// dashboard/src/components/sync/MetadataSyncCard.tsx

import { SlidersHorizontal, RefreshCw, Loader, Play, Info, CheckCircle, Lightbulb } from 'lucide-react';
import { CustomSelect } from '../CustomSelect';
import type { HarvestStatus } from '../../hooks/useSyncState';

interface MetadataSyncCardProps {
  query: string;
  setQuery: (q: string) => void;
  source: 'all' | 'ads' | 'arxiv';
  setSource: (s: 'all' | 'ads' | 'arxiv') => void;
  limit: number;
  setLimit: (l: number) => void;
  estimating: boolean;
  estimatedCount: number | null;
  status: HarvestStatus;
  showBuilder: boolean;
  setShowBuilder: (show: boolean) => void;
  rules: Array<{ field: string; op: string; val: string }>;
  handleAddRule: () => void;
  handleRemoveRule: (idx: number) => void;
  handleRuleChange: (idx: number, key: 'field' | 'op' | 'val', value: string) => void;
  handleEstimate: () => Promise<void>;
  handleStartHarvest: () => Promise<void>;
}

export function MetadataSyncCard({
  query,
  setQuery,
  source,
  setSource,
  limit,
  setLimit,
  estimating,
  estimatedCount,
  status,
  showBuilder,
  setShowBuilder,
  rules,
  handleAddRule,
  handleRemoveRule,
  handleRuleChange,
  handleEstimate,
  handleStartHarvest,
}: MetadataSyncCardProps) {
  const percent = status.total > 0 ? Math.min(100, Math.round((status.synced / status.total) * 100)) : 0;

  return (
    <div className="space-y-6">
      {/* 控制面板卡片 */}
      <div className="console-panel p-6 rounded-lg space-y-6 relative overflow-hidden bg-white border border-slate-200">
        <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
          <div className="space-y-2">
            <label className="text-xs font-bold text-slate-700 block flex justify-between items-center">
              <span>检索关键词 (Query)</span>
              <button
                type="button"
                onClick={() => setShowBuilder(!showBuilder)}
                className="text-xs text-slate-655 hover:text-slate-850 font-bold flex items-center gap-1 cursor-pointer underline underline-offset-2"
              >
                <SlidersHorizontal className="w-3.5 h-3.5" />
                {showBuilder ? '隐藏高级构造' : '高级检索构造'}
              </button>
            </label>
            <input
              type="text"
              value={query}
              onChange={e => setQuery(e.target.value)}
              disabled={status.active}
              placeholder="例如: hot subdwarf, Gaia BH1..."
              className="w-full px-4 py-2 rounded-md bg-slate-50 border border-slate-300 text-slate-900 placeholder-slate-400 focus:outline-none focus:border-blueprint focus:bg-white transition-all text-xs font-medium"
            />
            <div className="text-[11px] text-slate-450 flex flex-wrap gap-x-2.5 px-0.5 mt-1 select-none">
              <span>高级格式:</span>
              <span><code className="text-slate-700 bg-slate-100 px-1 py-0.2 rounded font-mono">author:"Althaus" AND year:2020-2023</code></span>
            </div>
          </div>

          <div className="space-y-2">
            <label className="text-xs font-bold text-slate-700 block">数据发布平台</label>
            <div className="flex gap-2">
              {[
                { id: 'all', label: '全部' },
                { id: 'ads', label: 'NASA ADS' },
                { id: 'arxiv', label: 'arXiv 预印本' },
              ].map(src => (
                <button
                  key={src.id}
                  type="button"
                  disabled={status.active}
                  onClick={() => setSource(src.id as 'all' | 'ads' | 'arxiv')}
                  className={`flex-1 py-2 rounded-md text-xs font-bold border transition-all cursor-pointer ${
                    source === src.id
                      ? 'bg-slate-100 border-slate-350 text-slate-855 shadow-2xs'
                      : 'btn-console btn-console-secondary'
                  }`}
                >
                  {src.label}
                </button>
              ))}
            </div>
          </div>
        </div>

        {/* 动态表单生成器 */}
        {showBuilder && (
          <div className="p-4 rounded-md bg-slate-50 border border-slate-200 space-y-3.5 transition-all">
            <div className="text-xs font-bold text-slate-700 flex justify-between items-center select-none">
              <span>高级条件生成器</span>
              <button
                type="button"
                onClick={handleAddRule}
                className="text-xs text-slate-655 hover:text-slate-855 font-bold cursor-pointer"
              >
                + 添加条件
              </button>
            </div>

            <div className="space-y-2.5">
              {rules.map((rule, idx) => (
                <div key={idx} className="flex items-center gap-2">
                  {idx > 0 ? (
                    <CustomSelect
                      value={rule.op}
                      onChange={val => handleRuleChange(idx, 'op', val)}
                      className="w-24"
                      options={[
                        { value: 'AND', label: '并且 (AND)' },
                        { value: 'OR', label: '或者 (OR)' },
                        { value: 'NOT', label: '排除 (NOT)' },
                      ]}
                    />
                  ) : (
                    <div className="w-24 text-center text-xs text-slate-500 font-semibold select-none">筛选条件</div>
                  )}

                  <CustomSelect
                    value={rule.field}
                    onChange={val => handleRuleChange(idx, 'field', val)}
                    className="w-32"
                    options={[
                      { value: 'all', label: '任意字段' },
                      { value: 'title', label: '标题' },
                      { value: 'author', label: '作者' },
                      { value: 'abs', label: '摘要' },
                      { value: 'year', label: '年份' },
                    ]}
                  />

