import { useState } from 'react';
import type { ChannelInfo, Share } from '@/core-bridge/types';
import { formatAgo, formatRemaining } from '@/lib/format';
import { useChannels } from '@/store/channels';
import { useShares } from '@/store/shares';
import { Button } from '@/ui/Button';
import { Icon } from '@/ui/Icon';
import styles from './ChannelList.module.css';

interface Props {
  kind: 'channel' | 'share';
  title: string;
  onOpen: (c: ChannelInfo | Share) => void;
  /** 标题只给屏幕阅读器(所在分区已有标题) */
  quietTitle?: boolean;
}

export function ChannelList({ kind, title, onOpen, quietTitle = false }: Props) {
  const channels = useChannels((s) => s.list);
  const forgetChannel = useChannels((s) => s.forget);
  const shares = useShares((s) => s.list);
  const forgetShare = useShares((s) => s.forget);
  const list = kind === 'share' ? shares : channels;
  const [confirmId, setConfirmId] = useState<string>();
  if (list.length === 0) return null;

  return (
    <section aria-label={title}>
      <h2 className={`${styles.h} ${quietTitle ? styles.quiet : ''}`}>{title}</h2>
      <ul className={styles.list}>
        {list.map((c) => (
          <li key={c.id} className={styles.row}>
            <button type="button" className={styles.open} onClick={() => onOpen(c)}>
              <span className={styles.id}>{'state' in c ? c.id.slice(0, 8) : c.name || c.id.slice(0, 8)}…</span>
              <span className={styles.meta}>
                {c.dataSource === 'cache' ? <span>离线缓存</span> : null}
                {'state' in c ? (
                  <>
                    <span className={styles.enc}><Icon name="lock" size={12} /> 加密</span>
                    <span className={c.state === 'sealed' ? styles.enc : styles.raw}>{c.state === 'sealed' ? '已封存' : '草稿'}</span>
                    <span>{c.mine ? '我创建的' : '收到的'}</span>
                    <span>{formatRemaining(c.expiresAt)}</span>
                  </>
                ) : (
                  <>
                    {c.name ? <span className={styles.channelId}>{c.id.slice(0, 8)}…</span> : null}
                    <span className={c.mode === 'enc' ? styles.enc : styles.raw}>
                      {c.mode === 'enc' ? <><Icon name="lock" size={12} /> 加密</> : '明文'}
                    </span>
                    <span>{c.role === 'owner' ? '所有者' : '成员'}</span>
                    <span>最多 {c.maxMembers} 人</span>
                    <span>{formatAgo(c.createdAt)}创建</span>
                  </>
                )}
              </span>
            </button>
            {confirmId === c.id ? (
              <span className={styles.confirm}>
                <Button variant="ghost" onClick={() => { (kind === 'share' ? forgetShare : forgetChannel)(c.id); setConfirmId(undefined); }}>确认移除</Button>
                <Button variant="ghost" onClick={() => setConfirmId(undefined)}>取消</Button>
              </span>
            ) : (
              <Button variant="ghost" icon="trash" label="从当前资源清单移除（不会删除服务端内容）" onClick={() => setConfirmId(c.id)} />
            )}
          </li>
        ))}
      </ul>
    </section>
  );
}