From 6187213f39598a526d3813382963ebde86338aac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Mudr=C3=A1k?= <david@moodle.com>
Date: Mon, 11 Mar 2019 14:11:17 +0100
Subject: [PATCH] MDL-61667 analytics: Add method to actually create a declared
 model

This is simply a wrapper around the model's create() method that works
with the model declaration syntax from the db/analytics.php file.
---
 analytics/classes/manager.php    | 32 ++++++++++++
 analytics/tests/manager_test.php | 85 ++++++++++++++++++++++++++++++++
 2 files changed, 117 insertions(+)

diff --git a/analytics/classes/manager.php b/analytics/classes/manager.php
index 7b41ee069b0..415784122aa 100644
--- a/analytics/classes/manager.php
+++ b/analytics/classes/manager.php
@@ -772,4 +772,36 @@ class manager {
             }
         }
     }
+
+    /**
+     * Create the defined model.
+     *
+     * @param array $definition See {@link self::validate_models_declaration()} for the syntax.
+     * @return \core_analytics\model
+     */
+    public static function create_declared_model(array $definition): \core_analytics\model {
+
+        $target = static::get_target($definition['target']);
+
+        $indicators = [];
+
+        foreach ($definition['indicators'] as $indicatorname) {
+            $indicator = static::get_indicator($indicatorname);
+            $indicators[$indicator->get_id()] = $indicator;
+        }
+
+        if (isset($definition['timesplitting'])) {
+            $timesplitting = $definition['timesplitting'];
+        } else {
+            $timesplitting = false;
+        }
+
+        $created = \core_analytics\model::create($target, $indicators, $timesplitting);
+
+        if (!empty($definition['enabled'])) {
+            $created->enable();
+        }
+
+        return $created;
+    }
 }
diff --git a/analytics/tests/manager_test.php b/analytics/tests/manager_test.php
index ce09c9e12c4..ab5708ac437 100644
--- a/analytics/tests/manager_test.php
+++ b/analytics/tests/manager_test.php
@@ -251,4 +251,89 @@ class analytics_manager_testcase extends advanced_testcase {
 
         return $models;
     }
+
+    /**
+     * Test the implementation of the {@link \core_analytics\manager::create_declared_model()}.
+     */
+    public function test_create_declared_model() {
+        global $DB;
+
+        $this->resetAfterTest();
+        $this->setAdminuser();
+
+        $declaration = [
+            'target' => 'test_target_course_level_shortname',
+            'indicators' => [
+                'test_indicator_max',
+                'test_indicator_min',
+                'test_indicator_fullname',
+            ],
+        ];
+
+        $declarationwithtimesplitting = array_merge($declaration, [
+            'timesplitting' => '\core\analytics\time_splitting\no_splitting',
+        ]);
+
+        $declarationwithtimesplittingenabled = array_merge($declarationwithtimesplitting, [
+            'enabled' => true,
+        ]);
+
+        // Check that no such model exists yet.
+        $target = \core_analytics\manager::get_target('test_target_course_level_shortname');
+        $this->assertEquals(0, $DB->count_records('analytics_models', ['target' => $target->get_id()]));
+
+        // Check that the model is created.
+        $created = \core_analytics\manager::create_declared_model($declaration);
+        $this->assertTrue($created instanceof \core_analytics\model);
+        $this->assertTrue(\core_analytics\model::exists($target));
+        $this->assertEquals(1, $DB->count_records('analytics_models', ['target' => $target->get_id()]));
+        $modelid = $created->get_id();
+
+        // Check that created models are disabled by default.
+        $existing = new \core_analytics\model($modelid);
+        $this->assertEquals(0, $existing->get_model_obj()->enabled);
+        $this->assertEquals(0, $DB->get_field('analytics_models', 'enabled', ['target' => $target->get_id()], MUST_EXIST));
+
+        // Let the admin enable the model.
+        $existing->enable('\core\analytics\time_splitting\no_splitting');
+        $this->assertEquals(1, $DB->get_field('analytics_models', 'enabled', ['target' => $target->get_id()], MUST_EXIST));
+
+        // Check that further calls create a new model.
+        $repeated = \core_analytics\manager::create_declared_model($declaration);
+        $this->assertTrue($repeated instanceof \core_analytics\model);
+        $this->assertEquals(2, $DB->count_records('analytics_models', ['target' => $target->get_id()]));
+
+        // Delete the models.
+        $existing->delete();
+        $repeated->delete();
+        $this->assertEquals(0, $DB->count_records('analytics_models', ['target' => $target->get_id()]));
+        $this->assertFalse(\core_analytics\model::exists($target));
+
+        // Create it again, this time with time splitting method specified.
+        $created = \core_analytics\manager::create_declared_model($declarationwithtimesplitting);
+        $this->assertTrue($created instanceof \core_analytics\model);
+        $this->assertTrue(\core_analytics\model::exists($target));
+        $this->assertEquals(1, $DB->count_records('analytics_models', ['target' => $target->get_id()]));
+        $modelid = $created->get_id();
+
+        // Even if the time splitting method was specified, the model is still not enabled automatically.
+        $existing = new \core_analytics\model($modelid);
+        $this->assertEquals(0, $existing->get_model_obj()->enabled);
+        $this->assertEquals(0, $DB->get_field('analytics_models', 'enabled', ['target' => $target->get_id()], MUST_EXIST));
+        $existing->delete();
+
+        // Let's define the model so that it is enabled by default.
+        $enabled = \core_analytics\manager::create_declared_model($declarationwithtimesplittingenabled);
+        $this->assertTrue($enabled instanceof \core_analytics\model);
+        $this->assertTrue(\core_analytics\model::exists($target));
+        $this->assertEquals(1, $DB->count_records('analytics_models', ['target' => $target->get_id()]));
+        $modelid = $enabled->get_id();
+        $existing = new \core_analytics\model($modelid);
+        $this->assertEquals(1, $existing->get_model_obj()->enabled);
+        $this->assertEquals(1, $DB->get_field('analytics_models', 'enabled', ['target' => $target->get_id()], MUST_EXIST));
+
+        // Let the admin disable the model.
+        $existing->update(0, false, false);
+        $this->assertEquals(0, $DB->get_field('analytics_models', 'enabled', ['target' => $target->get_id()], MUST_EXIST));
+    }
 }