codecombat/app/views/play/ladder/play_modal.coffee

View = require 'views/kinds/ModalView'
template = require 'templates/play/ladder/play_modal'
ThangType = require 'models/ThangType'
{me} = require 'lib/auth'
LeaderboardCollection = require 'collections/LeaderboardCollection'

module.exports = class LadderPlayModal extends View
  id: "ladder-play-modal"
  template: template
  closeButton: true
  startsLoading = true

  constructor: (options, @level, @session, @team) ->
    super(options)
    @nameMap = {}
    @otherTeam = if team is 'ogres' then 'humans' else 'ogres'
    @startLoadingChallengersMaybe()
    @wizardType = ThangType.wizardType
    
  # PART 1: Load challengers from the db unless some are in the matches

  startLoadingChallengersMaybe: ->
    matches = @session?.get('matches')
    if matches?.length then @loadNames() else @loadChallengers()

  loadChallengers: ->
    @challengers = new ChallengersData(@level, @team, @otherTeam, @session)
    @challengers.on 'sync', @loadNames, @

  # PART 2: Loading the names of the other users

  loadNames: ->
    @challengers = @getChallengers()
    ids = (challenger.opponentID for challenger in _.values @challengers)

    success = (@nameMap) =>
      for challenger in _.values(@challengers)
        challenger.opponentName = @nameMap[challenger.opponentID] or 'Anoner'
      @checkWizardLoaded()

    $.ajax('/db/user/-/names', {
      data: {ids: ids}
      type: 'POST'
      success: success
    })
    
  # PART 3: Make sure wizard is loaded
  
  checkWizardLoaded: ->
    if @wizardType.loaded then @finishRendering() else @wizardType.once 'sync', @finishRendering, @
    
  # PART 4: Render

  finishRendering: ->
    @startsLoading = false
    @render()

  getRenderData: ->
    ctx = super()
    ctx.level = @level
    ctx.levelID = @level.get('slug') or @level.id
    ctx.teamName = _.string.titleize @team
    ctx.teamID = @team
    ctx.otherTeamID = @otherTeam
    ctx.challengers = if not @startsLoading then @challengers else {}
    ctx.portraitSRC = @wizardType.getPortraitSource()
    ctx.myName = me.get('name') || 'Newcomer'
    ctx
    
  # Choosing challengers

  getChallengers: ->
    # make an object of challengers to everything needed to link to them
    challengers = {}
    if @challengers
      easyInfo = @challengeInfoFromSession(@challengers.easyPlayer.models[0])
      mediumInfo = @challengeInfoFromSession(@challengers.mediumPlayer.models[0])
      hardInfo = @challengeInfoFromSession(@challengers.hardPlayer.models[0])
    else
      matches = @session.get('matches')
      won = (m for m in matches when m.metrics.rank < m.opponents[0].metrics.rank)
      lost = (m for m in matches when m.metrics.rank > m.opponents[0].metrics.rank)
      tied = (m for m in matches when m.metrics.rank is m.opponents[0].metrics.rank)
      easyInfo = @challengeInfoFromMatches(won)
      mediumInfo = @challengeInfoFromMatches(tied)
      hardInfo = @challengeInfoFromMatches(lost)
    @addChallenger easyInfo, challengers, 'easy'
    @addChallenger mediumInfo, challengers, 'medium'
    @addChallenger hardInfo, challengers, 'hard'
    challengers

  addChallenger: (info, challengers, title) ->
    # check for duplicates first
    return unless info
    for key, value of challengers
      return if value.sessionID is info.sessionID
    challengers[title] = info

  challengeInfoFromSession: (session) ->
    # given a model from the db, return info needed for a link to the match
    return unless session
    return {
      sessionID: session.id
      opponentID: session.get('creator')
    }

  challengeInfoFromMatches: (matches) ->
    return unless matches?.length
    match = _.sample matches
    opponent = match.opponents[0]
    return {
      sessionID: opponent.sessionID
      opponentID: opponent.userID
    }


class ChallengersData
  constructor: (@level, @team, @otherTeam, @session) ->
    _.extend @, Backbone.Events
    score = @session?.get('totalScore') or 25
    @easyPlayer = new LeaderboardCollection(@level, {order:1, scoreOffset: score - 5, limit: 1, team: @otherTeam})
    @easyPlayer.fetch()
    @easyPlayer.once 'sync', @challengerLoaded, @
    @mediumPlayer = new LeaderboardCollection(@level, {order:1, scoreOffset: score, limit: 1, team: @otherTeam})
    @mediumPlayer.fetch()
    @mediumPlayer.once 'sync', @challengerLoaded, @
    @hardPlayer = new LeaderboardCollection(@level, {order:-1, scoreOffset: score + 5, limit: 1, team: @otherTeam})
    @hardPlayer.fetch()
    @hardPlayer.once 'sync', @challengerLoaded, @
    console.log 'fetching challengers yes'

  challengerLoaded: ->
    console.log 'challenger loaded'
    if @allLoaded()
      @loaded = true
      @trigger 'sync'

  playerIDs: ->
    collections = [@easyPlayer, @mediumPlayer, @hardPlayer]
    (c.models[0].get('creator') for c in collections when c?.models[0])

  allLoaded: ->
    _.all [@easyPlayer.loaded, @mediumPlayer.loaded, @hardPlayer.loaded]