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257 lines
9.9 KiB
TypeScript
257 lines
9.9 KiB
TypeScript
import type {
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CommentRow,
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CookedComment,
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CookedNotify,
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CookedPage,
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CookedSite,
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CookedUser,
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Env,
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PageRow,
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SiteRow,
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UserRow,
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} from '../types';
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import { findPagesByKeys, findUsersByIds, siteFirstUrl } from './db';
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import { renderMarkdown } from './md';
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import { md5Lower } from './md5';
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import { formatDateCN } from './util';
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// ============================================================================
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// 评论等级（九品十八阶）——与博客主题 Ying 的 RANK_TABLE 保持一致。
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// 主题原来用 localStorage 自己累计（换设备/清缓存就归零、别人看到的也不准），
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// 现在改成后端按全站真实评论数算好，直接塞进官方 badge_name/badge_color
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// 字段——官方前端原生渲染白字彩底徽章，跨设备全局一致。
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// 只对「没有自定义徽章」的用户生效；博主等保留原徽章不覆盖。
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// ============================================================================
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interface Rank {
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min: number;
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title: string;
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short: string;
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/** 徽章文字色（与主题原版配色一致） */
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color: string;
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/** 徽章半透明底色（与主题原版配色一致） */
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bg: string;
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}
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const RANK_TABLE: Rank[] = [
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{ min: 2000, title: '正一品·太师', short: '太师', color: '#c5881b', bg: 'rgba(197,136,27,0.16)' },
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{ min: 1400, title: '从一品·太尉', short: '太尉', color: '#cc942a', bg: 'rgba(204,148,42,0.13)' },
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{ min: 1050, title: '正二品·参知政事', short: '参知政事', color: '#d46d33', bg: 'rgba(212,109,51,0.16)' },
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{ min: 800, title: '从二品·节度使', short: '节度使', color: '#d87940', bg: 'rgba(216,121,64,0.13)' },
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{ min: 600, title: '正三品·御史中丞', short: '御史中丞', color: '#cf4a58', bg: 'rgba(207,74,88,0.16)' },
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{ min: 480, title: '从三品·秘书监', short: '秘书监', color: '#d45d68', bg: 'rgba(212,93,104,0.13)' },
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{ min: 380, title: '正四品·谏议大夫', short: '谏议大夫', color: '#b05385', bg: 'rgba(176,83,133,0.16)' },
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{ min: 300, title: '从四品·侍读学士', short: '侍读学士', color: '#b8638f', bg: 'rgba(184,99,143,0.13)' },
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{ min: 240, title: '正五品·给事中', short: '给事中', color: '#9570d6', bg: 'rgba(149,112,214,0.16)' },
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{ min: 190, title: '从五品·知州', short: '知州', color: '#a07bda', bg: 'rgba(160,123,218,0.13)' },
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{ min: 150, title: '正六品·侍御史', short: '侍御史', color: '#5f7ace', bg: 'rgba(95,122,206,0.16)' },
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{ min: 115, title: '从六品·通判', short: '通判', color: '#6b85d0', bg: 'rgba(107,133,208,0.13)' },
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{ min: 85, title: '正七品·知县', short: '知县', color: '#2a9a84', bg: 'rgba(42,154,132,0.16)' },
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{ min: 60, title: '从七品·殿中侍御史', short: '殿中侍御史', color: '#34a390', bg: 'rgba(52,163,144,0.13)' },
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{ min: 40, title: '正八品·大理评事', short: '大理评事', color: '#628530', bg: 'rgba(98,133,48,0.16)' },
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{ min: 25, title: '从八品·录事参军', short: '录事参军', color: '#6e913d', bg: 'rgba(110,145,61,0.13)' },
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{ min: 15, title: '正九品·主簿', short: '主簿', color: '#8a7050', bg: 'rgba(138,112,80,0.16)' },
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{ min: 5, title: '从九品·司户参军', short: '司户参军', color: '#917a5c', bg: 'rgba(145,122,92,0.13)' },
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{ min: 0, title: '庶民', short: '庶民', color: '#8a8e98', bg: 'rgba(138,142,152,0.10)' },
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];
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function getRank(count: number): Rank {
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for (const r of RANK_TABLE) {
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if (count >= r.min) return r;
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}
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return RANK_TABLE[RANK_TABLE.length - 1];
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}
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// Worker isolate 级缓存：评论数变化慢，同一实例的后续请求零 D1 消耗。
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// （D1 免费额度按 rows_read 计费，GROUP BY 全表扫很贵，必须挡在缓存后面）
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const RANK_CACHE_TTL = 10 * 60 * 1000;
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const rankCache = ((globalThis as Record<string, unknown>).__atkRankCache ??= new Map<
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number,
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{ n: number; t: number }
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>()) as Map<number, { n: number; t: number }>;
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async function getCommentCounts(env: Env, userIds: number[]): Promise<Map<number, number>> {
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const out = new Map<number, number>();
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const missing: number[] = [];