                  <input
                    type="text"
                    value={rule.val}
                    onChange={e => handleRuleChange(idx, 'val', e.target.value)}
                    placeholder={
                      rule.field === 'year' 
                        ? '例如: 2020-2023 或 2022' 
                        : rule.field === 'author' 
                          ? '例如: Althaus' 
                          : '请输入检索词...'
                    }
                    className="flex-1 px-3 py-1.5 rounded-md bg-white border border-slate-300 text-slate-900 placeholder-slate-450 focus:outline-none focus:border-blueprint text-xs font-medium"
                  />

                  {rules.length > 1 && (
                    <button
                      type="button"
                      onClick={() => handleRemoveRule(idx)}
                      className="text-slate-500 hover:text-slate-800 text-xs font-bold px-2 py-1.5 cursor-pointer"
                    >
                      删除
                    </button>
                  )}
                </div>
              ))}
            </div>
          </div>
        )}

        <div className="grid grid-cols-1 md:grid-cols-2 gap-6 pt-2 border-t border-slate-200">
          <div className="space-y-2">
            <label className="text-xs font-bold text-slate-700 block flex items-center justify-between">
              <span>单次拉取最大上限</span>
              <span className="text-[11px] text-slate-450 font-normal">防止请求超出频率被封禁 API</span>
            </label>
            <input
              type="number"
              value={limit}
              disabled={status.active}
              onChange={e => setLimit(Math.max(1, parseInt(e.target.value) || 0))}
              className="w-full px-4 py-2 rounded-md bg-slate-50 border border-slate-300 text-slate-900 focus:outline-none focus:border-blueprint transition-all text-xs font-medium"
            />
          </div>

          <div className="flex items-end gap-3">
            <button
              type="button"
              disabled={status.active || estimating}
              onClick={handleEstimate}
              className="flex-1 py-2 rounded-md bg-white border border-slate-300 hover:bg-slate-50 text-slate-750 text-xs font-bold flex items-center justify-center gap-2 transition-all disabled:opacity-40 cursor-pointer"
            >
              {estimating ? <Loader className="w-3.5 h-3.5 animate-spin" /> : <RefreshCw className="w-3.5 h-3.5" />}
              估计目录总量
            </button>
            <button
              type="button"
              disabled={status.active || !query.trim()}
              onClick={handleStartHarvest}
              className="btn-console btn-console-primary flex-1 py-2 rounded-md text-xs font-bold flex items-center justify-center gap-2 disabled:opacity-40 cursor-pointer"
            >
              <Play className="w-3.5 h-3.5" />
              启动元数据同步
            </button>
          </div>
        </div>

        {/* 预估结果 */}
        {estimatedCount !== null && !status.active && (
          <div className="p-4 rounded-md bg-slate-50 border border-slate-200 flex gap-3 text-xs text-slate-800 items-center select-none animate-in fade-in duration-250">
            <Info className="w-4 h-4 shrink-0 text-slate-500" />
            <div>
              检索库中估计有约 <strong className="text-slate-900 font-bold">{estimatedCount}</strong> 篇文献记录。
              {estimatedCount > limit ? ` 限制最大同步前 ${limit} 篇元数据。` : ' 将全部进行同步。'}
            </div>
          </div>
        )}
      </div>

      {/* 实时同步进度 */}
      {(status.active || status.synced > 0) && (
        <div className="console-panel p-6 rounded-lg border border-slate-200 bg-white space-y-4 shadow-sm">
          <div className="flex justify-between items-center">
            <div>
              <h3 className="text-xs font-bold text-slate-850 flex items-center gap-2">
                {status.active ? (
                  <>
                    <Loader className="w-4 h-4 text-blueprint animate-spin" />
                    <span>正在同步学术元数据...</span>
                  </>
                ) : (
                  <>
                    <CheckCircle className="w-4 h-4 text-emerald-700" />
                    <span>元数据目录同步完成</span>
                  </>
                )}
              </h3>
              <p className="text-slate-500 text-[11px] mt-1.5 font-semibold leading-relaxed select-all">
                检索条件: <code className="bg-slate-100 px-1 py-0.5 rounded text-slate-700 font-mono">{status.query}</code> • 平台: {status.source === 'all' ? '全部' : status.source === 'ads' ? 'NASA ADS' : 'arXiv'}
              </p>
            </div>
            <span className="text-xs font-bold text-slate-800">{status.synced} / {status.total} 篇</span>
          </div>

          <div className="w-full h-3 rounded-md bg-slate-100 overflow-hidden border border-slate-200 select-none">
            <div
              className="h-full bg-blueprint transition-all duration-500 shadow-sm"
              style={{ width: `${percent}%` }}
            />
          </div>

          {status.active && (status.source === 'all' || status.source === 'arxiv') ? (
            <div className="p-3 rounded-md bg-slate-50 border border-slate-200 border-l-4 border-l-amber-500 text-xs text-slate-700 flex items-start gap-1.5 select-none">
              <Lightbulb className="w-4 h-4 shrink-0 mt-0.5" />
              <span>同步 arXiv 文献时系统会自动加设 3000 毫秒的安全限流延迟以规避服务器封锁。</span>
            </div>
          ) : null}
        </div>
      )}
    </div>
  );
}