feat: render preview via Discourse JSON API + custom HTML template
Replace the "goto + JS-hide + wait-networkidle" screenshot path with a
cleaner pipeline that fetches /t/{id}.json through the same StealthySession
(reuses cf_clearance) and then renders a self-contained HTML card via
page.set_content().
Benefits:
- Complete OP content (no truncation, no lazy-loading issues)
- No dependence on Discourse DOM/JS state
- Custom styling adapts to chat-platform preview aspect
- API failure falls back to the existing page-screenshot path
New methods:
- _fetch_topic_data, _safe_title, _extract_content_from_topic_data
- _build_preview_html, _format_count, _normalize_cooked_urls
- _render_html_screenshot
Also localize _conf_schema.json to Chinese and bump version to 1.1.0.
This commit is contained in:
RainySY
@@ -1,26 +1,32 @@
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{
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"cache_ttl": {
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"description": "Screenshot cache TTL (seconds)",
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"description": "截图缓存有效期（秒）",
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"type": "int",
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"default": 1800,
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"hint": "Cached screenshot validity period. Default 1800s (30min). Set to 0 to disable caching."
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"hint": "截图缓存的有效期，默认 1800 秒（30 分钟）。设为 0 禁用缓存。"
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},
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"max_content_length": {
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"description": "Max content preview length (chars)",
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"description": "内容预览最大长度（字符）",
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"type": "int",
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"default": 400,
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"hint": "Maximum characters of text preview extracted from the page."
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"hint": "从页面提取的文字预览最大字符数。"
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},
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"screenshot_timeout": {
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"description": "Screenshot timeout (seconds)",
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"description": "截图超时时间（秒）",
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"type": "int",
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"default": 15,
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"hint": "Max seconds to wait for page screenshot."
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"hint": "等待页面截图的最大秒数。"
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},
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"screenshot_full_page": {
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"description": "Full page screenshot mode",
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"description": "全页截图模式",
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"type": "bool",
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"default": true,
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"hint": "When true (default), captures full page. Set to false for viewport-only preview."
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"hint": "默认开启全页截图，关闭后仅截取视口可见区域。"
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},
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"use_api_render": {
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"description": "使用 API + 自定义 HTML 渲染",
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"type": "bool",
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"default": true,
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"hint": "启用后用 Discourse JSON API 拉数据+自定义 HTML 模板渲染（推荐，完整、干净、不受页面截断/懒加载影响）；关闭则走传统页面截图方案。"
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}
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}
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627
main.py
627
main.py
@@ -133,27 +133,55 @@ class LinuxDoPreviewPlugin(Star):
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and sz > 50 * 1024 # 小于 50KB 的截图视为无效（黑屏/空白）
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)
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use_api_render = self.config.get("use_api_render", True)
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with _StealthySession( # type: ignore[union-attr]
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headless=True, solve_cloudflare=True
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) as session:
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# ── Step 1: fetch 触发 Cloudflare 解决，拿 HTML ──
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resp = session.fetch(url)
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html_str = resp.body.decode("utf-8", errors="replace")
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title = self._extract_title(html_str)
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content = self._extract_content(html_str)
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logger.info(f"[LinuxDoPreview] 标题: {title}")
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# ── Step 2: 新建标签页（复用 cf_clearance）截图 ──
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if not screenshot_is_valid:
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screenshot_path = self._take_screenshot(
