<?php
// renametopics.php
// PHP CLI script to rename topics of a Moodle course based on list.txt

define('CLI_SCRIPT', true);
require(__DIR__ . '/config.php');
require_once($CFG->dirroot . '/course/lib.php');

global $DB;

$courseid = 1449; // ID of your course

// Read list.txt
$listfile = __DIR__ . '/list.txt';
if (!file_exists($listfile)) {
    cli_error("File list.txt not found.");
}
$lines = file($listfile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$total = count($lines);

if ($total === 0) {
    cli_error("list.txt is empty.");
}

echo "Renaming topics for course ID {$courseid}...\n";

// Fetch all course sections
$sections = $DB->get_records('course_sections', ['course' => $courseid]);

foreach ($sections as $section) {
    $sectionnum = $section->section;

    if ($sectionnum < $total) {
        $newname = trim($lines[$sectionnum]);

        if ($newname !== '') {
            // Prepare data to update
            $data = ['name' => $newname];

            // Call Moodle API with 3 arguments
            course_update_section($courseid, $section, $data);

            echo "Section {$sectionnum} renamed to: {$newname}\n";
        } else {
            echo "Section {$sectionnum}: Skipped (empty line).\n";
        }
    } else {
        echo "Section {$sectionnum}: No corresponding line in list.txt.\n";
    }
}

echo "Done.\n";