import { memo } from 'react';
import { PieChart, Pie, Cell, Tooltip, Legend, ResponsiveContainer } from 'recharts';
import { EmptyState } from '@/components/ui';
import { CHART_COLORS } from './chartColors';

export interface AlertSlice {
  name: string;
  value: number;
  color: string;
}

interface AlertSeverityDonutProps {
  data: AlertSlice[];
  embed?: boolean;
}

const tooltipStyle = {
  backgroundColor: '#FFFFFF',
  border: `1px solid ${CHART_COLORS.tooltipBorder}`,
  borderRadius: '10px',
  fontSize: '12px',
};

function AlertSeverityDonutComponent({ data, embed }: AlertSeverityDonutProps) {
  const hasData = data.some((d) => d.value > 0);

  const body = (
    <>
      {embed ? (
        <div className="workbench-panel__head">
          <div>
            <h3 className="workbench-panel__title">预警严重度分布</h3>
            <p className="workbench-panel__sub">P1 紧急 / P2 关注</p>
          </div>
        </div>
      ) : (
        <div className="text-[11px] font-medium text-text-secondary uppercase tracking-wide mb-4">
          预警严重度分布
        </div>
      )}
      <div className={embed ? 'workbench-panel__body' : undefined}>
        {hasData ? (
          <div className="flex items-center justify-center">
            <ResponsiveContainer width="100%" height={240}>
              <PieChart>
                <Pie
                  data={data}
                  cx="50%"
                  cy="50%"
                  innerRadius={50}
                  outerRadius={80}
                  paddingAngle={4}
                  dataKey="value"
                  nameKey="name"
                >
                  {data.map((entry) => (
                    <Cell key={entry.name} fill={entry.color} />
                  ))}
                </Pie>
                <Tooltip
                  contentStyle={tooltipStyle}
                  formatter={(value: number, name: string) => [value, name]}
                />
                <Legend
                  wrapperStyle={{ fontSize: '12px' }}
                  formatter={(value: string) => <span className="text-text-primary">{value}</span>}
                />
              </PieChart>
            </ResponsiveContainer>
          </div>
        ) : (
          <EmptyState title="暂无预警数据" />
        )}
      </div>
    </>
  );

  if (embed) return <>{body}</>;
  return <div className="card p-4">{body}</div>;
}

export const AlertSeverityDonut = memo(AlertSeverityDonutComponent);