<?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/>.

/**
 * User sync test cases.
 *
 * @package local_o365
 * @author James McQuillan <james.mcquillan@remote-learner.net>
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @copyright (C) 2014 onwards Microsoft, Inc. (http://microsoft.com/)
 */

namespace local_o365;

use advanced_testcase;
use local_o365\feature\usersync\main;
use local_o365\oauth2\token;
use local_o365\rest\unified;
use local_o365\tests\mockhttpclient;

/**
 * Tests \local_o365\feature\usersync\main.
 *
 * @group local_o365
 * @group office365
 */
final class usersync_test extends advanced_testcase {
    /**
     * Perform setup before every test. This tells Moodle's phpunit to reset the database after every test.
     */
    protected function setUp(): void {
        parent::setUp();
        $this->resetAfterTest(true);
    }

    /**
     * Get a mock token object to use when constructing the API client.
     *
     * @return token The mock token object.
     */
    protected function get_mock_clientdata() {
        $oidcconfig = (object) [
            'clientid' => 'clientid',
            'clientsecret' => 'clientsecret',
            'authendpoint' => 'http://example.com/auth',
            'tokenendpoint' => 'http://example.com/token',
        ];

        $clientdata = new \local_o365\oauth2\clientdata(
            $oidcconfig->clientid,
            $oidcconfig->clientsecret,
            $oidcconfig->authendpoint,
            $oidcconfig->tokenendpoint
        );

        return $clientdata;
    }

    /**
     * Get a mock token object to use when constructing the API client.
     *
     * @return token The mock token object.
     */
    protected function get_mock_token() {
        $httpclient = new mockhttpclient();

        $tokenrec = (object) [
            'token' => 'token',
            'expiry' => time() + 1000,
            'refreshtoken' => 'refreshtoken',
            'scope' => 'scope',
            'user_id' => '2',
            'tokenresource' => 'resource',
        ];

        $clientdata = $this->get_mock_clientdata();
        $token = new token(
            $tokenrec->token,
            $tokenrec->expiry,
            $tokenrec->refreshtoken,
            $tokenrec->scope,
            $tokenrec->tokenresource,
            $tokenrec->user_id,
            $clientdata,
            $httpclient
        );

        return $token;
    }

    /**
     * Get sample Microsoft Entra ID userdata.
     *
     * @param int $i A counter to generate unique data.
     * @return array Array of Microsoft Entra ID user data.
     */
    protected function get_entra_id_userinfo($i = 0) {
        return [
            'odata.type' => 'Microsoft.WindowsAzure.ActiveDirectory.User',
            'objectType' => 'User',
            'objectId' => '00000000-0000-0000-0000-00000000000' . $i,
            'id' => '00000000-0000-0000-0000-00000000000' . $i,
            'city' => 'Toronto',
            'country' => ($i == 3) ? 'Canada' : 'CA',
            'department' => 'Dev',
            'givenName' => 'Test',
            'mail' => 'testuser' . $i . '@example.onmicrosoft.com',
            'surname' => 'User' . $i,
            'preferredLanguage' => ($i == 3) ? 'sa-IN' : 'en-US',
            'userPrincipalName' => 'testuser' . $i . '@example.onmicrosoft.com',
        ];
    }

    /**
     * Dataprovider for test_create_user_from_entra_id_data.
     *
     * @return array Array of test parameters.
     */
    public static function dataprovider_create_user_from_entra_id_data(): array {
        global $CFG;
        $tests = [];

