practice_mvc/Controller.php

<?php

namespace App;

use App\Model\Student;
use App\Model\Languages;
use App\Repository\LanguagesRepository;
use App\Repository\StudentLanguagesRepository;
use App\Repository\StudentRepository;

class Controller
{
    protected $action;

    public function __construct($action)
    {
        $this->action = $action;
    }

    public function execute()
    {
        switch ($this->action) {
            case '':
            case 'main':
                $this->mainAction();
                break;
            case 'index-student':
                $this->indexStudentAction();
                break;
            case 'create-student':
                $this->createStudentAction();
                break;
            case 'view-student':
                $this->viewStudentAction();
                break;
            case 'update-student':
                $this->updateStudentAction();
                break;
            case 'delete-student':
                $this->deleteStudentAction();
                break;
            case 'index-languages':
                $this->indexLanguagesAction();
                break;
            case 'delete-all-languages':
                $this->deleteAllLanguagesAction();
                break;
            case 'create-languages':
                $this->createLanguagesAction();
                break;
            case 'view-languages':
                $this->viewLanguagesAction();
                break;
            case 'update-languages':
                $this->updateLanguagesAction();
                break;
            case 'delete-languages':
                $this->deleteLanguagesAction();
                break;
            default:
                $this->errorAction();
        }
    }

    protected function mainAction()
    {
        require_once('view/main.php');
    }

    protected function errorAction()
    {
        require_once('view/error.php');
        exit();
    }

    protected function indexStudentAction()
    {
        $studentRepository = new StudentRepository();
        $students = $studentRepository->findAll();
        require_once('view/student/index.php');
    }

    protected function viewStudentAction()
    {
        $id = $this->getId();
        $studentRepository = new StudentRepository();
        $student = $studentRepository->findById($id);
        if (!$student) {
            $this->errorAction();
        }
        require_once('view/student/view.php');
    }

    protected function updateStudentAction()
    {
        if ($_SERVER['REQUEST_METHOD'] === 'GET') {
            $id = $this->getId();
            $studentRepository = new StudentRepository();
            $student = $studentRepository->findById($id);
            if (!$student) {
                $this->errorAction();
            }
            $action = 'update';
            require_once('view/student/form.php');
            return;
        }

        $firstName = isset($_POST['firstName']) ? trim($_POST['firstName']) : null;
        $lastName = isset($_POST['lastName']) ? trim($_POST['lastName']) : null;
        $class = isset($_POST['class']) ? trim($_POST['class']) : null;
        $id = isset($_POST['id']) ? trim($_POST['id']) : null;
        $student = new Student($firstName, $lastName, $class, $id);

        if ($student->validate()) {
            $studentRepository = new StudentRepository();
            $studentRepository->update($student);

            header('Location: index.php?action=index-student');
            return;
        }
        $this->errorAction();
    }

    protected function createStudentAction()
    {
        if ($_SERVER['REQUEST_METHOD'] === 'GET') {
            $action = 'create';
            require_once('view/student/form.php');
            return;
        }

        $firstName = isset($_POST['firstName']) ? trim($_POST['firstName']) : null;
        $lastName = isset($_POST['lastName']) ? trim($_POST['lastName']) : null;
        $class = isset($_POST['class']) ? trim($_POST['class']) : null;

        $student = new Student($firstName, $lastName, $class);

        if ($student->validate()) {
            $studentRepository = new StudentRepository();
            $studentRepository->save($student);
        }

        header('Location: index.php?action=index-student');
    }

    protected function deleteStudentAction()
    {
        $id = $this->getId();
        $studentRepository = new StudentRepository();
        $studentRepository->delete($id);
        header('Location: index.php?action=index-student');
    }

    protected function indexLanguagesAction()
    {
        $languagesRepository = new LanguagesRepository();
        $languages = $languagesRepository->findAll();
        require_once('view/languages/index.php');
    }

    protected function viewLanguagesAction()
    {
        $id = $this->getId();
        $languagesRepository = new StudentRepository();
        $languages = $languagesRepository->findById($id);
        if (!$languages) {
            $this->errorAction();
        }
        require_once('view/languages/view.php');
    }

    protected function updateLanguageAction()
    {
        if ($_SERVER['REQUEST_METHOD'] === 'GET') {
            $id = $this->getId();
            $languagesRepository = new LanguagesRepository();
            $languages = $languagesRepository->findById($id);
            if (!$languages) {
                $this->errorAction();
            }
            $action = 'update';
            require_once('view/languages/form.php');
            return;
        }

        $name = isset($_POST['name']) ? trim($_POST['name']) : null;
        $id = isset($_POST['id']) ? trim($_POST['id']) : null;
        $name = new Languages($name, $id);

        if ($languages->validate()) {
            $languagesRepository = new LanguagesRepository();
            $languagesRepository->update($languages);

            header('Location: index.php?action=index-languages');
            return;
        }
        $this->errorAction();
    }

    protected function createLanguagesAction()
    {
        if ($_SERVER['REQUEST_METHOD'] === 'GET') {
            $action = 'create';
            require_once('view/languages/form.php');
            return;
        }

        $name = isset($_POST['name']) ? trim($_POST['name']) : null;


        $languages = new Languages($name);

        if ($languages->validate()) {
            $languagesRepository = new LanguagesRepository();
            $languagesRepository->save($languages);
        }

        header('Location: index.php?action=index-languages');
    }

    protected function deleteLanguagesAction()
    {
        $id = $this->getId();
        $LanguagesRepository = new LanguagesRepository();
        $LanguagesRepository->delete($id);
        header('Location: index.php?action=index-languages');
    }

    protected function getId()
    {
        $id = isset($_GET['id']) ? $_GET['id'] : null;
        if (!empty($id)) {
            return $id;
        }
        $this->errorAction();
    }
}