<?php
// This file is part of Exabis Eportfolio (extension for Moodle)
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
// (c) 2016 GTN - Global Training Network GmbH <office@gtn-solutions.com>.

defined('MOODLE_INTERNAL') || die();

require_once($CFG->libdir . '/formslib.php');

class block_exaport_comment_edit_form extends block_exaport_moodleform {

    public function definition() {
        global $CFG, $USER, $DB;
        $mform = &$this->_form;

        $this->_form->_attributes['action'] = $_SERVER['REQUEST_URI'];

        $mform->addElement('hidden', 'action');
        $mform->setType('action', PARAM_ACTION);
        $mform->setDefault('action', 'add');

        $mform->addElement('hidden', 'courseid');
        $mform->setType('courseid', PARAM_INT);

        $mform->addElement('hidden', 'itemid');
        $mform->setType('itemid', PARAM_INT);
        $mform->setDefault('itemid', 0);

        $mform->addElement('hidden', 'userid');
        $mform->setType('userid', PARAM_INT);
        $mform->setDefault('userid', 0);

        $mform->addElement('header', 'comment', get_string("addcomment", "block_exaport"));

        $mform->addElement('editor', 'entry', get_string("comment", "block_exaport"), null,
            array('rows' => 10, 'maxbytes' => $CFG->block_exaport_max_uploadfile_size));
        $mform->setType('entry', PARAM_TEXT);
        $mform->addRule('entry', get_string("commentshouldnotbeempty", "block_exaport"), 'required', null, 'client');
        $mform->add_exaport_help_button('entry', 'forms.items_comment.entry');

        $mform->addElement('filemanager', 'file', get_string('file', 'block_exaport'), null,
            array('subdirs' => 0, 'maxfiles' => 1));
        $mform->add_exaport_help_button('file', 'forms.items_comment.file');

        /*
        fjungwirth: hide grading at this stage (meeting LS 4.7.16)

        if ($this->_customdata['gradingpermission']) {
            $mform->addElement('header', 'itemgrading', get_string("itemgrading", "block_exaport"));
            $itemgrade = $this->_customdata['itemgrade'];
            $mform->addElement('select', 'itemgrade', get_string('gradeitem', 'block_exaport'), range(0, 100));
            $mform->setDefault('itemgrade', $itemgrade);

            $slider = '<div id="slider"></div>';
            $mform->addElement('html',$slider);
        }
        */

        $this->add_action_buttons(false, get_string('add'));

    }

}

class block_exaport_item_edit_form extends block_exaport_moodleform {

    public function definition() {
        global $CFG, $USER, $DB;

        $type = $this->_customdata['type'];

        $mform = &$this->_form;

        $mform->addElement('header', 'general', get_string($type, "block_exaport"));

        $mform->addElement('hidden', 'id');
        $mform->setType('id', PARAM_INT);
        $mform->setDefault('id', 0);

        $mform->addElement('hidden', 'courseid');
        $mform->setType('courseid', PARAM_INT);

        $mform->addElement('hidden', 'action');
        $mform->setType('action', PARAM_ACTION);
        $mform->setDefault('action', '');

        $mform->addElement('hidden', 'compids');
        $mform->setType('compids', PARAM_TEXT);
        $mform->setDefault('compids', '');

        $mform->addElement('text', 'name', get_string("title", "block_exaport"), 'maxlength="255" size="60"');
        $mform->setType('name', PARAM_TEXT);
        $mform->addRule('name', get_string("titlenotemtpy", "block_exaport"), 'required', null, 'client');
        $mform->add_exaport_help_button('name', 'forms.item.title');

        $mform->addElement('select', 'categoryid', get_string("category", "block_exaport"), array());
        $mform->addRule('categoryid', get_string("categorynotempty", "block_exaport"), 'required', null, 'client');
        $mform->setDefault('categoryid', 0);
        $this->category_select_setup($this->_customdata['cattype'], $this->_customdata['catid']);
        $mform->add_exaport_help_button('categoryid', 'forms.item.categoryid');


        // 'link' input for all types:
        $mform->addElement('text', 'url', get_string("url", "block_exaport"), 'maxlength="255" size="60"');
        $mform->setType('url', PARAM_TEXT);
        /*if ($type == 'link') {
            $mform->addElement('text', 'url', get_string("url", "block_exaport"), 'maxlength="255" size="60" value="http://"');
            $mform->setType('url', PARAM_TEXT);
            $mform->addRule('url', get_string("urlnotempty", "block_exaport"), 'required', null, 'client');
        } else {
            $mform->addElement('text', 'url', get_string("url", "block_exaport"), 'maxlength="255" size="60"');
            $mform->setType('url', PARAM_TEXT);
        }*/
        $mform->add_exaport_help_button('url', 'forms.item.url');

