Door Lock System

--[[
The Programm is not working at the moment because it uses to much Resources
and Crashes because of that Ingame. I will edit it in the near Future and also
Make it more diverse.

Some Examples:
  - Making it possible to change Color of the Messages
  - Making Alarm System more Userfriendly. (Permanent Redstone Signal etc)
  - Making LockDown Mode Saves failed tries after Shutdown and Reboot.
  - Create an Dummy Password
  - A Settings Menu <Maybe>
  - more coming soon..
]]--


-- Main Settings:

-- Password to open the Door.
DoorPass    = "Password"
-- Password to get into the Pc.
MasterPass  = "Password"
-- Side the Redstone should be Output to Activate the Door.
DoorSide    = "Side"
-- Amount of time the Door should be kept Open.
rsTime      = "Amount"
-- Amount of time befor the Door will Open.
DoorDelay   = "Amount"


-- Displayed Messages:

-- Message that appears when System Starts.
StartMSG    = "Input Passwort: "
-- Message that appears when Password was Correct.
CorrectMSG  = "Access Granted"
-- Message that appears when Password was Incorrect.
WrongMSG    = "Access Denied"
-- Message that appears when the MasterPassword is used.
MasterMSG   = "Programm shutting down"


-- Toggable Features:

-- Alarm System (SEPERAT Redstone Connection needed)

-- Toogles if the Alarm can be used.
Alarm         = false
-- Password to Deactivate the Alarm.
AlarmOffPass  = "Password"
-- Where the Connection of the Alarm Redstone is.
AlarmSide     = "Side"
-- Message that appears when the Alarm is Deactivated.
AlarmMSG      = "Alarm deactivated"


-- System with a fixed amount of tries.

-- Toggles if LockDown Mode works.
LockSystem    = false
-- Password to Deactivated LockDown Mode.
SecurityPass  = "Password"
-- Amount of tries a Player has befor SecurityMode will be activated.
Tries         = 3
-- Message that appears when LockDownMode is active.
LockDownMSG   = "System is in Lockdown.\nInput Password: "


-- Maintance System (As an way to save the entry to the redstone part of the build)

-- Toggles if Maintance can be used
Maintance     = false
-- Password to toggle the Maintance System
MaintancePass = "Password"
-- Side wherer the connection of the Maintance is
MaintanceSide = "Side"
-- Message that appears when Maintance is activated
MaintanceMSG  = "Toggled MaintanceMode"


-- Do not edit after this part, except you know what you are doing.

os.pullEvent = os.pullEventRaw

-- Counts the amount of failed tries made.
CountTry = {}

-- Checks which Mode Maintance is.
MaintanceMode = {}

-- Clears the Screen and Puts the Cursor to the Top Left.
local function clear()
    term.clear()
    term.setCursorPos(1,1)
end

-- Function to Activate the Redstone for the Door.
local function rsDoor()
    sleep(DoorDelay)
    rs.setOutput(DoorSide, true)
    sleep(rsTime)
    rs.setOutput(DoorSide, false)
end

-- Saves failed Tries
local function SaveTries()
    fs.makeDir("DoorLock")
    fs.open("DoorLock/SaveData","w")
    file.writeLine(CountTry)
    file.close()
end

-- Load failed tries
local function LoadTries()
    local Number = {}

    fs.open("DoorLock/SaveData","r")
    file.readLine()
    table.insert(Number,line)
    file.close()
    CountTry = CountTry + Number
end

-- Saves Maintance Mode
local function SaveMaintance()
    fs.open("DoorLock/Maintance","w")
    file.wirteLine(MaintanceMode)
    file.close()
end

-- Load Maintance Mode
local function LoadMaintance()
    local Mode = {}

    fs.open("DoorLock/Maintanc","r")
    file.readLine()
    table.insert(Mode,line)
    file.close()
    MaintanceMode = Mode
end

-- Initiates the LockDown Mode.
local function LockDown()
    if CountTry >= Tries and LockSystem == true then
        return true
     end
end


-- Main Code:

-- Start Position of the Programm
function Main()
    print(StartMSG)
    input = read("*")

    while true do

        LoadTries()
        LoadMaintance()

        -- Compares Input to the given Situations
        if input == DoorPass and LockDown() == false then
            clear()
            print(CorrectMSG)
            rsDoor()
            CountTry = CountTry - CountTry
            clear()
            SaveTries()
            Main()
        elseif input == SecurityPass and LockDown() == true then
            clear()
            print(CorrectMSG)
            sleep(3)
            CountTry = CountTry - CountTry
            clear()
            SaveTries()
            Main()
        elseif input == MasterPass then
            clear()
            print(MasterMSG)
            sleep(2)
            SaveTries()
            Main()
        elseif input == AlarmOffPass and Alarm == true then
            clear()
            print(AlarmMSG)
            sleep(2)
            rs.setOutput(AlarmSide, true)
            clear()
            SaveTries()
            Main()
        elseif input == MaintancePass and Maintance == true and MaintanceMode == false then
            clear()
            print(MaintanceMSG)
            sleep(2)
            rs.setOutput(MaintanceSide, true)
            MaintanceMode = true
            SaveMaintance()
            clear()
            SaveTries()
            Main()
        elseif input == MaintancePass and Maintanc == true and MaintanceMode == true then
            clear()
            print(MaintanceMSG)
            sleep(2)
            rs.setOutput(MaintanceSide, false)
            MaintanceMode = false
            SaveMaintance()
            clear()
            SaveTries()
            Main()
        else
            clear()
            if Alarm == true then
                rs.setOutput(AlarmSide, true)
            end
            print(WrongMSG)
            sleep(3)
            CountTry = CountTry + 1
            clear()
            SaveTries()
            Main()
        end
    end
end