Universal Updater

client="Update Client"
server="Update Server"
self="Update Self"

clientsel="* Update Client *"
serversel="* Update Server *"
selfsel="* Update Self *"

uptx="Checking for update..."
futx="Found Update! Press Y to update or N to cancel"
lvtx="Script already at latest version!"
cutx="Updating..."
catx="Canceled!"
extxt=" Press Delete To Exit! "
cuctx="Updated!"

clgtx="Closing..."
cldtx="Closed."

clientcode="g7AmTvM8"
servercode="43NXRhFi"
selfcode="6UwqyDkP"

selected=1

shell.run("clear")
path = shell.resolve("")

screenx,screeny=term.getSize()

color = colors.red
incolor = colors.blue

function setPos(x,y)
  term.setCursorPos(x,y)
end

function drawBox(mask,xmin,ymin,xmax,ymax)
  if term.isColor() then
          term.setBackgroundColor(color)
      screenx,screeny=term.getSize()
      setPos(xmin,ymin)
      for i=1,(xmax+1)-xmin do
        write(" ")
        setPos((xmin-1)+i,ymax)
        write(" ")
        setPos(xmin+i,ymin)
      end
          term.setBackgroundColor(incolor)
          for i=2,ymax-1 do
          for j=1,(xmax+2)-xmin do
            setPos(xmin+j,(ymin-1)+i)
            write(" ")
          end
          end
          term.setBackgroundColor(color)
      for i=1,((ymax+1)-ymin)-2 do
        setPos(xmin,ymin+i)
        write(" ")
        setPos(xmax,ymin+i)
        write(" ")
      end
          term.setBackgroundColor(incolor)
  else
      screenx,screeny=term.getSize()
      setPos(xmin,ymin)
      for i=1,(xmax+1)-xmin do
        write(mask)
        setPos((xmin-1)+i,ymax)
        write(mask)
        setPos(xmin+i,ymin)
      end
      for i=1,((ymax+1)-ymin)-2 do
        setPos(xmin,ymin+i)
        write(mask)
        setPos(xmax,ymin+i)
        write(mask)
      end
  end
end

function draw()
  screenx,screeny=term.getSize()
  shell.run("clear")
  drawBox("#",1,1,screenx,screeny)
    if term.isColor() then
    term.setCursorPos(screenx-5,3)
    if term.isColor() then term.setBackgroundColor(colors.orange) end
    write("Exit")
    if term.isColor() then term.setBackgroundColor(incolor) end
    end
  if selected==1 then
    term.setCursorPos((screenx/2)-(string.len(clientsel)/2),screeny/3-2)
    write(clientsel)
    term.setCursorPos((screenx/2)-(string.len(server)/2),screeny/3*2-2)
    write(server)
    term.setCursorPos((screenx/2)-(string.len(self)/2),screeny/3*3-3)
    write(self)
  else if selected==2 then
    term.setCursorPos((screenx/2)-(string.len(client)/2),screeny/3-2)
    write(client)
    term.setCursorPos((screenx/2)-(string.len(serversel)/2),screeny/3*2-2)
    write(serversel)
    term.setCursorPos((screenx/2)-(string.len(self)/2),screeny/3*3-3)
    write(self)
  else if selected==3 then
    term.setCursorPos((screenx/2)-(string.len(client)/2),screeny/3-2)
    write(client)
    term.setCursorPos((screenx/2)-(string.len(server)/2),screeny/3*2-2)
    write(server)
    term.setCursorPos((screenx/2)-(string.len(selfsel)/2),screeny/3*3-3)
    write(selfsel)
  end
  end
  end
  if term.isColor() then
    term.setBackgroundColor(color)
  end
  term.setCursorPos((screenx/2)-(string.len(extxt)/2),screeny)
  write(extxt)
  if term.isColor() then
    term.setBackgroundColor(incolor)
  end
end

draw()

function checkForUpdate(pbcode,scname)
  atf=false
  if fs.exists(path.."/"..scname) then
    h=http.get("http://pastebin.com/raw.php?i="..pbcode)
    hsc=h.readAll()
    c=fs.open(path.."/"..scname,"r")
    csc=c.readAll()
    if hsc==csc then atf=false else atf=true end
    h.close()
    c.close()
    return atf
  else
    return true
  end
end

function updateclient()
  shell.run("clear")
drawBox("#",1,1,screenx,screeny)
  term.setCursorPos((screenx/2)-(string.len(uptx)/2),screeny/2)

  write(uptx)
  if checkForUpdate(clientcode,"chat") then
    shell.run("clear")
drawBox("#",1,1,screenx,screeny)
    term.setCursorPos((screenx/2)-(string.len(futx)/2)+1,screeny/2)

    write(futx)
    while slup==nil do
      e,par1=os.pullEvent()
      if e == "key" then
        if tostring(par1) == "21" then
          shell.run("clear")
drawBox("#",1,1,screenx,screeny)
          term.setCursorPos((screenx/2)-(string.len(cutx)/2),screeny/2)

          write(cutx)
  h=http.get("http://pastebin.com/raw.php?i=g7AmTvM8")
  hsc=h.readAll()
  c=fs.open(path.."/chat","w")
  c.write(hsc)
  h.close()
  c.close()
  shell.run("clear")
drawBox("#",1,1,screenx,screeny)
  term.setCursorPos((screenx/2)-(string.len(cuctx)/2),screeny/2)

