from flask import jsonify

def main(request):
    request_json = request.get_json(silent=True)

    # ✅ Check if body was parsed successfully
    if request_json is None:
        return jsonify({"error": "Invalid or missing JSON in request body."}), 400

    name = request_json.get("name")
    salary = request_json.get("salary")

    # ✅ Validate input fields
    if not name or not isinstance(salary, (int, float)):
        return jsonify({
            "error": "Invalid input. 'name' must be a string and 'salary' must be a number."
        }), 400

    raise_percentage = 15
    expected_raise = salary * (raise_percentage / 100)
    new_salary = salary + expected_raise

    return jsonify({
        "employee_name": name,
        "yearly_salary": round(salary, 2),
        "expected_raise": round(expected_raise, 2),
        "new_salary": round(new_salary, 2)
    })