Pastebin downloader

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 pastebin ()
        local f=fs.open("system/.core/colors","r")
        local cnt=f.readAll()
        f.close()
        local nastaveni=textutils.unserialize(cnt)
local nastaveni=textutils.unserialize(cnt)
term.setBackgroundColor(colors.white)
term.clear ()
term.setBackgroundColor(nastaveni.barva)
term.setCursorPos(1,1)
print "                                                   "
term.setTextColor(colors.white)
prc ("Pastebin Manager", 1)
term.setTextColor(colors.black)
term.setBackgroundColor(colors.lightBlue)
term.setCursorPos(5,4)
print "- Run "
term.setCursorPos(5,6)
print "- Get "
term.setCursorPos(5,8)
print "- Put "
term.setBackgroundColor(colors.red)
term.setCursorPos(51, 1)
print " "
term.setTextColor(colors.white)
term.setCursorPos(51, 1)
print "*"
term.setTextColor(colors.black)
term.setBackgroundColor(colors.white)

while true do
local event, button, x, y = os.pullEventRaw()
if event == "mouse_click" then
if x >= 5 and x <= 10 and y == 4 and button == 1 then
spustit ()
elseif x >= 5 and x <= 10 and y == 6 and button == 1 then
ulozit ()
elseif x >= 5 and x <= 10 and y == 8 and button == 1 then
nahrat ()
elseif x == 51 and y == 1 and button == 1 then
plocha ()
end
end
end
end

function spustit ()
term.setCursorPos(4,12)
print "enter the code"
term.setCursorPos(4,13)
term.setBackgroundColor(colors.lightBlue)
print "          "
term.setCursorPos(4,13)
kod1 = io.read ()
if kod1 == "" then
pastebin ()
else
shell.run ("pastebin run",kod1)
plocha ()
end

while true do
if x == 51 and y == 1 and button == 1 then
plocha ()
end
end
end

function ulozit ()
term.setCursorPos(4,12)
print "enter the code"
term.setCursorPos(4,13)
term.setBackgroundColor(colors.lightBlue)
print "          "
term.setCursorPos(4,13)
kod1 = io.read ()
if kod1 == "" then
pastebin ()
else
term.setBackgroundColor(colors.white)
term.setCursorPos(4,12)
print "Name:  |Path: /system/downloads/.."
print "                                     "
end
term.setCursorPos(4,13)
term.setBackgroundColor(colors.lightBlue)
print "          "
term.setCursorPos(4,13)
kod2 = io.read ()
if kod2 == "" then
pastebin ()
else
shell.run ("pastebin get",kod1,"/system/downloads/"..kod2)
prohlizec ()
end
while true do
if x == 51 and y == 1 and button == 1 then
plocha ()
end
end
end

function nahrat ()
term.setCursorPos(4,12)
print "enter the path"
term.setCursorPos(4,13)
term.setBackgroundColor(colors.lightBlue)
print "          "
term.setCursorPos(4,13)
kod1 = io.read ()
if kod1 == "" then
pastebin ()
else
shell.run ("pastebin put",kod1)
end
pokr = io.read ()
if pokr == "" then
plocha ()
else
plocha ()
end
while true do
if x == 51 and y == 1 and button == 1 then
plocha ()
end
end
end

function plocha ()
shell.run ("/system/desktop")
end

pastebin ()