social share up and running
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import { Injectable, Logger } from '@nestjs/common';
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import { InjectRepository } from '@nestjs/typeorm';
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import { Repository } from 'typeorm';
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import { ShareEvent, SharePlatform } from './analytics.entity';
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import { Article } from '../entities';
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import {
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TrackShareDto,
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GetShareStatsDto,
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ShareStatsResponse,
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} from './analytics.dto';
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@Injectable()
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export class AnalyticsService {
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private readonly logger = new Logger(AnalyticsService.name);
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constructor(
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@InjectRepository(ShareEvent)
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private readonly shareEventRepository: Repository<ShareEvent>,
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@InjectRepository(Article)
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private readonly articleRepository: Repository<Article>,
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) {}
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async trackShare(trackShareDto: TrackShareDto): Promise<ShareEvent> {
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const shareEvent = this.shareEventRepository.create(trackShareDto);
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// Also update the article's share counters
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await this.incrementArticleShareCounter(
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trackShareDto.articleId,
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trackShareDto.platform,
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);
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return await this.shareEventRepository.save(shareEvent);
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}
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private async incrementArticleShareCounter(
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articleId: string,
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platform: SharePlatform,
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): Promise<void> {
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const updateField = this.getShareCounterField(platform);
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if (!updateField) return;
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await this.articleRepository
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.createQueryBuilder()
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.update(Article)
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.set({ [updateField]: () => `${updateField} + 1` })
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.where('id = :id', { id: articleId })
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.execute();
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}
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private getShareCounterField(platform: SharePlatform): string | null {
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switch (platform) {
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case 'facebook':
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return 'facebookShares';
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case 'twitter':
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return 'twitterShares';
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case 'whatsapp':
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return 'whatsappShares';
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case 'telegram':
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return 'telegramShares';
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default:
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return null; // 'link' shares don't increment counters
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}
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}
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async getShareStats(
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getShareStatsDto: GetShareStatsDto,
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): Promise<ShareStatsResponse[]> {
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const query = this.articleRepository
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.createQueryBuilder('article')
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.select([
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'article.id as "articleId"',
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'article.title as "articleTitle"',
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'article.facebookShares as "facebookShares"',
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'article.twitterShares as "twitterShares"',
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'article.whatsappShares as "whatsappShares"',
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'article.telegramShares as "telegramShares"',
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'article.views as "views"',
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'article.createdAt as "createdAt"',
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'article.updatedAt as "updatedAt"',
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])
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.addSelect(
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`(article.facebookShares + article.twitterShares + article.whatsappShares + article.telegramShares) as "totalShares"`,
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)
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.addSelect(
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`CASE
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WHEN article.views > 0
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THEN ROUND(
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(article.facebookShares + article.twitterShares + article.whatsappShares + article.telegramShares)::decimal / article.views * 100,
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2
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)
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ELSE 0
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END as "shareRate"`,
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);
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if (getShareStatsDto.articleId) {
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query.where('article.id = :articleId', {
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articleId: getShareStatsDto.articleId,
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});
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}
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if (getShareStatsDto.startDate) {
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query.andWhere('article.createdAt >= :startDate', {
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startDate: getShareStatsDto.startDate,
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});
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}
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if (getShareStatsDto.endDate) {
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query.andWhere('article.createdAt <= :endDate', {
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endDate: getShareStatsDto.endDate,
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});
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}
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query.orderBy('"totalShares"', 'DESC');
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const rawResults = await query.getRawMany<{
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articleId: string;
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articleTitle: string;
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facebookShares: string;
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twitterShares: string;
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whatsappShares: string;
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telegramShares: string;
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views: string;
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createdAt: string;
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updatedAt: string;
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totalShares: string;
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shareRate: string;
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}>();
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// Get link shares from share_events table
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const results: ShareStatsResponse[] = [];
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for (const rawResult of rawResults) {
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const linkShares = await this.shareEventRepository.count({
