From 0b4c32c8849ebe28157c22c0e294a8007af78aed Mon Sep 17 00:00:00 2001
From: prusnibandela <prusnibandela99@gmail.com>
Date: Sun, 17 Mar 2024 22:22:24 +0100
Subject: [PATCH] Task 1 commit

---
 circle.py                        | 36 ++++++++++++++++++++++++++++++++
 flask_app.py                     | 31 +++++++++++++++++++++++++++
 templates/circle_calculator.html | 24 +++++++++++++++++++++
 templates/layout.html            |  1 +
 test_circle.py                   | 21 +++++++++++++++++++
 5 files changed, 113 insertions(+)
 create mode 100644 circle.py
 create mode 100644 templates/circle_calculator.html
 create mode 100644 test_circle.py

diff --git a/circle.py b/circle.py
new file mode 100644
index 0000000..12e5996
--- /dev/null
+++ b/circle.py
@@ -0,0 +1,36 @@
+class Circle:
+    """
+    A class to represent a circle and perform calculations to it.
+    Attributes:
+        radius(float): The radius of the circle
+    """
+
+    def __init__(self, radius: float):
+        """
+        Constructs the necessary attributes for the circle class.
+        Parameters:
+            radius(float): The radius of the circle.
+        """
+        if radius < 0:
+            raise ValueError("positive radius expected")
+        self.radius = radius
+
+    def area(self) -> float:
+        """
+        Calculates the area of the circle.
+        Returns:
+            float: The area of the circle.
+        """
+        assert self.radius >= 0, "positive radius expected"
+        pi = 3.14159265359
+        return round(pi * (self.radius ** 2), 2)
+
+    def perimeter(self) -> float:
+        """
+        Calculates the perimeter of the circle.
+        Returns:
+            float: The perimeter of the circle.
+        """
+        assert self.radius >= 0, "positive radius expected"
+        pi = 3.14159265359
+        return round(2 * pi * self.radius, 2)
\ No newline at end of file
diff --git a/flask_app.py b/flask_app.py
index 8897fa2..cb4fa0f 100644
--- a/flask_app.py
+++ b/flask_app.py
@@ -2,6 +2,8 @@
 
 from helper import perform_calculation, convert_to_float
 
+from circle import Circle
+
 app = Flask(__name__)  # create the instance of the flask class
 
 
@@ -38,3 +40,32 @@ def calculate():
             return render_template('calculator.html', printed_result="You cannot divide by zero")
 
     return render_template('calculator.html')
+
+
+@app.route('/circle', methods=['GET', 'POST'])
+def circle_calculations():
+    if request.method == 'POST':
+        radius = request.form['radius']
+        calculation = request.form['calculation']
+
+        if calculation not in ['area', 'perimeter']:
+            return render_template('circle_calculator.html', result="Calculation must be either 'area' or 'perimeter'.")
+
+        try:
+            radius = float(radius)
+        except ValueError:
+            return render_template('circle_calculator.html', result="Radius must be a valid number.")
+
+        circle = Circle(radius)
+
+        if calculation == 'area':
+            result = circle.area()
+        else:
+            result = circle.perimeter()
+
+        return render_template('circle_calculator.html', result=f"The {calculation} of the circle with radius {radius} is {result}.")
+    return render_template('circle_calculator.html')
+
+
+if __name__ == '__main__':
+    app.run(debug=True)
\ No newline at end of file
diff --git a/templates/circle_calculator.html b/templates/circle_calculator.html
new file mode 100644
index 0000000..d776993
--- /dev/null
+++ b/templates/circle_calculator.html
@@ -0,0 +1,24 @@
+{% extends 'layout.html' %}
+{% block content %}
+    <h1>Circle Calculator</h1>
+    <form method="POST">
+        <label>
+            <input type="text" name="radius" placeholder="Enter the radius" required="required">
+        </label>
+        <label for="calculation">Calculation:</label>
+        <select id="calculation" name="calculation">
+            <option value="area">Area</option>
+            <option value="perimeter">Perimeter</option>
+        </select>
+
+        <button type="submit">Calculate</button>
+    </form>
+
+    <br>
+
+    {% if result %}
+        <p>Result: {{ result }}</p>
+    {% else %}
+        <p>Please enter a radius and select a calculation to see the result.</p>
+    {% endif %}
+{% endblock %}
\ No newline at end of file
diff --git a/templates/layout.html b/templates/layout.html
index 8de2e62..43e21c5 100644
--- a/templates/layout.html
+++ b/templates/layout.html
@@ -12,6 +12,7 @@ <h1 class="logo"><a href="{{ url_for('home') }}">Home</a></h1>
         <strong><nav>
           <ul class="menu">
             <li><a href="{{ url_for('calculate') }}">General Calculator</a></li>
+              <li><a href="{{ url_for('circle_calculations') }}">Circle Calculator</a></li>
           </ul>
         </nav></strong>
       </div>
diff --git a/test_circle.py b/test_circle.py
new file mode 100644
index 0000000..af3b258
--- /dev/null
+++ b/test_circle.py
@@ -0,0 +1,21 @@
+from circle import Circle
+
+
+def test_area():
+    radius = 5
+    manual_area = round(3.14159265359 * (radius ** 2), 2)
+    circle = Circle(radius)
+    assert round(circle.area(), 2) == manual_area, "Area test failed"
+
+
+def test_perimeter():
+    radius = 5
+    manual_perimeter = round(2 * 3.14159265359 * radius, 2)
+    circle = Circle(radius)
+    assert round(circle.perimeter(), 2) == manual_perimeter, "Perimeter test failed"
+
+
+if __name__ == "__main__":
+    test_area()
+    test_perimeter()
+    print("All tests successfully passed.")
\ No newline at end of file