utils = require '../lib/utils'
validUrl = require 'valid-url'

describe "utils", ->
  credentials = null

  beforeEach ->
    credentials =
      awsTag: 'FAKE_AWS_TAG'
      awsId: 'FAKE_AWS_ID'
      awsSecret: 'FAKE_AWS_SECRET'

  describe 'formatQueryParams(query, method, credentials)', ->
    it 'should return an object', ->
      query =
        artist: 'Muse'
        searchIndex: 'Music'
        responseGroup: 'Small,Offers,Images,ItemAttributes'
      queryParams = utils.formatQueryParams query, 'ItemSearch', credentials

      queryParams.should.be.an.Object

    describe 'ItemSearch', ->
      it 'should use default values and constants', ->
        queryParams = utils.formatQueryParams({}, 'ItemSearch', credentials)

        queryParams.should.have.property('Condition', 'All');
        queryParams.should.have.property('Keywords', '');
        queryParams.should.have.property('ResponseGroup', 'ItemAttributes');
        queryParams.should.have.property('SearchIndex', 'All');
        queryParams.should.have.property('ItemPage', '1');
        queryParams.should.have.property('Version', '2013-08-01');

    describe 'ItemLookup', ->
      it 'should use default values and constants', ->
        queryParams = utils.formatQueryParams({}, 'ItemLookup', credentials)

        queryParams.should.have.property('Condition', 'All');
        queryParams.should.have.property('IdType', 'ASIN');
        queryParams.should.have.property('IncludeReviewsSummary', 'True');
        queryParams.should.have.property('ResponseGroup', 'ItemAttributes');
        queryParams.should.have.property('TruncateReviewsAt', '1000');
        queryParams.should.have.property('VariationPage', 'All');
        queryParams.should.have.property('Version', '2013-08-01');

    describe 'BrowseNodeLookup', ->
      it 'should use default values and constants', ->
        queryParams = utils.formatQueryParams({}, 'BrowseNodeLookup', credentials)

        queryParams.should.have.property('ResponseGroup', 'BrowseNodeInfo');
        queryParams.should.have.property('Version', '2013-08-01');


  describe 'generateQueryString(query, method, credentials)', ->
    queryString = null

    beforeEach ->
      query =
        keywords: 'Game of Thrones'
        searchIndex: 'DVD'
        responseGroup: 'Images,ItemAttributes'
      queryString = utils.generateQueryString query, 'ItemSearch', credentials

    it 'should return a string', ->
      queryString.should.be.a.String

    it 'should be a valid url', ->
      (validUrl.isHttpsUri(queryString)).should.be.a.String

    it 'should include a valid timestamp', ->
      queryString.should.match /&Timestamp=([\+-]?\d{4}(?!\d{2}\b))((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])((:?)[0-5]\d)?|24\:?00)([\.,]\d+(?!:))?)?(\17[0-5]\d([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?/

    it 'should include keywords', ->
      unescapedKeywords = /&Keywords=(.+?)&/.exec queryString
      keywords = decodeURIComponent unescapedKeywords[1]
      keywords.should.equal 'Game of Thrones'

    it 'should be signed', ->
      signature = decodeURIComponent((/&Signature=(.+)$/.exec queryString)[1])
      signature.should.match /[A-Fa-f0-9]*=$/