request = require 'request'
sha1    = require 'js-sha1'

urlEncode = (value) ->
  encodeURIComponent(value).replace(/%20/g, '+').replace(/[!'()]/g, escape).replace(/\*/g, "%2A") 

sortKeys = (params) ->
  keys = [];
  for own propName of params
    keys.push(propName)

  keys.sort()

buildBaseString = (params) ->
  keysSorted = sortKeys params
  baseString = ""
  for key in keysSorted
    propVal = params[key]
    baseString += urlEncode(key) + "=" + urlEncode(propVal) + "&"

    #console.log(propName + "=" + query[propName])

  console.log("baseString=[" + baseString.slice(0, -1) + "]")
  
  baseString.slice(0, -1)

calculateChecksum = (api, baseString, sharedSecret) ->
  qStr = api + baseString + sharedSecret
  console.log("[" + qStr + "]")
  sha1(qStr)

create = (params, bbb, options, callback) ->
  baseStr = buildBaseString(params)

  checksum = calculateChecksum("create", baseStr, bbb.secret)
  queryStr = baseStr + "&checksum=" + checksum
  console.log(queryStr)

  reqStr = bbb.server + "create?" + queryStr
  console.log(reqStr)

  request(reqStr, (error, response, body) ->
    callback error, response, body 
  )

join = (params, bbb, options, callback) ->
  baseStr = buildBaseString(params)

  checksum = calculateChecksum("join", baseStr, bbb.secret)
  queryStr = baseStr + "&checksum=" + checksum
  console.log(queryStr)

  reqStr = bbb.server + "join?" + queryStr
  console.log(reqStr)

  request(reqStr, (error, response, body) ->
    callback error, response, body 
  )

exports.create = create
exports.join = join