azine / email-bundle

Services/TemplateProviderInterface.php

<?php

namespace Azine\EmailBundle\Services;

/**
 * Interface with methods required by the AzineEmailBundle to render the email-content in nice templates.
 *
 * @author dominik
 */
interface TemplateProviderInterface
{
    /**
     * Add all styles and variables that are required to render the layout of the html-email-template.
     *
     * @param string $template         the twig template for the email to render (template id in standard-notation, without the ending ( .txt.twig) => "AcmeFooBundle:bar:default")
     * @param array  $contentVariables array with variables required to render the content in the email
     *
     * @return array of merged template- and content-vars. Variables in the supplied array will NOT be replaced by newly added ones.
     */
    public function addTemplateVariablesFor($template, array $contentVariables);

    /**
     * Add template blocks that refer to images encoded in the email to the supplied array.
     * This function will be called AFTER the images have been embeded, so you can define vars that include embede images => e.g. see variable "cellSeparator" in class AzineTemplateProvider.
     *
     * @param string $template    the twig template for the email to render (template id in standard-notation, without the ending ( .txt.twig) => "AcmeFooBundle:bar:default")
     * @param array  $vars
     * @param string $emailLocale the locale to be used for translations for this single email
     * @param bool   $forWebView
     *
     * @return array of merged template-vars. Variables in the supplied array WILL BE replaced by newly added ones, if the use the same key.
     */
    public function addTemplateSnippetsWithImagesFor($template, array $vars, $emailLocale, $forWebView = false);

    /**
     * Just before sending the message, extra custom headers can be added to the message.
     *
     * @param string         $template
     * @param \Swift_Message $message
     * @param array          $params
     *
     * @return array of \Swift_Mime_Header
     */
    public function addCustomHeaders($template, \Swift_Message $message, array $params);

    /**
     * Get the absolute filesystem path to the folder where  the template-images are stored.
     *
     * @return string
     */
    public function getTemplateImageDir();

    /**
     * Recursively replace all absolute image paths in the $emailVars array with relative web urls.
     *
     * @see \Azine\EmailBundle\Services\AzineTemplateProvider::makeImagePathsWebRelative for a reference implementation
     *
     * @param array $emailVars
     * @param $locale
     *
     * @return mixed emailVars-array with relative paths for images
     */
    public function makeImagePathsWebRelative(array $emailVars, $locale);

    /**
     * Check if an image that should be embeded into an email is stored in an "allowed_images_folder" see config.yml.
     *
     * @param string the filesystem path to the file

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     * @param string $filePath
     */
    public function isFileAllowed($filePath);

    /**
     * Get the filesystem-folder for the given key.
     *
     * @param $key
     *
     * @return string|bool the filesystem-folder or false
     */
    public function getFolderFrom($key);

    /**
     * Define for which emails you want to make the web-view available and for which not.
     *
     * @param string $template the template id in standard-notation, without the ending ( .txt.twig) => "AcmeFooBundle:bar:default"
     *
     * @return bool
     */
    public function saveWebViewFor($template);

    /**
     * Get the id of the webViewToken. You only have to implement this method if your TemplateProvider
     * doesn't extend the AzineTemplateProvider or if you wan't to change the ID from "azineEmailWebViewToken"
     * to something else.
     *
     * This ID is used in the AzineEmailBundle::baseEmailLayout.html.twig to show a link to the web-view.
     *
     * @return string
     */
    public function getWebViewTokenId();

    /**
     * Get the url-query-parameters for campaign identification.
     * If you work with GoogleAnalytics take a look at this page: https://support.google.com/analytics/answer/1033867.
     *
     * @param string $templateId the template id in standard-notation, without the ending ( .txt.twig) => "AcmeFooBundle:bar:default"
     * @param array  $params     campaing parameters already loaded
     *
     * @return array of (string => string)
     */
    public function getCampaignParamsFor($templateId, array $params = null);
}