<?php

namespace Blog\Controller;

use Blog\Model\EventModel;
use Blog\Model\StandortModel;

class EventController {

    private $model;
    private $view;

    public function __construct($view) {
        $this->model = new EventModel();
        $this->view = $view;
    }

    public function showEvents() {
        $events = $this->model->getEvents();
        $this->view->setVars([
            'events' => $events
        ]);
    }

    public function createEvent() {
        if (!isset($_SESSION['is_admin']) || !$_SESSION['is_admin']) {
            header('Location: index.php?controller=Event&do=showEvents');
            exit;
        }
        $data = [
            'name' => $_POST['name'] ?? '',
            'start_date' => $_POST['start_date'] ?? '',
            'end_date' => $_POST['end_date'] ?? '',
            'location_id' => $_POST['location_id'] ?? '',
            'description' => $_POST['description'] ?? '',
            'max_tickets' => $_POST['max_tickets'] ?? '',
            'ticket_price' => $_POST['ticket_price'] ?? ''
        ];
        $errors = [];
        if (empty($data['name']) || empty($data['start_date']) || empty($data['end_date']) || empty($data['location_id']) || empty($data['description']) || empty($data['max_tickets']) || empty($data['ticket_price'])) {
            $errors['event'] = 'Bitte alle Felder ausfüllen.';
        }
        if (!empty($errors)) {
            $standortModel = new StandortModel();
            $locations = $standortModel->getStandorte();
            $this->view->setVars(['errors' => $errors, 'validData' => $data, 'locations' => $locations]);
            $this->view->setDoMethodName('showCreateEvent');
            return;
        }
        $this->model->createEvent($data);
        $this->view->setDoMethodName('showCreateForwarding');
    }

    public function editEventForm() {
        $id = $_GET['ausstellungid'];
        $event = $this->model->getEvent($id);
        $this->view->setVars(['event' => $event]);
    }

    public function updateEvent() {
        if (!isset($_SESSION['is_admin']) || !$_SESSION['is_admin']) {
            header('Location: index.php?controller=Event&do=showEvents');
            exit;
        }
        $id = $_POST['id'] ?? null;
        $data = [
            'name' => $_POST['name'] ?? '',
            'start_date' => $_POST['start_date'] ?? '',
            'end_date' => $_POST['end_date'] ?? '',
            'location_id' => $_POST['location_id'] ?? '',
            'description' => $_POST['description'] ?? '',
            'max_tickets' => $_POST['max_tickets'] ?? '',
            'ticket_price' => $_POST['ticket_price'] ?? ''
        ];
        $errors = [];
        if (empty($data['name']) || empty($data['start_date']) || empty($data['end_date']) || empty($data['location_id']) || empty($data['description']) || empty($data['max_tickets']) || empty($data['ticket_price'])) {
            $errors['event'] = 'Bitte alle Felder ausfüllen.';
        }
        if (!empty($errors)) {
            $standortModel = new StandortModel();
            $location = $standortModel->getStandort($data['location_id']);
            $eventView = [
                'id' => $id,
                'name' => $data['name'],
                'start_date' => $data['start_date'],
                'end_date' => $data['end_date'],
                'location_id' => $data['location_id'],
                'location_name' => $location['city'] ?? '',
                'description' => $data['description'],
                'max_tickets' => $data['max_tickets'],
                'ticket_price' => $data['ticket_price'],
            ];
            $this->view->setVars(['event' => $eventView, 'errors' => $errors]);
            $this->view->setDoMethodName('showUpdateEvent');
            return;
        }
        $this->model->updateEvent($id, $data);
        $this->view->setDoMethodName('showUpdateForwarding');
    }

    public function deleteEvent() {
        if (!isset($_SESSION['is_admin']) || !$_SESSION['is_admin']) {
            header('Location: index.php?controller=Event&do=showEvents');
            exit;
        }
        $id = $_GET['event_id'] ?? null;
        if ($id) {
            $this->model->deleteEvent($id);
        }
        $this->view->setDoMethodName('deleteEvent');
    }

    public function showUpdateEvent() {
        if (!isset($_SESSION['is_admin']) || !$_SESSION['is_admin']) {
            header('Location: index.php?controller=Event&do=showEvents');
            exit;
        }
        $id = $_GET['event_id'] ?? null;
        if (!$id) {
            $this->view->setVars(['error' => 'Keine Event-ID angegeben.']);
            return;
        }
        $event = $this->model->getEvent($id);
        if (!$event) {
            $this->view->setVars(['error' => 'Event nicht gefunden.']);
            return;
        }
        $standortModel = new StandortModel();
        $location = $standortModel->getStandort($event['location_id']);
        $eventView = [
            'id' => $event['event_id'],
            'name' => $event['name'],
            'start_date' => $event['start_date'],
            'end_date' => $event['end_date'],
            'location_id' => $event['location_id'],
            'location_name' => $location['city'] ?? '',
            'description' => $event['description'],
            'max_tickets' => $event['max_tickets'],
            'ticket_price' => $event['ticket_price'],
        ];
        $this->view->setVars(['event' => $eventView, 'errors' => []]);
    }

    public function showCreateEvent() {
        if (!isset($_SESSION['is_admin']) || !$_SESSION['is_admin']) {
            header('Location: index.php?controller=Event&do=showEvents');
            exit;
        }
        $standortModel = new StandortModel();
        $locations = $standortModel->getStandorte();
        $this->view->setVars([
            'locations' => $locations,
            'errors' => [],
            'validData' => []
        ]);
    }
}