        $tests['fulldata'] = [
            [
                'odata.type' => 'Microsoft.WindowsAzure.ActiveDirectory.User',
                'objectType' => 'User',
                'objectId' => '00000000-0000-0000-0000-000000000001',
                'id' => '00000000-0000-0000-0000-000000000001',
                'city' => 'Toronto',
                'country' => 'CA',
                'department' => 'Dev',
                'givenName' => 'Test',
                'mail' => 'testuser1@example.onmicrosoft.com',
                'surname' => 'User1',
                'userPrincipalName' => 'testuser1@example.onmicrosoft.com',
                'useridentifier' => 'testuser1@example.onmicrosoft.com',
                'useridentifierlower' => 'testuser1@example.onmicrosoft.com',
                'upnsplit0' => 'testuser1',
            ],
            [
                'auth' => 'oidc',
                'username' => 'testuser1@example.onmicrosoft.com',
                'firstname' => 'Test',
                'lastname' => 'User1',
                'email' => 'testuser1@example.onmicrosoft.com',
                'city' => 'Toronto',
                'country' => 'CA',
                'department' => 'Dev',
                'lang' => 'en',
                'confirmed' => '1',
                'deleted' => '0',
                'mnethostid' => $CFG->mnet_localhost_id,
            ],
        ];

        $tests['nocity'] = [
            [
                'odata.type' => 'Microsoft.WindowsAzure.ActiveDirectory.User',
                'objectType' => 'User',
                'objectId' => '00000000-0000-0000-0000-000000000002',
                'id' => '00000000-0000-0000-0000-000000000002',
                'country' => 'CA',
                'department' => 'Dev',
                'givenName' => 'Test',
                'mail' => 'testuser2@example.onmicrosoft.com',
                'surname' => 'User2',
                'userPrincipalName' => 'testuser2@example.onmicrosoft.com',
                'useridentifier' => 'testuser2@example.onmicrosoft.com',
                'useridentifierlower' => 'testuser2@example.onmicrosoft.com',
                'upnsplit0' => 'testuser2',
            ],
            [
                'auth' => 'oidc',
                'username' => 'testuser2@example.onmicrosoft.com',
                'firstname' => 'Test',
                'lastname' => 'User2',
                'email' => 'testuser2@example.onmicrosoft.com',
                'city' => '',
                'country' => 'CA',
                'department' => 'Dev',
                'lang' => 'en',
                'confirmed' => '1',
                'deleted' => '0',
                'mnethostid' => $CFG->mnet_localhost_id,
            ],
        ];

        $tests['nocountry'] = [
            [
                'odata.type' => 'Microsoft.WindowsAzure.ActiveDirectory.User',
                'objectType' => 'User',
                'objectId' => '00000000-0000-0000-0000-000000000003',
                'id' => '00000000-0000-0000-0000-000000000003',
                'department' => 'Dev',
                'givenName' => 'Test',
                'mail' => 'testuser3@example.onmicrosoft.com',
                'surname' => 'User3',
                'userPrincipalName' => 'testuser3@example.onmicrosoft.com',
                'useridentifier' => 'testuser3@example.onmicrosoft.com',
                'useridentifierlower' => 'testuser3@example.onmicrosoft.com',
                'upnsplit0' => 'testuser3',
            ],
            [
                'auth' => 'oidc',
                'username' => 'testuser3@example.onmicrosoft.com',
                'firstname' => 'Test',
                'lastname' => 'User3',
                'email' => 'testuser3@example.onmicrosoft.com',
                'city' => '',
                'country' => '',
                'department' => 'Dev',
                'lang' => 'en',
                'confirmed' => '1',
                'deleted' => '0',
                'mnethostid' => $CFG->mnet_localhost_id,
            ],
        ];

        $tests['nodepartment'] = [
            [
                'odata.type' => 'Microsoft.WindowsAzure.ActiveDirectory.User',
                'objectType' => 'User',
                'objectId' => '00000000-0000-0000-0000-000000000004',
                'id' => '00000000-0000-0000-0000-000000000004',
                'givenName' => 'Test',
                'mail' => 'testuser4@example.onmicrosoft.com',
                'surname' => 'User4',
                'userPrincipalName' => 'testuser4@example.onmicrosoft.com',
                'useridentifier' => 'testuser4@example.onmicrosoft.com',
                'useridentifierlower' => 'testuser4@example.onmicrosoft.com',
                'upnsplit0' => 'testuser4',
            ],
            [
                'auth' => 'oidc',
                'username' => 'testuser4@example.onmicrosoft.com',
                'firstname' => 'Test',
                'lastname' => 'User4',
                'email' => 'testuser4@example.onmicrosoft.com',
                'city' => '',
                'country' => '',
                'department' => '',
                'lang' => 'en',
                'confirmed' => '1',
                'deleted' => '0',
                'mnethostid' => $CFG->mnet_localhost_id,
            ],
        ];

