Proyectos de Subversion Moodle

<?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/>.

/**

 * Plugin local library.

 *

 * @package    block_point_view

 * @copyright  2021 Astor Bizard

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

/**

 * Check consistency of given block instance with given parent context. Throws a moodle_exception on failed check.

 *

 * @param object|int $instanceorid Block instance or id.

 * @param context $context Parent context of the block.

 * @param string $errorcontext Information about the context in which a failed check occured.

 * @param string $errorurl URL to redirect to on a failed check.

 * @throws moodle_exception

 */

function block_point_view_check_instance($instanceorid, $context, $errorcontext = '', $errorurl = '') {

    global $DB;

    if (is_object($instanceorid)) {

        $blockrecord = $instanceorid;

    } else {

        $blockrecord = $DB->get_record('block_instances', [ 'id' => $instanceorid ]);

    }

    if ($blockrecord === false || $blockrecord->parentcontextid != $context->id || $blockrecord->blockname != 'point_view') {

        throw new moodle_exception('invalidblockinstance', 'error', $errorurl,

                $errorcontext . ' / ' . get_string('pluginname', 'block_point_view'));

    }

}

/**

 * Find and return pix url.

 *

 * @param int $contextid Context in which to search the file.

 * @param string $filearea File area.

 * @param string $file File name.

 * @return string|boolean url if found, false if not.

 */

function block_point_view_pix_url($contextid, $filearea, $file) {

    $fs = get_file_storage();

    if ($fs->file_exists($contextid, 'block_point_view', $filearea, 0, '/', $file . '.png')) {

        return moodle_url::make_pluginfile_url($contextid, 'block_point_view', $filearea, 0, '/', $file)->out();

    } else {

        return false;

    }

}

/**

 * Get current pix for a block instance.

 * This method checks existence of selected pix, replacing them with default ones if the first do not exist.

 *

 * @param block_point_view $blockinstance Block instance.

 * @param array|null $subset Requested subset of pix. If none specified, all will be returned.

 * @return string[]

 */

function block_point_view_get_current_pix($blockinstance, $subset = null) {

    global $CFG;

    if ($subset !== null) {

        $pixfiles = $subset;

    } else {

        $pixfiles = [

                'easy',

                'better',

                'hard',

                'group_',

                'group_E',

                'group_B',

                'group_H',

                'group_EB',

                'group_EH',

                'group_BH',

                'group_EBH',

        ];

    }

    $pix = [];

    foreach ($pixfiles as $file) {

        $pix[$file] = false;

        if (isset($blockinstance->config->pixselect) && $blockinstance->config->pixselect == 'custom') {

            $pix[$file] = block_point_view_pix_url($blockinstance->context->id, 'point_views_pix', $file);

        }

        if (!$pix[$file]

                && get_config('block_point_view', 'enable_pix_admin')

                && (!isset($blockinstance->config->pixselect) || $blockinstance->config->pixselect != 'default')) {

            $pix[$file] = block_point_view_pix_url(1, 'point_views_pix_admin', $file);

        }

        if (!$pix[$file]) {

            $pix[$file] = $CFG->wwwroot . '/blocks/point_view/pix/' . $file . '.png';

        }

    }

    return $pix;

}

/**

 * Get current text for a given reaction.

 *

 * @param block_point_view $blockinstance Block instance.

 * @param string $reaction Reaction name.

 * @return string Current reaction text.

 */

function block_point_view_get_reaction_text($blockinstance, $reaction) {

    return format_string((isset($blockinstance->config->{'pix_text_' . $reaction})) ?

            $blockinstance->config->{'pix_text_' . $reaction}

            : get_string('defaulttext' . $reaction, 'block_point_view'));

}

/**

 * Retrieve difficulty settings for modules within a course.

 *

 * @param block_point_view $blockinstance Block instance.

 * @param int $courseid Course id.

 * @return array Difficulty settings for every course module. One entry for each module, empty array if difficulty tracks disabled.

 */

function block_point_view_get_difficulty_levels($blockinstance, $courseid) {

    // If difficulty tracks are disabled, do not put any track.

    if (!isset($blockinstance->config->enable_difficultytracks)

            || !$blockinstance->config->enable_difficultytracks) {

        return [];

    }

    $cms = get_fast_modinfo($courseid, -1)->cms;

    $difficultylevels = [];

    // Loop through modules.

    foreach ($cms as $cm) {

        if (isset($blockinstance->config->{'difficulty_' . $cm->id})) {

            $difficulty = $blockinstance->config->{'difficulty_' . $cm->id};

        } else {

            $difficulty = 0;

        }

        $difficultylevels[] = [

                'id' => $cm->id,

                'difficultyLevel' => $difficulty,

        ];

    }

    return $difficultylevels;

}

/**

 * Retrieve reactions settings for modules within a course.

 *

 * @param block_point_view $blockinstance Block instance.

 * @param int $userid User id, as returned array contains information about user's current vote.

 * @param int $courseid Course id.

 * @return array Reactions settings for every course module. One entry for each module with reactions enabled.