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const now = Date.now();
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for (const id of userIds) {
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const hit = rankCache.get(id);
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if (hit && now - hit.t < RANK_CACHE_TTL) out.set(id, hit.n);
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else missing.push(id);
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}
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if (missing.length) {
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const rows = (
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await env.DB.prepare(
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`SELECT user_id, COUNT(*) AS n FROM comments
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WHERE deleted_at = 0 AND user_id IN (${missing.map(() => '?').join(',')})
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GROUP BY user_id`,
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)
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.bind(...missing)
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.all<{ user_id: number; n: number }>()
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.catch(() => ({ results: [] as { user_id: number; n: number }[] }))
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).results;
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for (const r of rows ?? []) {
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out.set(r.user_id, r.n);
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rankCache.set(r.user_id, { n: r.n, t: now });
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}
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// 查不到的（0 条评论）也缓存，避免反复查
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for (const id of missing) {
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if (!out.has(id)) {
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out.set(id, 0);
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rankCache.set(id, { n: 0, t: now });
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}
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}
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}
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return out;
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}
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/** page_key 是相对路径时，拼到站点地址后面（与 Artalk GetPageAccessibleURL 一致） */
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export function pageAccessibleUrl(pageKey: string, siteUrl: string): string {
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if (/^https?:\/\//i.test(pageKey)) return pageKey;
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if (!siteUrl) return pageKey;
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try {
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return new URL(pageKey, siteUrl.endsWith('/') ? siteUrl : `${siteUrl}/`).toString();
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} catch {
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return pageKey;
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}
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}
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export function cookUser(u: UserRow): CookedUser {
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return {
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id: u.id,
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name: u.name,
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email: u.email,
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link: u.link || '',
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badge_name: u.badge_name || '',
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badge_color: u.badge_color || '',
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title_name: u.title_name || '',
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is_admin: !!u.is_admin,
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receive_email: !!u.receive_email,
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};
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}
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export function cookSite(s: SiteRow): CookedSite {
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const urls = (s.urls || '')
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.split(',')
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.map((x) => x.trim())
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.filter(Boolean);
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return { id: s.id, name: s.name, urls, urls_raw: s.urls || '', first_url: urls[0] || '' };
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}
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export function cookPage(p: PageRow, siteUrl = ''): CookedPage {
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return {
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id: p.id,
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admin_only: !!p.admin_only,
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key: p.key,
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url: p.accessible_url || pageAccessibleUrl(p.key, siteUrl),
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title: p.title || '',
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site_name: p.site_name,
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vote_up: p.vote_up || 0,
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vote_down: p.vote_down || 0,
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pv: p.pv || 0,
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date: formatDateCN(p.created_at),
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};
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}
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export function cookNotify(n: {
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id: number;
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user_id: number;
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comment_id: number;
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is_read: number;
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is_emailed: number;
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}, readLink = ''): CookedNotify {
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return {
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id: n.id,
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user_id: n.user_id,
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comment_id: n.comment_id,
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is_read: !!n.is_read,
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is_emailed: !!n.is_emailed,
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read_link: readLink,
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};
