#!/usr/bin/env python
"""
Georgia Institute of Technology - CS1301
Introduction to Object Oriented Programming using Python.
"""
__author__ = "YOUR NAME HERE"
""" COLLABORATION STATEMENT HERE """

class Student(object):
    """ docstring of a Student object.
    Student have the following properties:
    Attributes:
        name: A string representing the student's name.
        gtid: A string representing  the student's GT id.
        year: An integer representing the student's class (default: 1)
            1 -> Freshman
            2 -> Sophomore
            3 -> Junior
            4 -> Senior
        courses: A dictionary representing the courses a student is enrolled.
            Key -> A string representing a Course code
            Value -> [A Course object, grade (an integer 0-4)]
    """

    def __init__(self, name, gtid, year = 1):
        """Initialize a Student object whose name is *name*, gtid is *gtid*, gpa is *gpa*, class standing is *year*; courses start empty"""

        #TODO write your own implementation here
        pass

    def calculate_gpa(self):
        """ Returns a float of the student's gpa. To calculate GPA:
        1. If student has no courses his gpa must be 0.0
        2. Multiply the grade (0-4) by the number of credit to get quality poins.
        3. Total the credit hours. Total the total quality points.
        4. Divide the total quality points by the total credit hours"""

        #TODO write your own implementation here
        pass

    def set_year(self, year):
        """ change student's year. year is now *year* """

        #TODO write your own implementation here
        pass

    def in_dean_list(self):
        """ return true if gpa greater than or equal 3, false otherwise """

        #TODO write your own implementation here
        pass

    def get_real_year(self):
        """ return a string representation of the student's class standing
        1 -> Freshman, 2 -> Sophomore, 3 -> Junior, 4 -> Senior """

        #TODO write your own implementation here
        pass

    def get_total_credits(self):
        """ return the amount of credits a student is taking as an int"""

        #TODO write your own implementation here
        pass

    def register(self, course):
        """ Add a course to the student's courses. No duplicate courses are allowed. If student is registered for X course with X professor, it should not be allowed to registered for X course with Y professor. The initial grade for the course should be 0."""

        #TODO write your own implementation here
        pass

    def register_many(self, courses):
        """ register courses from a list of Course objects """

        #TODO write your own implementation here
        pass

    def drop(self, course):
        """ Drop a course if student is registered to it. Return True if successfully dropped and False if student is not registered for that course. """

        #TODO write your own implementation here
        pass

    def is_taking(self, course):
        """ Returns true if student is registered for a course """

        #TODO write your own implementation here
        pass

    def __str__(self):
        """ String representation of a Student object """
        return "({0}, {1}, {2})".format(self.name, self.get_real_year(), self.calculate_gpa())


class Course(object):
    """ docstring of a Course object.
    Course have the following properties:
    Attributes:
        code: A string representing the course code (i.e CS1301)
        credits: An integer representing the course's amount of credits (i.e 3)
        instructor: An Instructor object representing the instructor of the course
    """

    def __init__(self, code, credits, instructor):
        """Initialize a Course object whose code is *code*, credits is *cresits*, and instructor is *instructor*."""

        #TODO write your own implementation here
        pass

    def get_code(self):
        """ returns string representing the course code """

        #TODO write your own implementation here
        pass

    def get_credits(self):
        """ returns int representing the course credits """

        #TODO write your own implementation here
        pass

    def __str__(self):
        """ String representation of a Course object """
        return "({0}, {1}, {2})".format(self.code, self.credits, self.instructor)
    def __repr__(self):
        return "<Course object: ({0}, {1}, {2})>".format(self.code, self.credits, self.instructor)

class Instructor(object):
    """docstring of an Instructor object.
    Instructor have the following properties:
        Attributes:
            name: A string representing the instructor name (i.e CS1301)"""
    def __init__(self, name):
        """Initialize an Instructor object whose name is *name*."""

        #TODO write your own implementation here
        pass

    def assign_grade(self, student, course, grade):
        """ If student is taking a course, change the student's grade in a course by *grade*. grade is a number between 0 and 4 inclusively. The max a student can get in a course is 4."""

        #TODO write your own implementation here
        pass

    def __str__(self):
        """ String representation of an Instructor object """
        return "{0}".format(self.name)

    def __repr__(self):
        return "<Instructor object: ({0})>".format(self.name)

if __name__ == '__main__':
    pass