add error handling for db calls

src/modules/auth/use-cases/send-password-recovery-email-use-case.ts

@@ -0,0 +1,40 @@
+import { CommandHandler, ICommandHandler } from '@nestjs/cqrs'
+import { NotFoundException } from '@nestjs/common'
+import { UsersRepository } from '../../users/infrastructure/users.repository'
+import { UsersService } from '../../users/services/users.service'
+import { v4 as uuidv4 } from 'uuid'
+
+export class SendPasswordRecoveryEmailCommand {
+  constructor(public readonly email: string) {}
+}
+
+@CommandHandler(SendPasswordRecoveryEmailCommand)
+export class SendPasswordRecoveryEmailHandler
+  implements ICommandHandler<SendPasswordRecoveryEmailCommand>
+{
+  constructor(
+    private readonly usersRepository: UsersRepository,
+    private readonly usersService: UsersService
+  ) {}
+
+  async execute(command: SendPasswordRecoveryEmailCommand) {
+    const user = await this.usersRepository.findUserByEmail(command.email)
+
+    if (!user) {
+      throw new NotFoundException('User not found')
+    }
+    const token = uuidv4()
+    const updatedUser = await this.usersRepository.createPasswordResetToken(user.id, token)
+
+    await this.usersService.sendPasswordRecoveryEmail({
+      email: updatedUser.user.email,
+      name: updatedUser.user.name,
+      passwordRecoveryToken: updatedUser.resetPasswordToken,
+    })
+    if (!updatedUser) {
+      throw new NotFoundException('User not found')
+    }
+
+    return null
+  }
+}