print("MSU Undergraduate Tuition Calculator.")
print("")

#  Chunk below establishes strings, defines strings, and defines ints
YES = "yes"
NO = "no"
FRESHMAN = "freshman"
SOPHOMORE = "sophomore"
JUNIOR = "junior"
SENIOR = "senior"
main_loop = 0  # Broken at end
grade_loop = 0  # Needs to be reset
credit_loop = 0  # Needs to be reset
college = ""  # Needs to be reset
COE_admit = ""  # Needs to be reset
grade = ""  # Needs to be reset
ENGINEERING = "engineering"
HEALTH = "health"
SCIENCES = "sciences"
BUSINESS = "business"
CMSE = "cmse"
NONE = "none"
is_JMC = "" # NEEDS TO BE RESET
ASMU_TAX = 21
RADIO_TAX = 3
is_international = "" #RESET
major = "" #  NEEDS TO BE RESET
is_resident = ""

while main_loop == 0:
    #  Chunk below asks if user is resident and international if necessary
    resident_ask = input("Resident (yes/no): ")
    if resident_ask.lower() == YES:
        is_resident = YES
    elif resident_ask.lower() == NO or resident_ask.lower() != YES:
        is_resident = NO
        inter_ask = input("International (yes/no): ")
        if inter_ask.lower() == YES:
            is_international = YES
        elif inter_ask.lower() == NO or inter_ask.lower() != NO:
            is_international = NO
    #  Loop below asks for grade until valid one is entered
    while grade_loop != 1:
        grade_ask = input("Level—freshman, sophomore, junior, senior: ")
        if grade_ask.lower() == FRESHMAN:
            grade = grade + FRESHMAN
            print(grade)
            grade_loop = 1
        elif grade_ask.lower() == SOPHOMORE:
            grade = grade + SOPHOMORE
            grade_loop = 1
        elif grade_ask.lower() == JUNIOR:
            grade = grade + JUNIOR
            grade_loop = 1
        elif grade_ask.lower() == SENIOR:
            grade = grade + SENIOR
            grade_loop = 1
        else:
            print("Invalid input. Try again.")
    #  Chunk below asks user about college they are in and assigns major
    if grade == SENIOR or grade == JUNIOR:
        college_ask = input("Enter college as business, engineering, health, sciences, or none:\n")
        college = college + college_ask
        if college.lower() == ENGINEERING:
            major = major + ENGINEERING
        elif college.lower() == BUSINESS:
            major = major + BUSINESS
        elif college.lower() == HEALTH:
            major = major + HEALTH
        elif college.lower() == SCIENCES:
            major = major + SCIENCES
        print("Is your major CMSE (\"Computational Mathematics and Engineering\")")
        is_cmse = input("(yes/no): ")
        if is_cmse.lower() == YES:
            major = major + CMSE
        elif major != ENGINEERING and major != BUSINESS and major != HEALTH and major != SCIENCES and major != CMSE:
            major = major + NONE
        if major == NONE or major == CMSE:
            JMC_ask = input("Are you in the James Madison College (yes/no): ")
            if JMC_ask.lower() == YES:
                is_JMC = YES
            elif JMC_ask.lower() == NO or JMC_ask.lower() != YES:
                is_JMC = NO

