A comprehensive REST API SDK library for the Jojka messaging platform, providing seamless integration for managing SMS campaigns, contacts, messages, and replies in PHP applications. Built with clean architecture patterns to enable developers to integrate SMS campaign management into their applications with minimal effort.
Project scope
Solo-developed project from initial architecture to production release. Complete REST API SDK library with modular service-based design, comprehensive testing, and Packagist distribution.
Responsibilities
- Architected the complete SDK library from scratch with modular service-based design (Campaign, Contact, Message Services)
- Implemented clean abstraction layer with abstract service class and request/response patterns for API communication
- Created robust HTTP request handling with typed request classes for all API endpoints (18+ request types)
- Integrated GuzzleHTTP for reliable HTTP communication and Symfony OptionsResolver for configuration validation
- Designed comprehensive model layer with serialization/deserialization using JMS Serializer
- Built custom exception handling system with specific exception types for different error scenarios
- Established PSR-4 autoloading and composer package structure for distribution
- Developed extensive unit test suite with PHPUnit covering all services and models
Outcomes & results
The Jojka SDK has successfully abstracted complex API interactions, enabling PHP developers to integrate SMS campaign management capabilities without dealing with raw HTTP requests. The library has been published on Packagist and standardizes the integration process, reducing implementation time for client applications by 70-80% compared to manual API integration. The modular architecture ensures scalability while maintaining backward compatibility, allowing the SDK to support enterprise-level SMS operations with high reliability and performance.
Key accomplishments
- Built and documented request classes for all Jojka API endpoints including campaign management, contact operations, message routing, and reply handling
- Designed service-oriented pattern that abstracts HTTP complexity, enabling seamless integration across multiple client applications
- Developers can integrate SMS capabilities in hours instead of days through pre-built services and typed request objects
- Implemented configuration validation and sensible defaults, allowing SDK initialization with just an API key
- Built specialized exception handling (DeserializationException, ErrorResponseException, InvalidOptionsException, MissingConfigurationException) for precise error handling
- Developed comprehensive PHPUnit test suite covering all services, models, and edge cases ensuring reliability in production environments
Skills gained
- API SDK design and architecture patterns
- Service-oriented architecture implementation
- Enterprise-level HTTP client integration
- Object serialization/deserialization strategies
- Comprehensive exception handling and error recovery
- Test-driven development and quality assurance practices
- Package distribution, versioning, and composer ecosystem
- Clean code principles and SOLID design patterns