import { ChangeDetectionStrategy, Component, input } from '@angular/core';

interface SourceReference { step_id?: string; step_number?: number; call_id?: string; source_id?: string; }
interface RecordedSource {
  id: string; kind: string; label: string; target_id: string; plugin_id: string;
  category: 'interface' | 'auxiliary'; references: SourceReference[]; reference_count: number;
}
interface SourceSummary {
  sources: RecordedSource[]; total_sources: number; sources_omitted: number;
  unattributed_step_count: number; note: string;
}

@Component({
  selector: 'app-evidence-sources', standalone: true,
  changeDetection: ChangeDetectionStrategy.OnPush,
  template: `@if (value(); as summary) {
    <details class="sources" aria-label="证据来源与验收边界">
      <summary>证据来源 · {{ summary.total_sources ? summary.total_sources + ' 个' : '未记录' }}</summary>
      <p>{{ summary.note }}</p>
      @for (source of summary.sources; track source.id) {
        <article>
          <strong>{{ source.category === 'interface' ? '界面来源' : '辅助来源' }} · {{ kind(source.kind) }}</strong>
          <div>{{ source.label || source.target_id }}</div>
          <small>目标 {{ source.target_id }}@if(source.plugin_id) { · 插件 {{ source.plugin_id }} }</small>
          <ul>
            @for (ref of source.references; track $index) {
              <li>步骤 {{ ref.step_number ?? '未记录' }}@if(ref.step_id) { · <code>{{ ref.step_id }}</code> }@if(ref.call_id) { · 调用 <code>{{ ref.call_id }}</code> }</li>
            }
          </ul>
          @if(source.reference_count > source.references.length) { <small>另 {{ source.reference_count - source.references.length }} 条引用见步骤记录。</small> }
        </article>
      }
      @if(summary.sources_omitted) { <p>另 {{ summary.sources_omitted }} 个来源见原始步骤记录。</p> }
      @if(summary.unattributed_step_count) { <p>来源未完整记录的步骤：{{ summary.unattributed_step_count }}；不据此推断执行平台。</p> }
    </details>
  }`,
  styles: [`
    :host { display:block; margin:10px 0; }
    .sources { border:1px solid var(--app-border-control,#cbd5e1); border-radius:8px; padding:10px 12px; background:var(--app-surface,#fff); color:var(--app-text-control,#1e293b); font-size:12px; line-height:1.7; overflow-wrap:anywhere; }
    summary { cursor:pointer; font-weight:600; }
    article { border-top:1px solid var(--app-border-control,#cbd5e1); margin-top:8px; padding-top:8px; }
    p,small { color:var(--app-text-secondary,#475569); }
    ul { padding-left:20px; margin:4px 0; }
    code { font-size:11px; }
  `]
})
export class EvidenceSourcesComponent {
  value = input<SourceSummary | null>(null);
  kind(kind: string): string {
    return ({android:'安卓界面', computer:'电脑界面', api:'接口数据', terminal:'终端', file:'文件', other:'其他'} as Record<string,string>)[kind] || '来源类型未记录';
  }
}