mos

--Minif OS Main Core

osScreenSizeX, osScreenSizeY = term.getSize()

function osFillBG(selColor)
  paintutils.drawFilledBox(1,1,osScreenSizeX,osScreenSizeY,selColor)
  term.setCursorPos(1,1)
  term.setBackgroundColor(selColor)
  if selColor == colors.white then
    term.setTextColor(colors.black)
  else
    term.setTextColor(colors.white)
  end
end

function osBSOD(message, cause, tips)
  osFillBG(colors.blue)
  print("Critical System Error!")
  print(message)
  print(cause)
  print(tips)
  print("")
  print("Press any key to continue.")
  sleep(2)
  local blank1, blank2 = os.pullEvent()
end

function osDrawWindow(name)
  paintutils.drawFilledBox(3,3,osScreenSizeX-2,osScreenSizeY-2,colors.white)
  paintutils.drawBox(3,3,osScreenSizeX-2,5,colors.lightGray)
  term.setBackgroundColor(colors.white)
  term.setTextColor(colors.black)
  term.setCursorPos(4,4)
  term.write(name)
end

function osConfirm(name,message,detail)
  osDrawWindow(name)
  term.setCursorPos(4,7)
  term.write(message)
  term.setCursorPos(4,8)
  term.write(detail)
  paintutils.drawBox(4,11,osScreenSizeX-3,11,colors.green)
  term.setCursorPos(5,11)
  term.write("Yes")
  paintutils.drawBox(4,13,osScreenSizeX-3,13,colors.red)
  term.setCursorPos(5,13)
  term.write("No")
  local choice = false
  while true do
    osPEvent, osPB, osPX, osPY = os.pullEvent("mouse_click")
    if osPX >= 3 and osPX <=osScreenSizeX-2 then
      if osPY == 11 then
        choice = true
        return true
      else if osPY == 13 then
        return false
      end
      end
    end
  end
  return choice
end

function osDrawPerm(prog)
  paintutils.drawFilledBox(3,3,osScreenSizeX-2,osScreenSizeY-2,colors.white)
  paintutils.drawBox(3,3,osScreenSizeX-2,5,colors.lightGray)
  term.setCursorPos(4,4)
  term.setBackgroundColor(colors.white)
  term.setTextColor(colors.red)
  term.write("Permissions Error")
  term.setCursorPos(4,7)
  term.setTextColor(colors.black)
  term.write("You do not have permission")
  term.setCursorPos(4,8)
  term.write("To access the program: "..prog)
  term.setCursorPos(4,10)
  term.write("Press any key to exit.")
  while true do
    local event = os.pullEvent()
    if event == "mouse_click" or event == "key" then
      return
    end
  end
end


function osDrawDesktop()
  osFillBG(colors.cyan)
  if mos.osUserBGImageExists then
    paintutils.drawImage(os_UserBGImage,1,2)
  else
    if osBGImageExists then
      paintutils.drawImage(os_BGImage,1,1)
    end
  end
end

function osDrawMenu()
  paintutils.drawBox(1,1,mos.osScreenSizeX,1,colors.blue)
  term.setBackgroundColor(colors.lightBlue)
  term.setTextColor(colors.black)
  term.setCursorPos(1,1)
  term.write("M >")
  term.setCursorPos(5,1)
  term.write("File >")
  term.setCursorPos(12,1)
  term.write("System >")
end

function osDrawAll()
  term.setCursorBlink(false)
  osLoadPrefs()
  osDrawDesktop()
  osDrawMenu()
end

function osLoadPrefs()
  local pref = fs.open("/system/user/"..mos.osEnteredUser.."/config", "r")
  local readFile = pref.readLine()
  if fs.exists(readFile) and not (fs.isDir(readFile)) then
    os_UserBGImage = paintutils.loadImage(readFile)
    mos.osUserBGImageExists = true
  end
  local readLine = pref.readLine()
  if readLine == "true" then
    mos.osUserAdmin = true
  end
  pref.close()
end