<?php

declare(strict_types=1);

namespace App\Services\Notifications;

use App\Models\NotificationSetting;
use Illuminate\Support\Facades\Http;

/**
 * WAHA (WhatsApp HTTP API) — self-hosted WhatsApp bridge.
 * Docs: https://waha.devlike.pro/docs/how-to/send-messages/
 */
class WahaNotifier
{
    public function sendBatch(NotificationSetting $setting, array $messages): void
    {
        foreach ($messages as $message) {
            $this->send($setting, $message);
        }
    }

    public function sendTest(NotificationSetting $setting): void
    {
        $this->send(
            $setting,
            "🐱 *Cathy's App — Test Notification*\n\nYour WhatsApp channel is configured correctly! 🎉"
        );
    }

    private function send(NotificationSetting $setting, string $text): void
    {
        $config   = $setting->config ?? [];
        $endpoint = $config['waha_endpoint'] ?? null;
        $session  = $config['waha_session'] ?? 'default';
        $chatId   = $config['chat_id'] ?? null;
        $apiKey   = $config['api_key'] ?? null;

        if (! $endpoint || ! $chatId) {
            throw new \RuntimeException('WAHA waha_endpoint and chat_id are required.');
        }

        $http = Http::timeout(15)->acceptJson()->contentType('application/json');

        if ($apiKey) {
            $http = $http->withHeaders(['X-Api-Key' => $apiKey]);
        }

        $response = $http->post($endpoint, [
            'chatId'  => $chatId,
            'text'    => $text,
            'session' => $session,
        ]);

        if (! $response->successful()) {
            $keyHint = $apiKey ? '(api_key set, length=' . strlen($apiKey) . ')' : '(no api_key)';
            throw new \RuntimeException(
                "WAHA API error {$response->status()} {$keyHint} → " . $response->body()
            );
        }
    }
}