local shell = require("shell")
local internet = require("internet")
local fs = require("filesystem")

local args = {...}

-- Split string based on delimiter
function split(s, sep)
  if sep == nil then
    sep = "%s"
  end
  
  local t = {}
  for str in string.gmatch(s, "([^"..sep.."]+)") do
    table.insert(t, str)
  end
  return t
end

-- Slice table
function slice(tbl, first, last, step)
  local sliced = {}

  for i = first or 1, last or #tbl, step or 1 do
    sliced[#sliced+1] = tbl[i]
  end

  return sliced
end

-- Error checking
if args[1] == nil then
  print("URL must exist")
  return
end
args[1] = "http://mc.bashed.rocks:13699/"..args[1]

-- Get local filename
local fileName = ""
if args[2] == nil then
  local t = split(args[1], "/")
  fileName = t[#t]
else
  fileName = args[2]
end
local newArgs = slice(args, 3, #args-2)

-- Sandbox so we don't write to the screen
sandbox_env = {
  assert = assert,
  require = require,
  pairs = pairs,
  pcall = pcall,
  tostring = tostring,
  string = string,
  io = {write = function(...) end, read = io.read, open = io.open, stderr = io.stderr}
}

pcall(fs.remove, fileName)
shell.execute("wget -f "..args[1].." "..fileName, sandbox_env)

-- Run downloaded file
local c = fileName
for _, i in ipairs(newArgs) do c = c.." "..i end
shell.execute(c)