feat(notify): setup notifications packages

package.json

@@ -20,15 +20,18 @@
     "test:e2e": "jest --config ./test/jest-e2e.json"
   },
   "dependencies": {
+    "@nestjs/bullmq": "^11.0.3",
     "@nestjs/common": "^11.0.1",
     "@nestjs/config": "^4.0.2",
     "@nestjs/core": "^11.0.1",
+    "@nestjs/event-emitter": "^3.0.1",
     "@nestjs/jwt": "^11.0.0",
     "@nestjs/passport": "^11.0.5",
     "@nestjs/platform-express": "^11.0.1",
     "@nestjs/schedule": "^6.0.0",
     "@nestjs/swagger": "^11.2.0",
     "@prisma/client": "^6.11.1",
+    "bullmq": "^5.56.9",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.2",
     "express-session": "^1.18.2",
@@ -41,7 +44,7 @@
   "devDependencies": {
     "@eslint/eslintrc": "^3.2.0",
     "@eslint/js": "^9.18.0",
-    "@nestjs/cli": "^11.0.0",
+    "@nestjs/cli": "^10.4.9",
     "@nestjs/schematics": "^11.0.0",
     "@nestjs/testing": "^11.0.1",
     "@swc/cli": "^0.6.0",
@@ -50,6 +53,7 @@
     "@types/express-session": "^1.18.2",
     "@types/jest": "^29.5.14",
     "@types/node": "^22.10.7",
+    "@types/nodemailer": "^6.4.17",
     "@types/passport-jwt": "^4.0.1",
     "@types/passport-openidconnect": "^0.1.3",
     "@types/supertest": "^6.0.2",

src/app.module.ts

@@ -1,45 +1,47 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
-import { PrismaModule } from './prisma/prisma.module';
-import { HealthModule } from './health/health.module';
-import { HealthController } from './health/health.controller';
-import { UsersModule } from './modules/users-management/users.module';
+import { ArchivalModule } from './modules/archival/archival.module';
+import { AuthenticationModule } from './modules/authentication/auth.module';
+import { BankCodesModule } from './modules/bank-codes/bank-codes.module';
+import { BusinessLogicsModule } from './modules/business-logics/business-logics.module';
+import { CsvExportModule } from './modules/exports/csv-exports.module';
 import { CustomersModule } from './modules/customers/customers.module';
 import { EmployeesModule } from './modules/employees/employees.module';
+import { EventEmitterModule } from '@nestjs/event-emitter';
+import { ExpensesModule } from './modules/expenses/expenses.module';
+import { HealthModule } from './health/health.module';
+import { HealthController } from './health/health.controller';
 import { LeaveRequestsModule } from './modules/leave-requests/leave-requests.module';
+import { OauthSessionsModule } from './modules/oauth-sessions/oauth-sessions.module';
+import { OvertimeService } from './modules/business-logics/services/overtime.service';
+import { PayperiodsModule } from './modules/pay-periods/pay-periods.module';
+import { PrismaModule } from './prisma/prisma.module';
+import { ScheduleModule } from '@nestjs/schedule';
 import { ShiftsModule } from './modules/shifts/shifts.module';
 import { TimesheetsModule } from './modules/timesheets/timesheets.module';
-import { AuthenticationModule } from './modules/authentication/auth.module';
-import { ExpensesModule } from './modules/expenses/expenses.module';
-import { PayperiodsModule } from './modules/pay-periods/pay-periods.module';
-import { ScheduleModule } from '@nestjs/schedule';
-import { ArchivalModule } from './modules/archival/archival.module';
-import { BankCodesModule } from './modules/bank-codes/bank-codes.module';
-import { OvertimeService } from './modules/business-logics/services/overtime.service';
-import { BusinessLogicsModule } from './modules/business-logics/business-logics.module';
-import { OauthSessionsModule } from './modules/oauth-sessions/oauth-sessions.module';
-import { CsvExportModule } from './modules/exports/csv-exports.module';
+import { UsersModule } from './modules/users-management/users.module';
 
 @Module({
   imports: [
-      ScheduleModule.forRoot(),
-      ArchivalModule,
-      AuthenticationModule,
-      BankCodesModule,
-      BusinessLogicsModule,
-      CsvExportModule,
-      CustomersModule,
-      EmployeesModule,
-      ExpensesModule,
-      HealthModule,
-      LeaveRequestsModule,
-      OauthSessionsModule,
-      PayperiodsModule,
-      PrismaModule,
-      ShiftsModule,
-      TimesheetsModule,
-      UsersModule,
+    ArchivalModule,
+    AuthenticationModule,
+    BankCodesModule,
+    BusinessLogicsModule,
+    CsvExportModule,
+    CustomersModule,
+    EmployeesModule,
+    EventEmitterModule.forRoot(),
+    ExpensesModule,
+    HealthModule,
+    LeaveRequestsModule,
+    OauthSessionsModule,
+    PayperiodsModule,
+    PrismaModule,
+    ScheduleModule.forRoot(),
+    ShiftsModule,
+    TimesheetsModule,
+    UsersModule,
     ],
   controllers: [AppController, HealthController],
   providers: [AppService, OvertimeService],

