source: src/main/java/project/fmo/app/projcetfmo/Web/LoginController.java

package project.fmo.app.projcetfmo.Web;


import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import project.fmo.app.projcetfmo.Model.Korisnik;
import project.fmo.app.projcetfmo.Model.exception.InvalidUserCredentialsException;
import project.fmo.app.projcetfmo.Service.AuthService;

import javax.servlet.http.HttpServletRequest;

@Controller
@RequestMapping("/login")
public class LoginController {

    private final AuthService authService;

    public LoginController(AuthService authService) {
        this.authService = authService;
    }

    @GetMapping
    public String getLoginPage(Model model) {
        model.addAttribute("bodyContent","login");
        return "master-template";
    }

    @PostMapping
    public String login(HttpServletRequest request, Model model) {
        Korisnik user = null;
        try{
            user = this.authService.login(request.getParameter("username"),
                    request.getParameter("password"));
            request.getSession().setAttribute("user", user);
            return "redirect:/home";
        }
        catch (InvalidUserCredentialsException exception) {
            model.addAttribute("hasError", true);
            model.addAttribute("error", exception.getMessage());
            return "login";
        }
    }
}