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session, url, screenshot_path
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)
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if use_api_render:
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# ── 方案 A：API + 自定义 HTML 渲染（推荐）──
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topic_data = self._fetch_topic_data(session, url)
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title = self._safe_title(topic_data)
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if topic_data:
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content = self._extract_content_from_topic_data(topic_data)
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if not screenshot_is_valid:
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html = self._build_preview_html(topic_data, url)
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if html:
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screenshot_path = self._render_html_screenshot(
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session, html, screenshot_path
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)
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else:
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# API 拉取失败 → 回退原方案
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resp = session.fetch(url)
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html_str = resp.body.decode("utf-8", errors="replace")
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title = self._extract_title(html_str)
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content = self._extract_content(html_str)
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if not screenshot_is_valid:
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screenshot_path = self._take_screenshot(
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session, url, screenshot_path
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)
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else:
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# ── 方案 B：传统页面 + JS 隐藏 ──
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resp = session.fetch(url)
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html_str = resp.body.decode("utf-8", errors="replace")
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title = self._extract_title(html_str)
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content = self._extract_content_from_json(session, url)
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if not content:
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content = self._extract_content(html_str)
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if not screenshot_is_valid:
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screenshot_path = self._take_screenshot(
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session, url, screenshot_path
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)
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if screenshot_is_valid:
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with self._stats_lock:
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self._stats["cache_hit"] += 1
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logger.info(
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f"[LinuxDoPreview] 使用缓存截图: {screenshot_path.name}"
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f"[LinuxDoPreview] 标题: {title}, 内容长度: {len(content)}"
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)
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if screenshot_path:
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logger.info(
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f"[LinuxDoPreview] 使用截图: {screenshot_path.name}"
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)
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summary = self._build_summary(title, content, url)
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return screenshot_path, summary
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@@ -176,7 +204,7 @@ class LinuxDoPreviewPlugin(Star):
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# ── 等待 Discourse 帖子内容渲染 ──
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try:
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page.wait_for_selector(".cooked", timeout=min(timeout_ms, 10000))
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page.wait_for_selector("#post_1", timeout=min(timeout_ms, 10000))
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except Exception:
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page.wait_for_timeout(3000) # 回退：固定等待
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@@ -190,6 +218,7 @@ class LinuxDoPreviewPlugin(Star):
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hide('.sidebar-wrapper'); // 左侧边栏
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hide('.topic-navigation-wrapper'); // 帖子导航条
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hide('.footer-nav.visible'); // 底部导航
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hide('.post-stream'); // 隐藏整个帖子流（后面单独显示楼主）
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// 隐藏所有回复帖子，只保留楼主
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const posts = document.querySelectorAll('.topic-post');
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@@ -201,23 +230,123 @@ class LinuxDoPreviewPlugin(Star):
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# ── 展开 Discourse 截断的长帖 ──
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page.evaluate("""() => {
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document.querySelectorAll('.expand-post').forEach(el => el.remove());
