Add tech_docs/quality_code.md

tech_docs/quality_code.md

@@ -0,0 +1,249 @@
+Certainly! Here are the refined strategies for addressing the issues of large PRs and code quality without mentioning Copilot.
+
+### 1. **Code Review and PR Best Practices**
+
+#### Break Down PRs into Smaller Chunks
+- **Principle**: Small, focused PRs are easier to review and understand.
+- **Implementation**: Encourage developers to submit smaller, incremental changes rather than large, monolithic PRs.
+
+#### Python Example
+
+```python
+# Example of small, focused PR
+def add_user(database, user):
+    database.add(user)
+
+def update_user(database, user):
+    database.update(user)
+```
+
+#### JavaScript Example
+
+```javascript
+// Example of small, focused PR
+function addUser(database, user) {
+    database.add(user);
+}
+
+function updateUser(database, user) {
+    database.update(user);
+}
+```
+
+### 2. **Linting and Code Formatting**
+
+#### Enforce Code Quality with Tools
+- **Principle**: Use tools like ESLint to enforce code quality and style guidelines.
+- **Implementation**: Set up pre-commit hooks and continuous integration (CI) pipelines to run linting and formatting checks automatically.
+
+#### ESLint Configuration Example
+
+```json
+{
+    "extends": "eslint:recommended",
+    "rules": {
+        "indent": ["error", 4],
+        "linebreak-style": ["error", "unix"],
+        "quotes": ["error", "single"],
+        "semi": ["error", "always"]
+    }
+}
+```
+
+### 3. **Effective Use of Composition and Modular Design**
+
+#### Apply Composition Over Inheritance
+- **Principle**: Design code to be modular and composable, reducing complexity and enhancing readability.
+- **Implementation**: Use composition patterns and dependency injection to create modular, testable code.
+
+#### Python Example
+
+```python
+class Logger:
+    def log(self, message):
+        print(message)
+
+class UserService:
+    def __init__(self, logger):
+        self.logger = logger
+
+    def add_user(self, user):
+        # Adding user logic
+        self.logger.log(f"User {user} added")
+
+if __name__ == "__main__":
+    logger = Logger()
+    user_service = UserService(logger)
+    user_service.add_user("John Doe")
+```
+
+#### JavaScript Example
+
+```javascript
+class Logger {
+    log(message) {
+        console.log(message);
+    }
+}
+
+class UserService {
+    constructor(logger) {
+        this.logger = logger;
+    }
+
+    addUser(user) {
+        // Adding user logic
+        this.logger.log(`User ${user} added`);
+    }
+}
+
+const logger = new Logger();
+const userService = new UserService(logger);
+userService.addUser('John Doe');
+```
+
+### 4. **Functional Programming Techniques**
+
+#### Using Functional Programming Techniques to Simplify Code
+- **Principle**: Use functional programming techniques to compose behavior without relying on inheritance.
+- **Implementation**: Utilize higher-order functions, function composition, and other functional paradigms.
+
+#### Python Example
+
+```python
+def add(a, b):
+    return a + b
+
+def multiply(a, b):
+    return a * b
+
+def compose(f, g):
+    return lambda *args: f(g(*args))
+
+add_then_multiply = compose(lambda x: multiply(x, 3), add)
+
+print(add_then_multiply(1, 2))  # Output: 9
+```
+
+#### JavaScript Example
+
+```javascript
+const add = (a, b) => a + b;
+const multiply = (a, b) => a * b;
+
+const compose = (f, g) => (...args) => f(g(...args));
+
+const addThenMultiply = compose((x) => multiply(x, 3), add);
+
+console.log(addThenMultiply(1, 2)); // Output: 9
+```
+
+### 5. **Service-Oriented Architecture (SOA)**
+
+#### Apply Service-Oriented Architecture
+- **Principle**: Design your system as a collection of services that communicate over well-defined interfaces or APIs.
+- **Implementation**: Break your application into smaller, loosely coupled services.
+
+#### Python Example
+
+```python
+class PaymentService:
+    def process_payment(self, amount):
+        print(f"Processing payment of {amount}")
+
+class OrderService:
+    def __init__(self, payment_service):
+        self.payment_service = payment_service
+
+    def create_order(self, order_id, amount):
+        print(f"Creating order {order_id}")
+        self.payment_service.process_payment(amount)
+
+if __name__ == "__main__":
+    payment_service = PaymentService()
+    order_service = OrderService(payment_service)
+    order_service.create_order("123", 100.0)
+```
+
+#### JavaScript Example
+
+```javascript
+class PaymentService {
+    processPayment(amount) {
+        console.log(`Processing payment of ${amount}`);
+    }
+}
+
+class OrderService {
+    constructor(paymentService) {
+        this.paymentService = paymentService;
+    }
+
+    createOrder(orderId, amount) {
+        console.log(`Creating order ${orderId}`);
+        this.paymentService.processPayment(amount);
+    }
+}
+
+const paymentService = new PaymentService();
+const orderService = new OrderService(paymentService);
+orderService.createOrder("123", 100.0);
+```
+
+### 6. **Event-Driven Architecture**
+
+#### Apply Event-Driven Architecture
+- **Principle**: Use events to decouple components. This allows different parts of your system to communicate without being tightly coupled.
+- **Implementation**: Utilize event emitters, message brokers, or other event-driven mechanisms.
+
+#### Python Example
+
+```python
+import events
+
+class EventEmitter(events.Events):
+    pass
+
+event_emitter = EventEmitter()
+
+def order_created_listener(order_id, amount):
+    print(f"Order {order_id} created with amount {amount}")
+    # Process payment here
+
+event_emitter.on('order_created', order_created_listener)
+
+def create_order(order_id, amount):
+    print(f"Creating order {order_id}")
+    event_emitter.emit('order_created', order_id, amount)
+
+if __name__ == "__main__":
+    create_order("123", 100.0)
+```
+
+#### JavaScript Example
+
+```javascript
+const EventEmitter = require('events');
+const eventEmitter = new EventEmitter();
+
+eventEmitter.on('orderCreated', (orderId, amount) => {
+    console.log(`Order ${orderId} created with amount ${amount}`);
+    // Process payment here
+});
+
+const createOrder = (orderId, amount) => {
+    console.log(`Creating order ${orderId}`);
+    eventEmitter.emit('orderCreated', orderId, amount);
+};
+
+createOrder('123', 100.0);
+```
+
+### 7. **Code Review Culture**
+
+#### Encourage Collaboration and Communication
+- **Principle**: Foster a collaborative code review culture where reviewers and authors engage in constructive dialogue.
+- **Implementation**: Set up regular code review sessions and encourage developers to ask questions and provide feedback.
+
+### Conclusion
+By adopting these strategies, you can improve code quality, make PRs more manageable, and ensure that your team follows best practices for code reviews and development. Training developers on effective use of these principles and fostering a collaborative code review culture will further enhance the development process.