# frozen_string_literal: true

class ExperimentMember
  include ActiveModel::Model

  attr_accessor :user_id, :user_role_id
  attr_reader :current_user, :experiment,
              :user, :project, :user_role,
              :user_assignment

  def initialize(current_user, experiment, project, user = nil, user_assignment = nil)
    @experiment = experiment
    @current_user = current_user
    @project = project
    @user_assignment = user_assignment

    if user
      @user = user
      @user_role = UserAssignment.find_by(assignable: experiment, user: user)&.user_role
    end
  end

  def update(params)
    prepare_data(params)

    ActiveRecord::Base.transaction do
      user_assignment.update!(user_role: user_role, assigned: :manually)
      log_change_activity
    end

    UserAssignments::PropagateAssignmentJob.perform_later(
      @experiment,
      @user,
      user_role,
      current_user
    )
  end

  def reset(params)
    ActiveRecord::Base.transaction do
      prepare_data(params)

      @user_role =
        @experiment.project
                   .user_assignments
                   .find_by(user: user_assignment.user)
                   .user_role

      user_assignment.update!(user_role: @user_role, assigned: :automatically)

      UserAssignments::PropagateAssignmentJob.perform_later(
        @experiment,
        @user,
        user_role,
        current_user
      )

      log_change_activity
    end
  end

  private

  def prepare_data(params)
    self.user_role_id = params[:user_role_id]
    self.user_id = params[:user_id]

    @user = @project.users.find(user_id)
    @user_role = UserRole.find_by(id: user_role_id)
    @user_assignment ||= UserAssignment.find_by(assignable: experiment, user: user)
  end

  def log_change_activity
    Activities::CreateActivityService.call(
      activity_type: :change_user_role_on_experiment,
      owner: current_user,
      subject: experiment,
      team: project.team,
      project: project,
      message_items: {
        experiment: experiment.id,
        user_target: user.id,
        role: user_role.name
      }
    )
  end
end