feat: local strategy for passport

back/src/auth/local-auth.guard.ts

@@ -0,0 +1,6 @@
+
+import { Injectable } from '@nestjs/common';
+import { AuthGuard } from '@nestjs/passport';
+
+@Injectable()
+export class LocalAuthGuard extends AuthGuard('local') {}

back/src/auth/local.strategy.ts

@@ -0,0 +1,21 @@
+
+import { Strategy } from 'passport-local';
+import { PassportStrategy } from '@nestjs/passport';
+import { Injectable, UnauthorizedException } from '@nestjs/common';
+import { AuthService } from './auth.service';
+import PayloadInterface from './interface/payload.interface';
+
+@Injectable()
+export class LocalStrategy extends PassportStrategy(Strategy) {
+  constructor(private authService: AuthService) {
+    super();
+  }
+
+  async validate(username: string, password: string): Promise<PayloadInterface> {
+    const user = await this.authService.validateUser(username, password);
+    if (!user) {
+      throw new UnauthorizedException();
+    }
+    return user;
+  }
+}