<?php

namespace App\Support\Drivers;

use App\Models\Device;
use App\Models\Entity;
use App\Support\Shelly\ShellyRpc;

/**
 * Controls Shelly Gen2+ devices over their LOCAL HTTP API (`POST http://<ip>/rpc`) — the same
 * approach Home Assistant uses, no MQTT setup on the device. The device applies the change and
 * we re-poll its status to reflect it. Vendor specifics stay here (H3).
 */
class ShellyHttpDriver implements DeviceDriver
{
    public function __construct(private readonly ShellyRpc $rpc) {}

    public function turnOn(Entity $entity): void
    {
        $this->setComponentOn($entity, true);
    }

    public function turnOff(Entity $entity): void
    {
        $this->setComponentOn($entity, false);
    }

    public function setState(Entity $entity, array $state): void
    {
        if (array_key_exists('on', $state)) {
            $this->setComponentOn($entity, (bool) $state['on']);
        }
    }

    public function setLight(Entity $entity, array $params): void
    {
        [, $id] = array_pad(explode(':', $entity->key, 2), 2, '0');

        $rpc = ['id' => (int) $id];
        if (array_key_exists('on', $params)) {
            $rpc['on'] = (bool) $params['on'];
        }
        if (isset($params['brightness'])) {
            $rpc['brightness'] = max(0, min(100, (int) $params['brightness']));
        }
        if (isset($params['rgb']) && is_array($params['rgb'])) {
            $rpc['rgb'] = array_map(fn ($v) => max(0, min(255, (int) $v)), array_slice($params['rgb'], 0, 3));
        }

        $this->rpc->call($this->ip($entity->device), 'Light.Set', $rpc);
    }

    public function reboot(Device $device): void
    {
        $this->rpc->call($this->ip($device), 'Shelly.Reboot');
    }

    public function capabilities(): array
    {
        return ['switch', 'light'];
    }

    private function setComponentOn(Entity $entity, bool $on): void
    {
        [$component, $id] = array_pad(explode(':', $entity->key, 2), 2, '0');

        $this->rpc->call($this->ip($entity->device), ucfirst($component).'.Set', ['id' => (int) $id, 'on' => $on]);
    }

    private function ip(Device $device): string
    {
        $ip = data_get($device->config, 'ip');

        if (blank($ip)) {
            throw new \RuntimeException("Device {$device->id} has no local IP configured.");
        }

        return $ip;
    }
}