src/modules/notifications/notifications.service.ts

@@ -0,0 +1,73 @@
+import { InjectQueue } from "@nestjs/bullmq";
+import { Injectable, Logger } from "@nestjs/common";
+import { Queue } from "bullmq";
+import { TimesheetsService } from "../timesheets/services/timesheets.service";
+import { ShiftsService } from "../shifts/services/shifts.service";
+import { ExpensesService } from "../expenses/services/expenses.service";
+import { EmployeesService } from "../employees/services/employees.service";
+import { LeaveRequestsService } from "../leave-requests/services/leave-requests.service";
+
+export interface DigestItem {
+    title: string;
+    description: string;
+    link?: string;
+}
+
+@Injectable()
+export class NotificationsService {
+    private readonly logger = new Logger(NotificationsService.name);
+    
+    constructor(
+        @InjectQueue('notifications') private readonly queue: Queue,
+        private readonly timesheetsService : TimesheetsService,
+        private readonly shiftsService : ShiftsService,
+        private readonly expensesService : ExpensesService,
+        private readonly employeesService : EmployeesService,
+        private readonly leaveRequestsService: LeaveRequestsService,
+    ) {}
+
+    async queueNotification(channel: string, payload: Record<string,any>): Promise<void> {
+        await this.queue.add(channel, payload);
+        this.logger.debug(`Enqueued notification on channel= "${channel}"`);
+    }
+
+    async buildWeeklyDigest(): Promise<{recipients: string[], items: DigestItem[]}> {
+        //TO DO add logic of missing shifts, overtime alert, vacation alerts, leave-requests, etc...
+        //fetching all business datas
+        //const missingShifts = await this.timesheetsService.findMissingShftsLastWeek();
+
+        const items: DigestItem[] = [
+            //example:
+            {title: 'Carte de temps incomplete', description: 'Des employes n`ont pas saisi leurs quarts de travail'},
+            {title: 'Overtime détecté', description: '....'},
+        ];
+
+        const recipients = [
+            //exemple : await this.userService.findSupervisorsEmails();
+            'supervisor@targointernet.com',
+            'accounting@targointernet.com',
+        ];
+
+        return {recipients, items}
+    }
+
+
+    async buildMonthlyDigest(): Promise<{ recipients: string[], items: DigestItem[]}> {
+        //const anniversaries = await this.employeesService.findAnniversariesthisMonth();
+        //const totalOvertime = await this.timesheetsService.calculateTotalOvertimeThisMonth();
+
+        const items: DigestItem[] = [
+            {title: '5 ans d`ancienneté', description:'Marc-André, Jessy'},
+            {title: '10 ans d`ancienneté', description:'Kadi, Maxime'},
+            {title: 'Calendrier Annuel', description: 'Nouveau calendrier de l`an prochain maintenant disponible!'},
+            // ...
+        ];
+
+        const recipients = [
+            'allemployees@targointernent.com',
+        ];
+
+        return { recipients, items };
+    }
+    
+}

src/modules/notifications/notifications.tasks.service.ts

@@ -0,0 +1,94 @@
+import { Injectable, Logger } from "@nestjs/common";
+import { Cron, Interval, SchedulerRegistry } from "@nestjs/schedule";
+import { NotificationsService as Orchestrator } from './notifications.service';
+
+@Injectable()
+export class NotificationsService {
+    private readonly logger = new Logger(NotificationsService.name);
+
+    constructor(
+        private readonly schedulerRegistry: SchedulerRegistry,
+        private readonly orchestrator: Orchestrator,
+    ) {}
+
+    //cache purging
+    //@TimeOut(15_000)
+    async onStartup() {
+        this.logger.debug('Startup cleanup: initial verifications');
+        //clean up of useless cache on start up
+    }
+
+    //Q monitoring
+    @Interval(300_000)
+    async monitorQueueHealth() {
+        this.logger.debug('monitoring notification queue')
+        //this.orchestrator.checkQueueLength();
+        //monitor backlog for overload and such
+    }
+
+
+    //weekly cron jobs
+    @Cron('0 0 8 * * 1', {
+        name: 'weeklyDigest',
+        timeZone: 'America/Toronto',
+    })
+    async sendWeeklyDigest() {
+        this.logger.debug('Building Weekly digest');
+        const { recipients, items } = await this.orchestrator.buildWeeklyDigest();
+        await this.orchestrator.queueNotification('email', {
+            to: recipients,
+            subject: '[Journal Hebdo] Sommaire de la semaine dernière',
+            template: 'weekly-digest',
+            context: { items },
+        });
+        this.logger.debug('Weekly digest Queued');
+    }
+
+    async disableWeeklyDigest() {
+        const job = this.schedulerRegistry.getCronJob('weeklyDigest');
+        job.stop();
+        this.logger.debug(`Weekly digest stopped`);
+    }
+
+    async enableWeeklyDigest() {
+        const job = this.schedulerRegistry.getCronJob('weeklyDigest');
+        job.start();
+        this.logger.debug(`Weekly digest started`);
+    }
+
+    //monthly cron jobs
+    @Cron('0 0 9 1 * *', {
+        name: 'monthlyDigest',
+        timeZone: 'America/Toronto',
+    })
+    async sendMonthlyDigest() {
+        this.logger.debug('Building Monthly digest');
+        const {recipients, items} = await this.orchestrator.buildMonthlyDigest();
+        await this.orchestrator.queueNotification('email', {
+            to: recipients,
+            subject: '[Journal Mensuel] Sommaire du mois',
+            template: 'monthly-digest',
+            context: { items },
+
+        })
+        this.logger.debug('Monthly digest queued');
+    }
+
+    async disableMonthlyDigest() {
+        const job = this.schedulerRegistry.getCronJob('monthlyDigest');
+        job.stop();
+        this.logger.debug(`Monthly digest stopped`);
+    }
+
+    async enableMonthlyDigest() {
+        const job = this.schedulerRegistry.getCronJob('monthlyDigest');
+        job.start();
+        this.logger.debug(`Monthly digest stopped`);
+    }
+
+
+}
+
+function TimeOut(arg0: number): (target: Orchestrator, propertyKey: "onStartup", descriptor: TypedPropertyDescriptor<() => Promise<void>>) => void | TypedPropertyDescriptor<() => Promise<void>> {
+    throw new Error("Function not implemented.");
+}