PythonFile

from flask import Flask, request, jsonify
import json

app = Flask(__name__)

global data

# Read data from file and store in global variable data
with open('data.json') as f:
    data = json.load(f)


@app.route('/')
def hello_world():
    return 'Hello, World!'  # return 'Hello World' in response


@app.route('/students')
def get_students():
    result = []
    pref = request.args.get('pref')  # get the parameter from url
    if pref:
        for student in data:  # iterate dataset
            if student[
                    'pref'] == pref:  # select only the students with a given meal preference
                result.append(student)  # add matching student to the result
        return jsonify(result)  # return filtered set if parameter is supplied
    return jsonify(data)  # return entire dataset if no parameter supplied


@app.route('/students/<id>')
def get_student(id):
    for student in data:
        if student[
                'id'] == id:  # filter out the students without the specified id
            return jsonify(student)


@app.route('/stats', methods=['GET'])
def get_stats():
    # Total preferences
    pref_count = {"Vegetable": 0, "Chicken": 0, "Fish": 0}

    # Counters sorted by program selections
    programme_pref_count = {
        "Chicken": {
            "Computer Science (Special)": 0,
            "Computer Science (Major)": 0,
            "Information Technology (Special)": 0,
            "Information Technology (Major)": 0
        },
        "Vegetable": {
            "Computer Science (Special)": 0,
            "Computer Science (Major)": 0,
            "Information Technology (Special)": 0,
            "Information Technology (Major)": 0
        },
        "Fish": {
            "Computer Science (Special)": 0,
            "Computer Science (Major)": 0,
            "Information Technology (Special)": 0,
            "Information Technology (Major)": 0
        }
    }

    # Loop to count preferences and program selections
    for record in data:
        pref = record["pref"]  # Get the preference (Chicken, Vegetable, Fish)
        programme = record["programme"]  # Get the selected program

        # Count total preferences
        if pref in pref_count:
            pref_count[pref] += 1

        # Count program selections based on each preference
        if pref in programme_pref_count:
            if programme in programme_pref_count[pref]:
                programme_pref_count[pref][programme] += 1

    # Return the counts for preferences and programs as JSON
    return jsonify({
        "preferences": pref_count,  # Total for each meal preference
        "programmes_by_preference":
        programme_pref_count  # Breakdown of programmes by preference
    })


@app.route('/add/<int:a>/<int:b>', methods=['GET'])
def add(a, b):
    result = a + b
    return jsonify({"a": a, "b": b, "result": result})  #result was used over =


@app.route('/subtract/<int:a>/<int:b>', methods=['GET'])
def subtract(a, b):
    result = a - b
    return jsonify({"a": a, "b": b, "result": result})


@app.route('/multiply/<int:a>/<int:b>', methods=['GET'])
def multiply(a, b):
    result = a * b
    return jsonify({"a": a, "b": b, "result": result})


@app.route('/divide/<int:a>/<int:b>', methods=['GET'])
def divide(a, b):
    if b == 0:
        return jsonify(
            {"ERROR": "Division by zero is not mathematically possible"})
    result = a / b
    return jsonify({"a": a, "b": b, "result": result})


# Run the app
app.run(host='0.0.0.0', port=8080)