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Implement new endpoint
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64
src/server/api/endpoints/aggregation/hashtags.ts
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64
src/server/api/endpoints/aggregation/hashtags.ts
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import Note from '../../../../models/note';
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import Meta from '../../../../models/meta';
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export default () => new Promise(async (res, rej) => {
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const meta = await Meta.findOne({});
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const hidedTags = (meta.hidedTags || []).map(t => t.toLowerCase());
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const span = 1000 * 60 * 60 * 24 * 7; // 1週間
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//#region 1. 指定期間の内に投稿されたハッシュタグ(とユーザーのペア)を集計
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const data = await Note.aggregate([{
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$match: {
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createdAt: {
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$gt: new Date(Date.now() - span)
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},
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tagsLower: {
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$exists: true,
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$ne: []
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}
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}
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}, {
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$unwind: '$tagsLower'
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}, {
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$group: {
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_id: { tag: '$tagsLower', userId: '$userId' }
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}
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}]) as Array<{
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_id: {
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tag: string;
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userId: any;
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}
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}>;
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//#endregion
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if (data.length == 0) {
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return res([]);
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}
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let tags: Array<{
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name: string;
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count: number;
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}> = [];
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// カウント
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data.map(x => x._id).forEach(x => {
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// ブラックリストに登録されているタグなら弾く
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if (hidedTags.includes(x.tag)) return;
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const i = tags.findIndex(tag => tag.name == x.tag);
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if (i != -1) {
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tags[i].count++;
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} else {
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tags.push({
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name: x.tag,
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count: 1
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});
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}
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});
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// タグを人気順に並べ替え
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tags = tags.sort((a, b) => b.count - a.count);
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res(tags);
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});
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