table.setRowSelection({});
      }
    } catch (error) {
      console.error("[DEBUG] Execute error:", error);
      console.error("[DEBUG] Response:", (error as any)?.response?.data);
      toast.error("Có lỗi xảy ra khi thực thi!");
    }
  };

  // Handle execute custom command
  const handleExecuteCustom = async (targets: string[], commandData: ShellCommandData) => {
    try {
      for (const target of targets) {
        // API expects PascalCase directly
        const apiData = {
          Command: commandData.command,
          QoS: commandData.qos,
          IsRetained: commandData.isRetained,
        };

        console.log("[DEBUG] Sending custom to:", target, "Data:", apiData);

        await executeCommandMutation.mutateAsync({
          url: BASE_URL + API_ENDPOINTS.DEVICE_COMM.SEND_COMMAND(target),
          data: apiData as any,
        });
      }
      toast.success("Đã gửi lệnh tùy chỉnh cho các mục đã chọn!");
    } catch (error) {
      console.error("[DEBUG] Execute custom error:", error);
      console.error("[DEBUG] Response:", (error as any)?.response?.data);
      toast.error("Gửi lệnh tùy chỉnh thất bại!");
    }
  };

  return (
    <CommandSubmitTemplate
      title="Gửi lệnh từ xa"
      description="Quản lý và thực thi các lệnh trên thiết bị"
      data={commandList}
      isLoading={isLoading}
      columns={columns}
      dialogOpen={isDialogOpen}
      onDialogOpen={setIsDialogOpen}
      dialogTitle={selectedCommand ? "Sửa Lệnh" : "Thêm Lệnh Mới"}
      onAddNew={() => {
        setSelectedCommand(null);
        setIsDialogOpen(true);
      }}
      onTableInit={setTable}
      formContent={
        <CommandRegistryForm
          onSubmit={handleFormSubmit}
          closeDialog={() => setIsDialogOpen(false)}
          initialData={selectedCommand || undefined}
          title={selectedCommand ? "Sửa Lệnh" : "Thêm Lệnh Mới"}
        />
      }
      onExecuteSelected={handleExecuteSelected}
      onExecuteCustom={handleExecuteCustom}
      isExecuting={executeCommandMutation.isPending}
      rooms={roomData}
    />
  );
}