class.ilPDNewsBlockGUI.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once("Services/News/classes/class.ilNewsForContextBlockGUI.php");

class ilPDNewsBlockGUI extends ilNewsForContextBlockGUI
{
    public static $block_type = "pdnews";
    public static $st_data;
    protected $acc_results = false;
    
    public function __construct()
    {
        global $DIC;

        $this->lng = $DIC->language();
        $this->user = $DIC->user();
        $this->access = $DIC->access();
        $this->ctrl = $DIC->ctrl();
        $this->settings = $DIC->settings();
        $lng = $DIC->language();
        $ilUser = $DIC->user();
        $ilAccess = $DIC->access();

        // NOT ilNewsForContextBlockGUI::__construct() !
        ilBlockGUI::__construct();
        
        $lng->loadLanguageModule("news");
        include_once("./Services/News/classes/class.ilNewsItem.php");

        $this->setLimit(5);
        $this->setAvailableDetailLevels(3);

        $this->dynamic = false;

        include_once("./Services/News/classes/class.ilNewsCache.php");
        $this->acache = new ilNewsCache();
        $cres = unserialize($this->acache->getEntry($ilUser->getId() . ":0"));
        $this->cache_hit = false;
        if ($this->acache->getLastAccessStatus() == "hit" && is_array($cres)) {
            self::$st_data = ilNewsItem::prepareNewsDataFromCache($cres);
            ;
            $this->cache_hit = true;
        }

        if ($this->getDynamic() && !$this->cache_hit) {
            $this->dynamic = true;
            $data = array();
        } elseif ($this->getCurrentDetailLevel() > 0) {
            // do not ask two times for the data (e.g. if user displays a
            // single item on the personal desktop and the news block is
            // displayed at the same time)
            if (empty(self::$st_data)) {
                self::$st_data = $this->getNewsData();
                $data = self::$st_data;
            } else {
                $data = self::$st_data;
            }
        } else {
            $data = array();
        }
        
        $this->setTitle($lng->txt("news_internal_news"));
        $this->setRowTemplate("tpl.block_row_news_for_context.html", "Services/News");
        
        $this->setData($data);
        
        $this->handleView();
        
        // reset access check results
        $ilAccess->setResults($this->acc_results);
    }
    
    public function getNewsData()
    {
        $ilUser = $this->user;

        include_once("./Services/News/classes/class.ilNewsCache.php");
        $this->acache = new ilNewsCache();
        
        $per = ilNewsItem::_lookupUserPDPeriod($ilUser->getId());
        $data = ilNewsItem::_getNewsItemsOfUser(
            $ilUser->getId(),
            false,
            false,
            $per
        );

        $this->acache->storeEntry(
            $ilUser->getId() . ":0",
            serialize($data)
        );

        return $data;
    }
    
    public static function getBlockType()
    {
        return self::$block_type;
    }
    
    public static function isRepositoryObject()
    {
        return false;
    }

    public static function getScreenMode()
    {
        global $DIC;

        $ilCtrl = $DIC->ctrl();
        
        $cmd = $_GET["cmd"];
        if ($cmd == "post" && is_array($_POST["cmd"])) {
            $cmd = array_pop(array_keys($_POST["cmd"]));
        }
        
        switch ($cmd) {
            case "showNews":
            case "showFeedUrl":
            case "editSettings":
            case "changeFeedSettings":
                return IL_SCREEN_CENTER;
            
            default:
                return IL_SCREEN_SIDE;
        }
    }

    public function executeCommand()
    {
        $ilCtrl = $this->ctrl;

        $next_class = $ilCtrl->getNextClass();
        $cmd = $ilCtrl->getCmd("getHTML");

        switch ($next_class) {
            default:
                return $this->$cmd();
        }
    }

    public function fillDataSection()
    {
        if ($this->dynamic) {
            $this->setDataSection($this->getDynamicReload());
        } elseif ($this->getCurrentDetailLevel() > 1 && count($this->getData()) > 0) {
            parent::fillDataSection();
        } else {
            $this->setEnableNumInfo(false);
            if (count($this->getData()) == 0) {
                $this->setEnableDetailRow(false);
            }
            $this->setDataSection($this->getOverview());
        }
    }

    public function getHTML()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        $ilUser = $this->user;
        
        // set footer info
        $this->setFooterInfo($lng->txt("news_block_information"), true);
        
