import sys

def loginstart():
    print("Welcome To The Login!")
    p = open("password.txt","r")
    actualpassword = p.read()
    p.close()

    u = open("username.txt","r")
    actualusername = u.read()
    u.close()

    if actualusername == "" or actualpassword == "":
        print("We Have Detected That You Have Not Set Any Login Details.")
        newlogin()

    else:
        loginmatch()



#---------------------------------------------------
def newlogin():
    passwordfile = open("password.txt","w")
    passwordfile.write("")
    passwordfile.close

    usernamefile = open("username.txt","w")
    usernamefile.write("")
    usernamefile.close

    usernameentry = input("Please Enter A New Username: ")
    passwordentry = input("Please Enter A New Password: ")
    print("Please restart the program in order to login.")


    passwordfile = open("password.txt","w")
    passwordfile.write(passwordentry)
    passwordfile.close

    usernamefile = open("username.txt","w")
    usernamefile.write(usernameentry)
    usernamefile.close



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

def loginmatch():

    p = open("password.txt","r")
    actualpassword = p.read()
    p.close()

    u = open("username.txt","r")
    actualusername = u.read()
    u.close()

    ihopethisworks = True

    while ihopethisworks == True:
        userusername = input("Enter Username Here: ")
        userpass = input("Enter Password Here: ")

        if userusername != actualusername:
            print("Incorrect Username.")
            ihopethisworks = True

        if userpass != actualpassword:
            print ("Incorrect Password.")
            ihopethisworks = True

        if userpass == actualpassword and userusername == actualusername:
            print ("Login Details Accepted.")
            ihopethisworks = False
            menusystem()

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


def menusystem():
        menurepeat = True
        while menurepeat == True:
            print("Welcome To The Menu System!")
            print("Where would you like to go?")
            print("Enter '1' to go to the Student Information Section.")
            print("Enter '2' to go to the Report Menu Section.")
            print("Enter '3' to go to change your login details.")
            print("Enter '4' to logout.")
            menuinput = input("Enter Here: ")
            if menuinput == "1":
                studentsinformation()
                menurepeat = False
            elif menuinput == "2":
                reportmenu()
                menurepeat = False
            elif menuinput == "3":
                print("Please confirm your current login details.")
                logincheck()
                menurepeat = False
            elif menuinput == "4":
                print("You have logged out and are being returned to the login!")
                loginstart()
                menurepeat = False


















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

def logincheck():
    p = open("password.txt","r")
    actualpassword = p.read()
    p.close()

    u = open("username.txt","r")
    actualusername = u.read()
    u.close()

    ihopethisworks = True

    while ihopethisworks == True:
        userusername = input("Enter Username Here: ")
        userpass = input("Enter Password Here: ")

        if userusername != actualusername:
            print("Incorrect Username.")
            ihopethisworks = True

        if userpass != actualpassword:
            print ("Incorrect Password.")
            ihopethisworks = True

        if userpass == actualpassword and userusername == actualusername:
            print ("Login Details Accepted.")
            ihopethisworks = False
            newlogin()




def studentsinformation():
    studentinforepeat = True
    while studentinforepeat == True:
        print("Welcome to the Student Information Section.")
        print("Enter '1' to Enter New Students Information.")
        print("Enter '2' to Read Student Information.")
        print("Enter '3' to Go Back.")
        studentinfoinput = input("Enter Here: ")
        if studentinfoinput == "1":
            enterstudents()
            studentinforepeat = False
        elif studentinfoinput == "2":
            studentidretrieve()
            studentinforepeat = False
        elif studentinfoinput == "3":
            menusystem()


def enterstudents():
    studentID = input("Please enter the students ID: ")
    studentforename = input("Please enter the students forename: ")
    studentsurname = input("Please enter the students surname: ")
    studentdob = input("Please enter the students date of birth: ")
    studentaddress = input("Please enter the students address: ")
    studentphonenumber = input("Please enter the students home phone number: ")
    studentgender = input("Please enter the students gender: ")
    studenttutorgroup = input("Please enter the students tutor group: ")
    studentemail = input("Please enter the students email address: ")

    studentfilename = studentID + " information.txt"
    es = open(studentfilename, "w+")
    es.write("Student ID: ")
    es.write(studentID)
    es.write("\n")
    es.write("Forename: ")
    es.write(studentforename)
    es.write("\n")
    es.write("Surname: ")
    es.write(studentsurname)
    es.write("\n")
    es.write("Date of Birth: ")
    es.write(studentdob)
    es.write("\n")
    es.write("Address: ")
    es.write(studentaddress)
    es.write("\n")
    es.write("Phone Number: ")
    es.write(studentphonenumber)
    es.write("\n")
    es.write("Gender: ")
    es.write(studentgender)
    es.write("\n")
    es.write("Tutor Group: ")
    es.write(studenttutorgroup)
    es.write("\n")
    es.write("Email: ")
    es.write(studentemail)
    es.close()

    print("Successfully entered student information.")

    studentsinformation()







def logout():
    print("Welcome to the logout function!")

def studentidretrieve():
    studentidretrieve = input("Please input the students ID.")
    studentfilenameretrieve = studentidretrieve + " information.txt"
    esr = open(studentfilenameretrieve,'r')
    studentinfo = esr.read()
    print(studentinfo)
    esr.close()







def reportmenu():
    print("Welcome to the report menu function!")

def report1():
    print("Welcome to report 1!")

def report2():
    print("Welcome to report 2!")

def report3():
    print("Welcome to report 3!")



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

loginstart()