pages/cohesion.py

import streamlit as st
from utils.code_examples import cohesion_examples
from utils.quiz import cohesion_quiz

st.title("Cohesion in Software Architecture")

st.write("""
Cohesion refers to the degree to which the elements within a module belong together.
High cohesion is generally associated with good software design.
""")

st.subheader("Types of Cohesion")
st.write("""
1. **Functional Cohesion**: All elements of the module are related to the performance of a single function.
2. **Sequential Cohesion**: Elements of a module are involved in activities where output from one element serves as input to another.
3. **Communicational Cohesion**: Elements of a module operate on the same data.
4. **Procedural Cohesion**: Elements of a module are involved in different and possibly unrelated actions that must be performed in a specific order.
5. **Temporal Cohesion**: Elements are related by the fact that they are processed at a particular time in program execution.
6. **Logical Cohesion**: Elements perform similar operations, but these operations are unrelated.
7. **Coincidental Cohesion**: Elements have no meaningful relationship to one another.
""")

st.subheader("Examples of Cohesion")

for i, (title, description, python_code) in enumerate(cohesion_examples, 1):
    st.markdown(f"### Example {i}: {title}")
    st.write(description)
    
    # Create tabs for Python and Java examples
    python_tab, java_tab = st.tabs(["Python", "Java"])
    
    with python_tab:
        st.code(python_code, language="python")
    
    with java_tab:
        if title == "Functional Cohesion":
            java_code = """
class UserAuthentication {
    private String username;
    private String password;

    public UserAuthentication(String username, String password) {
        this.username = username;
        this.password = password;
    }

    public String hashPassword() {
        // Hash the password
        return "hashed_" + password;
    }

    public boolean checkPasswordStrength() {
        // Check if the password meets security requirements
        return password.length() >= 8;
    }

    public boolean authenticate() {
        // Authenticate the user
        return username != null && password != null;
    }
}
"""
        elif title == "Sequential Cohesion":
            java_code = """
class OrderProcessor {
    public Order processOrder(Order order) {
        Order validatedOrder = validateOrder(order);
        Order calculatedOrder = calculateTotal(validatedOrder);
        return submitOrder(calculatedOrder);
    }

    private Order validateOrder(Order order) {
        // Validate the order
        order.setValid(true);
        return order;
    }

    private Order calculateTotal(Order order) {
        // Calculate the total price
        order.setTotal(100.0); // Dummy calculation
        return order;
    }

    private Order submitOrder(Order order) {
        // Submit the order to the system
        order.setSubmitted(true);
        return order;
    }
}
"""
        elif title == "Communicational Cohesion":
            java_code = """
class UserManager {
    private User userData;

    public UserManager(User userData) {
        this.userData = userData;
    }

    public boolean validateUser() {
        // Validate user data
        return userData.getName() != null && userData.getEmail() != null;
    }

    public void saveUser() {
        // Save user to database
        System.out.println("User saved: " + userData.getName());
    }

    public void sendWelcomeEmail() {
        // Send welcome email to user
        System.out.println("Welcome email sent to: " + userData.getEmail());
    }
}
"""
        st.code(java_code, language="java")

st.subheader("Interactive Exercise: Identify Cohesion Types")
st.write("Analyze the following code snippets and identify the type of cohesion present.")

code1 = """
class UserManager:
    def create_user(self, username, email):
        # logic to create user
        pass

    def delete_user(self, user_id):
        # logic to delete user
        pass

    def update_user(self, user_id, new_data):
        # logic to update user
        pass
"""

code2 = """
class ReportGenerator:
    def generate_sales_report(self):
        # logic for sales report
        pass

    def generate_inventory_report(self):
        # logic for inventory report
        pass

    def send_email(self, report):
        # logic to send email
        pass
"""

st.code(code1, language="python")
user_answer1 = st.selectbox("What type of cohesion is present in the first example?", 
                            ("Functional", "Sequential", "Communicational", "Procedural", "Temporal", "Logical", "Coincidental"))

st.code(code2, language="python")
user_answer2 = st.selectbox("What type of cohesion is present in the second example?", 
                            ("Functional", "Sequential", "Communicational", "Procedural", "Temporal", "Logical", "Coincidental"))

if st.button("Check Answers"):
    if user_answer1 == "Functional" and user_answer2 == "Logical":
        st.success("Correct! The UserManager class shows functional cohesion, while the ReportGenerator class shows logical cohesion.")
    else:
        st.error("Not quite. Try again!")

st.markdown("---")

st.subheader("Quiz: Cohesion Concepts")
cohesion_quiz()