create use cases for auth

src/modules/auth/use-cases/resend-verification-email-use-case.ts

@@ -0,0 +1,41 @@
+import { CommandHandler, ICommandHandler } from '@nestjs/cqrs'
+import { BadRequestException, NotFoundException } from '@nestjs/common'
+import { UsersRepository } from '../../users/infrastructure/users.repository'
+import { UsersService } from '../../users/services/users.service'
+
+export class ResendVerificationEmailCommand {
+  constructor(public readonly userId: string) {}
+}
+
+@CommandHandler(ResendVerificationEmailCommand)
+export class ResendVerificationEmailHandler
+  implements ICommandHandler<ResendVerificationEmailCommand>
+{
+  constructor(
+    private readonly usersRepository: UsersRepository,
+    private readonly usersService: UsersService
+  ) {}
+
+  async execute(command: ResendVerificationEmailCommand) {
+    const user = await this.usersRepository.findUserById(command.userId)
+    console.log(user)
+    if (!user) {
+      throw new NotFoundException('User not found')
+    }
+    if (user.isEmailVerified) {
+      throw new BadRequestException('Email has already been verified')
+    }
+
+    const updatedUser = await this.usersRepository.updateVerificationToken(user.id)
+    await this.usersService.sendConfirmationEmail({
+      email: updatedUser.user.email,
+      name: updatedUser.user.name,
+      verificationToken: updatedUser.verificationToken,
+    })
+    if (!updatedUser) {
+      throw new NotFoundException('User not found')
+    }
+
+    return null
+  }
+}