EditUsers

os.loadAPI("hash")
local passwordTable = {}

if (fs.exists("loginPasswords.secure.txt")) then
    local passwordFile = fs.open("loginPasswords.secure.txt", "r")
    passwordTable = textutils.unserialize(passwordFile.readAll()) or {}
    passwordFile.close()
end

while true do
    term.clear()
    term.setCursorPos(1, 1)
    print("Username to create or edit:")
    local userName = ""
    while true do
        event, return1 = os.pullEvent()
        if (event == "char") then
            userName = userName .. return1
            write(return1)
        elseif (event == "key") then
            if (return1 == 28) then
                write("\n")
                break
            elseif (return1 == 14) then
                termX, termY = term.getCursorPos()
                if (termX > 0) then
                    term.setCursorPos(termX - 1, termY)
                else
                    term.setCursorPos(termX, termY)
                end
                write(" ")
                if (termX > 0) then
                    term.setCursorPos(termX - 1, termY)
                else
                    term.setCursorPos(termX, termY)
                end
                userName = string.sub(userName, 1, string.len(userName) - 1)
            end
        end
    end

    print("New password:")
    local newPassword1 = ""
    while true do
        event, return1 = os.pullEvent()
        if (event == "char") then
            write("*")
            newPassword1 = newPassword1 .. return1
        elseif (event == "key") then
            if (return1 == 28) then
                write("\n")
                break
            elseif (return1 == 14) then
                termX, termY = term.getCursorPos()
                if (termX > 0) then
                    term.setCursorPos(termX - 1, termY)
                else
                    term.setCursorPos(termX, termY)
                end
                write(" ")
                if (termX > 0) then
                    term.setCursorPos(termX - 1, termY)
                else
                    term.setCursorPos(termX, termY)
                end
                newPassword1 = string.sub(newPassword1, 1, string.len(newPassword1) - 1)
            end
        end
    end

    print("Confirm:")
    local newPassword2 = ""
    while true do
        event, return1 = os.pullEvent()
        if (event == "char") then
            write("*")
            newPassword2 = newPassword2 .. return1
        elseif (event == "key") then
            if (return1 == 28) then
                write("\n")
                break
            elseif (return1 == 14) then
                termX, termY = term.getCursorPos()
                if (termX > 0) then
                    term.setCursorPos(termX - 1, termY)
                else
                    term.setCursorPos(termX, termY)
                end
                write(" ")
                if (termX > 0) then
                    term.setCursorPos(termX - 1, termY)
                else
                    term.setCursorPos(termX, termY)
                end
                newPassword2 = string.sub(newPassword2, 1, string.len(newPassword2) - 1)
            end
        end
    end

    if (newPassword1 == newPassword2) then
        -- passwordHash = hash.hash(newPassword1)
        passwordHash = hash.sha256(newPassword1)
        passwordTable[userName] = passwordHash
    else
        shell.run(shell.getRunningProgram())
        return
    end

    print("Do you want to do more?")
    userYesNo = io.read()
    if (userYesNo == "yes" or userYesNo == "Yes") then
        -- do nothing :P
    else
        break
    end
end

local passwordFile2 = fs.open("loginPasswords.secure.txt", "w")
passwordFile2.write(textutils.serialize(passwordTable))
passwordFile2.close()

os.unloadAPI("hash")