{% extends "base.html" %}

{% block title %}{{ page_title }} — HF Daily Papers{% endblock %}

{% block content %}
<article class="paper-detail">
  <a href="/day/{{ paper.paper_date.isoformat() }}" class="back-link">← 返回 {{ paper.paper_date.isoformat() }}</a>

  {# 标题 #}
  <h1 class="detail-title">
    {{ paper.title_zh or paper.title_en }}
    {% if paper.title_zh and paper.title_en != paper.title_zh %}
    <small class="title-en">{{ paper.title_en }}</small>
    {% endif %}
  </h1>

  {# 元信息 #}
  <div class="detail-meta">
    <span class="detail-authors">{{ paper.authors|map(attribute='name')|join(', ') }}</span>
    <span class="detail-date">📅 {{ paper.published_at or paper.paper_date }}</span>
    <span class="detail-upvotes">👍 {{ paper.upvotes }}</span>
  </div>

  {# 标签 #}
  {% if paper.tags %}
  <div class="detail-tags">
    {% for tag in paper.tags %}
    <span class="tag">{{ tag.tag }}</span>
    {% endfor %}
  </div>
  {% endif %}

  {# 链接 #}
  <div class="detail-links">
    {% if paper.arxiv_url %}<a href="{{ paper.arxiv_url }}" target="_blank" class="ext-link">arXiv</a>{% endif %}
    {% if paper.hf_url %}<a href="{{ paper.hf_url }}" target="_blank" class="ext-link">HuggingFace</a>{% endif %}
    {% if paper.pdf_url %}<a href="{{ paper.pdf_url }}" target="_blank" class="ext-link">PDF</a>{% endif %}
  </div>

  {# 总结内容 — 按状态降级 #}
  {% if summary_state == 'done' and paper.summary %}
    {% if paper.summary_status and paper.summary_status.quality == 'low' %}
    <div class="quality-warning">⚠️ AI 总结质量较低，仅供参考</div>
    {% elif paper.summary_status and paper.summary_status.quality == 'degraded' %}
    <div class="quality-warning">📝 总结部分字段不完整</div>
    {% endif %}

    {% if paper.summary.one_line %}
    <section class="summary-section">
      <h2>一句话摘要</h2>
      <p class="one-line">{{ paper.summary.one_line }}</p>
    </section>
    {% endif %}

    {% if paper.summary.difficulty %}
    <section class="summary-section">
      <h2>难度</h2>
      <p>{{ paper.summary.difficulty }}</p>
    </section>
    {% endif %}

    {% if paper.summary.motivation_problem %}
    <section class="summary-section">
      <h2>研究动机</h2>
      {% if paper.summary.motivation_problem %}<p><strong>问题：</strong>{{ paper.summary.motivation_problem }}</p>{% endif %}
      {% if paper.summary.motivation_goal %}<p><strong>目标：</strong>{{ paper.summary.motivation_goal }}</p>{% endif %}
      {% if paper.summary.motivation_gap %}<p><strong>差距：</strong>{{ paper.summary.motivation_gap }}</p>{% endif %}
    </section>
    {% endif %}

    {% if paper.summary.method_key_idea %}
    <section class="summary-section">
      <h2>核心方法</h2>
      {% if paper.summary.method_overview %}<p>{{ paper.summary.method_overview }}</p>{% endif %}
      <p><strong>关键思路：</strong>{{ paper.summary.method_key_idea }}</p>
      {% if paper.summary.method_novelty %}<p><strong>新颖性：</strong>{{ paper.summary.method_novelty }}</p>{% endif %}
    </section>
    {% endif %}

    {% if paper.summary.results_main_json %}
    <section class="summary-section">
      <h2>实验结果</h2>
      <p>{{ paper.summary.results_main_json }}</p>
    </section>
    {% endif %}

    {% if paper.summary.limitations_json %}
    <section class="summary-section">
      <h2>局限与改进</h2>
      <p>{{ paper.summary.limitations_json }}</p>
    </section>
    {% endif %}

  {% elif summary_state == 'processing' %}
    <div class="summary-placeholder processing">
      <p>🔄 正在生成 AI 总结，请稍后刷新页面</p>
    </div>

  {% elif summary_state in ('failed', 'permanent_failure') %}
    <div class="summary-placeholder failed">
      <p>❌ 总结生成失败{% if paper.summary_status and paper.summary_status.error_type %}（{{ paper.summary_status.error_type }}）{% endif %}</p>
      {% if paper.summary_status and paper.summary_status.error %}
      <p class="error-detail">{{ paper.summary_status.error }}</p>
      {% endif %}
    </div>

  {% else %}
    <div class="summary-placeholder none">
      <p>📝 AI 总结尚未生成</p>
    </div>
  {% endif %}

  {# 英文摘要 — 始终显示 #}
  {% if paper.abstract %}
  <section class="summary-section abstract-section">
    <h2>Abstract</h2>
    <p class="abstract-en">{{ paper.abstract }}</p>
  </section>
  {% endif %}

  {# Phase 5: 图片画廊 #}
  {% if paper_images %}
  <section class="image-gallery">
    <h2>论文图片</h2>
    <div class="gallery-grid">
      {% for img in paper_images %}
      <div class="gallery-item">
        <img src="{{ img.url }}" alt="{{ img.name }}" loading="lazy">
        <div class="gallery-caption">{{ img.name }}</div>
      </div>
      {% endfor %}
    </div>
  </section>
  {% endif %}

  {# Phase 5: 相似论文推荐 #}
  {% if similar_papers %}
  <section class="similar-papers">
    <h2>相似论文推荐</h2>
    {% for sp in similar_papers %}
    <div class="similar-paper-item">
      <span class="similar-paper-title">
        <a href="/paper/{{ sp.arxiv_id }}">{{ sp.title_zh }}</a>
      </span>
      <span class="similar-paper-dist">🎯 {{ "%.3f"|format(sp.distance) }}</span>
    </div>
    {% endfor %}
  </section>
  {% endif %}
</article>
{% endblock %}