README

A lightweight, framework-agnostic PHP SDK to build Zalo chatbots with safety, testability, and developer ergonomics.

Features

• Handle Zalo messages and events
• Type-safe DTOs: Message, Webhook, InfoMe, MessageResponse
• SOLID architecture with interfaces and DI
• Works in plain PHP or Laravel
• Rich exceptions for robust error handling

Why Use This Library?

• Framework-independent: works anywhere
• Type-safe: DTOs ensure validated data
• Testable: dependency-injected collaborators and factories
• Extensible: swap implementations via interfaces
• Production-ready: explicit errors and safe parsing

Requirements

• PHP 8.1 or higher
• Composer
• Optional: Laravel 9+ for Laravel integration

Installation

Install via Composer:

composer require hoangkhacphuc/zalo_bot

Quick Start (Plain PHP)

<?php
require_once 'vendor/autoload.php';

use Hoangkhacphuc\ZaloBot\Support\ZaloBotFactory;

$bot = ZaloBotFactory::create('<zalo-bot-access-token>');
$me = $bot->getMe();
echo $me->name;

Handle Webhooks

<?php
require_once 'vendor/autoload.php';

use Hoangkhacphuc\ZaloBot\BotConfig;
use Hoangkhacphuc\ZaloBot\Contracts\Repository;
use Hoangkhacphuc\ZaloBot\DTO\Message;
use Hoangkhacphuc\ZaloBot\Handler\TextMessage;
use Hoangkhacphuc\ZaloBot\Service\WebhookServiceFactory;
use Hoangkhacphuc\ZaloBot\Service\MessageDispatcher;

$payloads = json_decode(file_get_contents('php://input'), true);
$headers = getallheaders();

class MessageRepository implements Repository
{
    public function save(Message $message): void
    {
        // Save message to database or log
    }
}

class TextMessageHandler extends TextMessage
{
    public function handle(Message $message): void
    {
        file_put_contents('php://stderr', 'Text: '.$message->content.PHP_EOL);
    }
}

$botConfig = new BotConfig(
    '<zalo-access-token>',
    '<webhook-url>',
    '<webhook-secret>'
);

$dispatcher = new MessageDispatcher;
$dispatcher->registerHandler(new TextMessageHandler);

$webhookService = WebhookServiceFactory::create(
    $botConfig,
    new MessageRepository,
    dispatcher: $dispatcher,
);

// Handle
$webhookService->handle($payloads, $headers);

Laravel Integration

1. Publish config:

php artisan vendor:publish --tag=zalobot-config

1. Set environment variables in .env:

ZALO_ACCESS_TOKEN=your-token
ZALO_WEBHOOK_URL=https://example.com/webhook
ZALO_WEBHOOK_SECRET=your-secret

1. Use WebhookService via container:

use Hoangkhacphuc\ZaloBot\Service\WebhookService;

Route::post('/zalo/webhook', function (Request $request, WebhookService $service) {
    $service->handle($request->all(), $request->headers->all());
    return response()->json(['ok' => true]);
});

Testing

• Pest tests included (tests/).
• Run: composer test

Configuration & Environment

• Use BotConfig($accessToken, $webhookUrl, $webhookSecret).
• For Laravel, manage via config/zalobot.php and .env.

Error Handling

The SDK throws domain-specific exceptions like HttpException, UnauthorizedException, SendMessageException.

Migration

This is the first stable release (v1.0.0). No migration needed.

License

MIT License. See the LICENSE file for details.