 */

function block_point_view_get_modules_with_reactions($blockinstance, $userid, $courseid) {

    global $DB;

    if (empty($blockinstance->config->enable_point_views)) {

        return [];

    }

    $cms = get_fast_modinfo($courseid, $userid)->cms;

    $moduleswithreactions = [];

    foreach ($cms as $cm) {

        if (isset($blockinstance->config->{'moduleselectm' . $cm->id})

        && $blockinstance->config->{'moduleselectm' . $cm->id} > 0

        && $cm->uservisible) {

            $moduleswithreactions[] = $cm->id;

        }

    }

    if (empty($moduleswithreactions)) {

        return [];

    }

    list($insql, $inparams) = $DB->get_in_or_equal($moduleswithreactions, SQL_PARAMS_NAMED);

    $params = array_merge($inparams, [ 'userid' => $userid, 'courseid' => $courseid ]);

    if (isset($blockinstance->config->show_other_users_reactions)

            && !$blockinstance->config->show_other_users_reactions

            && !has_capability('block/point_view:access_overview', $blockinstance->context)) {

        $sql = 'SELECT cm.id as cmid, COALESCE(bpv.vote, 0) as uservote

            FROM {course_modules} cm

            LEFT JOIN (SELECT cmid, vote FROM {block_point_view} WHERE userid = :userid) bpv ON bpv.cmid = cm.id

            WHERE cm.course = :courseid AND cm.id ' . $insql . '

            GROUP BY cm.id, bpv.vote';

        $result = array_values($DB->get_records_sql($sql, $params));

        foreach ($result as &$cmrow) {

            $cmrow->totaleasy = $cmrow->uservote == 1 ? 1 : 0;

            $cmrow->totalbetter = $cmrow->uservote == 2 ? 1 : 0;

            $cmrow->totalhard = $cmrow->uservote == 3 ? 1 : 0;

        }

        return $result;

    } else {

        $sql = 'SELECT cm.id as cmid,

            COALESCE(tableeasy.totaleasy, 0) as totaleasy,

            COALESCE(tablebetter.totalbetter, 0) as totalbetter,

            COALESCE(tablehard.totalhard, 0) as totalhard,

            COALESCE(tableuser.vote, 0) as uservote

            FROM {course_modules} cm

            LEFT JOIN (SELECT cmid, COUNT(vote) as totaleasy FROM {block_point_view}

                    WHERE vote = 1 GROUP BY cmid) as tableeasy ON tableeasy.cmid = cm.id

            LEFT JOIN (SELECT cmid, COUNT(vote) as totalbetter FROM {block_point_view}

                    WHERE vote = 2 GROUP BY cmid) as tablebetter ON tablebetter.cmid = cm.id

            LEFT JOIN (SELECT cmid, COUNT(vote) as totalhard FROM {block_point_view}

                    WHERE vote = 3 GROUP BY cmid) as tablehard ON tablehard.cmid = cm.id

            LEFT JOIN (SELECT cmid, vote FROM {block_point_view}

                    WHERE userid = :userid) AS tableuser ON tableuser.cmid = cm.id

            WHERE cm.id ' . $insql . '

            AND cm.course = :courseid

            GROUP BY cm.id, tableeasy.totaleasy, tablebetter.totalbetter, tablehard.totalhard, tableuser.vote';

        // TODO optimize this loading time, maybe add some indexes to the table.

        $params = array_merge($inparams, [ 'userid' => $userid, 'courseid' => $courseid ]);

        return array_values($DB->get_records_sql($sql, $params)); // Takes < 0.1s on small DB.

    }

}

/**

 * Get difficulty tracks colors, as set in plugin administration configuration.

 */

function block_point_view_get_track_colors() {

    return [

            '',

            get_config('block_point_view', 'green_track_color_admin'),

            get_config('block_point_view', 'blue_track_color_admin'),

            get_config('block_point_view', 'red_track_color_admin'),

            get_config('block_point_view', 'black_track_color_admin'),

    ];

}

/**

 * User data string for the overview table

 *

 * @param array $userids

 * @param stdClass $users

 * @return string

 */

function block_point_view_format_users($userids, $users) {

    global $OUTPUT;

    $string = '';

    foreach ($userids as $userid) {

        $user = $users[$userid];

        $string .= $OUTPUT->user_picture($user) . fullname( $user ) . '<br>';

    }

    return $string;

}

/**

 * Call all required javascript for edit_form.

 *

 * @param int $blockcontextid Context id of the block.

 */

function block_point_view_require_edit_form_javascript($blockcontextid) {

    global $COURSE, $PAGE;

    $envconf = [

            'courseid' => $COURSE->id,

            'contextid' => $blockcontextid,

    ];

    $trackcolors = block_point_view_get_track_colors();

    $params = [ $envconf, $trackcolors ];

    $PAGE->requires->js_call_amd('block_point_view/script_config_point_view', 'init', $params);

    $PAGE->requires->string_for_js('resetreactionsconfirmation', 'block_point_view', format_string($COURSE->fullname));

    $PAGE->requires->string_for_js('cleanupreactionsconfirmation', 'block_point_view', format_string($COURSE->fullname));

    $PAGE->requires->strings_for_js([

                                            'deleteemojiconfirmation',

                                            'reactionsresetsuccessfully',

                                            'reactionscleanedupsuccessfully',

                                            'resetreactionsonmoduleconfirmation',

                                    ], 'block_point_view');

    $PAGE->requires->strings_for_js([ 'ok', 'info' ], 'moodle');

}