bcrypt module y service final

src/bcrypt/bcrypt.module.ts

@@ -1,8 +1,5 @@
 import { Module } from '@nestjs/common';
 import { BcryptService } from './bcrypt.service';
 
-@Module({
-  providers: [BcryptService],
-  exports: [BcryptService],
-})
+@Module({ providers: [BcryptService], exports: [BcryptService] })
 export class BcryptModule {}

src/bcrypt/bcrypt.service.ts

@@ -4,27 +4,32 @@ import { ConfigService } from '@nestjs/config';
 
 @Injectable()
 export class BcryptService {
-  constructor(private configService: ConfigService) {}
+  private salt: string;
+  private passwordLength: number;
 
-  comparar(password: string, passwordDb: string) {
+  constructor(private configService: ConfigService) {
+    this.salt = bcrypt.genSaltSync(
+      parseInt(this.configService.get<string>('SALT_ROUNDS')),
+    );
+    this.passwordLength = parseInt(
+      this.configService.get<string>('PASSWORD_LENGTH'),
+    );
+  }
+
+  comparar(password: string, passwordDb: string): boolean {
     return bcrypt.compareSync(password, passwordDb);
   }
 
-  encriptar(password: string) {
-    const salt = bcrypt.genSaltSync(
-      parseInt(this.configService.get<string>('SALT_ROUNDS')),
-    );
-
-    return bcrypt.hashSync(password, salt);
+  encriptar(password: string): string {
+    return bcrypt.hashSync(password, this.salt);
   }
 
-  generarPassword = () => {
-    const length = 10;
+  generarPassword = (): string => {
     const charset =
       'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+-@#$%&=?¿*()/_-';
     let password = '';
 
-    for (let i = 0; i < length; i++)
+    for (let i = 0; i < this.passwordLength; i++)
       password += charset.charAt(Math.floor(Math.random() * charset.length));
     return password;
   };