--Jazza_Hat
userNames = {}

local function clear()
    term.clear()
    term.setCursorPos(1,1)
end

local function draw(err)
        if err == true then
            print(err)
            sleep(2)
        end
    clear()
    print("Hello and welcome!")
    print("1.Create account")
    print("2.Login")
    local event, param1 = os.pullEvent ("char")
        if param1 == "1" then
                write("Please enter your Username: ")
                local username = read()
                write("Please enter password: ")
                local password = read("*")
                local sha1User = StrUtils.SHA1(username)
                local sha1Pass = StrUtils.SHA1(password)
                    if userNames[sha1User] == true then
                            draw("Invalid username and, or Password")
                    end
                userNames[sha1User] = sha1Pass
                print("Thank you for creating an account, press any key to continue")
                local event, param1 = os.pullEvent ("char")
                    draw()
        elseif param1 == "2" then
                write("Please enter your Username: ")
                local username = read()
                write("Please enter password: ")
                local password = read("*")
                local sha1User = StrUtils.SHA1(username)
                local sha1Pass = StrUtils.SHA1(password)
                    if userNames[sha1User] == sha1Pass then
                        draw("Hello")
                    end
                draw("Invalid username and, or Password")
        else
                draw("Unknown function")
        end
end

draw()