[xOS] Programs

--[[
Programs File
Written by TheShadow989
]]--

os.pullEvent = os.pullEventRaw

local verNumber = "Alpha 1.24"
local nOption = 1

rRead = fs.open("xos/.usertable", "r")
users = textutils.unserialize(rRead.readAll())
rRead.close()
cu = tonumber(users[1])
cs = tonumber(users[cu+1])
cp = tonumber(users[cu+2])

local w,h = term.getSize()

local function drawMenu()
        local time = os.time()
        local formattedTime = textutils.formatTime(time, false)

        term.clear()
        term.setCursorPos(1,1)
        term.write("Logged in as: ")
        term.setTextColor( colors.red )
        term.write(""..users[cu].."")
        term.setTextColor( colors.white )
        term.setCursorPos(1,2)
        write(formattedTime)
        term.setCursorPos(1,19)
        term.write("xOS "..verNumber.." by TheShadow989")

        term.setCursorPos(w-11,1)
        if nOption == 1 then
           term.write("Browser")
        elseif nOption == 2 then
           term.write("Unknown")
        elseif nOption == 3 then
           term.write("Unknown")
        elseif nOption == 4 then
           term.write("Unknown")
        elseif nOption == 5 then
           term.write("Page 2")
        elseif nOption == 6 then
           term.write("Back")
        else
        end
end

function printCentered(y,s)
        local x = math.floor((w - string.len(s)) / 2)
        term.setCursorPos(x,y)
        term.clearLine()
        term.write( s )
end

term.clear()

term.setCursorPos(1,19)
term.write("xOS "..verNumber.." by TheShadow989")

local function drawFrontend()
   printCentered( math.floor(h/2) - 4, "")
   printCentered( math.floor(h/2) - 3, "Programs [Page 1 ]" )
   printCentered( math.floor(h/2) - 2, "")
   printCentered( math.floor(h/2) - 1, ((nOption == 1) and "[ Browser ]") or " Browser " )
   printCentered( math.floor(h/2) + 0, ((nOption == 2) and "[ Unknown ]") or " Unknown " )
   printCentered( math.floor(h/2) + 1, ((nOption == 3) and "[ Unknown ]") or " Unknown " )
   printCentered( math.floor(h/2) + 2, ((nOption == 4) and "[ Unknown ]") or " Unknown " )
   printCentered( math.floor(h/2) + 3, "")
   printCentered( math.floor(h/2) + 4, ((nOption == 5) and "[ Page 2  ]") or " Page 2  " )
   printCentered( math.floor(h/2) + 5, ((nOption == 6) and "[  Back   ]") or "  Back   " )
end

drawMenu()
drawFrontend()

while true do
 local e,p = os.pullEvent()
 if e == "key" then
  local key = p
  if key == 17 or key == 200 then

   if nOption > 1 then
    nOption = nOption - 1
    drawMenu()
    drawFrontend()
   end
  elseif key == 31 or key == 208 then
  if nOption < 6 then
  nOption = nOption + 1
  drawMenu()
  drawFrontend()
end
elseif key == 28 then
  break
end
end
end
term.clear()

if nOption  == 1 then
shell.run("xos/.browser")
elseif nOption == 2 then
shell.run("xos/.reactor")
elseif nOption == 3 then
os.shutdown()
elseif nOption == 4 then
shell.run("xos/.UninstallDialog")
elseif nOption == 5 then
shell.run("xos/.programs2")
elseif nOption == 6 then
shell.run("back")
end