{% extends "site/base.html" %}
{% block page_title %}资料库 - ARIFU 艾瑞浮{% endblock %}

{% block body %}
<!-- Hero -->
<section style="padding-top:96px;padding-bottom:40px;background:linear-gradient(135deg,#0066CC,#0088DD);text-align:center;color:#fff;">
  <div class="container">
    <h1 style="font-size:clamp(22px,4vw,32px);font-weight:800;margin-bottom:10px;">📚 技术资料库</h1>
    <p style="opacity:.85;max-width:480px;margin:0 auto;">产品手册、技术白皮书、检测报告、操作指南——注册客户可免费下载</p>
  </div>
</section>

<section class="section-sm">
  <div class="container">
    <!-- 筛选 -->
    <div style="display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px;align-items:center;">
      <span style="font-size:14px;font-weight:600;color:var(--dark);">分类：</span>
      <button class="btn btn-sm {{ 'btn-primary' if not cat_id else 'btn-gray' }}" onclick="filterCat('')">全部</button>
      {% for c in categories %}
      <button class="btn btn-sm {{ 'btn-primary' if cat_id==c.id else 'btn-gray' }}" onclick="filterCat('{{ c.id }}')">{{ c.icon }} {{ c.name }}</button>
      {% endfor %}
      <input type="text" id="searchRes" class="form-control" placeholder="🔍 搜索资料…" style="max-width:200px;margin-left:auto;" oninput="searchResources()">
    </div>

    <!-- 登录提示（未登录时显示） -->
    {% if not customer %}
    <div style="background:#fff3cd;border:1px solid #ffc107;border-radius:12px;padding:16px 20px;margin-bottom:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;">
      <span style="font-size:28px;">🔐</span>
      <div style="flex:1;">
        <strong style="font-size:15px;">注册客户专享下载</strong>
        <p style="font-size:13px;color:#856404;margin:2px 0 0;">登录后可下载完整技术资料，未注册？3步完成注册</p>
      </div>
      <a href="/auth/register/" class="btn btn-primary btn-sm">立即注册</a>
      <a href="/auth/login/" class="btn btn-outline btn-sm">已有账号登录</a>
    </div>
    {% endif %}

    <!-- 资料列表 -->
    <div id="resourceGrid" class="card-grid">
      {% for r in resources %}
      <div class="resource-card" data-cat="{{ r.category_id }}" data-title="{{ r.title }} {{ r.description or '' }}">
        <div class="doc-icon">{{ r.category_icon or '📄' }}</div>
        <h4>{{ r.title }}</h4>
        <p>{{ r.description or '暂无简介' }}</p>
        <div class="meta">
          <span>📁 {{ r.category_name or '未分类' }}</span>
          <span>📄 {{ r.doc_type|upper }}</span>
          <span>⬇ {{ r.download_count }}次</span>
        </div>
        {% if customer or r.is_public %}
        <button class="dl-btn" onclick="downloadResource({{ r.id }}, '{{ r.title }}', '{{ r.file_url }}', '{{ r.original_name }}')">
          ⬇ {{ customer and '下载' or '公开资料·下载' }}
        </button>
        {% else %}
        <button class="dl-btn locked" onclick="promptLogin()">🔐 登录后下载</button>
        {% endif %}
      </div>
      {% endfor %}
    </div>

    {% if not resources %}
    <div style="text-align:center;padding:60px;color:var(--muted);">
      <div style="font-size:48px;margin-bottom:12px;">📂</div>
      <p>暂无资料，分类下内容持续更新中</p>
    </div>
    {% endif %}
  </div>
</section>

<!-- 注册 CTA -->
<section class="block-section alt" style="padding:48px 0;">
  <div class="container" style="max-width:600px;text-align:center;">
    <h2 style="margin-bottom:12px;">成为注册客户，获取完整资料</h2>
    <p style="color:var(--muted);margin-bottom:24px;">注册完全免费，审核通过后可下载全部技术资料，并享受专属技术支持</p>
    <div style="display:flex;gap:12px;justify-content:center;flex-wrap:wrap;">
      <a href="/auth/register/" class="btn btn-primary btn-lg">🚀 免费注册</a>
      <a href="/auth/login/" class="btn btn-gray btn-lg">已有账号登录</a>
    </div>
  </div>
</section>

<!-- 登录弹窗 -->
<div class="modal-overlay" id="loginModal">
  <div class="modal" style="max-width:400px;">
    <button class="close" onclick="closeModal('loginModal')">✕</button>
    <h3 style="margin-bottom:20px;">🔐 登录后下载</h3>
    <form id="loginForm">
      <div class="form-group">
        <label>邮箱</label>
        <input type="email" name="email" class="form-control" placeholder="注册邮箱" required>
      </div>
      <div class="form-group">
        <label>密码</label>
        <input type="password" name="password" class="form-control" placeholder="登录密码" required>
      </div>
      <button type="submit" class="btn btn-primary" style="width:100%;">登录并下载</button>
      <div style="text-align:center;margin-top:12px;font-size:13px;">
        还没有账号？<a href="/auth/register/">立即注册 →</a>
      </div>
    </form>
  </div>
</div>
{% endblock %}

{% block scripts %}
<script>
// 分类筛选
function filterCat(id) {
  const cards = document.querySelectorAll('.resource-card');
  cards.forEach(c => {
    c.style.display = !id || c.dataset.cat == id ? '' : 'none';
  });
}

// 搜索
function searchResources() {
  const q = document.getElementById('searchRes').value.toLowerCase();
  document.querySelectorAll('.resource-card').forEach(c => {
    c.style.display = c.dataset.title.toLowerCase().includes(q) ? '' : 'none';
  });
}

// 下载
async function downloadResource(id, title, fileUrl, originalName) {
  // 记录下载
  await fetch(`/api/resources/download/${id}/`, {method:'POST'}).catch(()=>{});
  // 触发下载
  const a = document.createElement('a');
  a.href = fileUrl;
  a.download = originalName;
  a.click();
}

// 提示登录
function promptLogin() {
  openModal('loginModal');
}

// 登录表单
document.getElementById('loginForm').addEventListener('submit', async e => {
  e.preventDefault();
  const fd = new FormData(e.target);
  const res = await fetch('/api/auth/login/', {
    method:'POST', body: fd
  });
  const d = await res.json();
  if (d.ok) {
    location.reload();
  } else {
    alert(d.error || '登录失败');
  }
});
</script>
{% endblock %}