]*>([\s\S]*?)<\/div>/i)?.[1] ?? '',
+ );
+}
+
+export const NEWS_MORNING_COVER_BRAND = Object.freeze({
+ crimson: '#b0191e',
+ navy: '#123a6b',
+});
+
+/** 每日轮换的封面视觉概念；同一自然日固定同一套，避免重复推草稿时风格漂移。 */
+export const NEWS_MORNING_COVER_CONCEPTS = Object.freeze([
+ {
+ id: 'split-skyline',
+ buildScene: () => [
+ 'Cinematic aerial dawn over a modern Asian megacity skyline.',
+ 'Split lighting: warm golden sunrise on one half and cool deep blue shadow on the other, symbolizing contrasting global headlines.',
+ 'Atmospheric haze, subtle lens flare, crimson (#b0191e) and navy (#123a6b) color grading, fine art photography.',
+ ].join(' '),
+ },
+ {
+ id: 'data-nebula',
+ buildScene: () => [
+ 'Abstract 3D editorial art: luminous particle streams and wireframe globe floating in dark space.',
+ 'Crimson and navy gradient nebula, geometric light trails suggesting global news flow.',
+ 'Premium magazine cover aesthetic, cinematic depth of field, glossy render.',
+ ].join(' '),
+ },
+ {
+ id: 'theme-mosaic',
+ buildScene: ({ headlineHints }) => [
+ 'Bold editorial mosaic collage for a morning news digest: stylized vignettes in one square frame',
+ '(financial towers with abstract red-green light bars, ancient artifact silhouette, international color blocks, festival tent silhouette)',
+ 'unified by diagonal crimson-to-navy gradient overlay, modern graphic design, high contrast.',
+ headlineHints ? `Mood cues: ${headlineHints}.` : null,
+ ].filter(Boolean).join(' '),
+ },
+ {
+ id: 'brand-editorial',
+ buildScene: () => [
+ 'Flat modern editorial vector cover: diagonal gradient from crimson (#b0191e) to navy (#123a6b),',
+ 'soft sunrise glow, abstract globe wireframe, notification dots, subtle chart-line motifs, centered negative space.',
+ ].join(' '),
+ },
+ {
+ id: 'morning-window',
+ buildScene: () => [
+ 'Warm morning sunlight streaming through a window onto a minimal interior wall.',
+ 'Soft bokeh garden outside, abstract crimson and navy color blocks on the wall suggesting news tiles,',
+ 'cozy dawn atmosphere, lifestyle photography, shallow depth of field.',
+ ].join(' '),
+ },
+ {
+ id: 'satellite-terminator',
+ buildScene: () => [
+ 'Earth viewed from space at the day-night terminator line, city lights glowing on the dark side,',
+ 'sunrise rim light on clouds, deep navy space background with crimson atmospheric glow,',
+ 'NASA-style cinematic realism, global perspective.',
+ ].join(' '),
+ },
+ {
+ id: 'geometric-pulse',
+ buildScene: () => [
+ 'Minimal geometric editorial cover: layered crimson and navy arcs, pulse waves and dot grids,',
+ 'clean Swiss design, subtle grain texture, strong diagonal composition, premium news brand feel.',
+ ].join(' '),
+ },
+]);
+
+function buildNewsMorningCoverContext(html, { now = Date.now(), timezone = 'Asia/Shanghai' } = {}) {
+ const dateParts = formatLocalDateParts(now, timezone);
+ const dateBadge = stripHtml(
+ String(html).match(/
]*>([\s\S]*?)<\/div>/i)?.[1] ?? '',
+ );
+ const coverMeta = extractMindspaceCoverMeta(html);
+ const subtitle = String(coverMeta?.subtitle ?? extractHeroSubtitle(html) ?? '').trim();
+ const headlineHints = subtitle
+ .split(/[·•]/)
+ .map((item) => item.trim())
+ .filter(Boolean)
+ .slice(0, 3)
+ .join(', ');
+ const dateLabel = dateBadge || `${dateParts.year}-${dateParts.month}-${dateParts.day}`;
+ return { dateParts, dateLabel, headlineHints };
+}
+
+function hashNewsMorningCoverDay(isoDate) {
+ let hash = 0;
+ for (const ch of String(isoDate)) {
+ hash = (hash * 31 + ch.charCodeAt(0)) >>> 0;
+ }
+ return hash;
+}
+
+export function resolveNewsMorningCoverConcept({ now = Date.now(), timezone = 'Asia/Shanghai' } = {}) {
+ const { dateParts } = buildNewsMorningCoverContext('', { now, timezone });
+ const index = hashNewsMorningCoverDay(dateParts.iso) % NEWS_MORNING_COVER_CONCEPTS.length;
+ const concept = NEWS_MORNING_COVER_CONCEPTS[index];
+ return { id: concept.id, index, isoDate: dateParts.iso };
