{% extends 'base.html' %}
{% block title %}添加资源{% endblock %}

{% block breadcrumb %}
<ol class="breadcrumb mb-0">
  <li class="breadcrumb-item"><a href="{{ url_for('resources.list_resources') }}">我的资源</a></li>
  <li class="breadcrumb-item active">添加资源</li>
</ol>
{% endblock %}

{% block content %}
<h4 class="mb-4"><i class="bi bi-plus-circle me-2"></i>添加资源</h4>

<!-- Tab 导航 -->
<ul class="nav nav-tabs mb-4" id="uploadTabs" role="tablist">
  <li class="nav-item">
    <button class="nav-link {{ 'active' if tab == 'upload' }}"
            data-bs-toggle="tab" data-bs-target="#tabUpload" type="button">
      <i class="bi bi-upload me-1"></i>本地上传
    </button>
  </li>
  <li class="nav-item">
    <button class="nav-link {{ 'active' if tab == 'url' }}"
            id="urlTabBtn"
            data-bs-toggle="tab" data-bs-target="#tabUrl" type="button">
      <i class="bi bi-link-45deg me-1"></i>URL 下载
    </button>
  </li>
  <li class="nav-item">
    <button class="nav-link {{ 'active' if tab == 'magnet' }}"
            id="magnetTabBtn"
            data-bs-toggle="tab" data-bs-target="#tabMagnet" type="button">
      <i class="bi bi-magnet me-1"></i>磁力下载
    </button>
  </li>
</ul>

<div class="tab-content">

  <!-- ── 本地上传 ── -->
  <div class="tab-pane fade {{ 'show active' if tab == 'upload' else '' }}" id="tabUpload">
    <div class="row justify-content-center">
      <div class="col-lg-7">
        <div class="card shadow-sm">
          <div class="card-body p-4">
            <form method="POST" action="{{ url_for('resources.upload') }}"
                  enctype="multipart/form-data" novalidate id="uploadForm">
              {{ form.hidden_tag() if tab == 'upload' else '' }}
              {% if tab == 'upload' %}{{ form.hidden_tag() }}{% endif %}
              <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">

              <div class="mb-3">
                <label class="form-label fw-medium">标题 <span class="text-danger">*</span></label>
                <input type="text" name="title" class="form-control" placeholder="资源标题" required
                       {% if tab=='upload' and form.title.data %}value="{{ form.title.data }}"{% endif %}>
              </div>

              <div class="mb-3">
                <label class="form-label fw-medium">选择文件 <span class="text-danger">*</span></label>
                <!-- 拖拽上传区 -->
                <div class="upload-drop-zone" id="dropZone">
                  <i class="bi bi-cloud-arrow-up fs-1 text-muted"></i>
                  <p class="mt-2 mb-1">拖拽文件到此处，或点击选择</p>
                  <p class="text-muted small">支持文本、图片、音频、视频</p>
                  <input type="file" name="file" id="fileInput" class="d-none"
                         accept=".txt,.md,.csv,.json,.xml,.log,.html,.htm,
                                 .jpg,.jpeg,.png,.gif,.webp,.bmp,.svg,
                                 .mp3,.wav,.ogg,.flac,.m4a,.aac,
                                 .mp4,.webm,.avi,.mkv,.mov,.wmv">
                </div>
                <div id="filePreview" class="mt-2 d-none">
                  <div class="d-flex align-items-center gap-2 p-2 border rounded">
                    <i class="bi bi-file-earmark fs-4 text-primary" id="fileIcon"></i>
                    <div class="flex-grow-1 overflow-hidden">
                      <div class="text-truncate fw-medium" id="fileName"></div>
                      <div class="text-muted small" id="fileSize"></div>
                    </div>
                    <button type="button" class="btn btn-sm btn-outline-danger"
                            onclick="clearFile()"><i class="bi bi-x"></i></button>
                  </div>
                </div>
              </div>

              <div class="row g-3 mb-3">
                <div class="col-sm-6">
                  <label class="form-label fw-medium">类型</label>
                  <select name="resource_type" class="form-select">
                    <option value="">— 自动识别 —</option>
                    <option value="text">文本</option>
                    <option value="image">图片</option>
                    <option value="audio">音频</option>
                    <option value="video">视频</option>
                  </select>
                </div>
                <div class="col-sm-6">
                  <label class="form-label fw-medium">标签</label>
                  <input type="text" name="tags" class="form-control"
                         placeholder="用逗号分隔多个标签">
                </div>
              </div>

