<?php
declare(strict_types=1);

namespace Unsupervised\Schedular\Tests\Unit\Auth;

use Brain\Monkey\Functions;
use Mockery;
use Unsupervised\Schedular\Auth\RegistrationApprovalController;
use Unsupervised\Schedular\Auth\RegistrationMailer;
use Unsupervised\Schedular\Auth\RegistrationStatus;
use Unsupervised\Schedular\Tests\Unit\TestCase;

class RegistrationApprovalControllerTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        Functions\when('wp_unslash')->alias(static fn ($v) => $v);
        Functions\when('sanitize_key')->alias(static fn ($v) => $v);
        Functions\when('absint')->alias(static fn ($v) => (int) $v);
        $_POST = [];
    }

    protected function tearDown(): void
    {
        $_POST = [];
        parent::tearDown();
    }

    public function testRenderPageDiesWithoutCapability(): void
    {
        Functions\when('current_user_can')->justReturn(false);
        Functions\when('wp_die')->alias(static function (): void {
            throw new \RuntimeException('wp_die');
        });

        $this->expectException(\RuntimeException::class);

        (new RegistrationApprovalController(Mockery::mock(RegistrationMailer::class)))->renderPage();
    }

    public function testApproveClearsPendingMetaAndEmailsStudent(): void
    {
        $_POST = [ 'usc_action' => 'approve', 'user_id' => 7 ];

        Functions\when('get_user_meta')->justReturn('1'); // awaiting approval
        Functions\expect('delete_user_meta')->atLeast()->once();

        $user = Mockery::mock(\WP_User::class);
        Functions\when('get_user_by')->justReturn($user);

        $mailer = Mockery::mock(RegistrationMailer::class);
        $mailer->shouldReceive('sendApproved')->once()->with($user);

        $this->handleAction(new RegistrationApprovalController($mailer));
    }

    public function testRejectEmailsAndHardDeletesTheAccount(): void
    {
        $_POST = [ 'usc_action' => 'reject', 'user_id' => 7 ];

        Functions\when('get_user_meta')->justReturn('1'); // awaiting approval

        $user             = Mockery::mock(\WP_User::class);
        $user->user_email = 'a@b.test';
        Functions\when('get_user_by')->justReturn($user);

        $mailer = Mockery::mock(RegistrationMailer::class);
        $mailer->shouldReceive('sendRejected')->once()->with('a@b.test');

        Functions\expect('wp_delete_user')->once()->with(7);

        $this->handleAction(new RegistrationApprovalController($mailer));
    }

    public function testIgnoresUserNotAwaitingApproval(): void
    {
        $_POST = [ 'usc_action' => 'approve', 'user_id' => 7 ];

        Functions\when('get_user_meta')->justReturn(''); // not pending

        $mailer = Mockery::mock(RegistrationMailer::class);
        $mailer->shouldReceive('sendApproved')->never();

        $this->handleAction(new RegistrationApprovalController($mailer));

        // isAwaitingApproval guarded the action; nothing happened.
        self::assertFalse(RegistrationStatus::isAwaitingApproval(7));
    }

    private function handleAction(RegistrationApprovalController $controller): void
    {
        $method = new \ReflectionMethod(RegistrationApprovalController::class, 'handleAction');
        $method->invoke($controller);
    }
}