<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\FastestCache;

use Brain\Monkey\Functions;
use LIT\MCP\Compatibility\Call;
use LIT\MCP\Compatibility\CheckStep;
use LIT\MCP\Compatibility\Compatibility;
use LIT\MCP\Compatibility\Tier;
use LIT\MCP\Integrations\Divi\Release\DiviProfile;
use LIT\MCP\Integrations\Pods\PodsCompatibility;
use LIT\MCP\Integrations\FastestCache\FastestCacheCheckSteps;
use LIT\MCP\Integrations\FastestCache\FastestCacheCompatibility;
use LIT\MCP\Integrations\FastestCache\FastestCacheFeature;
use LIT\MCP\Tests\Unit\TestCase;

final class FastestCacheCompatibilityTest extends TestCase
{
    public function testDescribesFastestCacheAsALockOnFailurePlugin(): void
    {
        $profile = FastestCacheCompatibility::profile();

        self::assertSame('wpfc', $profile->id);
        self::assertSame('WP Fastest Cache', $profile->label);
        self::assertSame(Tier::LockOnFailure, $profile->tier);
        self::assertSame(['1.5.5'], $profile->testedVersions);
        self::assertNull($profile->minVersion);
        self::assertSame(FastestCacheFeature::cases(), $profile->capabilities);
    }

    /** Argument counts are those the purger and the probe pass. */
    public function testTheManifestHoldsTheTwoPurgeFunctionsWithTheirArgumentCounts(): void
    {
        $manifest = FastestCacheCompatibility::profile()->manifests[0];
        $calls = [];
        foreach ($manifest->calls as $call) {
            $calls[$call->symbol] = [$call->args, $call->features()];
        }

        self::assertSame([
            'wpfc_clear_post_cache_by_id' => [1, [FastestCacheFeature::PurgePost]],
            'wpfc_clear_all_cache' => [0, [FastestCacheFeature::PurgeAll]],
            'WpFastestCache::singleDeleteCache' => [3, [FastestCacheFeature::PurgePost]],
            'WpFastestCache::getWpContentDir' => [1, [FastestCacheFeature::PurgePost]],
        ], $calls);
        self::assertContainsOnlyInstancesOf(Call::class, $manifest->calls);
    }

    /** The instance that hooks the purge actions and the decoded options with the cache switch. */
    public function testTheGlobalsTheFunctionsReadAreRequired(): void
    {
        $manifest = FastestCacheCompatibility::profile()->manifests[0];

        self::assertSame(['WPFC_MAIN_PATH'], array_map(static fn ($c) => $c->name, $manifest->constants));
        $globals = [];
        foreach ($manifest->globals as $global) {
            $globals[$global->name] = $global->features();
        }
        self::assertSame(
            ['wp_fastest_cache' => FastestCacheFeature::cases(), 'wp_fastest_cache_options' => FastestCacheFeature::cases()],
            $globals
        );
    }

    /**
     * @runInSeparateProcess
     * @preserveGlobalState disabled
     */
    public function testActiveAndVersionFollowTheMainPathConstantAndThePluginHeader(): void
    {
        $profile = FastestCacheCompatibility::profile();
        self::assertFalse(($profile->active)());
        self::assertNull(($profile->version)());

        define('WPFC_MAIN_PATH', '/plugins/wp-fastest-cache/');
        Functions\expect('get_file_data')
            ->once()
            ->with('/plugins/wp-fastest-cache/wpFastestCache.php', ['Version' => 'Version'])
            ->andReturn(['Version' => '1.5.5']);

        self::assertTrue(($profile->active)());
        self::assertSame('1.5.5', ($profile->version)());
    }

    /**
     * @runInSeparateProcess
     * @preserveGlobalState disabled
     */
    public function testAnUnreadableHeaderIsAnUnknownVersion(): void
    {
        define('WPFC_MAIN_PATH', '/plugins/wp-fastest-cache/');
        Functions\when('get_file_data')->justReturn(['Version' => '']);

        self::assertNull((FastestCacheCompatibility::profile()->version)());
    }

    public function testTheCheckHasTheProbeAsExtraStep(): void
    {
        $profile = FastestCacheCompatibility::profile();

        self::assertNotNull($profile->extraSteps);
        $steps = ($profile->extraSteps)(false);
        self::assertSame([FastestCacheCheckSteps::PROBE], array_map(static fn ($step): string => $step->key, $steps));
        self::assertTrue($steps[0]->skipped);
        self::assertNotNull($profile->stepLabel);
        self::assertSame(
            'Leeren-Test an einer Wegwerf-Seite im Cache',
            ($profile->stepLabel)(new CheckStep(FastestCacheCheckSteps::PROBE, []))
        );
    }

    public function testTheCacheIsOnlyEnabledWhileTheSwitchInTheDecodedOptionsIsOn(): void
    {
        unset($GLOBALS['wp_fastest_cache_options']);
        self::assertFalse(FastestCacheCompatibility::cacheEnabled());
        $GLOBALS['wp_fastest_cache_options'] = [];
        self::assertFalse(FastestCacheCompatibility::cacheEnabled(), 'WPFC stores [] when the option is missing');
        $GLOBALS['wp_fastest_cache_options'] = (object) ['wpFastestCacheMinifyHtml' => 'on'];
        self::assertFalse(FastestCacheCompatibility::cacheEnabled());
        $GLOBALS['wp_fastest_cache_options'] = (object) ['wpFastestCacheStatus' => 'on'];
        self::assertTrue(FastestCacheCompatibility::cacheEnabled());
        unset($GLOBALS['wp_fastest_cache_options']);
    }

    public function testAllProfilesCoexistWithoutIdCollision(): void
    {
        $compatibility = new Compatibility(
            [DiviProfile::profile(), PodsCompatibility::profile(), FastestCacheCompatibility::profile()]
        );

        self::assertSame(['divi', 'pods', 'wpfc'], array_map(static fn ($p) => $p->id, $compatibility->profiles()));
        self::assertSame(FastestCacheFeature::PurgeAll, $compatibility->capability('wpfc-purge-all'));
    }
}