<?php

/**
 * @package     MokoSuiteCross
 * @subpackage  Tests
 * @author      Moko Consulting <hello@mokoconsulting.tech>
 * @copyright   Copyright (C) 2026 Moko Consulting. All rights reserved.
 * @license     GNU General Public License version 3 or later; see LICENSE
 * SPDX-License-Identifier: GPL-3.0-or-later
 */

namespace MokoSuiteCross\Tests\Unit\Service;

use Joomla\Component\MokoSuiteCross\Administrator\Service\MokoSuiteCrossServiceInterface;
use PHPUnit\Framework\TestCase;

class ServiceInterfaceContractTest extends TestCase
{
    public function testInterfaceExists(): void
    {
        $this->assertTrue(interface_exists(MokoSuiteCrossServiceInterface::class));
    }

    public function testInterfaceDefinesRequiredMethods(): void
    {
        $reflection = new \ReflectionClass(MokoSuiteCrossServiceInterface::class);

        $expectedMethods = [
            'getServiceType',
            'getServiceName',
            'publish',
            'validateCredentials',
            'getMaxLength',
            'supportsMedia',
            'getSupportedMediaTypes',
        ];

        foreach ($expectedMethods as $method) {
            $this->assertTrue(
                $reflection->hasMethod($method),
                "Interface missing method: {$method}"
            );
        }
    }

    public function testGetServiceTypeReturnsString(): void
    {
        $method = new \ReflectionMethod(MokoSuiteCrossServiceInterface::class, 'getServiceType');
        $returnType = $method->getReturnType();

        $this->assertNotNull($returnType);
        $this->assertSame('string', $returnType->getName());
    }

    public function testPublishAcceptsCorrectParameters(): void
    {
        $method = new \ReflectionMethod(MokoSuiteCrossServiceInterface::class, 'publish');
        $params = $method->getParameters();

        $this->assertCount(4, $params);
        $this->assertSame('message', $params[0]->getName());
        $this->assertSame('media', $params[1]->getName());
        $this->assertSame('credentials', $params[2]->getName());
        $this->assertSame('params', $params[3]->getName());
    }

    public function testPublishReturnsArray(): void
    {
        $method = new \ReflectionMethod(MokoSuiteCrossServiceInterface::class, 'publish');
        $returnType = $method->getReturnType();

        $this->assertNotNull($returnType);
        $this->assertSame('array', $returnType->getName());
    }

    public function testGetMaxLengthReturnsInt(): void
    {
        $method = new \ReflectionMethod(MokoSuiteCrossServiceInterface::class, 'getMaxLength');
        $returnType = $method->getReturnType();

        $this->assertNotNull($returnType);
        $this->assertSame('int', $returnType->getName());
    }

    public function testSupportsMediaReturnsBool(): void
    {
        $method = new \ReflectionMethod(MokoSuiteCrossServiceInterface::class, 'supportsMedia');
        $returnType = $method->getReturnType();

        $this->assertNotNull($returnType);
        $this->assertSame('bool', $returnType->getName());
    }

    /**
     * @dataProvider servicePluginClassProvider
     */
    public function testServicePluginImplementsInterface(string $className): void
    {
        if (!class_exists($className)) {
            $this->markTestSkipped("Class {$className} not autoloadable (needs Joomla runtime)");
        }

        $this->assertTrue(
            is_subclass_of($className, MokoSuiteCrossServiceInterface::class),
            "{$className} does not implement MokoSuiteCrossServiceInterface"
        );
    }

    public static function servicePluginClassProvider(): array
    {
        $plugins = [
            'facebook', 'twitter', 'linkedin', 'mastodon', 'bluesky',
            'telegram', 'discord', 'slack', 'mailchimp', 'medium',
            'instagram', 'youtube', 'threads', 'pinterest', 'reddit',
        ];

        $cases = [];

        foreach ($plugins as $plugin) {
            $class = ucfirst($plugin);
            $cases[$plugin] = [
                "Joomla\\Plugin\\MokoSuiteCross\\{$class}\\Extension\\{$class}Service",
            ];
        }

        return $cases;
    }
}