<?php
// This file is part of Moodle - http://moodle.org/
//
// 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/>.

/**
 * Boost o365teams.
 *
 * @package    theme_boost_o365teams
 * @copyright  2018 Enovation Solutions
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

require_once($CFG->dirroot . '/course/renderer.php');
require_once($CFG->dirroot . '/mod/assign/classes/output/renderer.php');
require_once($CFG->dirroot . '/mod/assign/classes/output/assign_header.php');
require_once($CFG->dirroot . '/mod/quiz/renderer.php');

/**
 * mod_assign
 *
 * @package    theme_boost_o365teams
 * @copyright  2018 Enovation Solutions
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class theme_boost_o365teams_mod_assign_renderer extends mod_assign\output\renderer {
    /**
     * Render the header.
     *
     * @param mod_assign\output\assign_header $header
     * @return string
     */
    public function render_assign_header(mod_assign\output\assign_header $header) {
        if ($header->subpage) {
            $this->page->navbar->add($header->subpage, $header->subpageurl);
        }

        $heading = format_string($header->assign->name, false, ['context' => $header->context]);
        $this->page->set_title($heading);
        $this->page->set_heading($this->page->course->fullname);

        $description = $header->preface;
        if ($header->showintro) {
            $description = $this->output->box_start('generalbox boxaligncenter', 'intro');
            if ($header->showintro) {
                $description .= format_module_intro('assign', $header->assign, $header->coursemoduleid);
            }
            $description .= $header->postfix;
            $description .= $this->output->box_end();
        }

        $activityheader = $this->page->activityheader;
        $activityheader->set_attrs([
            'title' => $activityheader->is_title_allowed() ? $heading : '',
            'description' => $description,
        ]);

        return $this->output->header();
    }
}

/**
 * course
 *
 * @package    theme_boost_o365teams
 * @copyright  2018 Enovation Solutions
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class theme_boost_o365teams_core_course_renderer extends core_course_renderer {
    /**
     * Render the header.
     *
     * @param object $course
     * @param object $completioninfo
     * @param cm_info $mod
     * @param int $sectionreturn
     * @param array $displayoptions
     * @return string
     */
    public function course_section_cm($course, &$completioninfo, cm_info $mod, $sectionreturn, $displayoptions = []) {
        $output = '';
        // We return empty string (because course module will not be displayed at all) if
        // 1) The activity is not visible to users; and
        // 2) The 'availableinfo' is empty, i.e. the activity was
        // hidden in a way that leaves no info, such as using the
        // eye icon.
        if (!$mod->is_visible_on_course_page()) {
            return $output;
        }

        $indentclasses = 'mod-indent';
        if (!empty($mod->indent)) {
            $indentclasses .= ' mod-indent-' . $mod->indent;
            if ($mod->indent > 15) {
                $indentclasses .= ' mod-indent-huge';
            }
        }

        $output .= html_writer::start_tag('div');

        if ($this->page->user_is_editing()) {
            $output .= course_get_cm_move($mod, $sectionreturn);
        }

        $output .= html_writer::start_tag('div', ['class' => 'mod-indent-outer']);

        // This div is used to indent the content.
        $output .= html_writer::div('', $indentclasses);

        // Start a wrapper for the actual content to keep the indentation consistent.
        $output .= html_writer::start_tag('div');

        // If there is content but NO link (eg label),
        // then display the content here (BEFORE any icons).
        // In this case cons must be
        // displayed after the content so that it makes more sense visually
        // and for accessibility reasons, e.g. if you have a one-line label
        // it should work similarly (at least in terms of ordering) to an
        // activity.
        $contentpart = $this->course_section_cm_text($mod, $displayoptions);
        $url = $mod->url;

        $modicons = '';
        if ($this->page->user_is_editing()) {
            $editactions = course_get_cm_edit_actions($mod, $mod->indent, $sectionreturn);
            $modicons .= ' ' . $this->course_section_cm_edit_actions($editactions, $mod, $displayoptions);
            $modicons .= $mod->afterediticons;
        }

