scinote-web/app/services/client_api/teams_service.rb

module ClientApi
  class TeamsService
    def initialize(arg)
      team_id = arg.fetch(:team_id) { raise ClientApi::CustomTeamError }
      @team = Team.find_by_id(team_id)
      @user = arg.fetch(:current_user) { raise ClientApi::CustomTeamError }
      raise ClientApi::CustomTeamError unless @user.teams.include? @team
    end

    def change_current_team!
      @user.update_attribute(:current_team_id, @team.id)
    end

    def team_page_details_data
      team_users = UserTeam.includes(:user)
                           .references(:user)
                           .where(team: @team)
                           .distinct
      { team: @team, team_users: team_users }
    end

    def teams_data
      { teams: @user.teams_data }
    end
  end
  CustomTeamError = Class.new(StandardError)
end