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document.querySelectorAll('.cooked').forEach(el => {
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el.style.maxHeight = 'none';
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el.style.overflow = 'visible';
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// 移除所有展开按钮和截断遮罩
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const removeSelectors = [
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'.expand-post',
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'.gap-bottom',
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'.gap',
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'.large-post-container .show-more',
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'.topic-body .show-more',
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'.cooked .show-more',
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'.lightbox',
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];
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removeSelectors.forEach(sel => {
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document.querySelectorAll(sel).forEach(el => el.remove());
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});
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document.querySelectorAll('.gap-bottom').forEach(el => el.remove());
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document.querySelectorAll('.topic-body').forEach(el => {
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// 移除所有 max-height / overflow 限制
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const unclampSelectors = [
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'.cooked',
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'.topic-body',
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'#post_1 .cooked',
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'#post_1 .topic-body',
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'#post_1 .contents',
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'.large-post-container',
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];
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unclampSelectors.forEach(sel => {
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document.querySelectorAll(sel).forEach(el => {
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el.style.maxHeight = 'none';
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el.style.overflow = 'visible';
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el.style.height = 'auto';
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});
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});
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// 展开 Discourse 长帖截断（data-* 属性方式）
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document.querySelectorAll('[data-expanded]').forEach(el => {
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el.setAttribute('data-expanded', 'true');
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});
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// 移除 truncated 标记
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document.querySelectorAll('.truncated').forEach(el => {
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el.classList.remove('truncated');
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});
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}""")
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# ── 点击可能存在的展开按钮 ──
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try:
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expand_buttons = page.query_selector_all(
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'#post_1 .expand-post, #post_1 .show-more, '
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'#post_1 button[class*="expand"], '
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'#post_1 a[class*="expand"]'
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)
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for btn in expand_buttons:
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try:
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btn.click()
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page.wait_for_timeout(300)
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except Exception:
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pass
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except Exception:
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pass
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# ── 再次展开，防止点击按钮后重新截断 ──
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page.evaluate("""() => {
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['#post_1 .cooked', '#post_1 .topic-body', '#post_1 .contents'].forEach(sel => {
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document.querySelectorAll(sel).forEach(el => {
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el.style.maxHeight = 'none';
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el.style.overflow = 'visible';
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el.style.height = 'auto';
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});
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});
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// 确保图片容器也不截断
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document.querySelectorAll('#post_1 .lightbox-wrapper').forEach(el => {
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el.style.maxHeight = 'none';
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el.style.overflow = 'visible';