        return $tests;
    }

    /**
     * Test create_user_from_entra_id_data method.
     *
     * @dataProvider dataprovider_create_user_from_entra_id_data
     * @param array $entraiddata The Microsoft Entra ID user data to create the user from.
     * @param array $expecteduser The expected user data to be created.
     * @covers \local_o365\feature\usersync\main::create_user_from_entra_id_data
     */
    public function test_create_user_from_entra_id_data($entraiddata, $expecteduser): void {
        global $DB;

        $httpclient = new mockhttpclient();
        $clientdata = $this->get_mock_clientdata();
        $usersync = new main($clientdata, $httpclient);
        $usersync->create_user_from_entra_id_data($entraiddata, []);

        $userparams = ['auth' => 'oidc', 'username' => $entraiddata['mail'], 'firstname' => $entraiddata['givenName'],
            'lastname' => $entraiddata['surname']];
        $this->assertTrue($DB->record_exists('user', $userparams));
        $createduser = $DB->get_record('user', $userparams);

        foreach ($expecteduser as $k => $v) {
            $this->assertEquals($v, $createduser->$k);
        }
    }

    /**
     * Test sync_users method when creating users.
     *
     * @covers \local_o365\feature\usersync\main::sync_users
     */
    public function test_sync_users_create(): void {
        global $CFG, $DB;

        set_config('usersync', 'create', 'local_o365');
        for ($i = 1; $i <= 2; $i++) {
            $muser = [
                'auth' => 'oidc',
                'deleted' => '0',
                'mnethostid' => $CFG->mnet_localhost_id,
                'username' => 'testuser' . $i . '@example.onmicrosoft.com',
                'firstname' => 'Test',
                'lastname' => 'User' . $i,
                'email' => 'testuser' . $i . '@example.onmicrosoft.com',
                'lang' => 'en',
            ];
            $muser['id'] = $DB->insert_record('user', (object) $muser);

            $token = [
                'oidcuniqid' => '00000000-0000-0000-0000-00000000000' . $i,
                'authcode' => '000',
                'username' => 'testuser' . $i . '@example.onmicrosoft.com',
                'userid' => $muser['id'],
                'scope' => 'test',
                'tokenresource' => unified::get_tokenresource(),
                'token' => '000',
                'expiry' => '9999999999',
                'refreshtoken' => 'fsdfsdf' . $i,
                'idtoken' => 'sdfsdfsdf' . $i,
            ];
            $DB->insert_record('auth_oidc_token', (object) $token);
        }

        $response = [
            'value' => [
                $this->get_entra_id_userinfo(1),
                $this->get_entra_id_userinfo(3),
            ],
        ];
        $response = json_encode($response);
        $clientdata = $this->get_mock_clientdata();
        $httpclient = new mockhttpclient();
        $httpclient->set_response($response);

        $apiclient = new unified($this->get_mock_token(), $httpclient);
        $usersync = new main($clientdata, $httpclient);
        $users = $apiclient->get_users();
        $usersync->sync_users($users);

        $existinguser = ['auth' => 'oidc', 'username' => 'testuser1@example.onmicrosoft.com'];
        $this->assertTrue($DB->record_exists('user', $existinguser));

        $createduser = ['auth' => 'oidc', 'username' => 'testuser3@example.onmicrosoft.com'];
        $this->assertTrue($DB->record_exists('user', $createduser));

        $createduser = $DB->get_record('user', $createduser);
        $this->assertEquals('Test', $createduser->firstname);
        $this->assertEquals('User3', $createduser->lastname);
        $this->assertEquals('testuser3@example.onmicrosoft.com', $createduser->email);
        $this->assertEquals('Toronto', $createduser->city);
        $this->assertEquals('CA', $createduser->country);
        $this->assertEquals('Dev', $createduser->department);
        $this->assertEquals('en', $createduser->lang);
    }
}
