<?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/>.

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

global $CFG;

require_once($CFG->dirroot . '/local/webhooks/externallib.php');
require_once($CFG->dirroot . '/webservice/tests/helpers.php');

use local_webhooks\local\api;
use local_webhooks\local\record;

/**
 * Testing external functions.
 *
 * @copyright 2019 'Valentin Popov' <info@valentineus.link>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
final class local_webhooks_external_testcase extends externallib_advanced_testcase {
    /**
     * Generate random an event's list.
     *
     * @return array
     *
     * @throws \ReflectionException
     */
    private static function get_random_events(): array {
        $result = array_rand(api::get_events(), random_int(2, 10));

        return is_array($result) ? $result : [];
    }

    /**
     * Generate a random record.
     *
     * @return \local_webhooks\local\record
     *
     * @throws \ReflectionException
     */
    private static function get_random_record(): record {
        $record = new record();

        $record->events = self::get_random_events();
        $record->header = 'application/json';
        $record->name = uniqid('', false);
        $record->point = 'http://example.org/' . urlencode($record->name);
        $record->status = true;
        $record->token = generate_uuid();

        return $record;
    }

    /**
     * Testing external add service.
     *
     * @throws \ReflectionException
     * @throws \coding_exception
     * @throws \dml_exception
     * @throws \invalid_parameter_exception
     * @throws \invalid_response_exception
     * @throws \restricted_context_exception
     */
    public function test_adding() {
        $this->resetAfterTest();
        self::setAdminUser();

        $record = self::get_random_record();
        $return = local_webhooks_external::add_service((array) $record);
        $return = external_api::clean_returnvalue(local_webhooks_external::add_service_returns(), $return);

        self::assertInternalType('integer', $return);
        self::assertEquals(1, api::get_total_count());

        $service = api::get_service($return);
        self::assertEquals($record->header, $service->header);
        self::assertEquals($record->name, $service->name);
        self::assertEquals($record->point, $service->point);
        self::assertEquals($record->status, $service->status);
        self::assertEquals($record->token, $service->token);
        self::assertEquals($return, $service->id);

        self::assertInternalType('array', $service->events);
        self::assertCount(count($record->events), $service->events);
        foreach ($service->events as $event) {
            self::assertContains($event, $record->events);
        }
    }

    /**
     * Testing the external delete service.
     *
     * @throws \ReflectionException
     * @throws \coding_exception
     * @throws \dml_exception
     * @throws \invalid_parameter_exception
     * @throws \invalid_response_exception
     * @throws \restricted_context_exception
     */
    public function test_deleting() {
        $this->resetAfterTest();
        self::setAdminUser();

        // Testing correct delete record of the database.
        $record = self::get_random_record();
        $record->id = api::add_service($record);

        $return = local_webhooks_external::del_service($record->id);
        $return = external_api::clean_returnvalue(local_webhooks_external::del_service_returns(), $return);

        self::assertEquals(0, api::get_total_count());
        self::assertInternalType('bool', $return);

        $ids = [];
        $total = random_int(5, 20);

        // Testing correct delete record of the record's list.
        for ($i = 0; $i < $total; $i++) {
            $record = self::get_random_record();
            $ids[] = api::add_service($record);
        }

        self::assertEquals(count($ids), api::get_total_count());
        $return = local_webhooks_external::del_service($ids[array_rand($ids, 1)]);
        $return = external_api::clean_returnvalue(local_webhooks_external::del_service_returns(), $return);

        self::assertEquals(count($ids) - 1, api::get_total_count());
        self::assertInternalType('bool', $return);
    }

    /**
     * Testing external get record's data.
     *
     * @throws \ReflectionException
     * @throws \coding_exception
     * @throws \dml_exception
     * @throws \invalid_parameter_exception
     * @throws \invalid_response_exception
     * @throws \restricted_context_exception
     */
    public function test_get_service() {
        $this->resetAfterTest();
        self::setAdminUser();

        // Creating a new record.
        $record = self::get_random_record();
        $record->id = api::add_service($record);

