webdriver = require 'selenium-webdriver'

expect = require('./helpers/expect')()

Page = require './helpers/page'

_ = require 'lodash'


class CollectionListPage extends Page
  constructor: ->
    # Call the Page superclass initializer with the helpShown
    # flag set to true, since the help box is displayed on
    # this landing page.
    super('/quip?project=QIN_Test',  true)

  # @returns the collection {name, description, url} object
  #   array promise
  collections: ->
    @findAll(By.repeater('collection in collections'), 'li')
      .then (rows) =>
        rows.map (row) =>
          @_parse_row(row)
      .then (rows) =>
         webdriver.promise.all(rows)

  # @returns the collection {name, description, url} promise
  _parse_row: (row) ->
    # The detail hyperlink.
    nameEltFinder = row.find(By.binding('collection.name'))
    detailFinder = nameEltFinder.then (elt) ->
      if elt then elt.getAttribute('href') else null
    nameFinder = nameEltFinder.then (elt) -> elt.text()
    descFinder = row.text(By.binding('collection.description'))
    infoFinder = row.find('button')
    finders = [detailFinder, nameFinder, descFinder, infoFinder]
    webdriver.promise.all(finders).then (resolved) ->
      [detail, name, desc, info] = resolved
      {name: name, description: desc, info: info, detail: detail}


describe 'E2E Testing Collection List', ->
  page = null

  before ->
    page = new CollectionListPage

  it 'should load the page', ->
    expect(page.content, 'The page was not loaded')
      .to.eventually.exist
  
  # Note - it would be nice to test whether a trailing slash
  # resolves to the same page, but the many attempts to build
  # such a test case were unsuccessful. Test manually instead.

  # The page header test cases.
  describe 'Header', ->
    it 'should display the billboard', ->
      expect(page.billboard, 'The billboard is incorrect')
        .to.eventually.equal('Collections')

    it 'should have a home button', ->
      expect(page.home, 'The home URL is incorrect')
        .to.eventually.match(Page.HOME_URL_PAT)

    describe 'Help', ->
      help = null
    
      before ->
        help = page.help

      it 'should have help text', ->
        expect(help, 'The help text is missing')
          .to.eventually.exist.and.not.be.empty

      it 'should display a {qu,sugg}estion box hyperlink', ->
        expect(help, 'The {qu,sugg}estion box hyperlink is missing')
          .to.eventually.include(Page.SUGGESTION_BOX_URL)

  describe 'Collections', ->
    collectionsFinder = null

    before ->
      collectionsFinder = page.collections()

    it 'should display the Breast and Sarcoma collections', ->
      names = collectionsFinder.then (collections) ->
        _.map(collections, 'name')
      # The collections are sorted. The comparison is the Chai
      # deep equals operator eql rather than equal.
      expect(names, 'The collection names are incorrect')
        .to.eventually.eql(['Breast', 'Sarcoma'])

    it 'should have an info button', ->
      collectionsFinder.then (collections) ->
        for coll in collections
          expect(coll.info, "The #{ coll.name } collection is" +
                            " missing an info button")
            .to.exist

    it 'should link to the collection detail', ->
      collectionsFinder.then (collections) ->
        for coll in collections
          expect(coll.detail, "The #{ coll.name } collection is" +
                            " missing a detail hyperlink")
            .to.exist
          # The collection detail URL is .../quip/<collection name>/....
          regex = /.*\/quip\/(\w+)/
          match = regex.exec(coll.detail)
          expect(match, "The #{ coll.name } collection detail" +
                            " hyperlink is malformed: #{ coll.detail }")
            .to.exist
          expect(match[1], "The #{ coll.name } collection detail" +
                         " hyperlink is incorrect: #{ coll.detail }")
            .to.equal(coll.name.toLowerCase())