              <div class="mb-3">
                <label class="form-label fw-medium">保存到文件夹</label>
                <select name="folder_id" class="form-select">
                  {% for value, label in folder_choices %}
                  <option value="{{ value }}">{{ label }}</option>
                  {% endfor %}
                </select>
              </div>

              <div class="mb-4">
                <label class="form-label fw-medium">描述</label>
                <textarea name="description" class="form-control" rows="2"
                          placeholder="可选描述"></textarea>
              </div>

              <!-- 上传进度 -->
              <div id="uploadProgress" class="d-none mb-3">
                <div class="d-flex justify-content-between mb-1">
                  <span class="small">上传中…</span>
                  <span class="small" id="uploadPct">0%</span>
                </div>
                <div class="progress">
                  <div class="progress-bar progress-bar-striped progress-bar-animated"
                       id="uploadBar" style="width:0%"></div>
                </div>
              </div>

              <button type="submit" class="btn btn-primary w-100" id="submitBtn">
                <i class="bi bi-cloud-upload me-1"></i>立即上传
              </button>
            </form>
          </div>
        </div>
      </div>
    </div>
  </div>

  <!-- ── URL 下载 ── -->
  <div class="tab-pane fade {{ 'show active' if tab == 'url' else '' }}" id="tabUrl">
    <div class="row justify-content-center">
      <div class="col-lg-7">
        <div class="card shadow-sm">
          <div class="card-body p-4">
            <div class="alert alert-info small">
              <i class="bi bi-info-circle me-1"></i>
              填写 URL 后，系统将在后台下载文件，可在资源详情页查看进度。
            </div>
            <form method="POST" action="{{ url_for('resources.url_download') }}" novalidate>
              <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">

              <div class="mb-3">
                <label class="form-label fw-medium">标题 <span class="text-danger">*</span></label>
                <input type="text" name="title" class="form-control" placeholder="资源标题" required>
              </div>
              <div class="mb-3">
                <label class="form-label fw-medium">下载 URL <span class="text-danger">*</span></label>
                <input type="url" name="source_url" class="form-control"
                       placeholder="https://example.com/file.mp4" required>
              </div>
              <div class="row g-3 mb-3">
                <div class="col-sm-6">
                  <label class="form-label fw-medium">类型</label>
                  <select name="resource_type" class="form-select">
                    <option value="">— 自动识别 —</option>
                    <option value="text">文本</option>
                    <option value="image">图片</option>
                    <option value="audio">音频</option>
                    <option value="video">视频</option>
                  </select>
                </div>
                <div class="col-sm-6">
                  <label class="form-label fw-medium">标签</label>
                  <input type="text" name="tags" class="form-control" placeholder="逗号分隔">
                </div>
              </div>
              <div class="mb-3">
                <label class="form-label fw-medium">保存到文件夹</label>
                <select name="folder_id" class="form-select">
                  {% for value, label in folder_choices %}
                  <option value="{{ value }}">{{ label }}</option>
                  {% endfor %}
                </select>
              </div>
              <div class="mb-4">
                <label class="form-label fw-medium">描述</label>
                <textarea name="description" class="form-control" rows="2"></textarea>
              </div>
              <button type="submit" class="btn btn-success w-100">
                <i class="bi bi-cloud-download me-1"></i>开始下载
              </button>
            </form>
          </div>
        </div>
      </div>
    </div>
  </div>

  <!-- ── 磁力下载 ── -->
  <div class="tab-pane fade {{ 'show active' if tab == 'magnet' else '' }}" id="tabMagnet">
    <div class="row justify-content-center">
      <div class="col-lg-7">
        <div class="card shadow-sm">
          <div class="card-body p-4">
            <div class="alert alert-warning small">
              <i class="bi bi-exclamation-triangle me-1"></i>
              磁力下载需要服务器安装 <strong>aria2c</strong>。下载任务在后台进行，可在资源详情页查看进度。
            </div>
            <form method="POST" action="{{ url_for('resources.magnet_download') }}" novalidate>
              <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">

