desktop1.1

--Minif OS
--By Minif
--Load Cores
if fs.exists("/system/cores/file") then
  os.loadAPI("/system/cores/file")
else
  mos.osBSOD("Critical core missing.","/system/cores/file is missing, and is needed to run.","Please re-install this file")
end

--Functions and Variables
mos.osRunning = true
mos.osUserBGImageExists = false
mos.osUserAdmin = false

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

--Drawing
function osDrawDesktop()
  mos.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

--Menu Routines
function osMenuM()
  term.setBackgroundColor(colors.gray)
  term.setTextColor(colors.white)
  term.setCursorPos(1,1)
  term.write("M v")
  term.setCursorPos(1,2)
  term.write("Info     ")
  term.setCursorPos(1,3)
  term.write("Log Out  ")
  term.setCursorPos(1,4)
  term.write("Shut Down")
  osPEvent, osPB, osPX, osPY = os.pullEvent("mouse_click")
  if osPEvent == "mouse_click" then
    if osPB == 1 and osPY == 3 and osPX<=9 then
      mos.osRunning = false
    else if osPB == 1 and osPY == 4 and osPX<=9 then
      os.shutdown()
    else if osPB == 1 and osPY == 2 and osPX<=9 then
      if fs.exists("system/tools/about") then
        shell.run("system/tools/about")
      else
        mos.osBSOD("Critical file missing.","/system/tools/about is missing, and is needed to run.","Please re-install this file")
      end
    end
    end
    end
  end
end

function osMenuFile()
  term.setBackgroundColor(colors.gray)
  term.setTextColor(colors.white)
  term.setCursorPos(5,1)
  term.write("File v")
  term.setCursorPos(5,2)
  term.write("Write ")
  term.setCursorPos(5,3)
  term.write("Paint ")
  term.setCursorPos(5,4)
  term.write("Search")
  term.setCursorPos(5,5)
  term.write("build ")

  osPEvent, osPB, osPX, osPY = os.pullEvent("mouse_click")
  if osPB == 1 and osPY == 2 and osPX >= 5 and osPX <= 10 then
    if fs.exists("system/tools/medit") then
      shell.run("system/tools/medit")
    else
      mos.osBSOD("Critical file missing.","/system/tools/medit is missing, and is needed to run.","Please re-install this file")
    end
  else if osPB == 1 and osPY == 3 and osPX >= 5 and osPX <=10 then
    if fs.exists("system/tools/mpaint") then
      shell.run("system/tools/mpaint")
    else
      mos.osBSOD("Critical file missing.","/system/tools/mpaint is missing, and is needed to run.","Please re-install this file")
    end
  else if osPB == 1 and osPY == 5 and osPX >= 5 and osPX <= 10 then
    if fs.exists("run") then
      shell.run("run")
    end
  else if osPB == 1 and osPY == 4 and osPX >= 5 and osPX <= 10 then
    if fs.exists("system/tools/look") then
      shell.run("system/tools/look")
    else
      mos.osBSOD("Critical file missing.","/system/tools/look is missing, and is needed to run.","Please re-install this file")
    end
  end
  end
  end
  end
end

function osMenuSystem()
  term.setBackgroundColor(colors.gray)
  term.setTextColor(colors.white)
  term.setCursorPos(12,1)
  term.write("System v")
  term.setCursorPos(12,2)
  term.write("Shell      ")
  term.setCursorPos(12,3)
  term.write("Settings   ")
  term.setCursorPos(12,4)
  term.write("Run Program")

  osPEvent, osPB, osPX, osPY = os.pullEvent("mouse_click")
  if osPB == 1 and osPY == 2 and osPX >= 12 and osPX <= 22 then
    if mos.osUserAdmin then
      mos.osFillBG(colors.black)
      term.setBackgroundColor(colors.black)
      term.setTextColor(colors.white)
      print("Enter 'exit' to return to MinifOS")
      shell.run("shell")
      return
    else
      mos.osDrawPerm("Shell")
    end
  else if osPB == 1 and osPY == 3 and osPX >= 12 and osPX <=22 then
    if fs.exists("system/tools/settings") then
      shell.run("system/tools/settings")
      return
    else
      mos.osBSOD("Critical file missing.","/system/tools/settings is missing, and is needed to run.","Please re-install this file")
    end
  else if osPB == 1 and osPY == 4 and osPX >= 12 and osPX <= 22 then
    if fs.exists("system/tools/run") then
      shell.run("system/tools/run")
    else
      mos.osBSOD("Critical file missing.","/system/tools/run is missing, and is needed to run.","Please re-install this file")
    end
  end
  end
  end
end

--Input Events
local function handleClick(button,x,y)
  if button == 1 and y == 1 and x <= 3 then
    osMenuM()
    osDrawAll()
  end
  if button == 1 and y == 1 and x >= 5 and x <=10 then
    osMenuFile()
    osDrawAll()
  end
  if button == 1 and y == 1 and x >= 12 and x <=19 then
    osMenuSystem()
    osDrawAll()
  end
end

local function menuInput()
  osPEvent, osP1, osP2, osP3, osP4, osP5 = os.pullEvent()
  if osPEvent == "mouse_click" then
    handleClick(osP1,osP2,osP3)
  end
end

--Execution

osLoadPrefs()
osDrawAll()
while mos.osRunning do
  menuInput()
end