BSOD

verze = "21.1018.R1"
runstart = 0

local w,h = term.getSize()
local function prc(text, y)
  local w = term.getSize()
  local _, cy = term.getCursorPos()
  term.setCursorPos(math.ceil((w-#text)/2), y or cy)
  write(text)
end

function clear()
  term.clear()
  term.setBackgroundColor(colors.white)
  for i=1,w do
    for j=1,h do
      term.setCursorPos(i,j)
      write(" ")
    end
  end
end

function checkVyvoj() if not fs.exists("/C/system/Users/"..user.."/vyvoj") then vyvoj = false else vyvoj = true end end

function start ()

    if not fs.exists ("/C/system/RAM/bluescreen") then
        local data = fs.open ("/C/system/RAM/bluescreen", "w")
        data.close ()
    if not fs.exists ("/C/system/.core/desktop.lua") then
    shell.run ("pastebin get HyhMtGvd /C/system/.core/desktop.lua")
    end

    local f=fs.open("/C/system/RAM/user","r")
    user=f.readLine()
    f.close()

       checkVyvoj()

    if fs.exists("/C/system/Users/"..user.."/startupProgram") then
        if fs.exists("/C/system/Users/"..user.."/startupProgram") then
        local f=fs.open("/C/system/Users/"..user.."/startupProgram","r")
        afterstart=f.readLine()
        f.close()
        runstart = 1
        end
    end

    if fs.exists("/C/system/.core/display") then
        local f=fs.open("/C/system/.core/display","r")
        monitor=f.readLine()
        f.close()
            term.setTextColor(colors.white)
            if runstart == 1 then
            runstart = 0
            term.clear()
            prc("Connected to an external monitor",h/2)
            term.setTextColor(colors.black)
            shell.run("monitor "..monitor.." "..afterstart)
            else
            term.clear()
            prc("Connected to an external monitor",h/2)
            term.setTextColor(colors.black)
            shell.run("monitor "..monitor.." /C/system/.core/desktop.lua")
            end
    end
    if runstart == 1 then
        runstart = 0
        shell.run(afterstart)
        shell.run("/C/system/.core/desktop.lua")
        else
        shell.run("/C/system/.core/desktop.lua")
    end
    if fs.exists("/C/system/RAM/logout") then shell.run("/startup.lua") end
end

    checkVyvoj()
    if vyvoj then error() end

    os.pullEvent = os.pullEventRaw

    term.setBackgroundColor(colors.blue)
    term.setTextColor(colors.white)
    term.clear()
    prc("Pepdroll has been Crashed!",2)
    local shutWin = window.create(term.current(),4,5,21,4)
    shutWin.setBackgroundColor(colors.lightBlue)
    shutWin.clear()
    shutWin.setCursorPos(2,2)
    shutWin.write("Turn off computer")
    shutWin = window.create(term.current(),4,10,21,4)
    shutWin.setBackgroundColor(colors.lightBlue)
    shutWin.clear()
    shutWin.setCursorPos(2,2)
    shutWin.write("Restart computer")
    shutWin = window.create(term.current(),4,15,21,4)
    shutWin.setBackgroundColor(colors.lightBlue)
    shutWin.clear()
    shutWin.setCursorPos(2,2)
    shutWin.write("Commander")
    shutWin = window.create(term.current(),28,5,21,4)
    shutWin.setBackgroundColor(colors.lightBlue)
    shutWin.clear()
    shutWin.setCursorPos(2,2)
    shutWin.write("Reset Core & Setting")
    shutWin = window.create(term.current(),28,10,21,4)
    shutWin.setBackgroundColor(colors.lightBlue)
    shutWin.clear()
    shutWin.setCursorPos(2,2)
    shutWin.write("Reinstall system")
    shutWin = window.create(term.current(),28,15,21,4)
    shutWin.setBackgroundColor(colors.lightBlue)
    shutWin.clear()
    shutWin.setCursorPos(2,2)
    checkVyvoj()
    if vyvoj then shutWin.write("Disable Dev Mode") else shutWin.write(" Enable Dev Mode ") end

    while true do
    local event, button, x, y = os.pullEvent("mouse_click")

        if x >= 4 and x <= 24 and y >= 5 and y <= 8 then
        os.shutdown()
        elseif x >= 4 and x <= 24 and y >= 10 and y <= 13 then
        os.reboot()
        elseif x >= 4 and x <= 24 and y >= 15 and y <= 18 then
        term.setBackgroundColor(colors.black)
        term.setCursorPos (1,1)
        term.clear ()
        term.setTextColor(colors.yellow)
        print "Commander"
        term.setTextColor(colors.white)
        term.setCursorPos (1,2)
        if not fs.exists("/C/system/api/commander.lua") then
        shell.run ("pastebin get LY8cUArW /C/system/api/commander.lua")
        end
        shell.run ("/cd /")
        shell.run ("/C/system/api/commander.lua")
        elseif x >= 28 and x <= 48 and y >= 5 and y <= 8 then
        fs.delete("/C/system/.core/defmodem")
        fs.delete("/C/system/.core/defuser")
        fs.delete("/C/system/.core/display")
        os.reboot()
        elseif x >= 28 and x <= 48 and y >= 10 and y <= 13 then
        fs.delete("/C")
        os.reboot()
        elseif x >= 28 and x <= 48 and y >= 15 and y <= 18 then
        if vyvoj then
            fs.exists("/C/system/Users/"..user.."/vyvoj")
        else
        local data=fs.open("/C/system/Users/"..user.."/vyvoj","w") data.close()
        os.reboot()
        end


        end
    end
end

start ()