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

module ClientApi
  class UserTeamService
    include NotificationsHelper
    include InputSanitizeHelper

    def initialize(arg)
      parsed_args = validate_params(args)
      @team = Team.find_by_id(parsed_args.fetch(:team_id))
      @user = parsed_args.fetch(:user)
      @user_team = UserTeam.find_by_id(parsed_args.fetch(:user_team_id))
      raise ClientApi::CustomUserTeamError unless @user_team.team == @team
    end

    def destroy_user_team_and_assign_new_team_owner!
      raise ClientApi::CustomUserTeamError unless user_cant_leave?
      new_owner = @team.user_teams
                       .where(role: 2)
                       .where.not(id: @user_team.id)
                       .first.user
      new_owner ||= @user
      reset_user_current_team(@user_team)
      @user_team.destroy(new_owner)
      generate_new_notification
    end

    def teams_data
      {
        teams: @user.teams_data,
        flash_message: t('client_api.user_teams.leave_flash', team: @team.name)
      }
    end
    private

    def reset_user_current_team(user_team)
      ids = user_team.user.teams_ids
      ids -= [user_team.team.id]
      user_team.user.current_team_id = ids.first
      user_team.user.save
    end

    def user_cant_leave?
     @user_team.admin? && @team.user_teams.where(role: 2).count <= 1
    end

    def generate_new_notification
      user = @user_team.user
      generate_notification(user,
                            user,
                            @user_team.team,
                            false,
                            false)
    end

    def validate_params(args)
      team_id = args.fetch(:team_id) { raise ClientApi::CustomUserTeamError }
      user_team_id = args.fetch(:user_team_id) { raise ClientApi::CustomUserTeamError }
      user = args.fetch(:user) { raise ClientApi::CustomUserTeamError }
      {user: user, user_team_id: user_team_id, team_id: team_id }
    end
  end
  CustomUserTeamError = Class.new(StandardError)
end