        $return = local_webhooks_external::get_service($record->id);
        $return = external_api::clean_returnvalue(local_webhooks_external::get_service_returns(), $return);
        self::assertInternalType('array', $return);

        // Testing the main fields.
        self::assertEquals($record->header, $return['header']);
        self::assertEquals($record->id, $return['id']);
        self::assertEquals($record->name, $return['name']);
        self::assertEquals($record->point, $return['point']);
        self::assertEquals($record->status, (int) $return['status']);
        self::assertEquals($record->token, $return['token']);

        // Testing an event's list.
        self::assertInternalType('array', $return['events']);
        self::assertNotCount(0, $return['events']);
        foreach ($return['events'] as $event) {
            self::assertContains($event, $record->events);
        }
    }

    /**
     * Testing external get the record's list.
     *
     * @throws \ReflectionException
     * @throws \coding_exception
     * @throws \dml_exception
     * @throws \invalid_parameter_exception
     * @throws \invalid_response_exception
     * @throws \restricted_context_exception
     */
    public function test_get_services() {
        $this->resetAfterTest();
        self::setAdminUser();

        $records = [];
        $total = random_int(5, 10);

        // Creating some records.
        for ($i = 0; $i < $total; $i++) {
            $record = self::get_random_record();
            $record->id = api::add_service($record);
            $records[$record->id] = $record;
        }

        self::assertEquals(count($records), api::get_total_count());

        $return = local_webhooks_external::get_services();
        $return = external_api::clean_returnvalue(local_webhooks_external::get_services_returns(), $return);

        // Testing received item's list.
        self::assertInternalType('array', $return);
        self::assertCount(count($records), $return);

        foreach ($return as $item) {
            self::assertInternalType('array', $item);

            $record = $records[$item['id']];

            self::assertEquals($record->header, $item['header']);
            self::assertEquals($record->id, $item['id']);
            self::assertEquals($record->name, $item['name']);
            self::assertEquals($record->point, $item['point']);
            self::assertEquals($record->status, (int) $item['status']);
            self::assertEquals($record->token, $item['token']);

            self::assertInternalType('array', $item['events']);
            self::assertNotCount(0, $item['events']);
            foreach ($item['events'] as $event) {
                self::assertContains($event, $record->events);
            }
        }
    }

    /**
     * Testing external get to the list services with conditions.
     *
     * @throws \ReflectionException
     * @throws \coding_exception
     * @throws \dml_exception
     * @throws \invalid_parameter_exception
     * @throws \invalid_response_exception
     * @throws \restricted_context_exception
     */
    public function test_get_services_with_conditions() {
        $this->resetAfterTest();
        self::setAdminUser();

        $records = [];
        $total = random_int(5, 10);
        $limit = intdiv($total, 2);

        // Creating some records.
        for ($i = 0; $i < $total; $i++) {
            $record = self::get_random_record();
            $record->id = api::add_service($record);
            $records[$record->id] = $record;
        }

        self::assertEquals(count($records), api::get_total_count());

        // Testing condition fields.
        $record = $records[array_rand($records, 1)];
        $return = local_webhooks_external::get_services(['point' => $record->point]);
        $return = external_api::clean_returnvalue(local_webhooks_external::get_services_returns(), $return);

        self::assertCount(1, $return);
        self::assertEquals($return[0]['id'], $record->id);

        // Testing limit fields.
        $return = local_webhooks_external::get_services(null, null, 1, $limit);
        $return = external_api::clean_returnvalue(local_webhooks_external::get_services_returns(), $return);
        self::assertCount($limit, $return);

        // Testing sort fields.
        $return = local_webhooks_external::get_services(null, 'id asc');
        $return = external_api::clean_returnvalue(local_webhooks_external::get_services_returns(), $return);
        $service1 = array_shift($return);

        $return = local_webhooks_external::get_services(null, 'id desc');
        $return = external_api::clean_returnvalue(local_webhooks_external::get_services_returns(), $return);
        $service2 = array_shift($return);

        self::assertNotEquals($service1['id'], $service2['id']);
    }
}