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});
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}""")
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# ── 滚动整个页面，触发懒加载图片 ──
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total_height = page.evaluate("document.body.scrollHeight")
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for y in range(0, total_height, 400):
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page.evaluate(f"window.scrollTo(0, {y})")
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page.wait_for_timeout(150)
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# ── 滚动楼主帖子，触发懒加载图片 ──
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post1_box = page.evaluate("""() => {
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const p1 = document.querySelector('#post_1');
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if (!p1) return null;
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const rect = p1.getBoundingClientRect();
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return { top: rect.top + window.scrollY, height: rect.height };
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}""")
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if post1_box:
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post_top = int(post1_box.get('top', 0))
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post_height = int(post1_box.get('height', 0))
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for y in range(post_top, post_top + post_height, 400):
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page.evaluate(f"window.scrollTo(0, {y})")
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page.wait_for_timeout(200)
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else:
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# 回退：滚动整个页面
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total_height = page.evaluate("document.body.scrollHeight")
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for y in range(0, total_height, 400):
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page.evaluate(f"window.scrollTo(0, {y})")
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page.wait_for_timeout(200)
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# ── 等待图片加载完成 ──
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page.evaluate("""() => {
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return new Promise(resolve => {
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const imgs = document.querySelectorAll('#post_1 img');
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let loaded = 0;
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const total = imgs.length;
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if (total === 0) return resolve();
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imgs.forEach(img => {
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if (img.complete) {
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loaded++;
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if (loaded >= total) resolve();
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} else {
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img.onload = img.onerror = () => {
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loaded++;
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if (loaded >= total) resolve();
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};
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}
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});
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// 最多等 3 秒
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setTimeout(resolve, 3000);
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});
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}""")
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# ── 滚动回顶部 ──
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page.evaluate("window.scrollTo(0, 0)")
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page.wait_for_timeout(500)
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@@ -242,6 +371,93 @@ class LinuxDoPreviewPlugin(Star):
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# ─────────── 文本提取 ───────────
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def _extract_content_from_json(self, session, url: str) -> str:
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"""通过 Discourse JSON API 获取完整的楼主帖子内容
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Discourse 的 .json 端点返回结构化数据，包含完整的 cooked HTML，
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不受页面截断、懒加载或 Cloudflare 渲染问题的影响。
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"""
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try:
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# 构造 JSON URL：topic-url.json 或 topic-url/1.json
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json_url = url.rstrip('/')
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if not json_url.endswith('.json'):
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# 对于帖子链接如 /t/topic-slug/12345/5，取前两段
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parts = json_url.split('/')
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# 找到 /t/ 后的部分
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t_idx = -1
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for i, p in enumerate(parts):
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if p == 't':
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t_idx = i
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break