        $modicons .= $this->course_section_cm_completion($course, $completioninfo, $mod, $displayoptions);

        if (!empty($modicons)) {
            $output .= html_writer::span($modicons, 'actions');
        }
        // Display the link to the module (or do nothing if module has no url).
        $cmname = $this->course_section_cm_name($mod, $displayoptions);

        if (!empty($cmname)) {
            // Start the div for the activity title, excluding the edit icons.
            $output .= html_writer::start_tag('div', ['class' => 'activityinstance']);
            $output .= $cmname;

            // Module can put text after the link (e.g. forum unread).
            $output .= $mod->afterlink;

            // Closing the tag which contains everything but edit icons. Content part of the module should not be part of this.
            $output .= html_writer::end_tag('div');
        }
        if (empty($url)) {
            $output .= $contentpart;
        }
        // Show availability info (if module is not available).
        $output .= $this->course_section_cm_availability($mod, $displayoptions);

        // If there is content AND a link, then display the content here
        // (AFTER any icons). Otherwise it was displayed before.
        if (!empty($url)) {
            $output .= $contentpart;
        }

        $output .= html_writer::end_tag('div');

        // End of indentation div.
        $output .= html_writer::end_tag('div');

        $output .= html_writer::end_tag('div');

        return $output;
    }

    /**
     * Get Section Name
     *
     * @param cm_info $mod
     * @param array $displayoptions
     * @return string
     */
    public function course_section_cm_name_title(cm_info $mod, $displayoptions = []) {
        $output = '';
        $url = $mod->url;
        if (!$mod->is_visible_on_course_page() || !$url) {
            // Nothing to be displayed to the user.
            return $output;
        }

        // Accessibility: for files get description via icon, this is very ugly hack!
        $instancename = $mod->get_formatted_name();
        $altname = $mod->modfullname;
        // Avoid unnecessary duplication: if e.g. a forum name already
        // includes the word forum (or Forum, etc) then it is unhelpful
        // to include that in the accessible description that is added.
        if (false !== strpos(core_text::strtolower($instancename),
                core_text::strtolower($altname))) {
            $altname = '';
        }
        // File type after name, for alphabetic lists (screen reader).
        if ($altname) {
            $altname = get_accesshide(' ' . $altname);
        }

        [$linkclasses, $textclasses] = $this->course_section_cm_classes($mod);

        // Get on-click attribute value if specified and decode the onclick - it
        // has already been encoded for display (puke).
        $onclick = htmlspecialchars_decode($mod->onclick, ENT_QUOTES);

        // Display link itself.
        $activitylink = html_writer::empty_tag('img', ['src' => $mod->get_icon_url(),
                'class' => 'iconlarge activityicon', 'alt' => ' ', 'role' => 'presentation']) .
            html_writer::tag('span', $instancename . $altname, ['class' => 'instancename']) .
            html_writer::tag('span', '', ['class' => 'fa fa-external-link popupicon']);
        if ($mod->uservisible) {
            $output .= html_writer::link($url, $activitylink, ['class' => $linkclasses, 'onclick' => $onclick]);
        } else {
            // We may be displaying this just in order to show information
            // about visibility, without the actual link ($mod->is_visible_on_course_page()).
            $output .= html_writer::tag('div', $activitylink, ['class' => $textclasses]);
        }

        return $output;
    }
}

/**
 * mod_quiz
 *
 * @package    theme_boost_o365teams
 * @copyright  2018 Enovation Solutions
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class theme_boost_o365teams_mod_quiz_renderer extends mod_quiz_renderer {
    /**
     * Ouputs the form for making an attempt
     *
     * @param quiz_attempt $attemptobj
     * @param int $page Current page number
     * @param array $slots Array of integers relating to questions
     * @param int $id ID of the attempt
     * @param int $nextpage Next page number
     */
    public function attempt_form($attemptobj, $page, $slots, $id, $nextpage) {
        $output = '';

