import { CheckCircle2, Copy } from 'lucide-react';
import { useEffect, useMemo, useRef, useState } from 'react';

import { copyTextToClipboard } from '../../services/clipboard';
import { UnifiedModal } from '../common/UnifiedModal';

export type PlatformTaskCompletionDialogPayload = {
  source: string;
  message: string;
};

type PlatformTaskCompletionDialogProps = {
  completion: PlatformTaskCompletionDialogPayload | null;
  onClose: () => void;
  overlayClassName?: string;
  panelClassName?: string;
};

function buildPlatformTaskCompletionReport(
  completion: PlatformTaskCompletionDialogPayload,
) {
  return [`来源：${completion.source}`, `状态：${completion.message}`].join(
    '\n',
  );
}

export function PlatformTaskCompletionDialog({
  completion,
  onClose,
  overlayClassName = 'platform-theme platform-theme--light !items-center',
  panelClassName = 'platform-remap-surface rounded-[1.5rem]',
}: PlatformTaskCompletionDialogProps) {
  const [copyState, setCopyState] = useState<'idle' | 'copied' | 'failed'>(
    'idle',
  );
  const resetTimerRef = useRef<number | null>(null);
  const reportText = useMemo(
    () => (completion ? buildPlatformTaskCompletionReport(completion) : ''),
    [completion],
  );

  useEffect(
    () => () => {
      if (resetTimerRef.current !== null) {
        window.clearTimeout(resetTimerRef.current);
      }
    },
    [],
  );

  useEffect(() => {
    setCopyState('idle');
  }, [completion?.source, completion?.message]);

  const copyCompletion = () => {
    if (!reportText) {
      return;
    }

    void copyTextToClipboard(reportText).then((copied) => {
      setCopyState(copied ? 'copied' : 'failed');
      if (resetTimerRef.current !== null) {
        window.clearTimeout(resetTimerRef.current);
      }
      resetTimerRef.current = window.setTimeout(() => {
        resetTimerRef.current = null;
        setCopyState('idle');
      }, 1400);
    });
  };

  return (
    <UnifiedModal
      open={Boolean(completion)}
      title="生成完成"
      onClose={onClose}
      size="sm"
      overlayClassName={overlayClassName}
      panelClassName={panelClassName}
      bodyClassName="space-y-3 px-4 py-4 sm:px-5 sm:py-5"
      footerClassName="justify-end px-4 py-4 sm:px-5"
      footer={
        <button
          type="button"
          onClick={copyCompletion}
          disabled={!reportText}
          className="platform-button platform-button--primary w-full justify-center gap-2 sm:w-auto"
        >
          {copyState === 'copied' ? (
            <CheckCircle2 className="h-4 w-4" />
          ) : (
            <Copy className="h-4 w-4" />
          )}
          {copyState === 'copied'
            ? '已复制'
            : copyState === 'failed'
              ? '复制失败'
              : '复制内容'}
        </button>
      }
    >
      {completion ? (
        <>
          <div className="rounded-[1rem] border border-[var(--platform-subpanel-border)] bg-white/72 px-3 py-2">
            <div className="text-xs font-bold text-[var(--platform-text-soft)]">
              来源
            </div>
            <div className="mt-1 break-words text-sm font-semibold leading-5 text-[var(--platform-text-strong)]">
              {completion.source}
            </div>
          </div>
          <div className="rounded-[1rem] border border-[var(--platform-subpanel-border)] bg-white/72 px-3 py-2">
            <div className="text-xs font-bold text-[var(--platform-text-soft)]">
              状态
            </div>
            <div className="mt-1 whitespace-pre-wrap break-words text-sm leading-6 text-[var(--platform-text-strong)]">
              {completion.message}
            </div>
          </div>
        </>
      ) : null}
    </UnifiedModal>
  );
}