<?php
declare(strict_types=1);

namespace Cf7stg\Tests;

final class UpdateCheckerIntegrationTest extends Cf7stgTestCase
{
    private const PLUGIN_ROOT = __DIR__ . '/..';
    private const PUC_LOADER = self::PLUGIN_ROOT . '/includes/lib/plugin-update-checker/plugin-update-checker.php';
    private const WP_PLUGIN_INFO_JSON = self::PLUGIN_ROOT . '/wp-plugin-info.json';
    private const PLUGIN_MAIN_FILE = self::PLUGIN_ROOT . '/cf7-spam-to-telegram.php';

    public function test_puc_loader_file_exists(): void
    {
        self::assertFileExists(self::PUC_LOADER);
    }

    public function test_puc_factory_class_loadable_after_require(): void
    {
        require_once self::PUC_LOADER;
        self::assertTrue(
            class_exists('YahnisElsts\\PluginUpdateChecker\\v5\\PucFactory'),
            'PucFactory must be loadable after requiring the PUC loader'
        );
    }

    public function test_wp_plugin_info_json_is_valid(): void
    {
        self::assertFileExists(self::WP_PLUGIN_INFO_JSON);
        $data = json_decode(file_get_contents(self::WP_PLUGIN_INFO_JSON), true);
        self::assertIsArray($data, 'wp-plugin-info.json must be valid JSON');
        foreach (['name', 'slug', 'version', 'download_url', 'sections'] as $required) {
            self::assertArrayHasKey($required, $data, "missing required key: $required");
        }
        self::assertSame('cf7-spam-to-telegram', $data['slug']);
        self::assertIsArray($data['sections']);
        self::assertArrayHasKey('description', $data['sections']);
        self::assertArrayHasKey('changelog', $data['sections']);
    }

    public function test_wp_plugin_info_json_version_matches_plugin_constant(): void
    {
        $data = json_decode(file_get_contents(self::WP_PLUGIN_INFO_JSON), true);
        $jsonVersion = $data['version'];

        $phpSource = file_get_contents(self::PLUGIN_MAIN_FILE);
        preg_match("/define\\('CF7STG_VERSION',\\s*'([^']+)'\\)/", $phpSource, $m);
        self::assertNotEmpty($m[1] ?? null, 'CF7STG_VERSION constant must be defined in plugin main file');

        self::assertSame(
            $m[1],
            $jsonVersion,
            'wp-plugin-info.json::version must match CF7STG_VERSION in cf7-spam-to-telegram.php'
        );
    }

    public function test_wp_plugin_info_json_download_url_contains_expected_asset_name(): void
    {
        $data = json_decode(file_get_contents(self::WP_PLUGIN_INFO_JSON), true);
        $expectedAssetName = 'cf7-spam-to-telegram-' . $data['version'] . '.zip';
        self::assertStringContainsString(
            $expectedAssetName,
            $data['download_url'],
            "download_url must contain expected asset name $expectedAssetName"
        );
    }

    public function test_plugin_class_has_register_update_checker_method(): void
    {
        self::assertTrue(
            method_exists('\\Cf7stg\\Plugin', 'register_update_checker'),
            'Plugin class must expose register_update_checker()'
        );
        $ref = new \ReflectionMethod('\\Cf7stg\\Plugin', 'register_update_checker');
        self::assertTrue($ref->isStatic(), 'register_update_checker must be static');
        self::assertTrue($ref->isPrivate(), 'register_update_checker must be private');
    }
}