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where: {
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articleId: rawResult.articleId,
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platform: 'link',
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},
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});
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const facebookShares = parseInt(rawResult.facebookShares) || 0;
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const twitterShares = parseInt(rawResult.twitterShares) || 0;
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const whatsappShares = parseInt(rawResult.whatsappShares) || 0;
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const telegramShares = parseInt(rawResult.telegramShares) || 0;
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const views = parseInt(rawResult.views) || 0;
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const baseTotalShares =
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facebookShares + twitterShares + whatsappShares + telegramShares;
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const totalShares = baseTotalShares + linkShares;
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const shareRate =
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views > 0 ? parseFloat(((totalShares / views) * 100).toFixed(2)) : 0;
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results.push({
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articleId: rawResult.articleId,
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articleTitle: rawResult.articleTitle,
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facebookShares,
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twitterShares,
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whatsappShares,
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telegramShares,
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linkShares,
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totalShares,
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views,
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shareRate,
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createdAt: new Date(rawResult.createdAt),
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updatedAt: new Date(rawResult.updatedAt),
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});
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}
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return results;
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}
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async getTopSharedArticles(
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limit: number = 10,
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): Promise<ShareStatsResponse[]> {
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const stats = await this.getShareStats({});
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return stats.slice(0, limit);
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}
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async getShareTrends(
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startDate: Date,
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endDate: Date,
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interval: 'day' | 'week' | 'month' = 'day',
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): Promise<
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Array<{ period: string; platform: SharePlatform; count: number }>
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> {
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const dateFormat =
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interval === 'day'
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? 'YYYY-MM-DD'
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: interval === 'week'
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? 'YYYY-WW'
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: 'YYYY-MM';
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const query = this.shareEventRepository
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.createQueryBuilder('share_event')
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.select([
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`TO_CHAR(share_event.createdAt, '${dateFormat}') as period`,
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'share_event.platform as platform',
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'COUNT(*) as count',
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])
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.where('share_event.createdAt >= :startDate', { startDate })
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.andWhere('share_event.createdAt <= :endDate', { endDate })
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.groupBy('period, platform')
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.orderBy('period', 'ASC');
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const rawResults = await query.getRawMany<{
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period: string;
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platform: string;
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count: string;
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}>();
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// Convert platform strings to SharePlatform type
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return rawResults.map((result) => ({
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period: result.period,
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platform: result.platform as SharePlatform,
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count: parseInt(result.count) || 0,
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}));
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}
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async getTotalShareStats(): Promise<{
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totalShares: number;
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facebookShares: number;
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twitterShares: number;
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whatsappShares: number;
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telegramShares: number;
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linkShares: number;
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}> {
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interface ArticleStatsRaw {
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facebookShares: string;
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twitterShares: string;
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whatsappShares: string;
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telegramShares: string;
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}
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const articleStats = (await this.articleRepository
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.createQueryBuilder('article')
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.select([
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'SUM(article.facebookShares) as facebookShares',
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'SUM(article.twitterShares) as twitterShares',
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'SUM(article.whatsappShares) as whatsappShares',
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'SUM(article.telegramShares) as telegramShares',
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])
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.getRawOne()) as ArticleStatsRaw;
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const linkShares = await this.shareEventRepository.count({
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where: { platform: 'link' },
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});
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const facebookShares = parseInt(articleStats?.facebookShares || '0') || 0;
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const twitterShares = parseInt(articleStats?.twitterShares || '0') || 0;
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const whatsappShares = parseInt(articleStats?.whatsappShares || '0') || 0;
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const telegramShares = parseInt(articleStats?.telegramShares || '0') || 0;
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const totalShares =
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facebookShares +
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twitterShares +
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whatsappShares +
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telegramShares +
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linkShares;
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return {
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totalShares,
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facebookShares,
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twitterShares,
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whatsappShares,
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telegramShares,
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linkShares,
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};
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}
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}
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