MDL-78575 mod_lti: add course tool editing form as standalone page

This handles create/edit of course tools. Deletion will be supported via
an action and modal confirm on the coursetools listing page.

mod/lti/coursetooledit.php

@@ -0,0 +1,90 @@
+<?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/>.
+
+/**
+ * Page allowing instructors to configure course-level tools.
+ *
+ * @package    mod_lti
+ * @copyright  2023 Jake Dallimore <jrhdallimore@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+use core\output\notification;
+
+require_once('../../config.php');
+require_once($CFG->dirroot.'/mod/lti/edit_form.php');
+require_once($CFG->dirroot.'/mod/lti/lib.php');
+
+$courseid = required_param('course', PARAM_INT);
+$typeid = optional_param('typeid', null, PARAM_INT);
+
+// Permissions etc.
+require_login($courseid, false);
+require_capability('mod/lti:addcoursetool', context_course::instance($courseid));
+if (!empty($typeid)) {
+    $type = lti_get_type($typeid);
+    if ($type->course != $courseid || $type->course == get_site()->id) {
+        throw new moodle_exception('You do not have permissions to edit this tool type.');
+    }
+}
+
+// Page setup.
+$url = new moodle_url('/mod/lti/coursetooledit.php', ['courseid' => $courseid]);
+$PAGE->set_url($url);
+$PAGE->set_pagelayout('incourse');
+$PAGE->set_title(get_string('edittype', 'mod_lti')); // TODO confirm with UX about use of 'edit preconfigured tool' for the title.
+$PAGE->set_secondary_active_tab('coursetools');
+$PAGE->add_body_class('limitedwidth');
+
+$type = !empty($typeid) ? lti_get_type_type_config($typeid) : (object) ['lti_clientid' => null];
+$pageheading = !empty($typeid) ? get_string('courseexternaltooleditheading', 'mod_lti') :
+    get_string('courseexternaltooladdheading', 'mod_lti');
+$form = new mod_lti_edit_types_form($url, (object)array('id' => $typeid, 'clientid' => $type->lti_clientid));
+
+if ($form->is_cancelled()) {
+
+    redirect(new moodle_url('/mod/lti/coursetools.php', ['id' => $courseid]));
+} else if ($data = $form->get_data()) {
+
+    require_sesskey();
+
+    if (!empty($data->typeid)) {
+        $type = (object) ['id' => $data->typeid];
+        lti_load_type_if_cartridge($data);
+        lti_update_type($type, $data);
+        $redirecturl = new moodle_url('/mod/lti/coursetools.php', ['id' => $courseid]);
+        $notice = get_string('courseexternaltooleditsuccess', 'mod_lti', $type->name);
+    } else {
+        $type = (object) ['state' => LTI_TOOL_STATE_CONFIGURED, 'course' => $data->course];
+        lti_load_type_if_cartridge($data);
+        lti_add_type($type, $data);
+        $redirecturl = new moodle_url('/mod/lti/coursetools.php', ['id' => $courseid]);
+        $notice = get_string('courseexternaltooladdsuccess', 'mod_lti', $type->name);
+    }
+
+    redirect($redirecturl, $notice, 0, notification::NOTIFY_SUCCESS);
+}
+
+// Display the form.
+echo $OUTPUT->header();
+echo $OUTPUT->heading($pageheading);
+
+if (!empty($typeid)) {
+    $form->set_data($type);
+}
+$form->display();
+
+echo $OUTPUT->footer();

mod/lti/lang/en/lti.php

@@ -117,6 +117,10 @@
 $string['contentitem_multiple_graded'] = 'Graded activity (Maximum grade: {$a})';
 $string['course_tool_types'] = 'Course tools';
 $string['courseactivitiesorresources'] = 'Course activities or resources';
+$string['courseexternaltooladdheading'] = 'Add new LTI External tool'; // TODO confirm wording with UX.
+$string['courseexternaltooladdsuccess'] = 'Successfully added course tool \'{$a}\'.'; // TODO confirm wording with UX.
+$string['courseexternaltooleditheading'] = 'Edit LTI External tool'; // TODO confirm wording with UX.
+$string['courseexternaltooleditsuccess'] = 'The changes to the course tool \'{$a}\' were saved.'; // TODO confirm wording with UX.
 $string['courseexternaltooliconalt'] = 'Icon for the \'{$a}\' LTI External tool'; // TODO: confirm wording with UX.
 $string['courseexternaltools'] = 'LTI External tools'; // TODO: confirm wording with UX.
 $string['courseexternaltoolsinfo'] = 'LTI External tools are add-on apps you can integrate into your course, such as interactive content or assessments. Your students can access and use them without leaving your course.'; // TODO: confirm wording with UX.