<?php

declare(strict_types=1);

namespace Lvl0\FediDiscover\Tests\Feature;

use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Event;
use Lvl0\FediDiscover\Actions\PollFediverseAction;
use Lvl0\FediDiscover\Clients\FediverseClientFactory;
use Lvl0\FediDiscover\Clients\FediverseClientInterface;
use Lvl0\FediDiscover\Config\InstanceType;
use Lvl0\FediDiscover\Events\PollFailed;
use Lvl0\FediDiscover\Models\Instance;
use Mockery;
use RuntimeException;
use Tests\TestCase;

class PollInstancesCommandTest extends TestCase
{
    use RefreshDatabase;

    protected function setUp(): void
    {
        parent::setUp();

        // Bind a no-op factory stub so the command can resolve PollFediverseAction
        // from the container without making real HTTP calls.
        $clientStub = Mockery::mock(FediverseClientInterface::class);
        $clientStub->shouldReceive('fetchPostsSince')->andReturn(collect());

        $factoryStub = Mockery::mock(FediverseClientFactory::class);
        $factoryStub->shouldReceive('for')->andReturn($clientStub);

        $this->app->instance(FediverseClientFactory::class, $factoryStub);
    }

    public function test_it_exits_zero_when_there_are_no_enabled_instances(): void
    {
        $this->artisan('fedi-discover:poll')
            ->assertExitCode(0);
    }

    public function test_it_calls_the_action_for_each_enabled_instance_and_skips_disabled(): void
    {
        $enabled1 = Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://mastodon.social',
            'enabled' => true,
            'interval_seconds' => 600,
        ]);

        $enabled2 = Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://fosstodon.org',
            'enabled' => true,
            'interval_seconds' => 600,
        ]);

        Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://disabled.example',
            'enabled' => false,
            'interval_seconds' => 600,
        ]);

        $calledWith = [];

        $action = Mockery::mock(PollFediverseAction::class);
        $action->shouldReceive('execute')
            ->twice()
            ->withArgs(function (Instance $instance) use (&$calledWith): bool {
                $calledWith[] = $instance->url;

                return true;
            });

        $this->app->instance(PollFediverseAction::class, $action);

        $this->artisan('fedi-discover:poll')->assertExitCode(0);

        $this->assertEqualsCanonicalizing(
            [$enabled1->url, $enabled2->url],
            $calledWith,
        );
    }

    public function test_one_instance_throwing_does_not_stop_remaining_instances_from_being_polled(): void
    {
        Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://failing.example',
            'enabled' => true,
            'interval_seconds' => 600,
        ]);

        $healthy = Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://healthy.example',
            'enabled' => true,
            'interval_seconds' => 600,
        ]);

        $calledWith = [];

        $action = Mockery::mock(PollFediverseAction::class);
        $action->shouldReceive('execute')
            ->twice()
            ->andReturnUsing(function (Instance $instance) use (&$calledWith): void {
                $calledWith[] = $instance->url;

                if ($instance->url === 'https://failing.example') {
                    throw new RuntimeException('Connection refused');
                }
            });

        $this->app->instance(PollFediverseAction::class, $action);

        $this->artisan('fedi-discover:poll')->assertExitCode(1);

        $this->assertEqualsCanonicalizing(
            ['https://failing.example', $healthy->url],
            $calledWith,
        );
    }

    public function test_poll_failed_event_is_dispatched_when_action_throws(): void
    {
        Event::fake([PollFailed::class]);

        $instance = Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://failing.example',
            'enabled' => true,
            'interval_seconds' => 600,
        ]);

        $action = Mockery::mock(PollFediverseAction::class);
        $action->shouldReceive('execute')
            ->once()
            ->andReturnUsing(function (): void {
                throw new RuntimeException('Connection refused');
            });

        $this->app->instance(PollFediverseAction::class, $action);

        $this->artisan('fedi-discover:poll');

        Event::assertDispatched(PollFailed::class, function (PollFailed $event) use ($instance): bool {
            return $event->instance->id === $instance->id
                && $event->message === 'Connection refused';
        });
    }

    public function test_poll_failed_event_is_not_dispatched_on_a_successful_poll(): void
    {
        Event::fake([PollFailed::class]);

        Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://healthy.example',
            'enabled' => true,
            'interval_seconds' => 600,
        ]);

        // setUp() already binds a no-op action stub via the factory; no override needed.

        $this->artisan('fedi-discover:poll');

        Event::assertNotDispatched(PollFailed::class);
    }

    public function test_it_exits_one_when_at_least_one_instance_fails(): void
    {
        Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://failing.example',
            'enabled' => true,
            'interval_seconds' => 600,
        ]);

        Instance::create([
            'type' => InstanceType::Mastodon,
            'url' => 'https://healthy.example',
            'enabled' => true,
            'interval_seconds' => 600,
        ]);

        $action = Mockery::mock(PollFediverseAction::class);
        $action->shouldReceive('execute')
            ->twice()
            ->andReturnUsing(function (Instance $instance): void {
                if ($instance->url === 'https://failing.example') {
                    throw new RuntimeException('Connection refused');
                }
            });

        $this->app->instance(PollFediverseAction::class, $action);

        $this->artisan('fedi-discover:poll')->assertExitCode(1);
    }
}