        // Start the form.
        $output .= html_writer::start_tag('form',
            ['action' => new moodle_url($attemptobj->processattempt_url(),
                ['cmid' => $attemptobj->get_cmid()]), 'method' => 'post',
                'enctype' => 'multipart/form-data', 'accept-charset' => 'utf-8',
                'id' => 'responseform']);
        $output .= html_writer::start_tag('div');

        // Print all the questions.
        foreach ($slots as $slot) {
            $output .= $attemptobj->render_question($slot, false, $this,
                $attemptobj->attempt_url($slot, $page), $this);
        }

        $navmethod = $attemptobj->get_quiz()->navmethod;
        $output .= $this->attempt_navigation_buttons_with_link($page, $attemptobj->is_last_page($page), $navmethod,
            $attemptobj->view_url());

        // Some hidden fields to trach what is going on.
        $output .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => 'attempt',
            'value' => $attemptobj->get_attemptid()]);
        $output .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => 'thispage',
            'value' => $page, 'id' => 'followingpage']);
        $output .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => 'nextpage',
            'value' => $nextpage]);
        $output .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => 'timeup',
            'value' => '0', 'id' => 'timeup']);
        $output .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => 'sesskey',
            'value' => sesskey()]);
        $output .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => 'scrollpos',
            'value' => '', 'id' => 'scrollpos']);

        // Add a hidden field with questionids. Do this at the end of the form, so
        // if you navigate before the form has finished loading, it does not wipe all
        // the student's answers.
        $output .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => 'slots',
            'value' => implode(',', $attemptobj->get_active_slots($page))]);

        // Finish the form.
        $output .= html_writer::end_tag('div');
        $output .= html_writer::end_tag('form');

        $output .= $this->connection_warning();

        return $output;
    }

    /**
     * Display the prev/next buttons that go at the bottom of each page of the attempt.
     * A new "return to quiz menu" button is added in the custom renderer function.
     *
     * This function is created based on attemp_navigation_buttons() function of parent class.
     *
     * @param int $page the page number. Starts at 0 for the first page.
     * @param bool $lastpage is this the last page in the quiz?
     * @param string $navmethod Optional quiz attribute, 'free' (default) or 'sequential'
     * @param string|bool $viewurl URL to the view quiz page.
     * @return string HTML fragment.
     */
    protected function attempt_navigation_buttons_with_link($page, $lastpage, $navmethod = 'free', $viewurl = null) {
        $output = '';

        $output .= html_writer::start_tag('div', ['class' => 'submitbtns submitbtns_with_return']);
        if ($page > 0 && $navmethod == 'free') {
            $output .= html_writer::empty_tag('input', ['type' => 'submit', 'name' => 'previous',
                'value' => get_string('navigateprevious', 'quiz'), 'class' => 'mod_quiz-prev-nav btn btn-secondary']);
        }
        if ($lastpage) {
            $nextlabel = get_string('endtest', 'quiz');
        } else {
            $nextlabel = get_string('navigatenext', 'quiz');
        }
        $output .= html_writer::empty_tag('input', ['type' => 'submit', 'name' => 'next',
            'value' => $nextlabel, 'class' => 'mod_quiz-next-nav btn btn-primary']);
        if ($viewurl) {
            // Return button.
            $output .= html_writer::link($viewurl, get_string('navigatereturn', 'theme_boost_o365teams'),
                ['class' => 'btn btn-secondary mod_quiz-return-nav']);
        }
        $output .= html_writer::end_tag('div');

        return $output;
    }

    /**
     * No Question message
     *
     * @param boolean $canedit
     * @param url $editurl
     * @return string
     */
    public function no_questions_message($canedit, $editurl) {
        $output = '';
        $output .= $this->notification(get_string('noquestions', 'quiz'));
        if ($canedit) {
            $output .= $this->single_button($editurl, get_string('editquiz', 'quiz'), 'get', ["primary" => true]);
        }

        return $output;
    }
}