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}
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/**
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* 批量把评论行转成 API 结构。
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* 一次性把用到的 user / page 捞出来，避免 N+1（Worker 里每次 D1 查询都是成本）。
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*
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* ★ includeMarked 默认 false：content_marked 是「把 content 再渲染一遍成 HTML」，
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* 体积几乎翻倍，而且 **Artalk 2.8.x 客户端根本不消费它**（它自带 marked，在浏览器里
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* 渲染 content；只有官方后台 sidebar 会用到）。实测 20 条评论 36KB，
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* 去掉后能砍掉一大半，跨境加载明显更快。
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* → 只有管理员请求（后台）才带上这个字段。
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*/
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export async function cookComments(
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env: Env,
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rows: CommentRow[],
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opts: { ipRegion?: boolean; visibility?: Map<number, boolean>; includeMarked?: boolean } = {},
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): Promise<CookedComment[]> {
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if (!rows.length) return [];
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const users = await findUsersByIds(
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env,
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rows.map((r) => r.user_id),
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);
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// 评论等级：批量取本批用户的真实评论数（带 isolate 缓存）
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const distinctUserIds = [...new Set(rows.map((r) => r.user_id))];
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const commentCounts = await getCommentCounts(env, distinctUserIds);
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const bySite = new Map<string, string[]>();
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for (const r of rows) {
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const arr = bySite.get(r.site_name) ?? [];
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arr.push(r.page_key);
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bySite.set(r.site_name, arr);
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}
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const pageMap = new Map<string, PageRow>();
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const siteUrlMap = new Map<string, string>();
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for (const [siteName, keys] of bySite) {
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for (const [k, v] of await findPagesByKeys(env, keys, siteName)) {
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pageMap.set(`${siteName}\u0000${k}`, v);
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}
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siteUrlMap.set(siteName, await siteFirstUrl(env, siteName));
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}
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return rows.map((c) => {
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const user = users.get(c.user_id);
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const siteUrl = siteUrlMap.get(c.site_name) || '';
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const page = pageMap.get(`${c.site_name}\u0000${c.page_key}`);
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const cook: CookedComment = {
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id: c.id,
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content: c.content,
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content_marked: opts.includeMarked ? renderMarkdown(c.content) : '',
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user_id: c.user_id,
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nick: user?.name ?? '',
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email_encrypted: md5Lower(user?.email ?? ''),
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link: user?.link ?? '',
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ua: c.ua || '',
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date: formatDateCN(c.created_at),
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is_collapsed: !!c.is_collapsed,
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is_pending: !!c.is_pending,
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is_pinned: !!c.is_pinned,
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is_allow_reply: !c.is_collapsed && !c.is_pending,
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is_verified: user?.is_admin ? true : !!c.is_verified,
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rid: c.rid,
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badge_name: user?.badge_name ?? '',
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badge_color: user?.badge_color ?? '',
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title_name: user?.title_name || '',
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visible: opts.visibility?.get(c.id) ?? true,
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vote_up: c.vote_up || 0,
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vote_down: c.vote_down || 0,
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page_key: c.page_key,
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page_url: page ? cookPage(page, siteUrl).url : pageAccessibleUrl(c.page_key, siteUrl),
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site_name: c.site_name,
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};
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if (opts.ipRegion && c.ip_region) cook.ip_region = c.ip_region;
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// 官职徽标独立字段：不占用官方 badge 槽（博主的「博主」徽章独一无二，
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// 官职接在它后面由主题渲染），配色沿用主题原版（彩字 + 半透明底）
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const rank = getRank(commentCounts.get(c.user_id) ?? 0);
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const myCount = commentCounts.get(c.user_id) ?? 0;
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cook.rank_name = rank.short;
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cook.rank_title = rank.title;
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cook.rank_count = myCount;
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cook.rank_color = rank.color;
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cook.rank_bg = rank.bg;
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return cook;
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});
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}
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