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if t_idx >= 0 and len(parts) > t_idx + 2:
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# 重建为 /t/slug/id 格式
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json_url = '/'.join(parts[:t_idx + 3])
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json_url += '.json'
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logger.info(f"[LinuxDoPreview] JSON API 请求: {json_url}")
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resp = session.fetch(json_url)
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if resp.status != 200:
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logger.info(f"[LinuxDoPreview] JSON API 返回 {resp.status}")
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return ""
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import json
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data = json.loads(resp.body.decode("utf-8", errors="replace"))
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# 从 post_stream 中提取第一个帖子（楼主）
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post_stream = data.get("post_stream", {})
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posts = post_stream.get("posts", [])
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if not posts:
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return ""
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first_post = posts[0]
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cooked_html = first_post.get("cooked", "")
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if not cooked_html:
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return ""
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# 使用 lxml 解析 HTML 并提取纯文本
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if _lh is not None:
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tree = _lh.fromstring(cooked_html)
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return _clean_text(tree.text_content())
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# 回退：正则去标签
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text = re.sub(r"<[^>]+>", " ", cooked_html)
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text = re.sub(r"\s+", " ", text).strip()
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return html_mod.unescape(text)
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except Exception as e:
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logger.info(f"[LinuxDoPreview] JSON API 提取失败: {type(e).__name__}: {e}")
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return ""
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def _fetch_topic_data(self, session, url: str) -> dict | None:
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"""通过 Discourse JSON API 获取完整的主题数据
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返回的 dict 包含帖子原始数据（cooked HTML、作者、标签、统计等），
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可同时供文本提取和自定义 HTML 渲染使用。
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"""
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try:
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json_url = url.rstrip('/')
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if not json_url.endswith('.json'):
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parts = json_url.split('/')
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t_idx = -1
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for i, p in enumerate(parts):
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if p == 't':
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t_idx = i
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break
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if t_idx >= 0 and len(parts) > t_idx + 2:
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json_url = '/'.join(parts[:t_idx + 3])
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json_url += '.json'
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logger.info(f"[LinuxDoPreview] 拉取 topic JSON: {json_url}")
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resp = session.fetch(json_url)
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if resp.status != 200:
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logger.info(f"[LinuxDoPreview] topic JSON 返回 {resp.status}")
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return None
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import json
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return json.loads(resp.body.decode("utf-8", errors="replace"))
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except Exception as e:
|
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logger.info(f"[LinuxDoPreview] topic JSON 拉取失败: {type(e).__name__}: {e}")
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return None
|
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|
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@staticmethod
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def _extract_title(html_str: str) -> str:
|
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m = re.search(r"<title>(.*?)</title>", html_str, re.DOTALL | re.IGNORECASE)
|
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@@ -265,28 +481,47 @@ class LinuxDoPreviewPlugin(Star):
|
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return ""
|
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|
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def _extract_via_lxml(self, html_str: str) -> str:
|
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if _lh is None:
|
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return ""
