<?php

namespace App\Services\MegaMind;

use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
use RuntimeException;

/**
 * MegaMind M2M API client.
 *
 * Sends server-originated domain events to MegaMind. MegaMind is responsible
 * for the actual user-to-lighthouse linking; this server only reports which
 * user was created and which company (lighthouse) the user belongs to.
 */
class MegaMindClient
{
    /**
     * Whether the MegaMind API is enabled and has the credentials it needs.
     *
     * @return bool
     */
    public function isConfigured(): bool
    {
        return (bool) config('megamind.enabled', true)
            && !empty(config('megamind.base_url'))
            && !empty(config('megamind.token'));
    }

    /**
     * Notify MegaMind that a user was created for a given lighthouse.
     *
     * @param int    $userId
     * @param string $lighthouse  Lighthouse URL from the company's settings.
     * @param int    $port        Lighthouse port from the company's settings.
     * @return bool
     *
     * @throws RuntimeException when MegaMind responds with a non-successful status.
     */
    public function notifyUserCreated(int $userId, string $lighthouse, int $port): bool
    {
        if (!$this->isConfigured()) {
            Log::debug('MegaMind: user notification skipped, API is not configured.', [
                'user_id' => $userId,
            ]);

            return false;
        }

        $url = rtrim(config('megamind.base_url'), '/')
            . '/' . ltrim(config('megamind.user_path', '/api/m2m/users'), '/');

        $response = Http::timeout((int) config('megamind.timeout', 15))
            ->acceptJson()
            ->asJson()
            ->withToken(config('megamind.token'))
            ->post($url, [
                'user_id'    => $userId,
                'lighthouse' => $lighthouse,
                'port'       => $port,
            ]);

        if (!$response->successful()) {
            throw new RuntimeException(sprintf(
                'MegaMind user notification failed (%d): %s',
                $response->status(),
                $response->body()
            ));
        }

        Log::info('MegaMind: user notification sent.', [
            'user_id'    => $userId,
            'lighthouse' => $lighthouse,
            'port'       => $port,
            'status'     => $response->status(),
        ]);

        return true;
    }
}