editview.controller.php

<?php

/**
 * a controller for the play view
 * 
 * @package mod-flashcard
 * @category mod
 * @author Valery Fremaux
 * @author Tomasz Muras
 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
 *
 * @usecase add
 * @usecase delete
 * @usecase save
 * @usecase import
 * @usecase doimport
 */
/* @var $OUTPUT core_renderer */

if (!defined('MOODLE_INTERNAL')) {
    error("Illegal direct access to this screen");
}

/* * ****************************** Add new blank fields **************************** */
if ($action == 'add') {
    $add = required_param('add', PARAM_INT);
    $card->flashcardid = $flashcard->id;
    $users = $DB->get_records_menu('flashcard_card', array('flashcardid' => $flashcard->id), '', 'DISTINCT userid, id');
    for ($i = 0; $i < $add; $i++) {
        if (!$newcardid = $DB->insert_record('flashcard_deckdata', $card)) {
            error("Could not add card to deck");
        }
        if ($users) {
            foreach (array_keys($users) as $userid) {
                $deckcard->flashcardid = $flashcard->id;
                $deckcard->entryid = $newcardid;
                $deckcard->userid = $userid;
                $deckcard->lastaccessed = 0;
                $deckcard->deck = 1;
                $deckcard->accesscount = 0;
                if (!$DB->insert_record('flashcard_card', $deckcard)) {
                    error("Could not bind card to user $userid deck");
                }
            }
        }
    }
}
/* * ****************************** Delete a set of records **************************** */
if ($action == 'delete') {
    $items = required_param('items', PARAM_INT);
    if (is_array($items)) $items = implode(',', $items);
    $items = str_replace(",", "','", $items);

    if (!$DB->delete_records_select('flashcard_deckdata', " id IN ('$items') ")) {
        error("Could not add card to deck");
    }

    if (!$DB->delete_records_select('flashcard_card', " entryid IN ('$items') ")) {
        error("Could not add card to deck");
    }
}
/* * ****************************** Save and update all questions **************************** */
if ($action == 'save') {
    $keys = array_keys($_POST);    // get the key value of all the fields submitted
    $qkeys = preg_grep('/^q/', $keys);   // filter out only the status
    $akeys = preg_grep('/^a/', $keys);   // filter out only the assigned updating

    foreach ($qkeys as $akey) {
        preg_match("/[qi](\d+)/", $akey, $matches);
        $card->id = $matches[1];
        $card->flashcardid = $flashcard->id;
        if ($flashcard->questionsmediatype != FLASHCARD_MEDIA_IMAGE_AND_SOUND) {
            $card->questiontext = required_param("q{$card->id}", PARAM_CLEAN);
        } else {
            // combine image and sound in one single field
            $card->questiontext = required_param("i{$card->id}", PARAM_CLEAN) . '@' . required_param("s{$card->id}",
                            PARAM_CLEAN);
        }
        if ($flashcard->answersmediatype != FLASHCARD_MEDIA_IMAGE_AND_SOUND) {
            $card->answertext = required_param("a{$card->id}", PARAM_CLEAN);
        } else {
            // combine image and sound in one single field
            $card->answertext = required_param("i{$card->id}", PARAM_CLEAN) . '@' . required_param("s{$card->id}",
                            PARAM_CLEAN);
        }
        if (!$DB->update_record('flashcard_deckdata', $card)) {
            error("Could not update deck card");
        }
    }
}
/* * ****************************** Prepare import **************************** */
if ($action == 'import') {
    echo $out;
    include 'import_form.php';
    $mform = new flashcard_import_form($flashcard->id);
    echo $OUTPUT->heading(get_string('importingcards', 'flashcard') . $OUTPUT->help_icon('import', 'flashcard'));
    $mform->display();
    echo $OUTPUT->footer($course);
    exit(0);
}
/* * ****************************** Perform import **************************** */
if ($action == 'doimport') {
    include 'import_form.php';
    $form = new flashcard_import_form($flashcard->id);

    $CARDSEPPATTERNS[0] = ':';
    $CARDSEPPATTERNS[1] = ';';
    $CARDSEPPATTERNS[2] = "\n";
    $CARDSEPPATTERNS[3] = "\r\n";

    $FIELDSEPPATTERNS[0] = ',';
    $FIELDSEPPATTERNS[1] = ':';
    $FIELDSEPPATTERNS[2] = " ";
    $FIELDSEPPATTERNS[3] = "\t";

    if ($data = $form->get_data()) {

        if (!empty($data->confirm)) {

            $cardsep = $CARDSEPPATTERNS[$data->cardsep];
            $fieldsep = $FIELDSEPPATTERNS[$data->fieldsep];

            // filters comments and non significant lines
            $data->import = preg_replace("/^#.*\$/m", '', $data->import);
            $data->import = preg_replace("/^\\/.*\$/m", '', $data->import);
            $data->import = preg_replace('/^\\s+$/m', '', $data->import);
            $data->import = preg_replace("/(\\r?\\n)\\r?\\n/", '$1', $data->import);
            $data->import = trim($data->import);

            $pairs = explode($cardsep, $data->import);
            if (!empty($pairs)) {
                /// first integrity check
                $report->cards = count($pairs);
                $report->badcards = 0;
                $report->goodcards = 0;
                $inputs = array();
                foreach ($pairs as $pair) {
                    if (strstr($pair, $fieldsep) === false) {
                        $report->badcards++;
                    } else {
                        $input = new StdClass;
                        list($input->question, $input->answer) = explode($fieldsep, $pair);
                        if (empty($input->question) || empty($input->answer)) {
                            $report->badcards++;
                        } else {
                            $inputs[] = $input;
                            $report->goodcards++;
                        }
                    }
                }

                if ($report->badcards == 0) {
                    /// everything ok
                    /// reset all data
                    $DB->delete_records('flashcard_card', array('flashcardid' => $flashcard->id));
                    $DB->delete_records('flashcard_deckdata', array('flashcardid' => $flashcard->id));

                    // insert new cards
                    foreach ($inputs as $input) {
                        $deckcard->flashcardid = $flashcard->id;
                        $deckcard->questiontext = $input->question;
                        $deckcard->answertext = $input->answer;
                        $DB->insert_record('flashcard_deckdata', $deckcard);
                    }

                    // reset questionid in flashcard instance
                    $DB->set_field('flashcard', 'questionid', 0, array('id' => $flashcard->id));
                }

                $reportstr = get_string('importreport', 'flashcard') . '<br/>';
                $reportstr = get_string('cardsread', 'flashcard') . $report->cards . '<br/>';
                if ($report->badcards) {
                    $reportstr .= get_string('goodcards', 'flashcard') . $report->goodcards . '<br/>';
                    $reportstr .= get_string('badcards', 'flashcard') . $report->badcards . '<br/>';
                }

                echo "<center>";
                $OUTPUT->box($reportstr, 'reportbox');
                echo "</center>";
            }
        }
    }
}