import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, ReactiveFormsModule, Validators } from '@angular/forms';
import { AuthService } from '../../../services/auth/auth.service';
import { Router, RouterModule } from '@angular/router';
import { NgIf } from '@angular/common';

@Component({
  selector: 'app-login',
  standalone: true,
  imports: [NgIf, RouterModule, ReactiveFormsModule],
  templateUrl: './login.component.html',
  styleUrl: './login.component.css'
})
export class LoginComponent implements OnInit {
  loginForm!: FormGroup;
  errorMessage: string = '';
  isLoading: boolean = false;

  constructor(
    private formBuilder: FormBuilder,
    private authService: AuthService,
    private router: Router
  ) { }

  ngOnInit(): void {
    // Redirect if already logged in
    if (this.authService.isAuthenticated()) {
      this.router.navigate(['/dashboard']);
    }

    this.loginForm = this.formBuilder.group({
      username: ['', [Validators.required]],
      password: ['', [Validators.required, Validators.minLength(6)]]
    });
  }

  onSubmit(): void {
    if (this.loginForm.invalid) {
      return;
    }

    this.isLoading = true;
    this.errorMessage = '';

    const { username, password } = this.loginForm.value;

    this.authService.login(username, password).subscribe({
      next: (response) => {
        this.isLoading = false;
        this.router.navigate(['/dashboard']);
      },
      error: (error) => {
        this.isLoading = false;
        this.errorMessage = error.error?.message || 'Login failed. Please check your credentials.';
      }
    });
  }
}