'use client';
// TextCandidateCard — 文案候选卡，AI评委7维分 + 总评 + 违禁状态 + 导入角标
import { useState } from 'react';
import { TextCandidate } from '@/types/index';
import { ScoreDimBars } from './ScoreDimBars';
import { clsx } from 'clsx' ;

interface TextCandidateCardProps {
  candidate: TextCandidate;
  selected: boolean;
  onToggle: (id: number) => void;
  onSaveEdit?: (id: number, content: string) => Promise<void>;
}

const BANNED_STATUS_STYLES = {
  pass: null,
  auto_fixed: 'bg-green-50 border-brand-green text-brand-green-dark text-xs px-2 py-0.5 rounded-full',
  soft_warn: 'bg-yellow-50 border-yellow-400 text-yellow-700 text-xs px-2 py-0.5 rounded-full',
  hard_block: 'bg-red-50 border-red-400 text-status-error text-xs px-2 py-0.5 rounded-full',
};

const VERDICT_STYLES: Record<string, string> = {
  '优秀':  'text-status-success font-medium',
  '合格':  'text-text-secondary',
  '不合格':'text-status-error',
};

export function TextCandidateCard({ candidate, selected, onToggle, onSaveEdit }: TextCandidateCardProps) {
  const [expanded, setExpanded] = useState(false);
  const [editing, setEditing] = useState(false);
  const [draft, setDraft] = useState(candidate.content);
  const [saving, setSaving] = useState(false);
  const [justSaved, setJustSaved] = useState(false);

  async function handleSave(e: React.MouseEvent) {
    e.stopPropagation();
    if (!onSaveEdit || saving || draft.trim() === '') return;
    setSaving(true);
    try {
      await onSaveEdit(candidate.candidate_id, draft);
      setEditing(false);
      setJustSaved(true);          // 飞轮节点反馈：改稿=最强信号已喂回
      setTimeout(() => setJustSaved(false), 4000);
    } finally {
      setSaving(false);
    }
  }

  return (
    <article
      onClick={() => onToggle(candidate.candidate_id)}
      aria-selected={selected}
      aria-label={`文案：${candidate.angle_label}，总分${candidate.score.total}，${selected ? '已选中' : '未选中'}`}
      className={clsx(
        'relative border rounded-xl p-4 cursor-pointer transition-all',
        selected
          ? 'border-brand-orange bg-brand-cream shadow-sm'
          : 'border-border-default bg-surface-primary hover:border-brand-orange/50'
      )}
    >
      {/* 角标：导入来源 */}
      {candidate.source === 'import' && (
        <span className="absolute top-2 right-2 text-xs bg-surface-tertiary text-text-secondary px-2 py-0.5 rounded-full">
          导入
        </span>
      )}

      {/* 选中勾 */}
      {selected && (
        <span className="absolute top-2 left-2 w-5 h-5 bg-brand-orange text-white rounded-full flex items-center justify-center text-xs"
          aria-hidden="true">✓</span>
      )}

      <div className="mt-1">
        <span className="text-xs font-medium text-brand-orange mb-1 block">
          {candidate.angle_label}
          {(candidate.edited || justSaved) && (
            <span className="ml-1.5 text-[10px] text-brand-green-dark bg-brand-green-light px-1.5 py-0.5 rounded-full">已改稿</span>
          )}
        </span>
        {editing ? (
          <textarea
            value={draft}
            onChange={(e) => setDraft(e.target.value)}
            onClick={(e) => e.stopPropagation()}
            rows={6}
            className="w-full text-sm border border-brand-orange/50 rounded-lg p-2 focus:outline-none focus:ring-1 focus:ring-brand-orange"
            aria-label="改稿编辑框"
          />
        ) : (
          <>
            <p className={clsx(
              'text-sm text-text-primary whitespace-pre-wrap',
              !expanded && 'line-clamp-4'
            )}>{candidate.content}</p>
            <button
              type="button"
              onClick={(e) => { e.stopPropagation(); setExpanded((v) => !v); }}
              className="mt-1 text-xs text-brand-orange hover:underline"
            >
              {expanded ? '收起' : '展开全文'}
            </button>
          </>
        )}

        {/* D1 改稿入口（飞轮最强信号 text_edit +5） */}
        {onSaveEdit && (
          <div className="mt-2 flex items-center gap-2">
            {editing ? (
              <>
                <button type="button" onClick={handleSave} disabled={saving}
                  className="text-xs bg-brand-orange text-white rounded-md px-2.5 py-1 hover:bg-orange-600 disabled:opacity-50">
                  {saving ? '保存中…' : '保存改稿'}
                </button>
                <button type="button" onClick={(e) => { e.stopPropagation(); setEditing(false); setDraft(candidate.content); }}
                  className="text-xs text-text-secondary hover:underline">取消</button>
              </>
            ) : (
              <button type="button" onClick={(e) => { e.stopPropagation(); setDraft(candidate.content); setEditing(true); }}
                className="text-xs text-brand-orange hover:underline">✎ 改稿</button>
            )}
          </div>
        )}

        {/* 飞轮节点反馈：改稿即时提示已学习 */}
        {justSaved && (
          <p role="status" aria-live="polite" className="mt-1.5 text-[11px] text-brand-green-dark">
            🌿 已学习你的改动，下次会更贴近你的偏好
          </p>
        )}
      </div>

      {/* 违禁词状态 */}
      {candidate.banned_word_status !== 'pass' && (
        <div className="mt-2">
          <span className={BANNED_STATUS_STYLES[candidate.banned_word_status] ?? ''}>
            {candidate.banned_word_status === 'auto_fixed' && '已自动改写'}
            {candidate.banned_word_status === 'soft_warn' && '含敏感词，请检查'}
            {candidate.banned_word_status === 'hard_block' && '含违禁词，已拦截'}
          </span>
        </div>
      )}

      {/* 七维分数条 */}
      <ScoreDimBars score={candidate.score} passLine={85} />

      {/* AI 评委总评（verdict + summary，旧数据空字符串时不渲染）*/}
      {candidate.summary && (
        <p className="mt-2 text-xs text-text-secondary leading-relaxed">
          {candidate.verdict && (
            <span className={clsx('mr-1', VERDICT_STYLES[candidate.verdict] ?? 'text-text-secondary')}>
              [{candidate.verdict}]
            </span>
          )}
          {candidate.summary}
        </p>
      )}
    </article>
  );
}

/** 骨架屏占位 */
export function TextCandidateCardSkeleton() {
  return (
    <div className="border border-border-default rounded-xl p-4 animate-pulse space-y-2" aria-hidden="true">
      <div className="h-3 bg-surface-tertiary rounded w-1/3" />
      <div className="h-4 bg-surface-tertiary rounded w-full" />
      <div className="h-4 bg-surface-tertiary rounded w-5/6" />
      <div className="h-4 bg-surface-tertiary rounded w-4/6" />
      <div className="mt-3 space-y-1">
        {[1, 2, 3].map((i) => (
          <div key={i} className="flex gap-2 items-center">
            <div className="h-2 bg-surface-tertiary rounded w-12" />
            <div className="h-1.5 bg-surface-tertiary rounded flex-1" />
          </div>
        ))}
      </div>
    </div>
  );
}