<?php
// This file keeps track of upgrades to
// the data module
//
// Sometimes, changes between versions involve
// alterations to database structures and other
// major things that may break installations.
//
// The upgrade function in this file will attempt
// to perform all the necessary actions to upgrade
// your older installation to the current version.
//
// If there's something it cannot do itself, it
// will tell you what you need to do.
//
// The commands in here will all be database-neutral,
// using the methods of database_manager class
//
// Please do not forget to use upgrade_set_timeout()
// before any action that may take longer time to finish.

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

function xmldb_data_upgrade($oldversion) {

<     global $CFG, $DB;



>     global $DB;




<     // Automatically generated Moodle v3.5.0 release upgrade line.
<     // Put any upgrade step following this.



>     $dbman = $DB->get_manager(); // Loads ddl manager and xmldb classes.




<     // Automatically generated Moodle v3.6.0 release upgrade line.



>     // Automatically generated Moodle v3.9.0 release upgrade line.


    // Put any upgrade step following this.


<     // Automatically generated Moodle v3.7.0 release upgrade line.



>     // Automatically generated Moodle v4.0.0 release upgrade line.


    // Put any upgrade step following this.

>     if ($oldversion < 2022081600) {

>         // Define key userid (foreign) to be added to data_records.
    if ($oldversion < 2019052001) {
>         $table = new xmldb_table('data_records');

>         $key = new xmldb_key('userid', XMLDB_KEY_FOREIGN, ['userid'], 'user', ['id']);
        $columns = $DB->get_columns('data');
>         // Launch add key userid.

>         $dbman->add_key($table, $key);



<     if ($oldversion < 2019052001) {



>         // Data savepoint reached.
>         upgrade_mod_savepoint(true, 2022081600, 'data');
>     }



<         $columns = $DB->get_columns('data');



>     // Automatically generated Moodle v4.1.0 release upgrade line.
>     // Put any upgrade step following this.



<         $oldclass = "mod-data-default-template ##approvalstatus##";
<         $newclass = "mod-data-default-template ##approvalstatusclass##";



>     // Automatically generated Moodle v4.2.0 release upgrade line.
>     // Put any upgrade step following this.



<         // Update existing classes.
<         $DB->replace_all_text('data', $columns['singletemplate'], $oldclass, $newclass);
<         $DB->replace_all_text('data', $columns['listtemplate'], $oldclass, $newclass);
<         $DB->replace_all_text('data', $columns['addtemplate'], $oldclass, $newclass);
<         $DB->replace_all_text('data', $columns['rsstemplate'], $oldclass, $newclass);
<         $DB->replace_all_text('data', $columns['asearchtemplate'], $oldclass, $newclass);



>     if ($oldversion < 2023042401) {
>         // Clean orphan data_records.
>         $sql = "SELECT d.id FROM {data} d
>             LEFT JOIN {data_fields} f ON d.id = f.dataid
>             WHERE f.id IS NULL";
>         $emptydatas = $DB->get_records_sql($sql);
>         if (!empty($emptydatas)) {
>             $dataids = array_keys($emptydatas);
>             list($datainsql, $dataparams) = $DB->get_in_or_equal($dataids, SQL_PARAMS_NAMED, 'data');
>             $DB->delete_records_select('data_records', "dataid $datainsql", $dataparams);
>         }


        // Data savepoint reached.

<         upgrade_mod_savepoint(true, 2019052001, 'data');



>         upgrade_mod_savepoint(true, 2023042401, 'data');


    }

<     // Automatically generated Moodle v3.8.0 release upgrade line.
<     // Put any upgrade step following this.
< 
<     // Automatically generated Moodle v3.9.0 release upgrade line.
<     // Put any upgrade step following this.



    return true;
}