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<?php

namespace BaseModule;

/**
 * Basic presenter for displaying and manipulating RSS feed
 */
class RssPresenter extends BasePresenter {

    /**
     * @var \BaseModule\Services\DbService db service
     * @Inject
     */
    protected $dbService;

    /**
     * Id of currently edited record
     * @var int
     * @persistent int */
    public $id;

    /**
     * Currently edited record
     * @var object */
    private $record;

    /**
     * RSS feed view
     */
    public function actionView() {
        $this->template->items = $this->dbService->getRssData();
    }

    /**
     * RSS feed update view
     */
    public function actionUpdate() {
        $this->checkLogin();

        $this->template->items = $this->dbService->getRssData();
    }

    /**
     * Add new RSS record
     */
    public function actionAdd() {
        $this->id = null;
        $this->record = null;
    }

    /**
     * Edit existing record
     *
     * @param int $id id of record to edit
     * @throws BadRequestException
     */
    public function actionEdit($id) {
        $this->checkLogin();

        // load record from Database
        $this->record = $this->dbService->findRssById($id);

        if (!$this->record) { // check whether record exists
            throw new BadRequestException;
        }

        $this['rssForm']->setDefaults($this->record); // set defaults
        $this->setView('add');
    }

    /**
     * Deletes RSS record
     *
     * @param int $id record id
     */
    public function actionDelete($id) {
        $this->checkLogin();

        $this->dbService->deleteRss($id);
        $this->flashMessage('RSS record was deleted', 'success');
        $this->redirect('Rss:update');
    }

    /**
     * Sign in form processing
     *
     * @param \BaseModule\Form $form form sent
     */
    public function signInFormSucceeded($form) {
        $values = $form->getValues();

        try {
            $this->getUser()->login($values->username, $values->password);
            $this->redirect('Rss:update');
        } catch (\Nette\Security\AuthenticationException $e) {
            $form->addError($e->getMessage());
        }
    }

    /**
     * Edit/Add RSS record form processing
     *
     * @param \BaseModule\Form $form form sent
     */
    public function rssFormSubmitted($form) {
        $this->checkLogin();

        $values = $form->getValues();

        if ($this->id) {
            $this->dbService->updateRss($values, $this->id);
            $this->flashMessage('RSS news was updated.', 'success');
            $this->id = null;
            $this->record = null;
        } else {
            $this->dbService->insertRss($values);
            $this->flashMessage('RSS news was inserted.', 'success');
        }
        $this->redirect('Rss:update');
    }

    /**
     * Sign-in form
     * 
     * @return \BaseModule\Form
     */
    protected function createComponentSignInForm() {
        $form = new \BaseModule\Form;
        $form->addText('username', 'Username:')
                ->setRequired('Username cannot be blank.');
        $form->addPassword('password', 'Password:')
                ->setRequired('Password cannot be blank.');

        $form->addSubmit('send', 'Sign in');

        // call method signInFormSucceeded() on success
        $form->onSuccess[] = $this->signInFormSucceeded;
        return $form;
    }

    /**
     * RSS record add/edit form
     *
     * @return \BaseModule\Form
     */
    protected function createComponentRssForm() {
        $form = new \BaseModule\Form();
        $form->addText('title', 'Title:', 40)
                ->addRule(\BaseModule\Form::FILLED, 'Title cannot be blank.');
        $form->addTextArea('description', 'Description:', 50, 5);
        $form->addText('published', 'Published:')->setDefaultValue(date('Y-m-d H:m'));
        $form->addText('link', 'Link:');

        $form->addSubmit('save', 'Save');
        $form->onSuccess[] = $this->rssFormSubmitted;
        return $form;
    }

    /**
     * Logs user out
     */
    public function actionOut() {
        $this->getUser()->logout(true);
        $this->flashMessage('You were logged out successfully.');
        $this->redirect(':Base:Homepage:default');
    }

    /**
     * Redirects user to sign-in form, if user is not already logged in
     */
    protected function checkLogin() {
        if (!$this->getUser()->isLoggedIn()) {
            $this->redirect('Rss:sign');
        }
    }

}