        // 'File' input is for ALL types
        if ($type == 'link' && 11 == 22) {
            // For code checker.
            $tempvar = 1;
        } else if (11 == 11 /* for ALL */ /*$type == 'file'*/) {
            $filelimits = 1;
            if ($CFG->block_exaport_multiple_files_in_item) {
                $filelimits = 10;
            }
            if ($this->_customdata['action'] == 'assignment_import') {
                // Assignment import.
                $mform->addElement('hidden', 'submissionid');
                $mform->setType('submissionid', PARAM_INT);
                $mform->addElement('hidden', 'fileid');
                $mform->setType('fileid', PARAM_TEXT);
            } else if ($this->_customdata['action'] == 'add') {
                $mform->addElement('filemanager', 'file', get_string('file', 'block_exaport'), null,
                    array('subdirs' => false, 'maxfiles' => $filelimits, 'maxbytes' => $CFG->block_exaport_max_uploadfile_size));
                // 'required' was disabled, because this input is for all types from now
                //                $mform->addRule('file', null, 'required', null, 'client');

            } else {
                // Filemanager for edit file.
                $mform->addElement('filemanager', 'file', get_string('file', 'block_exaport'), null,
                    array('subdirs' => false, 'maxfiles' => $filelimits, 'maxbytes' => $CFG->block_exaport_max_uploadfile_size));
                // 'required' was disabled, because this input is for all types from now
                //                $mform->addRule('file', null, 'required', null, 'client');
                $mform->add_exaport_help_button('file', 'forms.item.file');
            }
        }

        if (block_exaport_course_has_desp()) {
            $langcode = get_string("langcode", "block_desp");

            $sql = "SELECT lang.id,lang." . $langcode .
                " as name FROM {block_desp_lang} lang WHERE id IN(SELECT langid FROM {block_desp_check_lang} " .
                " WHERE userid=?) OR id IN (SELECT langid FROM {block_desp_lanhistories} WHERE userid=?) ORDER BY lang." .
                $langcode;
            $languages = $DB->get_records_sql_menu($sql, array($USER->id, $USER->id));

            $languages[0] = '';

            asort($languages);
            $mform->addElement('select', 'langid', get_string("desp_language", "block_exaport"), $languages);
            $mform->setType('langid', PARAM_INT);
            $mform->add_exaport_help_button('langid', 'forms.item.langid');
        }

        $textareafields = [ // field name => string marker
            'intro' => 'shortdescription',
            'project_description' => 'project_description',
            'project_process' => 'project_process',
            'project_result' => 'project_result',
        ];
        $usetextareas = @$this->_customdata['useTextareas'] ?: [];
        foreach ($textareafields as $textareafield => $stringmarker) {
            if (isset($usetextareas[$textareafield]) && $usetextareas[$textareafield]) {
                // It has iframe, show textfield, no editor.
                $mform->addElement('textarea', $textareafield, get_string($stringmarker, 'block_exaport'), 'rows="20" cols="50" style="width: 95%"');
                $mform->setType($textareafield, PARAM_RAW);
                // Required for all item types
                //                if ($type == 'note' && $textareafield == 'intro') {
                // Intro field is now optional - validation rule removed
                //                }
                $mform->add_exaport_help_button($textareafield, 'forms.item.' . $textareafield);
            } else {
                if (!isset($this->_customdata['textfieldoptions'])) {
                    $this->_customdata['textfieldoptions'] = array('trusttext' => true, 'subdirs' => true, 'maxfiles' => 99,
                        'context' => context_user::instance($USER->id));
                }
                $mform->addElement('editor', $textareafield . '_editor', get_string($stringmarker, 'block_exaport'), null,
                    $this->_customdata['textfieldoptions']);
                $mform->setType($textareafield . '_editor', PARAM_RAW);
                // Intro field is now optional - validation rule removed
                $mform->add_exaport_help_button($textareafield . '_editor', 'forms.item.' . $textareafield . '_editor');
            }
        }

        $mform->addElement('filemanager', 'iconfile', get_string('iconfile', 'block_exaport'), null,
            array('subdirs' => false, 'maxfiles' => 1, 'maxbytes' => $CFG->block_exaport_max_uploadfile_size,
                'accepted_types' => array('image', 'web_image')));
        $mform->add_exaport_help_button('iconfile', 'forms.item.iconfile');

