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/>.

declare(strict_types=1);

namespace core_course\reportbuilder\local\entities;

use context_course;

use core_course\reportbuilder\local\formatters\enrolment as enrolment_formatter;

use core_reportbuilder\local\entities\base;

use core_reportbuilder\local\filters\date;

use core_reportbuilder\local\filters\select;

use core_reportbuilder\local\helpers\database;

use core_reportbuilder\local\helpers\format;

use core_reportbuilder\local\report\column;

use core_reportbuilder\local\report\filter;

use core_user\output\status_field;

use enrol_plugin;

use lang_string;

use stdClass;

/**

 * Course enrolment entity implementation

 *

 * @package     core_course

 * @copyright   2022 David Matamoros <davidmc@moodle.com>

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

 */

class enrolment extends base {

    /**

     * Database tables that this entity uses

     *

     * @return string[]

     */

    protected function get_default_tables(): array {

        return [

            'user_enrolments',

            'enrol',

        ];

    }

    /**

     * The default title for this entity in the list of columns/conditions/filters in the report builder

     *

     * @return lang_string

     */

    protected function get_default_entity_title(): lang_string {

        return new lang_string('enrolment', 'enrol');

    }

    /**

     * Initialise the entity

     *

     * @return base

     */

    public function initialise(): base {

        foreach ($this->get_all_columns() as $column) {

            $this->add_column($column);

        }

        // All the filters defined by the entity can also be used as conditions.

        foreach ($this->get_all_filters() as $filter) {

            $this

                ->add_filter($filter)

                ->add_condition($filter);

        }

        return $this;

    }

    /**

     * Returns list of all available columns

     *

     * @return column[]

     */

    protected function get_all_columns(): array {

        $userenrolments = $this->get_table_alias('user_enrolments');

        // Enrolment time created.

        $columns[] = (new column(

            'timecreated',

            new lang_string('timecreated', 'moodle'),

            $this->get_entity_name()

        ))

            ->add_joins($this->get_joins())

            ->set_type(column::TYPE_TIMESTAMP)

            ->add_field("{$userenrolments}.timecreated")

            ->set_is_sortable(true)

            ->add_callback([format::class, 'userdate']);

        // Enrolment time started.

        $columns[] = (new column(

            'timestarted',

            new lang_string('timestarted', 'enrol'),

            $this->get_entity_name()

        ))

            ->add_joins($this->get_joins())

            ->set_type(column::TYPE_TIMESTAMP)

            ->add_field("

                CASE WHEN {$userenrolments}.timestart = 0

                     THEN {$userenrolments}.timecreated

                     ELSE {$userenrolments}.timestart

                 END", 'timestarted')

            ->set_is_sortable(true)

            ->add_callback([format::class, 'userdate']);

        // Enrolment time ended.

        $columns[] = (new column(

            'timeended',

            new lang_string('timeended', 'enrol'),

            $this->get_entity_name()

        ))

            ->add_joins($this->get_joins())

            ->set_type(column::TYPE_TIMESTAMP)

            ->add_field("{$userenrolments}.timeend")

            ->set_is_sortable(true)

            ->add_callback([format::class, 'userdate']);

        // Enrolment status.

        $columns[] = (new column(

            'status',

            new lang_string('status', 'moodle'),

            $this->get_entity_name()

        ))

            ->add_joins($this->get_joins())

            ->set_type(column::TYPE_TEXT)

            ->add_field($this->get_status_field_sql(), 'status')

            ->set_is_sortable(true)

            ->add_callback([enrolment_formatter::class, 'enrolment_status']);

        return $columns;

    }

    /**

     * Generate SQL snippet suitable for returning enrolment status field

     *

     * @return string

     */

    private function get_status_field_sql(): string {

        $time = time();

        $userenrolments = $this->get_table_alias('user_enrolments');

        $enrol = $this->get_table_alias('enrol');

        return "

            CASE WHEN {$userenrolments}.status = " . ENROL_USER_ACTIVE . "

                 THEN CASE WHEN ({$userenrolments}.timestart > {$time})

                             OR ({$userenrolments}.timeend > 0 AND {$userenrolments}.timeend < {$time})

                             OR ({$enrol}.status = " . ENROL_INSTANCE_DISABLED . ")

                           THEN " . status_field::STATUS_NOT_CURRENT . "

                           ELSE " . status_field::STATUS_ACTIVE . "

                      END

                 ELSE {$userenrolments}.status

            END";

    }

    /**

     * Return list of all available filters

     *

     * @return filter[]

     */

    protected function get_all_filters(): array {

        $userenrolments = $this->get_table_alias('user_enrolments');

        // Enrolment time created.

        $filters[] = (new filter(

            date::class,

            'timecreated',

            new lang_string('timecreated', 'moodle'),

            $this->get_entity_name(),

            "{$userenrolments}.timecreated"

        ))

            ->add_joins($this->get_joins())

            ->set_limited_operators([

                date::DATE_ANY,

                date::DATE_NOT_EMPTY,

                date::DATE_EMPTY,

                date::DATE_RANGE,

                date::DATE_LAST,

                date::DATE_CURRENT,

            ]);

        // Enrolment time started.

        $filters[] = (new filter(

            date::class,

            'timestarted',

            new lang_string('timestarted', 'enrol'),

            $this->get_entity_name(),

            "CASE WHEN {$userenrolments}.timestart = 0

                          THEN {$userenrolments}.timecreated

                          ELSE {$userenrolments}.timestart

                      END"

        ))

            ->add_joins($this->get_joins())

            ->set_limited_operators([

                date::DATE_ANY,

                date::DATE_NOT_EMPTY,

                date::DATE_EMPTY,

                date::DATE_RANGE,

                date::DATE_LAST,

                date::DATE_CURRENT,

            ]);

        // Enrolment time ended.

        $filters[] = (new filter(

            date::class,

            'timeended',

            new lang_string('timeended', 'enrol'),

            $this->get_entity_name(),

            "{$userenrolments}.timeend"

        ))

            ->add_joins($this->get_joins())

            ->set_limited_operators([

                date::DATE_ANY,

                date::DATE_NOT_EMPTY,

                date::DATE_EMPTY,

                date::DATE_RANGE,

                date::DATE_LAST,

                date::DATE_CURRENT,

            ]);

        // Enrolment status.

        $filters[] = (new filter(

            select::class,

            'status',

            new lang_string('status', 'moodle'),

            $this->get_entity_name(),

            $this->get_status_field_sql()

        ))

            ->add_joins($this->get_joins())

            ->set_options(enrolment_formatter::enrolment_values());

        return $filters;

    }

}