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tree = _lh.fromstring(html_str)
|
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parts = []
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for el in tree.cssselect(".cooked"):
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text = _clean_text(el.text_content())
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if len(text) > 15:
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parts.append(text)
|
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if len(parts) >= 3:
|
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break
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return "\n\n".join(parts)
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# 使用更精确的选择器：只提取楼主的内容
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# #post_1 是楼主帖子的 ID
|
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post_1 = tree.cssselect("#post_1")
|
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if not post_1:
|
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# 回退：提取第一个 .cooked
|
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for el in tree.cssselect(".cooked"):
|
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text = _clean_text(el.text_content())
|
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if len(text) > 15:
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return text
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return ""
|
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# 提取楼主帖子中的 .cooked 内容
|
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cooked = post_1[0].cssselect(".cooked")
|
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if cooked:
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return _clean_text(cooked[0].text_content())
|
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return ""
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|
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def _extract_via_regex(self, html_str: str) -> str:
|
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parts = []
|
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# 使用更精确的正则表达式：匹配楼主帖子
|
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# 先尝试匹配 #post_1 的帖子
|
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post_1_match = re.search(
|
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r'<article[^>]*id="post_1"[^>]*>.*?<div\s+class="cooked">(.*?)</div>\s*</article>',
|
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html_str,
|
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re.DOTALL
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)
|
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if post_1_match:
|
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text = re.sub(r"<[^>]+>", " ", post_1_match.group(1))
|
||||
text = re.sub(r"\s+", " ", text).strip()
|
||||
if len(text) > 15:
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return text
|
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# 回退：提取第一个 .cooked
|
||||
for m in re.finditer(
|
||||
r'<div\s+class="cooked">(.*?)</div>\s*</article>', html_str, re.DOTALL
|
||||
):
|
||||
text = re.sub(r"<[^>]+>", " ", m.group(1))
|
||||
text = re.sub(r"\s+", " ", text).strip()
|
||||
if len(text) > 15:
|
||||
parts.append(text)
|
||||
if len(parts) >= 3:
|
||||
break
|
||||
return "\n\n".join(parts)
|
||||
return text
|
||||
return ""
|
||||
|
||||
def _build_summary(self, title: str, content: str, url: str) -> str:
|
||||
lines = [f"📌 {title}"]
|
||||
@@ -300,6 +535,322 @@ class LinuxDoPreviewPlugin(Star):
|
||||
lines.append(f"🔗 {url}")
|
||||
return "\n".join(lines)
|
||||
|
||||
@staticmethod
|
||||
def _safe_title(topic_data: dict | None) -> str:
|
||||
"""从 topic JSON 中安全提取标题（剥除尾部 - Linux DO 后缀）"""
|
||||
if not topic_data:
|
||||
return "无标题"
|
||||
title = topic_data.get("title") or topic_data.get("fancy_title") or "无标题"
|
||||
title = re.sub(
|
||||
r"\s*[-–—|]\s*(LINUX\s*DO|LINUXDO).*$", "", title, flags=re.IGNORECASE
|
||||
)
|
||||
return title.strip() or "无标题"
|
||||
|
||||
def _extract_content_from_topic_data(self, topic_data: dict) -> str:
|
||||
"""从已拉取的 topic JSON 中提取楼主帖子纯文本"""
|
||||
try:
|
||||
post_stream = topic_data.get("post_stream", {}) or {}
|
||||
posts = post_stream.get("posts", []) or []
|
||||
if not posts:
|
||||
return ""
|
||||
cooked_html = posts[0].get("cooked", "") or ""
|
||||
if not cooked_html:
|
||||
return ""
|
||||
if _lh is not None:
|
||||
tree = _lh.fromstring(cooked_html)
|
||||
return _clean_text(tree.text_content())
|
||||
text = re.sub(r"<[^>]+>", " ", cooked_html)
|
||||
text = re.sub(r"\s+", " ", text).strip()
|
||||
return html_mod.unescape(text)
|
||||
except Exception as e:
|
||||
logger.info(f"[LinuxDoPreview] topic JSON 文本提取失败: {type(e).__name__}: {e}")
|
||||
return ""
|
||||
|
||||
# ─────────── HTML 预览渲染（API + Scrapling 协作） ───────────
|
||||
|
||||
def _build_preview_html(self, topic_data: dict, url: str) -> str:
|
||||
"""根据 topic JSON 生成自定义预览 HTML
|
||||
|
||||
优点：布局干净、包含完整内容（不受 Discourse 页面截断/懒加载影响）、
|
||||
可控制样式适配聊天平台预览图。
|
||||
"""
|
||||
# 抽取关键字段
|
||||
title = html_mod.escape(topic_data.get("title", "无标题") or "无标题")
|
||||
fancy_title = html_mod.escape(topic_data.get("fancy_title", title) or title)
|
||||
posts_count = topic_data.get("posts_count", 0)
|
||||
views = topic_data.get("views", 0)
|
||||
like_count = topic_data.get("like_count", 0)
|
||||
created_at = topic_data.get("created_at", "")
|
||||
tags = topic_data.get("tags", []) or []
|
||||
|
||||
post_stream = topic_data.get("post_stream", {}) or {}
|
||||
posts = post_stream.get("posts", []) or []
|
||||
