import time #Allows us to use the time.sleep command
import sys #Allows us to use sys commands (For us it is killing the program on line 50)
import random



def startup():

    print('\n'*200)

    username = input('Enter your username: ')
    password = input('Enter your password: ')

    if username == 'leeman' and password == 'password': #Checking the username and password match

        main_menu() #Finding Main Menu


    else:

        print('You have entered an incorrect username and password')
        time.sleep(2) #Wating 2 seconds
        startup()



#--------------------------------------------------------------------------------------------------------------------------------------------------------------




def main_menu():

    print('\n'*200) #Printing enough lines so that the startup menu can't be seen


    print('----- MAIN MENU -----')  #
    print('Create New Student (C)') #
    print('Delete a Student   (D)') # MAIN MENU GUI
    print('View Students      (V)') #
    print('Exit Program       (E)') #
    print('')

    decision = input('What is your decision: ')

    if decision == 'C':
        createstudent()

    elif decision == 'D':
        deletestudent()

    elif decision == 'V':
        viewstudent()

    elif decision == 'E':
        sys.exit()


    else:
        print('You have entered an invalid decision')
        time.sleep(2)
        print('Returning to main menu ')
        time.sleep(2)
        main_menu()


#--------------------------------------------------------------------------------------------------------------------------------------------------------------

def createstudent():
    print('\n'*200)

    fname=input("What is the student's forename: ")

    sname=input("What is the student's surname: ")

    dob=input("What is the student's birthday in the format 00/00/00: ")

    iid=random.randint(1,999)

    sid=str(iid)

    gender1=input("What is the student's gender out of Male(M),Female(F) and other(O)" )

    if gender1 == 'M':
        gender2 = ('male')

    elif gender1 == 'F':
        gender2 == female

    elif gender1 == 'O':
        gender2 = input('What gender would the student like to be refered as: ')

    else:
        print('You have entered an invalid gender')
        createstudent()

    shome=input("What is the student's home phone number: ")

    saddress=input("What is the student's home address: ")

    sform=input("What is the student's form group: ")



    with open('students.txt','a') as student:
        student.write('\nID'+sid)    #
        student.write('\n'+fname)    #
        student.write('\n'+sname)    #
        student.write('\n'+dob)      #
        student.write('\n'+gender2)  # Writing new students to file
        student.write('\n'+shome)    #
        student.write('\n'+saddress) #
        student.write('\n'+sform)    #
        student.write('\n'*2)        #

        crdecision=input('Do you want to add another student: ')
        if crdecision == 'Yes':
            createstudent()
        else:
            print('Returning to main menu ')
            time.sleep(2)
            main_menu()









#----------------------------------------------------------------------------------------------------------------------------------------------------------------

def deletestudent():
    pass





#----------------------------------------------------------------------------------------------------------------------------------------------------------------
def viewstudent():

    print('\n'*200)

    IDinput=input("Please enter in the student's ID you want to display ")



    with open('students.txt','r') as student:
        data = student.read().splitlines() #Making is so it doesn't make new line between each line of information
    for i in range(len(data)):
        if data[i][:2]=='ID':
            ID = data[i][2:]
            if IDinput == ID:
                print('\n'*2)
                print("ID: "+ID)
                fname=data[i+1]
                sname=data[i+2]
                dob=data[i+3]
                gender=data[i+4]
                shome=data[i+5]
                saddress=data[i+6]
                sform=data[i+7]

                print("Forename: "+fname)
                print("Surname: "+sname)
                print("Date of Birth: "+dob)
                print("Gender: "+gender)
                print("Phone Number: "+shome)
                print("Home Address: "+saddress)
                print("Form Group: "+sform)
                print('\n'*2)

                vstudent=input('Do you want to display another student when you are done ')

                if vstudent == 'Yes':
                    viewstudent()

                elif vstudent == 'yes':
                    viewstudent()

                else:
                    time.sleep(1)
                    print('Returning to main menu')
                    print('\n'*2)

                    time.sleep(3)
                    main_menu()

            else:
                print('You have entered an invalid ID ')
                time.sleep(1)
                print('Returning to view student menu ')
                time.sleep(2)
                viewstudent()














startup()