<?php

use App\Actions\Services\ResolveServiceImageDigest;
use App\Enums\ServiceCategory;
use App\Enums\ServiceType;
use App\Models\Network;
use App\Models\Organisation;
use App\Models\Provider;
use App\Models\Server;
use App\Models\Service;
use App\Services\Operations\RemoteCommandRunner;

it('resolves a service driver image tag to an immutable digest', function () {
    app()->instance(RemoteCommandRunner::class, new class implements RemoteCommandRunner
    {
        public string $script = '';

        public function run(Server $server, string $script): string
        {
            $this->script = $script;

            return "image_digest=postgres:18@sha256:resolveddigest\n";
        }
    });

    $service = Service::factory()->for(serviceDigestServer())->create([
        'category' => ServiceCategory::DATABASE,
        'type' => ServiceType::POSTGRES,
        'version' => '18',
        'version_track' => '18',
        'driver_name' => 'postgres.18',
        'credentials' => [
            'user' => 'keystone',
            'password' => 'secret',
            'db' => 'keystone',
        ],
    ]);

    expect(app(ResolveServiceImageDigest::class)->execute($service))->toBe('sha256:resolveddigest');
});

it('pulls the image before failing digest resolution when it is not present locally', function () {
    $runner = new class implements RemoteCommandRunner
    {
        public string $script = '';

        public function run(Server $server, string $script): string
        {
            $this->script = $script;

            return 'image_digest=valkey/valkey:8@sha256:pulleddigest';
        }
    };

    app()->instance(RemoteCommandRunner::class, $runner);

    $service = Service::factory()->for(serviceDigestServer())->create([
        'category' => ServiceCategory::CACHE,
        'type' => ServiceType::VALKEY,
        'version' => '8',
        'version_track' => '8',
        'driver_name' => 'valkey.8',
    ]);

    expect(app(ResolveServiceImageDigest::class)->execute($service))->toBe('sha256:pulleddigest')
        ->and($runner->script)->toContain('docker pull "$image"');
});

it('short circuits when the resolved image is already a sha256 digest', function () {
    $service = Service::factory()->for(serviceDigestServer())->create([
        'category' => ServiceCategory::DATABASE,
        'type' => ServiceType::POSTGRES,
        'version' => '18',
        'version_track' => '18',
        'driver_name' => 'postgres.18',
        'credentials' => [
            'user' => 'keystone',
            'password' => 'secret',
            'db' => 'keystone',
        ],
        'available_image_digest' => 'sha256:precomputed',
    ]);

    expect(app(ResolveServiceImageDigest::class)->execute($service))->toBe('sha256:precomputed');
});

it('falls back to the raw output when the digest line is not present', function () {
    app()->instance(RemoteCommandRunner::class, new class implements RemoteCommandRunner
    {
        public function run(Server $server, string $script): string
        {
            return 'postgres:18@sha256:fallbackdigest';
        }
    });

    $service = Service::factory()->for(serviceDigestServer())->create([
        'category' => ServiceCategory::DATABASE,
        'type' => ServiceType::POSTGRES,
        'version' => '18',
        'version_track' => '18',
        'driver_name' => 'postgres.18',
        'credentials' => ['user' => 'u', 'password' => 'p', 'db' => 'd'],
    ]);

    expect(app(ResolveServiceImageDigest::class)->execute($service))->toBe('sha256:fallbackdigest');
});

it('throws when the service has no server to query', function () {
    $service = Service::factory()->create([
        'category' => ServiceCategory::DATABASE,
        'type' => ServiceType::POSTGRES,
        'driver_name' => 'postgres.18',
        'credentials' => ['user' => 'u', 'password' => 'p', 'db' => 'd'],
        'server_id' => null,
    ]);

    expect(fn () => app(ResolveServiceImageDigest::class)->execute($service))
        ->toThrow(RuntimeException::class, 'must have a target server');
});

it('throws when the remote output does not yield a digest', function () {
    app()->instance(RemoteCommandRunner::class, new class implements RemoteCommandRunner
    {
        public function run(Server $server, string $script): string
        {
            return 'no digest at all';
        }
    });

    $service = Service::factory()->for(serviceDigestServer())->create([
        'category' => ServiceCategory::DATABASE,
        'type' => ServiceType::POSTGRES,
        'driver_name' => 'postgres.18',
        'credentials' => ['user' => 'u', 'password' => 'p', 'db' => 'd'],
    ]);

    expect(fn () => app(ResolveServiceImageDigest::class)->execute($service))
        ->toThrow(RuntimeException::class, 'Unable to resolve image digest');
});

function serviceDigestServer(): Server
{
    $organisation = Organisation::factory()->create();
    $provider = Provider::factory()->forOrganisation($organisation)->create();
    $network = Network::create([
        'organisation_id' => $organisation->id,
        'provider_id' => $provider->id,
        'name' => 'test-network',
        'ip_range' => '10.0.0.0/24',
    ]);

    return Server::factory()
        ->forOrganisation($organisation->id)
        ->forProvider($provider->id)
        ->forNetwork($network->id)
        ->create();
}