+}
+
+export function buildNewsMorningCoverPrompt(html, { now = Date.now(), timezone = 'Asia/Shanghai' } = {}) {
+ const context = buildNewsMorningCoverContext(html, { now, timezone });
+ const conceptMeta = resolveNewsMorningCoverConcept({ now, timezone });
+ const concept = NEWS_MORNING_COVER_CONCEPTS[conceptMeta.index];
+ return [
+ 'Square WeChat article cover thumbnail for the Chinese morning news digest brand "Daily News Morning Brief".',
+ `Edition date mood: ${context.dateLabel}.`,
+ `Visual concept (${concept.id}): ${concept.buildScene(context)}`,
+ context.headlineHints
+ ? `Only subtle abstract mood hints, do not illustrate news stories literally: ${context.headlineHints}.`
+ : null,
+ 'Must look like a professional daily news briefing product cover, not calligraphy art, not fantasy illustration.',
+ 'No text, no letters, no numbers, no Chinese characters, no calligraphy, no seals, no logos, no watermark, no human faces.',
+ 'No smartphone, no mobile phone, no newspaper, no coffee cup, no office desk still life.',
+ ].filter(Boolean).join(' ');
+}
+
+export function buildNewsMorningCoverNegativePrompt() {
+ return [
+ 'smartphone',
+ 'mobile phone',
+ 'newspaper',
+ 'coffee cup',
+ 'desk still life',
+ 'calligraphy',
+ 'Chinese characters',
+ 'seal stamp',
+ 'anime',
+ 'cartoon child',
+ 'fantasy',
+ 'maple leaves',
+ 'text',
+ 'letters',
+ 'watermark',
+ 'logo',
+ ].join(', ');
+}
+
+function resolveGeneratedAssetPath(h5Root, userId, workspaceRelativePath) {
+ return path.join(h5Root, PUBLISH_ROOT_DIR, userId, workspaceRelativePath);
+}
+
+async function resolveNewsMorningDraftThumbBuffer({
+ page,
+ html,
+ config,
+ h5Root,
+ imageGenerationService,
+ logger = console,
+ now = Date.now(),
+}) {
+ const thumbPath = page?.localPath
+ ? `${page.localPath.replace(/\.html$/i, '')}.thumbnail.png`
+ : null;
+
+ if (imageGenerationService?.generate && config.sourceUserId && page?.slug) {
+ try {
+ const prompt = buildNewsMorningCoverPrompt(html, { now, timezone: config.timezone });
+ const negativePrompt = buildNewsMorningCoverNegativePrompt();
+ const result = await imageGenerationService.generate({
+ userId: config.sourceUserId,
+ purpose: 'inline_image',
+ prompt,
+ negativePrompt,
+ consumerRef: `wechat-news-morning:${page.slug}:cover`,
+ idempotencyKey: `wechat-news-morning-${page.slug}-cover-v3`,
+ });
+ if (result?.ok && result?.asset?.workspaceRelativePath) {
+ const assetPath = resolveGeneratedAssetPath(
+ h5Root,
+ config.sourceUserId,
+ result.asset.workspaceRelativePath,
+ );
+ if (fs.existsSync(assetPath)) {
+ const raw = fs.readFileSync(assetPath);
+ const square = await sharp(raw, { sequentialRead: true })
+ .rotate()
+ .resize(900, 900, { fit: 'cover' })
+ .png()
+ .toBuffer();
+ if (thumbPath) {
+ fs.mkdirSync(path.dirname(thumbPath), { recursive: true });
+ fs.writeFileSync(thumbPath, square);
+ }
+ return { buffer: square, source: 'generated', prompt, assetPath };
+ }
+ }
+ logger.warn?.('[NewsMorningDraft] cover generation returned without asset file', {
+ code: result?.code ?? null,
+ slug: page.slug,
+ });
+ } catch (error) {
+ logger.warn?.(
+ '[NewsMorningDraft] cover generation failed:',
+ error instanceof Error ? error.message : error,
+ );
+ }
+ }
+
+ if (page?.thumbPath && fs.existsSync(page.thumbPath)) {
+ return { buffer: fs.readFileSync(page.thumbPath), source: 'sidecar' };
+ }
+
+ const fallback = await sharp(
+ Buffer.from(
+ '',
+ ),
+ ).png().toBuffer();
+ return { buffer: fallback, source: 'fallback' };
+}
+
export function buildNewsMorningAutoGenerationTask(config, { now = Date.now(), searchBrief = '' } = {}) {
const timezone = String(config?.timezone ?? 'Asia/Shanghai').trim() || 'Asia/Shanghai';
const dateLabel = formatLocalDateParts(now, timezone);
@@ -278,7 +508,9 @@ function extractCardArticlesFromHotspots(html) {
const cards = parts.map((chunk) => chunk.split(/