        $news_set = new ilSetting("news");
        $enable_internal_rss = $news_set->get("enable_rss_for_internal");
        $allow_shorter_periods = $news_set->get("allow_shorter_periods");
        $allow_longer_periods = $news_set->get("allow_longer_periods");
        $enable_private_feed = $news_set->get("enable_private_feed");

        // subscribe/unsibscribe link
        include_once("./Services/News/classes/class.ilNewsSubscription.php");
        
        // show feed url
        if ($enable_internal_rss) {
            include_once("./Services/News/classes/class.ilRSSButtonGUI.php");
            $this->addBlockCommand(
                $ilCtrl->getLinkTarget($this, "showFeedUrl"),
                $lng->txt("news_get_feed_url"),
                "",
                "",
                true,
                false,
                ilRSSButtonGUI::get(ilRSSButtonGUI::ICON_RSS)
            );
        }

        if ($allow_shorter_periods || $allow_longer_periods || $enable_private_feed) {
            $this->addBlockCommand(
                $ilCtrl->getLinkTarget($this, "editSettings"),
                $lng->txt("settings")
            );
        }
            
        $per = ilNewsItem::_lookupUserPDPeriod($ilUser->getId());

        if ($per > 0) {
            switch ($per) {
                case 2:
                case 3:
                case 5: $per_str = sprintf($lng->txt("news_period_x_days"), $per); break;
                case 7: $per_str = $lng->txt("news_period_1_week"); break;
                case 14: $per_str = sprintf($lng->txt("news_period_x_weeks"), 2); break;
                case 30: $per_str = $lng->txt("news_period_1_month"); break;
                case 60: $per_str = sprintf($lng->txt("news_period_x_months"), 2); break;
                case 120: $per_str = sprintf($lng->txt("news_period_x_months"), 4); break;
                case 180: $per_str = sprintf($lng->txt("news_period_x_months"), 6); break;
                case 366: $per_str = $lng->txt("news_period_1_year"); break;
            }
            if ($per_str != "") {
                $this->setTitle($this->getTitle() . ' <span style="font-weight:normal;">- ' . $per_str . "</span>");
            }
        }

        if ($this->getCurrentDetailLevel() == 0) {
            return "";
        }

        $en = "";
        if ($ilUser->getPref("il_feed_js") == "n") {
            $en = $this->getJSEnabler();
        }

        return ilBlockGUI::getHTML() . $en;
    }
    

    public function showFeedUrl()
    {
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;
        $ilUser = $this->user;
        $ilSetting = $this->settings;

        $news_set = new ilSetting("news");
        
        
        include_once("./Services/News/classes/class.ilNewsItem.php");

        if ($news_set->get("enable_private_feed")) {
            $tpl = new ilTemplate("tpl.show_priv_feed_url.html", true, true, "Services/News");

            $tpl->setVariable("TXT_PRIV_TITLE", $lng->txt("news_get_priv_feed_title"));
            
            // #14365
            if ($ilUser->_getFeedPass($GLOBALS['DIC']['ilUser']->getId())) {
                $tpl->setVariable("TXT_PRIV_INFO", $lng->txt("news_get_priv_feed_info"));
                $tpl->setVariable("TXT_PRIV_FEED_URL", $lng->txt("news_feed_url"));
                $tpl->setVariable(
                    "VAL_PRIV_FEED_URL",
                    str_replace("://", "://" . $ilUser->getLogin() . ":-password-@", ILIAS_HTTP_PATH) . "/privfeed.php?client_id=" . rawurlencode(CLIENT_ID) . "&user_id=" . $ilUser->getId() .
                        "&hash=" . ilObjUser::_lookupFeedHash($ilUser->getId(), true)
                );
                $tpl->setVariable(
                    "VAL_PRIV_FEED_URL_TXT",
                    str_replace("://", "://" . $ilUser->getLogin() . ":-password-@", ILIAS_HTTP_PATH) . "/privfeed.php?client_id=" . rawurlencode(CLIENT_ID) . "&<br />user_id=" . $ilUser->getId() .
                        "&hash=" . ilObjUser::_lookupFeedHash($ilUser->getId(), true)
                );
            } else {
                $tpl->setVariable("TXT_PRIV_INFO", $lng->txt("news_inactive_private_feed_info"));
                $tpl->setVariable("EDIT_SETTINGS_URL", $ilCtrl->getLinkTarget($this, "editSettings"));
                $tpl->setVariable("EDIT_SETTINGS_TXT", $lng->txt("news_edit_news_settings"));
            }
        } else {
            $tpl = new ilTemplate("tpl.show_feed_url.html", true, true, "Services/News");
        }
        $tpl->setVariable("TXT_TITLE", $lng->txt("news_get_feed_title"));
        $tpl->setVariable("TXT_INFO", $lng->txt("news_get_feed_info"));
        $tpl->setVariable("TXT_FEED_URL", $lng->txt("news_feed_url"));
        $tpl->setVariable(
            "VAL_FEED_URL",
            ILIAS_HTTP_PATH . "/feed.php?client_id=" . rawurlencode(CLIENT_ID) . "&user_id=" . $ilUser->getId() .
                "&hash=" . ilObjUser::_lookupFeedHash($ilUser->getId(), true)
        );
        $tpl->setVariable(
            "VAL_FEED_URL_TXT",
            ILIAS_HTTP_PATH . "/feed.php?client_id=" . rawurlencode(CLIENT_ID) . "&<br />user_id=" . $ilUser->getId() .
                "&hash=" . ilObjUser::_lookupFeedHash($ilUser->getId(), true)
        );
        
