<?php

/**
 * @file plugins/generic/epubViewer/EpubViewerPlugin.inc.php
 *
 * Copyright (c) 2010-2023 Lepidus Tecnologia
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class EpubViewerPlugin
 *
 * @brief This plugin enables embedding of ePUB viewer for epub display
 */

import('lib.pkp.classes.plugins.GenericPlugin');

class EpubViewerPlugin extends GenericPlugin
{
    /**
     * @copydoc Plugin::register()
     */
    public function register($category, $path, $mainContextId = null)
    {
        if (parent::register($category, $path, $mainContextId)) {
            if ($this->getEnabled($mainContextId)) {
                HookRegistry::register('ArticleHandler::view::galley', array($this, 'submissionCallback'), HOOK_SEQUENCE_LAST);
                HookRegistry::register('IssueHandler::view::galley', array($this, 'issueCallback'), HOOK_SEQUENCE_LAST);
                HookRegistry::register('CatalogBookHandler::view', array($this, 'viewCallback'), HOOK_SEQUENCE_LATE);
                HookRegistry::register('CatalogBookHandler::download', array($this, 'downloadCallback'), HOOK_SEQUENCE_LATE);
                AppLocale::requireComponents(LOCALE_COMPONENT_APP_COMMON);
            }
            return true;
        }
        return false;
    }

    /**
     * Install default settings on context creation.
     * @return string
     */
    public function getContextSpecificPluginSettingsFile()
    {
        return $this->getPluginPath() . '/settings.xml';
    }

    /**
     * @copydoc Plugin::getDisplayName
     */
    public function getDisplayName()
    {
        return __('plugins.generic.epubViewer.name');
    }

    /**
     * @copydoc Plugin::getDescription
     */
    public function getDescription()
    {
        return __('plugins.generic.epubViewer.description');
    }

    /**
     * Callback that renders the submission galley.
     * @param $hookName string
     * @param $args array
     * @return boolean
     */
    public function submissionCallback($hookName, $args)
    {
        $request = &$args[0];
        $application = Application::get();
        switch ($application->getName()) {
            case 'ojs2':
                $issue = &$args[1];
                $galley = &$args[2];
                $submission = &$args[3];
                $submissionNoun = 'article';
                break;
            default: throw new Exception('Unknown application!');
        }

        if (!$galley) {
            return false;
        }

        $submissionFile = $galley->getFile();
        if ($submissionFile->getData('mimetype') === 'application/epub+zip') {
            $galleyPublication = null;
            foreach ($submission->getData('publications') as $publication) {
                if ($publication->getId() === $galley->getData('publicationId')) {
                    $galleyPublication = $publication;
                    break;
                }
            }
            $templateMgr = TemplateManager::getManager($request);
            $templateMgr->assign(array(
                'displayTemplateResource' => $this->getTemplateResource('display.tpl'),
                'pluginUrl' => $request->getBaseUrl() . '/' . $this->getPluginPath(),
                'galleyFile' => $submissionFile,
                'issue' => $issue,
                'submission' => $submission,
                'submissionNoun' => $submissionNoun,
                'bestId' => $submission->getBestId(),
                'galley' => $galley,
                'currentVersionString' => $application->getCurrentVersion()->getVersionString(false),
                'isLatestPublication' => $submission->getData('currentPublicationId') === $galley->getData('publicationId'),
                'galleyPublication' => $galleyPublication,
            ));
            $templateMgr->display($this->getTemplateResource('submissionGalley.tpl'));
            return true;
        }

        return false;
    }

    public function viewCallback($hookName, $args)
    {
        $submission = &$args[1];
        $publicationFormat = &$args[2];
        $submissionFile = &$args[3];

        if ($submissionFile->getData('mimetype') == 'application/epub+zip') {
            foreach ($submission->getData('publications') as $publication) {
                if ($publication->getId() === $publicationFormat->getData('publicationId')) {
                    $filePublication = $publication;
                    break;
                }
            }
            $request = Application::get()->getRequest();
            $router = $request->getRouter();
            $dispatcher = $request->getDispatcher();
            $templateMgr = TemplateManager::getManager($request);
            $templateMgr->assign(array(
                'pluginUrl' => $request->getBaseUrl() . '/' . $this->getPluginPath(),
                'isLatestPublication' => $submission->getData('currentPublicationId') === $publicationFormat->getData('publicationId'),
                'filePublication' => $filePublication,
            ));

            $templateMgr->display($this->getTemplateResource('display.tpl'));
            return true;
        }

        return false;
    }

    public function downloadCallback($hookName, $params)
    {
        $submission = &$params[1];
        $publicationFormat = &$params[2];
        $submissionFile = &$params[3];
        $inline = &$params[4];

        $request = Application::get()->getRequest();
        $mimetype = $submissionFile->getData('mimetype');
        if ($mimetype == 'application/epub+zip' && $request->getUserVar('inline')) {
            $inline = true;
        }

        return false;
    }

    /**
     * Callback that renders the issue galley.
     * @param $hookName string
     * @param $args array
     * @return boolean
     */
    public function issueCallback($hookName, $args)
    {
        $request = &$args[0];
        $issue = &$args[1];
        $galley = &$args[2];

        $templateMgr = TemplateManager::getManager($request);
        if ($galley && $galley->getFileType() == 'application/epub+zip') {
            $application = Application::get();
            $templateMgr->assign(array(
                'displayTemplateResource' => $this->getTemplateResource('display.tpl'),
                'pluginUrl' => $request->getBaseUrl() . '/' . $this->getPluginPath(),
                'galleyFile' => $galley->getFile(),
                'issue' => $issue,
                'galley' => $galley,
                'currentVersionString' => $application->getCurrentVersion()->getVersionString(false),
                'isLatestPublication' => true,
            ));
            $templateMgr->display($this->getTemplateResource('issueGalley.tpl'));
            return true;
        }

        return false;
    }
}