feat: add modular services and repositories for improved code organization

Introduce repository pattern across multiple services, including `favorites`, `tags`, `sessions`, `reports`, `auth`, and more. Decouple crypto functionalities into modular services like `HashingService`, `JwtService`, and `EncryptionService`. Improve testability and maintainability by simplifying dependencies and consolidating utility logic.

backend/src/common/services/purge.service.ts

@@ -1,14 +1,20 @@
 import { Injectable, Logger } from "@nestjs/common";
 import { Cron, CronExpression } from "@nestjs/schedule";
-import { and, eq, isNotNull, lte } from "drizzle-orm";
-import { DatabaseService } from "../../database/database.service";
-import { contents, reports, sessions, users } from "../../database/schemas";
+import { ContentsRepository } from "../../contents/repositories/contents.repository";
+import { ReportsRepository } from "../../reports/repositories/reports.repository";
+import { SessionsRepository } from "../../sessions/repositories/sessions.repository";
+import { UsersRepository } from "../../users/repositories/users.repository";
 
 @Injectable()
 export class PurgeService {
 	private readonly logger = new Logger(PurgeService.name);
 
-	constructor(private readonly databaseService: DatabaseService) {}
+	constructor(
+		private readonly sessionsRepository: SessionsRepository,
+		private readonly reportsRepository: ReportsRepository,
+		private readonly usersRepository: UsersRepository,
+		private readonly contentsRepository: ContentsRepository,
+	) {}
 
 	// Toutes les nuits à minuit
 	@Cron(CronExpression.EVERY_DAY_AT_MIDNIGHT)
@@ -19,40 +25,26 @@ export class PurgeService {
 			const now = new Date();
 
 			// 1. Purge des sessions expirées
-			const deletedSessions = await this.databaseService.db
-				.delete(sessions)
-				.where(lte(sessions.expiresAt, now))
-				.returning();
+			const deletedSessions = await this.sessionsRepository.purgeExpired(now);
 			this.logger.log(`Purged ${deletedSessions.length} expired sessions.`);
 
 			// 2. Purge des signalements obsolètes
-			const deletedReports = await this.databaseService.db
-				.delete(reports)
-				.where(lte(reports.expiresAt, now))
-				.returning();
+			const deletedReports = await this.reportsRepository.purgeObsolete(now);
 			this.logger.log(`Purged ${deletedReports.length} obsolete reports.`);
 
 			// 3. Purge des utilisateurs supprimés (Soft Delete > 30 jours)
 			const thirtyDaysAgo = new Date();
 			thirtyDaysAgo.setDate(thirtyDaysAgo.getDate() - 30);
 
-			const deletedUsers = await this.databaseService.db
-				.delete(users)
-				.where(
-					and(eq(users.status, "deleted"), lte(users.deletedAt, thirtyDaysAgo)),
-				)
-				.returning();
+			const deletedUsers = await this.usersRepository.purgeDeleted(thirtyDaysAgo);
 			this.logger.log(
 				`Purged ${deletedUsers.length} users marked for deletion more than 30 days ago.`,
 			);
 
 			// 4. Purge des contenus supprimés (Soft Delete > 30 jours)
-			const deletedContents = await this.databaseService.db
-				.delete(contents)
-				.where(
-					and(isNotNull(contents.deletedAt), lte(contents.deletedAt, thirtyDaysAgo)),
-				)
-				.returning();
+			const deletedContents = await this.contentsRepository.purgeSoftDeleted(
+				thirtyDaysAgo,
+			);
 			this.logger.log(
 				`Purged ${deletedContents.length} contents marked for deletion more than 30 days ago.`,
 			);