              <div class="mb-3">
                <label class="form-label fw-medium">标题 <span class="text-danger">*</span></label>
                <input type="text" name="title" class="form-control" placeholder="资源标题" required>
              </div>
              <div class="mb-3">
                <label class="form-label fw-medium">磁力链接 <span class="text-danger">*</span></label>
                <textarea name="magnet_uri" class="form-control" rows="3"
                          placeholder="magnet:?xt=urn:btih:..." required></textarea>
              </div>
              <div class="row g-3 mb-3">
                <div class="col-sm-6">
                  <label class="form-label fw-medium">类型</label>
                  <select name="resource_type" class="form-select">
                    <option value="video">视频</option>
                    <option value="audio">音频</option>
                    <option value="image">图片</option>
                    <option value="text">文本</option>
                  </select>
                </div>
                <div class="col-sm-6">
                  <label class="form-label fw-medium">标签</label>
                  <input type="text" name="tags" class="form-control" placeholder="逗号分隔">
                </div>
              </div>
              <div class="mb-3">
                <label class="form-label fw-medium">保存到文件夹</label>
                <select name="folder_id" class="form-select">
                  {% for value, label in folder_choices %}
                  <option value="{{ value }}">{{ label }}</option>
                  {% endfor %}
                </select>
              </div>
              <div class="mb-4">
                <label class="form-label fw-medium">描述</label>
                <textarea name="description" class="form-control" rows="2"></textarea>
              </div>
              <button type="submit" class="btn btn-warning w-100">
                <i class="bi bi-magnet me-1"></i>开始磁力下载
              </button>
            </form>
          </div>
        </div>
      </div>
    </div>
  </div>

</div><!-- /tab-content -->
{% endblock %}

{% block scripts %}
<script>
// ── 拖拽上传区 ──────────────────────────────────────────────────────────────
const dropZone = document.getElementById('dropZone');
const fileInput = document.getElementById('fileInput');

if (dropZone && fileInput) {
  dropZone.addEventListener('click', () => fileInput.click());

  ['dragenter','dragover'].forEach(e =>
    dropZone.addEventListener(e, ev => {
      ev.preventDefault();
      dropZone.classList.add('drop-active');
    })
  );
  ['dragleave','drop'].forEach(e =>
    dropZone.addEventListener(e, ev => {
      ev.preventDefault();
      dropZone.classList.remove('drop-active');
    })
  );
  dropZone.addEventListener('drop', ev => {
    const dt = ev.dataTransfer;
    if (dt.files.length) {
      fileInput.files = dt.files;
      showFilePreview(dt.files[0]);
    }
  });
  fileInput.addEventListener('change', () => {
    if (fileInput.files.length) showFilePreview(fileInput.files[0]);
  });
}

function showFilePreview(file) {
  document.getElementById('fileName').textContent = file.name;
  document.getElementById('fileSize').textContent = formatSize(file.size);
  document.getElementById('filePreview').classList.remove('d-none');
  dropZone.classList.add('d-none');
  // 自动填入标题
  const titleInput = document.querySelector('input[name="title"]');
  if (titleInput && !titleInput.value) {
    titleInput.value = file.name.replace(/\.[^.]+$/, '');
  }
}

function clearFile() {
  fileInput.value = '';
  document.getElementById('filePreview').classList.add('d-none');
  dropZone.classList.remove('d-none');
}

function formatSize(bytes) {
  const units = ['B','KB','MB','GB'];
  let i = 0;
  while (bytes >= 1024 && i < units.length - 1) { bytes /= 1024; i++; }
  return `${bytes.toFixed(1)} ${units[i]}`;
}

// ── 上传进度（XHR）────────────────────────────────────────────────────────────
const uploadForm = document.getElementById('uploadForm');
if (uploadForm) {
  uploadForm.addEventListener('submit', function(e) {
    if (!fileInput || !fileInput.files.length) return; // 让浏览器验证
    e.preventDefault();
    const bar = document.getElementById('uploadBar');
    const pct = document.getElementById('uploadPct');
    document.getElementById('uploadProgress').classList.remove('d-none');
    document.getElementById('submitBtn').disabled = true;

    const xhr = new XMLHttpRequest();
    xhr.upload.addEventListener('progress', ev => {
      if (ev.lengthComputable) {
        const p = Math.round(ev.loaded * 100 / ev.total);
        bar.style.width = p + '%';
        pct.textContent = p + '%';
      }
    });
    xhr.addEventListener('load', () => {
      if (xhr.responseURL) window.location.href = xhr.responseURL;
      else location.reload();
    });
    xhr.addEventListener('error', () => {
      alert('上传失败，请重试');
      document.getElementById('submitBtn').disabled = false;
    });
    xhr.open('POST', uploadForm.action);
    xhr.send(new FormData(uploadForm));
  });
}

// ── 激活正确的 Tab ────────────────────────────────────────────────────────────
const activeTab = '{{ tab }}';
if (activeTab === 'url') {
  document.getElementById('urlTabBtn')?.click();
} else if (activeTab === 'magnet') {
  document.getElementById('magnetTabBtn')?.click();
}
</script>
{% endblock %}