        include_once("./Services/PersonalDesktop/classes/class.ilPDContentBlockGUI.php");
        $content_block = new ilPDContentBlockGUI();
        $content_block->setContent($tpl->get());
        $content_block->setTitle($lng->txt("news_internal_news"));
        $content_block->addHeaderCommand(
            $ilCtrl->getParentReturn($this),
            $lng->txt("selected_items_back")
        );

        return $content_block->getHTML();
    }

    public function addCloseCommand($a_content_block)
    {
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;
        
        $a_content_block->addHeaderCommand(
            $ilCtrl->getParentReturn($this),
            $lng->txt("selected_items_back")
        );
    }

    
    public function showNews()
    {
        // workaround for dynamic mode (if cache is disabled, showNews has no data)
        //              if (empty(self::$st_data))
        //              {
        //                      $this->setData($this->getNewsData());
        //              }

        return parent::showNews();
    }

    public function editSettings(ilPropertyFormGUI $a_private_form = null)
    {
        $ilUser = $this->user;
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;
        $ilSetting = $this->settings;
        
        $news_set = new ilSetting("news");
        $enable_internal_rss = $news_set->get("enable_rss_for_internal");
        $allow_shorter_periods = $news_set->get("allow_shorter_periods");
        $allow_longer_periods = $news_set->get("allow_longer_periods");
        $enable_private_feed = $news_set->get("enable_private_feed");
    
        if (!$a_private_form && ($allow_shorter_periods || $allow_longer_periods)) {
            include_once("./Services/Form/classes/class.ilPropertyFormGUI.php");
            $form = new ilPropertyFormGUI();
            $form->setFormAction($ilCtrl->getFormaction($this));
            $form->setTitle($lng->txt("news_settings"));

            include_once("./Services/News/classes/class.ilNewsItem.php");
            $default_per = ilNewsItem::_lookupDefaultPDPeriod();
            $per = ilNewsItem::_lookupUserPDPeriod($ilUser->getId());

            $form->setTableWidth("100%");

            $per_opts = array(
                2 => "2 " . $lng->txt("days"),
                3 => "3 " . $lng->txt("days"),
                5 => "5 " . $lng->txt("days"),
                7 => "1 " . $lng->txt("week"),
                14 => "2 " . $lng->txt("weeks"),
                30 => "1 " . $lng->txt("month"),
                60 => "2 " . $lng->txt("months"),
                120 => "4 " . $lng->txt("months"),
                180 => "6 " . $lng->txt("months"),
                366 =>  "1 " . $lng->txt("year"));

            $unset = array();
            foreach ($per_opts as $k => $opt) {
                if (!$allow_shorter_periods && ($k < $default_per)) {
                    $unset[$k] = $k;
                }
                if (!$allow_longer_periods && ($k > $default_per)) {
                    $unset[$k] = $k;
                }
            }
            foreach ($unset as $k) {
                unset($per_opts[$k]);
            }

            $per_sel = new ilSelectInputGUI(
                $lng->txt("news_pd_period"),
                "news_pd_period"
            );
            //$per_sel->setInfo($lng->txt("news_pd_period_info"));
            $per_sel->setOptions($per_opts);
            $per_sel->setValue((int) $per);
            $form->addItem($per_sel);
        
