<?php

namespace Tests\Feature;

use App\Jobs\IngestShellyMessage;
use App\Models\Device;
use App\Models\DeviceState;
use App\Models\Entity;
use App\Services\DeviceCommandService;
use App\Support\Drivers\DeviceDriver;
use App\Support\Drivers\ShellyMqttDriver;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class MqttTest extends TestCase
{
    use RefreshDatabase;

    public function test_ingesting_a_shelly_status_upserts_entity_state(): void
    {
        $device = Device::create([
            'name' => 'Lampe', 'vendor' => 'Shelly', 'protocol' => 'mqtt',
            'config' => ['mqtt_prefix' => 'shelly-lampe'], 'status' => 'active',
            'last_seen_at' => now()->subHour(),
        ]);

        (new IngestShellyMessage('shelly-lampe/status/switch:0', json_encode(['output' => true, 'apower' => 12.7])))->handle();

        $switch = $device->entities()->where('key', 'switch:0')->first();
        $power = $device->entities()->where('key', 'power:0')->first();

        $this->assertTrue(data_get($switch->state->state, 'on'));
        $this->assertSame(13, data_get($power->state->state, 'watts'));
        $this->assertTrue($device->refresh()->last_seen_at->gt(now()->subMinute()));
    }

    public function test_out_of_order_messages_do_not_overwrite_newer_state(): void
    {
        $device = Device::create([
            'name' => 'Lampe', 'vendor' => 'Shelly', 'protocol' => 'mqtt',
            'config' => ['mqtt_prefix' => 'shelly-lampe'], 'status' => 'active',
        ]);

        // Newer message (higher observed_at) says on=true …
        (new IngestShellyMessage('shelly-lampe/status/switch:0', json_encode(['output' => true]), 2_000))->handle();
        // … an older one arriving late must NOT overwrite it.
        (new IngestShellyMessage('shelly-lampe/status/switch:0', json_encode(['output' => false]), 1_000))->handle();

        $switch = $device->entities()->where('key', 'switch:0')->first();
        $this->assertTrue(data_get($switch->state->state, 'on'));
    }

    public function test_unknown_device_auto_onboards_on_a_recognized_component(): void
    {
        (new IngestShellyMessage('shelly1minig3-abc/status/switch:0', json_encode(['output' => true])))->handle();

        $device = Device::where('config->mqtt_prefix', 'shelly1minig3-abc')->first();
        $this->assertNotNull($device);
        $this->assertSame('Shelly', $device->vendor);
        $this->assertSame('mqtt', $device->protocol);
        $this->assertTrue((bool) data_get($device->config, 'auto_onboarded'));
        $this->assertTrue(data_get($device->entities()->where('key', 'switch:0')->first()->state->state, 'on'));
    }

    public function test_housekeeping_topic_does_not_onboard_a_device(): void
    {
        // `sys`/`wifi`/`cloud` status is noise — it must not create a device on its own.
        (new IngestShellyMessage('shelly1minig3-abc/status/sys', json_encode(['restart_required' => false])))->handle();

        $this->assertDatabaseCount('devices', 0);
    }

    public function test_auto_onboard_can_be_disabled(): void
    {
        config()->set('homeos.mqtt.auto_onboard', false);

        (new IngestShellyMessage('shelly1minig3-abc/status/switch:0', json_encode(['output' => true])))->handle();

        $this->assertDatabaseCount('devices', 0);
    }

    public function test_reserved_prefixes_are_never_onboarded(): void
    {
        // A device authed as `shelly` can technically publish homeos/status/# (wildcard) — the
        // ingest must refuse to create a bogus "homeos"/"ring" device from it.
        (new IngestShellyMessage('homeos/status/switch:0', json_encode(['output' => true])))->handle();
        (new IngestShellyMessage('ring/status/switch:0', json_encode(['output' => true])))->handle();

        $this->assertDatabaseCount('devices', 0);
    }

    public function test_onboarding_respects_the_device_cap(): void
    {
        config()->set('homeos.mqtt.max_devices', 1);
        Device::create(['name' => 'existing', 'vendor' => 'Shelly', 'protocol' => 'mqtt', 'config' => ['mqtt_prefix' => 'a']]);

        (new IngestShellyMessage('flood-1/status/switch:0', json_encode(['output' => true])))->handle();

        $this->assertDatabaseCount('devices', 1); // cap reached, no new device
    }

    public function test_input_is_a_plain_input_until_assigned_a_contact_role(): void
    {
        (new IngestShellyMessage('shelly1-x/status/input:0', json_encode(['id' => 0, 'state' => true])))->handle();