  write(cuctx)
          sleep(2.5)
          return
        else if tostring(par1) == "49" then
          shell.run("clear")
drawBox("#",1,1,screenx,screeny)
          term.setCursorPos((screenx/2)-(string.len(catx)/2),screeny/2)

          write(catx)
          sleep(2.5)
          return
        end
      end
    end
    end
  else
    shell.run("clear")
drawBox("#",1,1,screenx,screeny)
    term.setCursorPos((screenx/2)-(string.len(lvtx)/2),screeny/2)

    write(lvtx)
    sleep(1.5)
  end
end

function updateserver()
  shell.run("clear")
drawBox("#",1,1,screenx,screeny)
  term.setCursorPos((screenx/2)-(string.len(uptx)/2),screeny/2)

  write(uptx)
  if checkForUpdate(servercode,"server") then
    shell.run("clear")
drawBox("#",1,1,screenx,screeny)
    term.setCursorPos((screenx/2)-(string.len(futx)/2)+1,screeny/2)

    write(futx)
    while slup==nil do
      e,par1=os.pullEvent()
      if e == "key" then
        if tostring(par1) == "21" then
          shell.run("clear")
drawBox("#",1,1,screenx,screeny)
          term.setCursorPos((screenx/2)-(string.len(cutx)/2),screeny/2)

          write(cutx)
  h=http.get("http://pastebin.com/raw.php?i=43NXRhFi")
  hsc=h.readAll()
  c=fs.open(path.."/server","w")
  c.write(hsc)
  h.close()
  c.close()
  shell.run("clear")
drawBox("#",1,1,screenx,screeny)
  term.setCursorPos((screenx/2)-(string.len(cuctx)/2),screeny/2)

  write(cuctx)
          sleep(2.5)
          return
        else if tostring(par1) == "49" then
          shell.run("clear")
drawBox("#",1,1,screenx,screeny)
          term.setCursorPos((screenx/2)-(string.len(catx)/2),screeny/2)

          write(catx)
          sleep(2.5)
          return
        end
      end
    end
    end
  else
    shell.run("clear")
drawBox("#",1,1,screenx,screeny)
    term.setCursorPos((screenx/2)-(string.len(lvtx)/2),screeny/2)

    write(lvtx)
    sleep(1.5)
  end
end

function updateself()
  shell.run("clear")
drawBox("#",1,1,screenx,screeny)
  term.setCursorPos((screenx/2)-(string.len(uptx)/2),screeny/2)

  write(uptx)
  if checkForUpdate(selfcode,"updater") then
    shell.run("clear")
drawBox("#",1,1,screenx,screeny)
    term.setCursorPos((screenx/2)-(string.len(futx)/2)+1,screeny/2)

    write(futx)
    while slup==nil do
      e,par1=os.pullEvent()
      if e == "key" then
        if tostring(par1) == "21" then
          shell.run("clear")
drawBox("#",1,1,screenx,screeny)
          term.setCursorPos((screenx/2)-(string.len(cutx)/2),screeny/2)

          write(cutx)
  h=http.get("http://pastebin.com/raw.php?i=6UwqyDkP")
  hsc=h.readAll()
  c=fs.open(path.."/updater","w")
  c.write(hsc)
  h.close()
  c.close()
  shell.run("clear")
drawBox("#",1,1,screenx,screeny)
  term.setCursorPos((screenx/2)-(string.len(cuctx)/2),screeny/2)

  write(cuctx)
          sleep(2.5)
          exitscr()
  sleep(2.5)
  term.setBackgroundColor(colors.black)
  shell.run("clear")
  error()

          return
        else if tostring(par1) == "49" then
          shell.run("clear")
drawBox("#",1,1,screenx,screeny)
          term.setCursorPos((screenx/2)-(string.len(catx)/2),screeny/2)

          write(catx)
          sleep(2.5)
          return
        end
      end
    end
    end
  else
    shell.run("clear")
drawBox("#",1,1,screenx,screeny)
    term.setCursorPos((screenx/2)-(string.len(lvtx)/2),screeny/2)

    write(lvtx)
    sleep(1.5)
  end
end

function exitscr()
  shell.run("clear")
drawBox("#",1,1,screenx,screeny)
  term.setCursorPos((screenx/2)-(string.len(clgtx)/2),screeny/2)

  write(clgtx)
  sleep(1.5)
  shell.run("clear")
drawBox("#",1,1,screenx,screeny)
  term.setCursorPos((screenx/2)-(string.len(cldtx)/2),screeny/2)

  write(cldtx)
  sleep(1.5)
  term.setBackgroundColor(colors.black)
  shell.run("clear")
  error()
end

while true do
  e,par1,par2,par3=os.pullEvent()
  if e=="key" then
  print(par1)
  if par1==nil then
    print("NIL")
  else if par1==205 or par1==208 then
    if selected==3 then
      selected=1
    else
      selected=selected+1
    end
  else if par1==200 or par1==203 then
    if selected==1 then
      selected=3
    else
      selected=selected-1
    end
  else if tostring(par1)=="28" then
    if selected==1 then
      updateclient()
    else if selected==2 then
      updateserver()
    else if selected==3 then
      updateself()
    end
    end
    end
    else if par1==211 then
      exitscr()
    end
    end
    end
  end
  draw()
  sleep(0.25)
  end
else if e=="mouse_click" then
  if par2 <= screenx-2 then
    if par2 >= screenx-5 then
      if par3 == 3 then
        exitscr()
      end
    end
  end
end
end
end