local skynet = require "skynet"
require "skynet.manager"
local c = require "snowflake.core"
local skynet_retpack = skynet.retpack

local prefix = nil
local MAX_WORKID_VAL = 1024
local CMD = {}
function CMD.start()
  local work_id = assert(option.sid)
  if work_id < 1 or work_id > 65535 then
    assert(false, "Work id is in range of 1 - 65535.")
  end

  prefix = string.format("%02d-", work_id>>10)
  work_id = work_id % MAX_WORKID_VAL
  c.init(work_id)
end

function CMD.prefix()
  return prefix
end

skynet.init(function()
  skynet.register(".snowflake")
end)

skynet.start(function()
  skynet.dispatch("lua", function(session, _, cmd, ...)
    local f = assert(CMD[cmd])
    if session == 0 then
      f(...)
    else
      skynet_retpack(f(...))
    end
  end)
end)