local function printUsage()
    print( "Usages:" )
    print( "vortex get <code> <filename>" )
end

local tArgs = { ... }
if #tArgs < 2 then
    printUsage()
    return
end

if not http then
    print( "vortex requires http API" )
    print( "Set enableAPI_http to 1 in mod_ComputerCraft.cfg" )
    return
end

local sCommand = tArgs[1]
if sCommand == "get" then
    -- Download a file from vortex
    if #tArgs < 3 then
        printUsage()
        return
    end

    -- Determine file to download
    local sCode = tArgs[2]
    local sFile = tArgs[3]
    local sPath = shell.resolve( sFile )
    if fs.exists( sPath ) then
        print( "File already exists" )
        return
    end

    -- GET the contents from vortex
    write( "Connecting to vortex... " )
    http.request("https://vortexcdn.64i.de/"..textutils.urlEncode( sCode ))

    event, url, response = os.pullEvent()
    if (event == "http_success") then
        print( "Success." )

        local sResponse = response.readAll()
        response.close()

        local file = fs.open( sPath, "w" )
        file.write( sResponse )
        file.close()

        print( "Downloaded as "..sFile )

    else
        print( "Failed." )
    end

else
    printUsage()
    return
end