Add REST API and testing suite

README.md

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+# Memersala Flask Application - REST API Enhancement
+
+## Original Author
+Gadiel Zya T. Maramag, BSIT2-B1
+
+## What I Added
+
+### 1. REST API Implementation
+Added a complete REST API layer that provides programmatic access to the application's post management features:
+
+- `GET /api/posts`: List all posts with pagination
+- `GET /api/posts/<filename>`: Get a specific post
+- `POST /api/posts`: Create a new post
+- `PATCH /api/posts/<filename>`: Update post caption
+- `DELETE /api/posts/<filename>`: Delete a post
+
+### 2. API Features
+- Full CRUD operations for posts
+- Authentication and authorization
+- Proper error handling with status codes
+- HATEOAS links for navigation
+- JSON request/response format
+- Swagger documentation at `/api/docs`
+
+### 3. Testing Suite
+Added comprehensive tests using pytest:
+- Test coverage for all CRUD operations
+- Authentication and authorization tests
+- Error handling tests
+- Both positive and negative test cases
+
+### 4. Dependencies Added
+Added new dependencies in requirements.txt:
+- flask-restx: For API and Swagger documentation
+- flask-cors: For CORS support
+- pytest: For testing
+- pytest-cov: For test coverage
+
+## Original Features (Pre-existing)
+- Upload memes/images functionality
+- Basic user authentication
+- Image display
+- Chat functionality
+
+## How to Access the API
+The API documentation is available at `/api/docs` when running the application. All endpoints require authentication via session cookie.