if not posts:
|
||||
return ""
|
||||
first = posts[0]
|
||||
author_name = html_mod.escape(first.get("name", "") or first.get("username", "") or "")
|
||||
author_username = html_mod.escape(first.get("username", "") or "")
|
||||
author_avatar = first.get("avatar_template", "") or ""
|
||||
if author_avatar and author_avatar.startswith("/"):
|
||||
author_avatar = "https://linux.do" + author_avatar
|
||||
author_avatar = author_avatar.replace("{size}", "120")
|
||||
post_created = first.get("created_at", "") or ""
|
||||
post_like = first.get("like_count", 0)
|
||||
cooked_html = first.get("cooked", "") or ""
|
||||
|
||||
# 把 Discourse 相对资源 URL 补全为绝对 URL
|
||||
cooked_html = self._normalize_cooked_urls(cooked_html)
|
||||
|
||||
# 发布时间格式化
|
||||
created_text = ""
|
||||
if post_created:
|
||||
try:
|
||||
created_text = post_created.split("T")[0]
|
||||
except Exception:
|
||||
created_text = post_created
|
||||
|
||||
tags_html = "".join(
|
||||
f'<span class="tag">#{html_mod.escape(t["name"] if isinstance(t, dict) else str(t))}</span>'
|
||||
for t in tags[:6]
|
||||
)
|
||||
|
||||
# 头像、统计数字格式化
|
||||
views_text = self._format_count(views)
|
||||
posts_text = self._format_count(posts_count)
|
||||
likes_text = self._format_count(like_count)
|
||||
|
||||
# 完整预览 HTML（含内联 CSS）
|
||||
return f"""<!DOCTYPE html>
|
||||
<html lang="zh-CN">
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<title>{title}</title>
|
||||
<style>
|
||||
* {{ box-sizing: border-box; }}
|
||||
html, body {{ margin: 0; padding: 0; }}
|
||||
body {{
|
||||
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
|
||||
"Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
|
||||
background: #f5f6f8;
|
||||
color: #1c1c1c;
|
||||
padding: 24px;
|
||||
line-height: 1.6;
|
||||
}}
|
||||
.card {{
|
||||
background: #ffffff;
|
||||
border-radius: 12px;
|
||||
box-shadow: 0 2px 8px rgba(0,0,0,0.06);
|
||||
max-width: 760px;
|
||||
margin: 0 auto;
|
||||
overflow: hidden;
|
||||
}}
|
||||
.header {{
|
||||
padding: 20px 24px 16px 24px;
|
||||
border-bottom: 1px solid #eef0f3;
|
||||
}}
|
||||
.title {{
|
||||
font-size: 20px;
|
||||
font-weight: 700;
|
||||
color: #1769c4;
|
||||
margin: 0 0 10px 0;
|
||||
line-height: 1.4;
|
||||
word-break: break-word;
|
||||
}}
|
||||
.meta {{
|
||||
display: flex;
|
||||
align-items: center;
|
||||
gap: 10px;
|
||||
color: #6a737c;
|
||||
font-size: 13px;
|
||||
}}
|
||||
.meta img.avatar {{
|
||||
width: 28px; height: 28px; border-radius: 50%;
|
||||
object-fit: cover; background: #ddd;
|
||||
}}
|
||||
.meta .name {{ color: #1c1c1c; font-weight: 500; }}
|
||||
.stats {{
|
||||
padding: 10px 24px;
|
||||
display: flex;
|
||||
gap: 18px;
|
||||
color: #6a737c;
|
||||
font-size: 13px;
|
||||
border-bottom: 1px solid #eef0f3;
|
||||
background: #fafbfc;
|
||||
}}
|
||||
.stats span::before {{ margin-right: 4px; }}
|
||||
.tags {{
|
||||
padding: 10px 24px 0 24px;
|
||||
display: flex;
|
||||
gap: 6px;
|
||||
flex-wrap: wrap;
|
||||
}}
|
||||
.tag {{
|
||||
background: #e8f0fe;
|
||||
color: #1769c4;
|
||||
padding: 2px 8px;
|
||||
border-radius: 4px;
|
||||
font-size: 12px;
|
||||
}}
|
||||
.content {{
|
||||
padding: 16px 24px 8px 24px;
|
||||
word-break: break-word;
|
||||
}}
|
||||
.content p {{ margin: 0 0 10px 0; }}
|
||||
.content h1, .content h2, .content h3 {{ margin: 16px 0 8px 0; }}
|
||||
.content img {{
|
||||
max-width: 100%;
|
||||
height: auto;
|
||||
border-radius: 6px;
|
||||
display: block;
|
||||
margin: 8px 0;
|
||||
}}
|
||||
.content pre, .content code {{
|
||||
background: #f6f8fa;
|
||||
border-radius: 4px;
|
||||
padding: 2px 6px;
|
||||
font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
|
||||
font-size: 13px;
|
||||
}}
|
||||
.content pre {{ padding: 10px 12px; overflow-x: auto; }}
|
||||
.content blockquote {{
|
||||
border-left: 3px solid #d0d7de;
|
||||
margin: 8px 0;
|
||||
padding: 0 12px;
|
||||
color: #57606a;
|
||||
background: #f6f8fa;
|
||||
}}
|
||||
.content a {{ color: #1769c4; text-decoration: none; }}
|
||||
.content ul, .content ol {{ padding-left: 24px; }}
|
||||
.footer {{
|
||||
padding: 12px 24px 18px 24px;
|
||||
border-top: 1px solid #eef0f3;
|
||||
color: #6a737c;
|
||||
font-size: 12px;
|
||||
word-break: break-all;
|
||||
}}
|
||||
.footer a {{ color: #1769c4; text-decoration: none; }}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="card">
|
||||
<div class="header">
|
||||
<h1 class="title">{fancy_title}</h1>
|
||||
<div class="meta">
|
||||
<img class="avatar" src="{html_mod.escape(author_avatar)}" alt="avatar">
|
||||
<span class="name">{author_name}</span>
|
||||
<span>·</span>
|
||||
<span>{html_mod.escape(created_text)}</span>
|
||||
</div>
|
||||
</div>
|
||||
<div class="stats">
|
||||
<span>👀 {views_text}</span>
|
||||
<span>💬 {posts_text}</span>
|
||||
<span>❤ {likes_text}</span>
|
||||
</div>
|
||||
{('<div class="tags">' + tags_html + '</div>') if tags else ''}
|
||||
<div class="content">
|
||||
{cooked_html}
|
||||
</div>
|
||||
<div class="footer">
|
||||
🔗 <a href="{html_mod.escape(url)}">{html_mod.escape(url)}</a>
|
||||
</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>"""
|
||||
|
||||
@staticmethod
|
||||
def _format_count(n: int) -> str:
|
||||
try:
|
||||
n = int(n)
|
||||
except (TypeError, ValueError):
|
||||
return str(n)
|
||||
if n >= 10000:
|
||||
return f"{n/10000:.1f}w"
|
||||
if n >= 1000:
|
||||
return f"{n/1000:.1f}k"
|
||||
return str(n)
|
||||
|
||||
@staticmethod
|
||||
def _normalize_cooked_urls(cooked_html: str) -> str:
|
||||
"""将 cooked 中的相对资源 URL 转绝对 URL，剥离轻臾框包裹"""
|
||||
if not cooked_html:
|
||||
return ""
|
||||
try:
