56 lines
1.6 KiB
TypeScript
56 lines
1.6 KiB
TypeScript
/** 报名者项（mock 用 name，DB 用 nickname） */
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export type JoinerItem = {
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name?: string;
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nickname?: string;
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avatar?: string;
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xiaohongshu_url?: string;
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};
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/** 去重 key：小红书 url 相同视为 1 人，无 url 时用 avatar，再 fallback nickname */
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function dedupeKey(j: JoinerItem, useAvatarForMock: boolean): string {
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const xh = (j.xiaohongshu_url || "").trim();
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if (xh && !useAvatarForMock) return `xh:${xh}`;
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const avatar = (j.avatar || "").trim();
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if (avatar) return `av:${avatar}`;
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return `_${(j.nickname || j.name || "").trim()}`;
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}
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/**
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* 合并 mock 与数据库报名者：mock 固定 3 个在左，DB 在右
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* 小红书 url 相同视为 1 人，avatar 相同也只显示 1 个
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* 最多显示 8 个，保证 PC/H5 排版合理
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*/
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export function mergeJoiners(
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mock: JoinerItem[],
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db: JoinerItem[] | undefined
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): JoinerItem[] {
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const seen = new Set<string>();
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const result: JoinerItem[] = [];
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mock.forEach((j) => {
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const key = dedupeKey(j, true);
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if (!seen.has(key)) {
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seen.add(key);
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result.push(j);
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}
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});
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(db || []).forEach((j) => {
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const key = dedupeKey(j, false);
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if (!seen.has(key)) {
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seen.add(key);
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result.push(j);
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}
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});
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return result.slice(0, 8);
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}
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/** 数据库报名者按小红书 url 去重后的数量（用于显示报名人数） */
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export function getUniqueDbCount(db: JoinerItem[] | undefined): number {
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if (!db?.length) return 0;
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const seen = new Set<string>();
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for (const j of db) {
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const key = dedupeKey(j, false);
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seen.add(key);
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}
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return seen.size;
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}
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