<?php
define('CLI_SCRIPT', true);
require_once("../../config.php");
require_once($CFG->libdir . '/clilib.php');

$usage = "Export a certificate PDF

Usage:
    # php get_certificate.php --module=<htmlcert|customcert> --course=<value> --username=<value>
    # php get_certificate.php [--help|-h]

Options:
    -h --help               Print this help.
    --paramname=<value>     Describe the parameter and the meaning of its values.
";

list($options, $unrecognised) = cli_get_params([
    'help' => false,
    'module' => null,
    'course' => null,
    'username' => null,
], [
    'h' => 'help'
]);

if ($unrecognised) {
    $unrecognised = implode(PHP_EOL . '  ', $unrecognised);
    cli_error(get_string('cliunknowoption', 'core_admin', $unrecognised));
}

if ($options['help']) {
    cli_writeln($usage);
    exit(2);
}

if (empty($options['course'])) {
    cli_error('Missing mandatory argument course.', 2);
}

if (empty($options['username'])) {
    cli_error('Missing mandatory argument username.', 2);
}

try {
    $user = $DB->get_record('user', array('username' => $options['username']), "*", MUST_EXIST);
} catch (Exception $ex) {
    cli_error('User ' . $options['username'] . ' does not exist.');
}

try {
    $course = $DB->get_record('course', array('shortcode' => $options['course']), "*", MUST_EXIST);
} catch (Exception $ex) {
    cli_error('Course ' . $options['course'] . ' does not exist.');
}

try {
    $certificate = $DB->get_record($options['module'], array('course' => $course->id), "*", MUST_EXIST);
} catch (Exception $ex) {
    cli_error('Course ' . $options['course'] . ' does not have a ' . $options['module'] . ' certificate.');
}

$template = $DB->get_record($options['module'] . '_templates', array('id' => $certificate->templateid), "*", MUST_EXIST);

if ($options['module'] == 'customcert') {
    require_once("../../mod/customcert/classes/template.php");
    $template = new \mod_customcert\template($template);
} else {
    require_once("../../mod/htmlcert/classes/template.php");
    $template = new \mod_htmlcert\template($template);
}

try {
    $issue = $DB->get_record($options['module'] . '_issues', array($options['module'] . 'id' => $certificate->id, $options['userid'] => $user->id), "*", MUST_EXIST);
} catch (Exception $ex) {
    cli_error('User ' . $options['username'] . ' does not have the "' . $certificate->name . '" certificate.');
}

$output = $template->generate_pdf(false, $user->id, true);

cli_write($output);