/**
 * MindSpace / 公众号草稿推送格式标准（2026-09-11）。
 * 所有页面推送到微信草稿箱时必须经过同一套 layout + 封面解析。
 * 实现入口：mindspace-wechat-page-draft.mjs → buildWechatDraftPublicationBundleForPush
 * 布局模块：wechat-draft-article-layout.mjs
 */

export const WECHAT_DRAFT_PUBLICATION_STANDARD_VERSION = '2026-09-11';

export const WECHAT_DRAFT_PUBLICATION_STANDARD = Object.freeze({
  version: WECHAT_DRAFT_PUBLICATION_STANDARD_VERSION,
  /** 正文区块顺序（不含 daily-news 专有栏目，其仍复用底部 layout） */
  bodyLayout: Object.freeze([
    'hero-image-if-present',
    'page-content',
    'read-original-link',
    'follow-footer',
  ]),
  readOriginal: Object.freeze({
    position: 'after-content-before-footer',
    label: '阅读原文',
    style: 'compact-link-12px',
    forbidLegacyLargeButton: true,
  }),
  followFooter: Object.freeze({
    title: '欢迎关注 TKMind 智趣',
    includeLogo: false,
    includeSubtitle: false,
    includeQrcode: true,
  }),
  cover: Object.freeze({
    priority: Object.freeze(['hero-raster', 'thumbnail-png-sidecar', 'thumbnail-svg-sidecar', 'placeholder']),
    allowSvgSidecarAsRasterFallback: true,
    heroSources: Object.freeze([
      'mindspace-cover.cover',
      'css-hero-background-image',
      'hero-img',
    ]),
    mustMatchBodyHeroWhenPresent: true,
  }),
  images: Object.freeze({
    bodyUpload: 'wechat-uploadimg',
    coverUpload: 'wechat-permanent-thumb',
    preferHttps: true,
  }),
  limits: Object.freeze({
    maxContentChars: 20000,
  }),
});

export function verifyWechatDraftPublicationContent(
  content,
  { publicUrl = '', requireReadOriginal = Boolean(publicUrl) } = {},
) {
  const issues = [];
  const text = String(content ?? '');

  if (requireReadOriginal && !text.includes('阅读原文')) {
    issues.push('缺少「阅读原文」链接');
  }
  if (!text.includes(WECHAT_DRAFT_PUBLICATION_STANDARD.followFooter.title)) {
    issues.push('缺少底部关注区标题');
  }
  if (text.includes('点击阅读原文')) {
    issues.push('不得使用旧版大按钮「点击阅读原文」');
  }
  if (/alt="TKMind 智趣"/.test(text)) {
    issues.push('底部关注区不得包含 logo 图片');
  }
  if (/获取更多精彩内容|每日早报不错过/.test(text)) {
    issues.push('底部关注区不得包含额外导语');
  }

  const readIdx = text.indexOf('阅读原文');
  const followIdx = text.indexOf(WECHAT_DRAFT_PUBLICATION_STANDARD.followFooter.title);
  if (readIdx >= 0 && followIdx >= 0 && readIdx > followIdx) {
    issues.push('「阅读原文」须位于正文之后、关注区之前');
  }

  return { ok: issues.length === 0, issues };
}

export function verifyWechatDraftCoverResolution(resolved) {
  const issues = [];
  if (!resolved?.source) {
    issues.push('缺少封面来源');
  }
  return { ok: issues.length === 0, issues };
}