        $entity = Device::where('config->mqtt_prefix', 'shelly1-x')->first()->entities()->where('key', 'input:0')->first();
        $this->assertSame('input', $entity->type);
        $this->assertTrue(data_get($entity->state->state, 'on'));
    }

    public function test_input_promoted_to_a_contact_via_device_config(): void
    {
        $device = Device::create([
            'name' => 'Fenster', 'vendor' => 'Shelly', 'protocol' => 'mqtt', 'status' => 'active',
            'config' => ['mqtt_prefix' => 'shelly1-fenster', 'input_roles' => ['0' => ['kind' => 'window', 'invert' => false]]],
        ]);

        (new IngestShellyMessage('shelly1-fenster/status/input:0', json_encode(['id' => 0, 'state' => true])))->handle();

        $entity = $device->entities()->where('key', 'input:0')->first();
        $this->assertSame('contact', $entity->type);
        // Raw `on` is preserved so the device page can re-derive open/closed on invert changes.
        $this->assertSame(['open' => true, 'position' => 'open', 'kind' => 'window', 'on' => true], $entity->state->state);
    }

    public function test_input_contact_role_respects_inversion(): void
    {
        $device = Device::create([
            'name' => 'Fenster', 'vendor' => 'Shelly', 'protocol' => 'mqtt', 'status' => 'active',
            'config' => ['mqtt_prefix' => 'shelly1-inv', 'input_roles' => ['0' => ['kind' => 'door', 'invert' => true]]],
        ]);

        // Inverted: reed closed (state true) means the door is CLOSED.
        (new IngestShellyMessage('shelly1-inv/status/input:0', json_encode(['id' => 0, 'state' => true])))->handle();

        $this->assertFalse(data_get($device->entities()->where('key', 'input:0')->first()->state->state, 'open'));
    }

    public function test_concurrent_onboarding_does_not_duplicate(): void
    {
        (new IngestShellyMessage('shelly-dup/status/switch:0', json_encode(['output' => true])))->handle();
        (new IngestShellyMessage('shelly-dup/status/switch:0', json_encode(['output' => false]), 2_000))->handle();

        $this->assertSame(1, Device::where('config->mqtt_prefix', 'shelly-dup')->count());
    }

    public function test_command_service_audits_every_command(): void
    {
        // Fake driver so the test never touches a real broker.
        $this->app->bind(ShellyMqttDriver::class, fn () => new class implements DeviceDriver
        {
            public function turnOn(Entity $entity): void {}

            public function turnOff(Entity $entity): void {}

            public function setState(Entity $entity, array $state): void {}

            public function setLight(Entity $entity, array $params): void {}

            public function reboot(Device $device): void {}

            public function capabilities(): array
            {
                return [];
            }
        });

        $device = Device::create(['name' => 'Lampe', 'vendor' => 'Shelly', 'protocol' => 'mqtt', 'status' => 'active']);
        $entity = Entity::create(['device_id' => $device->id, 'type' => 'switch', 'key' => 'switch:0']);
        DeviceState::create(['entity_id' => $entity->id, 'state' => ['on' => false]]);

        $command = app(DeviceCommandService::class)->toggle($entity->load('state'));

        $this->assertSame('turn_on', $command->command);
        $this->assertSame('ok', $command->result);
        $this->assertDatabaseHas('commands', ['command' => 'turn_on', 'source' => 'user', 'result' => 'ok']);

        // Optimistic: the state flips immediately so the UI is instant; the device's real status
        // echo reconciles it a moment later (monotonic, newer observed_at wins).
        $this->assertTrue(data_get($entity->refresh()->state->state, 'on'));
    }

    public function test_toggling_a_demo_device_simulates_the_echo(): void
    {
        // Demo devices have no hardware to echo back, so the command service simulates it.
        $this->app->bind(ShellyMqttDriver::class, fn () => new class implements DeviceDriver
        {
            public function turnOn(Entity $entity): void {}

            public function turnOff(Entity $entity): void {}

            public function setState(Entity $entity, array $state): void {}

            public function setLight(Entity $entity, array $params): void {}

            public function reboot(Device $device): void {}

            public function capabilities(): array
            {
                return [];
            }
        });

        \Illuminate\Support\Facades\Event::fake([\App\Events\DeviceStateChanged::class]);

        $device = Device::create(['name' => 'Deckenlicht', 'vendor' => 'Shelly', 'protocol' => 'mqtt', 'status' => 'active', 'demo' => true]);
        $entity = Entity::create(['device_id' => $device->id, 'type' => 'light', 'key' => 'light:0']);
        DeviceState::create(['entity_id' => $entity->id, 'state' => ['on' => false]]);

        app(DeviceCommandService::class)->toggle($entity->load('state', 'device'));

        $this->assertTrue(data_get($entity->refresh()->state->state, 'on'));
        \Illuminate\Support\Facades\Event::assertDispatched(\App\Events\DeviceStateChanged::class);
    }
}