BE/src/mail/mail.module.ts

import { Module } from '@nestjs/common';
import { ConfigModule, ConfigService } from '@nestjs/config';
import { join } from 'path';
import * as Joi from 'joi';
import { MailService } from './mail.service';
import * as nodemailer from 'nodemailer';

@Module({
    imports: [
        ConfigModule.forRoot({
            isGlobal: true,
            validationSchema: Joi.object({
                MAIL_USER: Joi.string().required(),
                MAIL_PASS: Joi.string().required(),
            }),
        }),
    ],

    providers: [
        {
            provide: 'MAIL_TRANSPORTER',
            useFactory: async (configService: ConfigService) => {
                return nodemailer.createTransport(
                    {
                        // service: "gmail",
                        host: 'smtp.gmail.com',
                        port: 587,
                        secure: false,
                        auth: {
                            user: configService.get<string>('MAIL_USER'),
                            pass: configService.get<string>('MAIL_PASS'),
                        },
                    },
                    {
                        from: `"Carnet APP" <${configService.get<string>('MAIL_USER')}>`,
                    }
                );
            },
            inject: [ConfigService],
        },
        MailService,
    ],
    exports: [MailService],


})

export class MailModule { }