|
||||
import re as _re
|
||||
# /uploads/... → https://linux.do/uploads/...
|
||||
cooked_html = _re.sub(
|
||||
r'(src|href)="(/uploads/[^"]+)"',
|
||||
r'\1="https://linux.do\2"',
|
||||
cooked_html,
|
||||
)
|
||||
# 去掉 <a class="lightbox"...> 的包裹，但保留 <img>
|
||||
cooked_html = _re.sub(
|
||||
r'<a [^>]*class="lightbox"[^>]*>(.*?)</a>',
|
||||
r'\1',
|
||||
cooked_html,
|
||||
flags=_re.DOTALL,
|
||||
)
|
||||
# 去掉 <div class="lightbox-wrapper"> 包裹
|
||||
cooked_html = _re.sub(
|
||||
r'<div[^>]*class="[^"]*lightbox-wrapper[^"]*"[^>]*>(.*?)</div>',
|
||||
r'\1',
|
||||
cooked_html,
|
||||
flags=_re.DOTALL,
|
||||
)
|
||||
except Exception:
|
||||
pass
|
||||
return cooked_html
|
||||
|
||||
def _render_html_screenshot(self, session, html: str, save_path: Path) -> Path | None:
|
||||
"""在已破解 CF 的浏览器上下文中渲染自定义 HTML 并截图
|
||||
|
||||
page.set_content() 不走网络导航，纯本地渲染：零 Cloudflare、零超时、
|
||||
零依赖 Discourse 页面布局。content-length 限制为实际内容大小。
|
||||
"""
|
||||
timeout_ms = self.config.get("screenshot_timeout", 15) * 1000
|
||||
if not html:
|
||||
return None
|
||||
try:
|
||||
ctx = session.context
|
||||
if not ctx:
|
||||
return None
|
||||
page = ctx.new_page()
|
||||
page.set_viewport_size({"width": 820, "height": 1200})
|
||||
|
||||
# 设置内容，等待图片资源加载
|
||||
page.set_content(html, wait_until="domcontentloaded", timeout=timeout_ms)
|
||||
|
||||
# 主动等所有 <img> 加载完成（最多 3s），避免空白图
|
||||
page.evaluate("""() => new Promise(resolve => {
|
||||
const imgs = document.querySelectorAll('img');
|
||||
if (!imgs.length) return resolve();
|
||||
let done = 0;
|
||||
const tick = () => { if (++done >= imgs.length) resolve(); };
|
||||
imgs.forEach(img => {
|
||||
if (img.complete && img.naturalWidth > 0) tick();
|
||||
else { img.onload = img.onerror = tick; }
|
||||
});
|
||||
setTimeout(resolve, 3000);
|
||||
})""")
|
||||
|
||||
page.wait_for_timeout(300)
|
||||
|
||||
full_page = self.config.get("screenshot_full_page", True)
|
||||
page.screenshot(
|
||||
path=str(save_path),
|
||||
full_page=full_page,
|
||||
timeout=timeout_ms,
|
||||
)
|
||||
sz = save_path.stat().st_size
|
||||
logger.info(
|
||||
f"[LinuxDoPreview] 渲染截图: {save_path.name} ({sz / 1024:.1f} KB)"
|
||||
)
|
||||
page.close()
|
||||
return save_path
|
||||
except Exception as e:
|
||||
logger.warning(f"[LinuxDoPreview] HTML 渲染失败: {type(e).__name__}: {e}")
|
||||
return None
|
||||
|
||||
# ─────────── 管理指令 ───────────
|
||||
|
||||
@filter.command("linuxdo_stats")
|
||||
|
||||
@@ -1,11 +1,13 @@
|
||||
name: astrbot_plugin_linuxdo
|
||||
display_name: LinuxDo Preview
|
||||
short_desc: 自动检测 linux.do 链接，绕过 Cloudflare 截图发送预览
|
||||
short_desc: 自动检测 linux.do 链接，绕过 Cloudflare 渲染预览卡片
|
||||
desc: >
|
||||
自动检测聊天消息中的 linux.do 链接，使用 Scrapling 的 StealthySession
|
||||
绕过 Cloudflare Turnstile 防护，获取页面截图和内容摘要并发送预览。
|
||||
支持缓存避免重复请求，异步非阻塞设计。
|
||||
绕过 Cloudflare Turnstile 防护。可选两种渲染方案：
|
||||
1) 调 Discourse JSON API 拿完整数据，再用自定义 HTML 模板渲染干净预览卡片（推荐，无截断、不依赖 Discourse 页面布局）；
|
||||
2) 传统方案：访问原页 + JS 隐藏非楼主 + 展开截断后截图。
|
||||
支持截图缓存避免重复请求，异步非阻塞设计。
|
||||
author: RainySY
|
||||
version: 1.0.0
|
||||
version: 1.1.0
|
||||
repo: https://github.com/sakuradairong/astrbot_plugin_linuxdo
|
||||
astrbot_version: ">=4.16"
|
||||
|
||||
Reference in New Issue
Block a user