package com.ieslamar.GestionInventario.controllers;


import com.ieslamar.GestionInventario.dto.BotonDTO;
import com.ieslamar.GestionInventario.entities.User;
import com.ieslamar.GestionInventario.services.DepartamentoService;
import com.ieslamar.GestionInventario.services.UserService;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
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.RequestParam;
import org.springframework.security.core.GrantedAuthority;

import java.util.ArrayList;


import java.util.List;
import java.util.Map;

@Controller
public class UserController {


    private final UserService userService;
    private final DepartamentoService departamentoService;

    public UserController(UserService userService, DepartamentoService departamentoService) {
        this.userService = userService;
        this.departamentoService = departamentoService;
    }

    private final BotonDTO gestionUsuarios = new BotonDTO("Gestión de usuarios", "/user_list", true, null);
    private final BotonDTO gestionProductos = new BotonDTO("Gestión de Productos", "/user_management", true, null);
    private final BotonDTO gestionDepartamentos = new BotonDTO("Gestión de Departamentos", "/departamento_list", true, null);
    private final BotonDTO gestionCategorias = new BotonDTO("Gestión de Categorías", "/user_management", true, null);
    private final BotonDTO gestionUbicaciones = new BotonDTO("Gestión de Ubicaciones", "/user_management", true, null);
    private final BotonDTO gestionInventario = new BotonDTO("Gestión de Inventario", "/user_management", true, null);
    private final BotonDTO gestionTiposDatos = new BotonDTO("Gestión de Tipos de dato", "/user_management", true, null);

    private final BotonDTO inventario = new BotonDTO("Inventario", "/management", false, null);
    private final BotonDTO gestion = new BotonDTO("Gestión", "/management", true, null);

    private final BotonDTO home = new BotonDTO("Salir", "/home", false, "button_salir");




    private List<BotonDTO> filtrarBotones(Authentication auth,List<BotonDTO> botones){
        List<BotonDTO> botones_response = new ArrayList<>();
        List<String> roles = auth.getAuthorities()
                         .stream()
                         .map(GrantedAuthority::getAuthority)
                         .toList();
        if (roles.contains("ROLE_ADMIN")) {
            return botones;
        }
        for (BotonDTO botone : botones) {
            if (!botone.isRequireAdmin()) {
                botones_response.add(botone);
            }
        }
        return botones_response;
    }



    @GetMapping("/login")
    public String loginPage() {
        return "login";  // Retorna la vista login.html
    }

    @GetMapping("/home")
    public String homePage(Model model) {
        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
        List<BotonDTO> botones = filtrarBotones(auth,new ArrayList<>(List.of(
                inventario,
                gestion
        )));
        model.addAttribute("buttons", botones);
        return "home";
    }

    @GetMapping("/management")
    public String managementPage(Model model){
        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
        List<BotonDTO>botones =  filtrarBotones(auth,new ArrayList<>(List.of(
                gestionUsuarios,
                gestionProductos,
                gestionDepartamentos,
                gestionCategorias,
                gestionUbicaciones,
                gestionInventario,
                gestionCategorias,
                gestionTiposDatos,
                home
        )));
        model.addAttribute("buttons", botones);
        return "management";
    }


    @GetMapping("/register")
    public String registerPage() {
        return "register";  // Retorna la vista register.html
    }

    @PostMapping("/register")
    public String register(@RequestParam String username, @RequestParam String password, @RequestParam String role, @RequestParam String mail) {
        userService.registerUser(username, password, role, mail, null);
        return "redirect:/user_list";  // Redirige al login tras registrarse
    }


    @PostMapping("/delete_user")
    public String deleteUser(@RequestParam("id") Long id) {
        User user = userService.getUserById(id);
        userService.deleteUser(user); // Llama al servicio para eliminar el usuario
        return "redirect:/user_list"; // Redirige a la página de gestión de usuarios
    }


    @GetMapping("/user_list")
    public String genericPage(Model model) {
        model.addAttribute("title", "Gestión de usuarios");
        model.addAttribute("headers", List.of("ID", "Nombre", "Rol", "Email", "Acciones"));
        model.addAttribute("items", userService.getAllUsers().stream()
            .map(user -> Map.of(
                "id", user.getId(),
                "values", List.of(user.getId(), user.getNombre(), user.getRole(), user.getMail())
            ))
            .toList());
        model.addAttribute("actionsUrl", Map.of(
            "edit", "",
            "delete", "/delete_user"
        ));
        model.addAttribute("backUrl", "/Inventario/home");
        model.addAttribute("addUrl", "/Inventario/register");
        return "list";
    }

    @GetMapping("/departamento_list")
    public String genericPageDepartamento(Model model) {
        model.addAttribute("title", "Gestión Genérica");
        model.addAttribute("headers", List.of("ID", "Nombre","Acciones"));
        model.addAttribute("items", departamentoService.getAllDepartamentos().stream()
            .map(departamento -> Map.of(
                "id", departamento.getId(),
                "values", List.of(departamento.getId(), departamento.getNombre())
            ))
            .toList());
        model.addAttribute("actionsUrl", Map.of(
            "edit", "",
            "delete", ""
        ));
        model.addAttribute("backUrl", "/Inventario/home");
        model.addAttribute("addUrl", "/Inventario/register");
        return "list";
    }


}