<?php
declare(strict_types=1);

namespace Unsupervised\Schedular\Tests\Unit\Auth;

use Brain\Monkey\Functions;
use Mockery;
use Unsupervised\Schedular\Auth\RegistrationLoginGate;
use Unsupervised\Schedular\Auth\RegistrationStatus;
use Unsupervised\Schedular\Auth\RoleManager;
use Unsupervised\Schedular\Tests\Unit\TestCase;

class RegistrationLoginGateTest extends TestCase
{
    /**
     * Stub get_user_meta to describe a single account's pending state.
     */
    private function stubMeta(string $awaiting, string $confirmed): void
    {
        Functions\when('get_user_meta')->alias(static function (int $id, string $key) use ($awaiting, $confirmed) {
            if ($key === RegistrationStatus::META_AWAITING_APPROVAL) {
                return $awaiting;
            }
            if ($key === RegistrationStatus::META_EMAIL_CONFIRMED) {
                return $confirmed;
            }
            return '';
        });
    }

    private function user(int $id): \WP_User
    {
        $user     = Mockery::mock(\WP_User::class);
        $user->ID = $id;

        return $user;
    }

    public function testBlocksLoginWhileEmailUnconfirmed(): void
    {
        $this->stubMeta('1', '');

        $result = (new RegistrationLoginGate())->blockUnconfirmed($this->user(7));

        self::assertInstanceOf(\WP_Error::class, $result);
        self::assertSame('us_email_unconfirmed', $result->get_error_code());
    }

    public function testAllowsLoginWhenConfirmedButAwaitingApproval(): void
    {
        $this->stubMeta('1', '1');

        $user = $this->user(7);

        self::assertSame($user, (new RegistrationLoginGate())->blockUnconfirmed($user));
    }

    public function testAllowsLoginForApprovedStudent(): void
    {
        $this->stubMeta('', '1');

        $user = $this->user(7);

        self::assertSame($user, (new RegistrationLoginGate())->blockUnconfirmed($user));
    }

    public function testIgnoresUsersWithNoPendingMeta(): void
    {
        // Invite/admin-created students carry no meta at all.
        $this->stubMeta('', '');

        $user = $this->user(7);

        self::assertSame($user, (new RegistrationLoginGate())->blockUnconfirmed($user));
    }

    public function testPassesThroughAnEarlierError(): void
    {
        $error = new \WP_Error('some_earlier_error', 'nope');

        self::assertSame($error, (new RegistrationLoginGate())->blockUnconfirmed($error));
    }

    public function testWithholdsBookingCapWhileAwaitingApproval(): void
    {
        $this->stubMeta('1', '1');

        $allcaps = [ RoleManager::CAP_BOOK_LESSON => true, 'read' => true ];

        $result = (new RegistrationLoginGate())
            ->withholdBookingWhilePending($allcaps, [], [], $this->user(7));

        self::assertArrayNotHasKey(RoleManager::CAP_BOOK_LESSON, $result);
        self::assertTrue($result['read']);
    }

    public function testKeepsBookingCapForApprovedStudent(): void
    {
        $this->stubMeta('', '1');

        $allcaps = [ RoleManager::CAP_BOOK_LESSON => true ];

        $result = (new RegistrationLoginGate())
            ->withholdBookingWhilePending($allcaps, [], [], $this->user(7));

        self::assertTrue($result[RoleManager::CAP_BOOK_LESSON]);
    }

    public function testLeavesCapsUntouchedForNonUserArg(): void
    {
        $allcaps = [ RoleManager::CAP_BOOK_LESSON => true ];

        $result = (new RegistrationLoginGate())
            ->withholdBookingWhilePending($allcaps, [], [], null);

        self::assertSame($allcaps, $result);
    }
}