            //$form->addCheckboxProperty($lng->txt("news_public_feed"), "notifications_public_feed",
            //  "1", $public_feed, $lng->txt("news_public_feed_info"));
            //if ($this->getProperty("public_notifications_option"))
            //{
            //  $form->addCheckboxProperty($lng->txt("news_notifications_public"), "notifications_public",
            //          "1", $public, $lng->txt("news_notifications_public_info"));
            //}
            $form->addCommandButton("saveSettings", $lng->txt("save"));
            $form->addCommandButton("cancelSettings", $lng->txt("cancel"));
            
            $returnForm = $form->getHTML();
        }

        if ($enable_private_feed) {
            if (!$a_private_form) {
                $a_private_form = $this->initPrivateSettingsForm();
            }
            $returnForm .= ($returnForm=="")
                ? $a_private_form->getHTML()
                : "<br>" . $a_private_form->getHTML();
        }
        
        return $returnForm;
    }
    
    protected function initPrivateSettingsForm()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        $ilUser = $this->user;
        
        include_once("./Services/Form/classes/class.ilPropertyFormGUI.php");
        $feed_form = new ilPropertyFormGUI();
        $feed_form->setFormAction($ilCtrl->getFormaction($this));
        $feed_form->setTitle($lng->txt("priv_feed_settings"));

        $feed_form->setTableWidth("100%");

        $enable_private_feed = new ilCheckboxInputGUI($lng->txt("news_enable_private_feed"), "enable_private_feed");
        $enable_private_feed->setChecked($ilUser->_getFeedPass($ilUser->getId()));
        $feed_form->addItem($enable_private_feed);

        $passwd = new ilPasswordInputGUI($lng->txt("password"), "desired_password");
        $passwd->setRequired(true);
        $passwd->setInfo(ilUtil::getPasswordRequirementsInfo());
        $enable_private_feed->addSubItem($passwd);

        $feed_form->addCommandButton("changeFeedSettings", $lng->txt("save"));
        $feed_form->addCommandButton("cancelSettings", $lng->txt("cancel"));
        
        return $feed_form;
    }

    public function cancelSettings()
    {
        $ilCtrl = $this->ctrl;
        
        $ilCtrl->returnToParent($this);
    }
    
    public function saveSettings()
    {
        $ilCtrl = $this->ctrl;
        $ilUser = $this->user;
        
        $news_set = new ilSetting("news");
        $enable_internal_rss = $news_set->get("enable_rss_for_internal");
        
        ilBlockSetting::_write(
            $this->getBlockType(),
            "news_pd_period",
            $_POST["news_pd_period"],
            $ilUser->getId(),
            $this->block_id
        );
        
        include_once("./Services/News/classes/class.ilNewsCache.php");
        $cache = new ilNewsCache();
        $cache->deleteEntry($ilUser->getId() . ":0");
            
        $ilCtrl->returnToParent($this);
    }

    public function changeFeedSettings()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        $ilUser = $this->user;
        
        $form = $this->initPrivateSettingsForm();
        if ($form->checkInput()) {
            // Deactivate private Feed - just delete the password
            if (!$form->getInput("enable_private_feed")) {
                $ilUser->_setFeedPass($ilUser->getId(), "");
                ilUtil::sendSuccess($lng->txt("priv_feed_disabled"), true);
                // $ilCtrl->returnToParent($this);
                $ilCtrl->redirect($this, "showFeedUrl");
            } else {
                $passwd = $form->getInput("desired_password");
                require_once 'Services/User/classes/class.ilUserPasswordManager.php';
                if (ilUserPasswordManager::getInstance()->verifyPassword($ilUser, $passwd)) {
                    $form->getItemByPostVar("desired_password")->setAlert($lng->txt("passwd_equals_ilpasswd"));
                    ilUtil::sendFailure($lng->txt("form_input_not_valid"));
                } else {
                    $ilUser->_setFeedPass($ilUser->getId(), $passwd);
                    ilUtil::sendSuccess($lng->txt("saved_successfully"), true);
                    // $ilCtrl->returnToParent($this);
                    $ilCtrl->redirect($this, "showFeedUrl");
                }
            }
        }
        
        $form->setValuesByPost();
        return $this->editSettings($form);
    }
}