import { Card, CardHeader, CardTitle, CardDescription, CardContent } from "@/components/ui/card";
import { Badge } from "@/components/ui/badge";
import type { RoomManagementResponse, RoomHealthStatus } from "@/types/dashboard";
import { ResponsiveContainer, BarChart, Bar, XAxis, YAxis, CartesianGrid, Tooltip } from "recharts";

function statusBadge(status?: string) {
  if (!status) return <Badge>Unknown</Badge>;
  if (status === "InSession") return <Badge className="bg-green-100 text-green-700">Đang sử dụng</Badge>;
  if (status === "NotInUse") return <Badge className="bg-red-100 text-red-700">Không sử dụng</Badge>;
  return <Badge className="bg-yellow-100 text-yellow-700">Có thể có lớp học</Badge>;
}

export function RoomManagementCard({
  data,
  isLoading = false,
}: {
  data?: RoomManagementResponse | null;
  isLoading?: boolean;
}) {
  const chartData = (data?.rooms ?? []).map((r) => ({ room: r.roomName, health: r.healthPercentage ?? 0 }));
  return (
    <Card className="bg-white/80 backdrop-blur border-muted/60 shadow-sm">
      <CardHeader>
        <CardTitle>Quản lý phòng</CardTitle>
        <CardDescription>Thông tin tổng quan và các phòng đang không sử dụng</CardDescription>
      </CardHeader>

      <CardContent>
        <div className="flex items-center justify-between">
          <div>
            <div className="text-xs text-muted-foreground">Tổng phòng</div>
            <div className="text-2xl font-bold">{data?.totalRooms ?? 0}</div>
          </div>
        </div>
        <div className="mt-4">
          <div className="text-sm font-medium mb-2">Tỉ lệ thiết bị online</div>
          <div className="h-48">
            <ResponsiveContainer width="100%" height="100%">
              <BarChart data={chartData} layout="vertical">
                <CartesianGrid strokeDasharray="3 3" />
                <XAxis type="number" domain={[0, 100]} />
                <YAxis dataKey="room" type="category" width={110} />
                <Tooltip />
                <Bar dataKey="health" fill="#0ea5e9" radius={[4, 4, 4, 4]} />
              </BarChart>
            </ResponsiveContainer>
          </div>

          <div className="mt-4">
            <div className="text-sm font-medium">Phòng không dùng</div>
            <div className="mt-2 space-y-2">
              {data?.roomsNeedAttention && data.roomsNeedAttention.length > 0 ? (
                data.roomsNeedAttention.map((r: RoomHealthStatus) => (
                  <div key={r.roomName} className="flex items-center justify-between">
                    <div>
                      <div className="font-medium">{r.roomName}</div>
                      <div className="text-xs text-muted-foreground">{r.totalDevices} thiết bị</div>
                    </div>
                    <div className="flex items-center gap-3">
                      <div className="text-sm font-medium">{r.healthPercentage?.toFixed(1) ?? "-"}%</div>
                      {statusBadge(r.healthStatus)}
                    </div>
                  </div>
                ))
              ) : (
                <div className="text-sm text-muted-foreground">Không có phòng cần chú ý</div>
              )}
            </div>
          </div>
        </div>
      </CardContent>
    </Card>
  );
}