var fs = require('fs')
var path = require('path')

var mainPath = path.resolve(__dirname, 'index.js')
var mtime
var main
function loadMain() {
  var stats = fs.statSync(mainPath)
  var prevMtime = mtime
  mtime = stats.mtime.getTime()
  if (mtime !== prevMtime) {
    delete require.cache[mainPath]
    main = require(mainPath)
    var k
    if (main.manifest && exports.manifest) {
      for (k in main.manifest) exports.manifest[k] = main.manifest[k]
    }
    for (k in main) exports[k] = main[k]
    return true
  }
}
loadMain()

exports.init = function (sbot, config) {
  var api
  var wsUseHandler
  var wsUse = sbot.ws && sbot.ws.use
  if (wsUse) sbot.ws.use = function (handler) {
    if (!wsUseHandler) wsUseHandler = handler
    else wsUse.call(sbot.ws, handler)
  }

  function loadApi() {
    if (loadMain() || !api) {
      var prevApi = api
      var init = typeof main === 'function' ? main : main.init
      wsUseHandler = null
      api = init.call(main, sbot, config)
    }
  }

  if (wsUse) wsUse(function (req, res, next) {
    loadApi()
    if (wsUseHandler) wsUseHandler(req, res, next)
    else if (next) next()
  })

  loadApi()
  var wrappedApi = {}
  function wrapMethod(method) {
    return function () {
      loadApi()
      return api[method].apply(api, arguments)
    }
  }
  for (var method in main.manifest || api) {
    wrappedApi[method] = wrapMethod(method)
  }
  return wrappedApi
}