    elif grade == FRESHMAN or SOPHOMORE:
        is_COE_admit = input("Are you admitted to the College of Engineering (yes/no) ")
        if is_COE_admit.lower() == YES:
            COE_admit = COE_admit + YES
        elif is_COE_admit.lower() == NO or is_COE_admit.lower() != YES:
            COE_admit = COE_admit + NO
        if COE_admit == NO:
            JMC_ask = input("Are you in the James Madison College (yes/no): ")
            if JMC_ask.lower() == YES:
                is_JMC = YES
            elif JMC_ask.lower() == NO or JMC_ask.lower() != YES:
                is_JMC = NO
    #  Chunk below calculates credits
    while credit_loop != 1:
        credit_ask = input("Credits: ")
        if credit_ask.isdigit() == True:
            credits = int(credit_ask)
            if credits > 0:
                credits = credits
                credit_loop = 1
            elif credits <= 0:
                print("Invalid Input. Try Again.")
        else:
            print("Invalid Input. Try Again.")
    #  Chunk below calculates Tuition
    cost = 0
    # Student Voted Costs
    cost = ASMU_TAX + RADIO_TAX
    if is_JMC == YES:
        cost = cost + 7.5
    else:
        cost = cost
    if credits >= 6:
        cost = cost + 5
    #  Special Fees for international
    if is_international == YES and credits <= 4:
        cost = cost + 375
    elif is_international == YES and credits >4:
        cost = cost + 750
    #  Special Fees for CMSE
    if major == CMSE and credits <= 4:
        cost = cost + 402
    elif major == CMSE and credits > 4:
        cost = cost + 670
    #  Special fees for sciences
    if major == SCIENCES and credits <= 4:
        cost = cost + 50
    elif major == SCIENCES and credits > 4:
        cost = cost + 100
    #  Special fees for health
    if major == HEALTH and credits <= 4:
         cost = cost + 50
    elif major == HEALTH and credits > 4:
        cost = cost + 100
    #  Special fees for business
    if major == BUSINESS and credits <= 4:
        cost = cost + 113
    elif major == BUSINESS and credits > 4:
        cost = cost + 226
    #  Special fees for college of engineering
    if COE_admit == YES and credits <= 4:
        cost = cost + 402
    elif COE_admit == YES and credits > 4:
        cost = cost + 670
#  Core costs [FRESHMAN]
    elif grade == FRESHMAN and credits < 12 and is_resident == YES:
        cost = cost + (credits * 482)
        print("a")
    elif grade == FRESHMAN and credits > 11 and credits < 19 and is_resident == YES:
        cost = cost + 7230
        print("b")
    elif grade == FRESHMAN and credits > 18 and is_resident == YES:
        cost = cost + 7230 + ((credits-18)*482)
        print("c")
    elif grade == FRESHMAN and credits < 12 and is_resident == NO:
        cost = cost + (credits * 1325.5)
        print("d")
    elif grade == FRESHMAN and credits > 11 and credits < 19 and is_resident == NO:
        cost = cost + 19883
        print("e")
    elif grade == FRESHMAN and credits > 18 and is_resident == NO:
        cost = cost + 19883 + ((credits-18)*1325.5)
        print("f")
#  Core costs [SOPHOMORE]
    elif grade == SOPHOMORE and credits < 12 and is_resident == YES:
        cost = cost + (credits * 494)
    elif grade == SOPHOMORE and credits > 11 and credits < 19 and is_resident == YES:
        cost = cost + 7410
    elif grade == SOPHOMORE and credits > 18 and is_resident == YES:
        cost = cost + 7410 + ((credits - 18) * 494)
        ("this")
    elif grade == SOPHOMORE and credits < 12 and is_resident == NO:
        cost = cost + (credits * 1325.5)
    elif grade == SOPHOMORE and credits > 11 and credits < 19 and is_resident == NO:
        cost = cost + 19883
    elif grade == SOPHOMORE and credits > 18 and is_resident == NO:
        cost =  cost + 19883 + ((credits - 18) * 1325.5)
#  Core costs [JUNIOR and SENIOR]
    if grade == JUNIOR and credits < 12 and is_resident == YES and major != BUSINESS and major != ENGINEERING and major != BUSINESS:
        cost = cost + (credits * 555)
    elif grade == JUNIOR and credits > 11 and credits < 19 and is_resident == YES and major != BUSINESS and major != ENGINEERING:
        cost = cost + 8325
    elif grade == JUNIOR and credits > 19 and is_resident == YES and major != BUSINESS and major != ENGINEERING:
        cost = cost + 8325 + ((credits-18)*555)
        print(3)
    elif grade == JUNIOR or grade == SENIOR and credits < 12 and is_resident == NO and major != BUSINESS and major != ENGINEERING:
        cost = cost + (credits * 1366.75)
        print(4)
    elif grade == JUNIOR or grade == SENIOR and credits > 11 and credits < 19 and is_resident == NO and major != BUSINESS and major != ENGINEERING:
        cost = cost + 20501
        print(5)
    elif grade == JUNIOR or grade == SENIOR and credits > 19 and is_resident == NO and major != BUSINESS and major != ENGINEERING:
        cost = cost + 20501 + ((credits-18)*1366.75)
        print(6)
    elif grade == JUNIOR or grade == SENIOR and credits < 12 and is_resident == YES and major == BUSINESS or major == ENGINEERING:
        cost = cost + (credits * 555)
        print(7)
    elif grade == JUNIOR and credits > 11 and credits < 19 and is_resident == YES and major == BUSINESS:
        cost = cost + 8325
        print(8)
    elif grade == JUNIOR or grade == SENIOR and credits > 19 and is_resident == YES and major == BUSINESS or major == ENGINEERING:
        cost = cost + 8325 + ((credits - 18) * 555)
        print(9)
    elif grade == JUNIOR or grade == SENIOR and credits < 12 and is_resident == NO and major == BUSINESS or major == ENGINEERING:
        cost = cost + (credits * 1366.75)
        print(10)
    elif grade == JUNIOR or grade == SENIOR and credits > 11 and credits < 19 and is_resident == NO and major == BUSINESS or major == ENGINEERING:
        cost = cost + 20501
        print(11)
    elif grade == JUNIOR or grade == SENIOR and credits > 19 and is_resident == NO and major == BUSINESS or major == ENGINEERING:
        cost = cost + 20501 + ((credits - 18) * 1366.75)
        print(12)
    #Chunk below prints out tuition cost
    tuiton = '${:,.2f}'.format(cost)
    print("Tuition is ", tuiton)
    go_again = input("Do you want to do another calculation (yes/no): ")
    if go_again.lower() == YES:
        grade_loop = 0
        grade = ""
        credit_loop = 0
        is_JMC = ""
        major = ""
        COE_admit = ""
        is_international = ""
        college = ""
        cost = 0
        is_resident = ""
    elif go_again.lower() == NO:
        main_loop = 1