        // Tags.
        if (!empty($CFG->usetags) && $CFG->usetags) {
            $tags = \core_tag_tag::get_tags_by_area_in_contexts('block_exaport', 'block_exaportitem', [context_user::instance($USER->id)]);
            $tagstrings = [];
            foreach ($tags as $tag) {
                $tagstrings[$tag->name] = $tag->name;
            }
            $showstandard = core_tag_area::get_showstandard('block_exaport', 'block_exaportitem');
            if ($showstandard != core_tag_tag::HIDE_STANDARD) {
                $namefield = empty($CFG->keeptagnamecase) ? 'name' : 'rawname';
                $standardtags = $DB->get_records('tag',
                    array(
                        'isstandard' => 1,
                        'tagcollid' => core_tag_area::get_collection('block_exaport', 'block_exaportitem'),
                    ),
                    $namefield,
                    'id,' . $namefield
                );
                foreach ($standardtags as $standardtag) {
                    $tagstrings[$standardtag->$namefield] = $standardtag->$namefield;
                }
            }
            $options = [
                'tags' => true,
                'multiple' => true,
            ];
            $mform->addElement('autocomplete', 'tags', get_string('tags'), $tagstrings, $options);
            $mform->add_exaport_help_button('tags', 'forms.item.tags');
        }

        if (!empty($this->_customdata['allowedit']) || empty($this->_customdata['current'])) {
            $this->add_action_buttons($cancel = true, $submitlabel = get_string('saveitem', 'block_exaport'));
        } else {
            $exampleid = $DB->get_field(BLOCK_EXACOMP_DB_ITEM_MM,
                'exampleid',
                array('itemid' => $this->_customdata['current']->id));
            $url = new moodle_url("/blocks/exacomp/example_submission.php",
                array("courseid" => $this->_customdata['course']->id, "newsubmission" => true, "exampleid" => $exampleid));

            $mform->addElement('hidden', 'allowedit');
            $mform->setType('allowedit', PARAM_INT);
            $mform->setDefault('allowedit', 0);

            $mform->disabledIf('name', 'allowedit', 'neq', 1);
            $mform->disabledIf('categoryid', 'allowedit', 'neq', 1);
            $mform->disabledIf('url', 'allowedit', 'neq', 1);
            $mform->disabledIf('file', 'allowedit', 'neq', 1);
            $mform->disabledIf('intro', 'allowedit', 'neq', 1);
            $mform->disabledIf('intro_editor', 'allowedit', 'neq', 1);
            $mform->disabledIf('iconfile', 'allowedit', 'neq', 1);

            if (!empty($this->_customdata['allowresubmission'])) {
                $mform->addElement('button', 'newsubmission', get_string("newsubmission", "block_exacomp"),
                    array('onclick' => 'location.href = " ' . str_replace("&amp;", "&", $url) . '"'));
            } else {
                $mform->addElement('html', get_string("isgraded", "block_exacomp"));
            }
        }
    }

    public function category_select_setup($categorytype = '', $selectedcat = 0) {
        global $CFG, $USER, $DB;
        $mform = &$this->_form;
        $categorysselect = &$mform->getElement('categoryid');
        $categorysselect->removeOptions();

        if ($categorytype == 'shared') {
            // only shared categories
            $sharedcatids = [];
            $sharedcategories = \block_exaport\get_categories_shared_to_user($USER->id);
            if ($sharedcategories) {
                foreach ($sharedcategories as $shcat) {
                    $sharedcatids = array_merge($sharedcatids, array_keys($shcat->categories));
                }
            }
            if (in_array($selectedcat, $sharedcatids)) {
                $conditions = array($selectedcat);
                $outercategories = $DB->get_records_select("block_exaportcate", "id = ?", $conditions, "name asc");
            } else {
                $outercategories = null;
            }
        } else {
            // only MY categories
            $conditions = array("userid" => $USER->id, "pid" => 0);
            $outercategories = $DB->get_records_select("block_exaportcate", "userid = ? AND pid = ?", $conditions, "name asc");
        }
        $categories = array(
            0 => block_exaport_get_root_category()->name,
        );
        if ($outercategories) {
            $categories = $categories + rek_category_select_setup($outercategories, " ", $categories);
        }
        $categorysselect->loadArray($categories);
    }

}

function rek_category_select_setup($outercategories, $entryname, $categories) {
    global $DB, $USER;
    foreach ($outercategories as $curcategory) {
        $categories[$curcategory->id] = $entryname . format_string($curcategory->name);
        $name = $entryname . format_string($curcategory->name);

        $conditions = array("userid" => $USER->id, "pid" => $curcategory->id);
        $innercategories = $DB->get_records_select("block_exaportcate", "userid = ? AND pid = ?", $conditions, "name asc");
        if ($innercategories) {
            $categories = rek_category_select_setup($innercategories, $name . ' &rarr; ', $categories);
        }
    }
    return $categories;
}
