local function get(id, file)
    local handle, message
    print("Connecting to GitHub...")
    if file then
        handle, message = http.get("https://gist.githubusercontent.com/steamp0rt/" .. id .. "/raw/" .. file)
    else
        handle, message = http.get("https://gist.githubusercontent.com/steamp0rt/" .. id .. "/raw/")
    end

    if not handle then error(message or "Unknown error", 0) end

    local contents = handle.readAll()
    handle.close()

    return contents
end

local command = ...
if command == "get" then
    local _, id, dest = ...
    if not id then error("No id specified", 0) end

    local mainId, file = id:match("^([^/]+)/(.+)$")
    dest = dest or file
    if not dest then error("No destination specified", 0) end

    local contents = get(mainId or id, file)
    local path = shell.resolve(dest)

    local handle = fs.open(path, "w")
    if not handle then error("Cannot open " .. dest) end
    handle.write(contents)
    handle.close()
elseif command == "run" then
    local _, id = ...
    if not id then error("No id specified", 0) end

    local mainId, file = id:match("^([^/]+)/(.+)$")
    local contents = get(mainId or id, file)

    local func, msg = load(contents, file or id, nil, _ENV)
    if not func then error(msg, 0) end

    func(select(3, ...))
elseif not command then
    error("Must specify command", 0)
else
    error("No such command: " .. command, 0)
end