import Ember from 'ember'

export default Ember.Mixin.create
  get_active_workflow_groups: (workflow_groups, project_scenarios, set_operation = 'union')->
    project_scenarios = Ember.makeArray(project_scenarios)
    workflow_groups = workflow_groups.toArray()
    # initialize unused working workflow-groups
    if project_scenarios.length
      if set_operation is 'intersection'
        @get_active_workflow_groups_using_intersection(workflow_groups, project_scenarios)
      else
        @get_active_workflow_groups_using_union(project_scenarios)
    else
      workflow_groups

      #@set 'active_workflow_groups', workflow_groups || []
      #@set 'active_workflow_group_ids', @get('active_workflow_groups').mapBy('id').toArray()

  get_active_workflow_groups_using_union: (project_scenarios) ->
    selected_project_scenario_workflow_group_ids = []
    working_workflow_groups = []
    project_scenarios.forEach (selected_project_scenario) ->
      selected_project_scenario.get('workflow_groups').forEach (workflow_group) ->
        if selected_project_scenario_workflow_group_ids.indexOf(workflow_group.get('id')) < 0
          selected_project_scenario_workflow_group_ids.push workflow_group.get('id')
          working_workflow_groups.push workflow_group
    #working_workflow_groups = working_workflow_groups
    #@set 'active_workflow_groups', working_workflow_groups
    #@set 'active_workflow_group_ids', selected_project_scenario_workflow_group_ids
    working_workflow_groups

  get_active_workflow_groups_using_intersection: (workflow_groups, project_scenarios) ->
    selected_project_scenario_workflow_group_ids = []
    first_run = true
    project_scenarios.forEach (selected_project_scenario) ->
      current_workflow_group_ids = selected_project_scenario.get('workflow_groups').mapBy('id').toArray()
      if first_run
        selected_project_scenario_workflow_group_ids =  current_workflow_group_ids
        first_run = false
        return
      selected_project_scenario_workflow_group_ids = selected_project_scenario_workflow_group_ids.filter (id) -> id in current_workflow_group_ids

    #@set 'active_workflow_group_ids', selected_project_scenario_workflow_group_ids
    #@set 'active_workflow_groups', workflow_groups.filter((r) -> r.get('id') in selected_project_scenario_workflow_group_ids)
    workflow_groups.filter((r) -> r.get('id') in selected_project_scenario_workflow_group_ids)