class Projects::AutocompleteSourcesController < Projects::ApplicationController
  before_action :load_autocomplete_service, except: [:members]

  def members
    render json: ::Projects::ParticipantsService.new(@project, current_user).execute(target)
  end

  def issues
    render json: @autocomplete_service.issues
  end

  def merge_requests
    render json: @autocomplete_service.merge_requests
  end

  def labels
    render json: @autocomplete_service.labels(target)
  end

  def milestones
    render json: @autocomplete_service.milestones
  end

  def commands
    render json: @autocomplete_service.commands(target, params[:type])
  end

  private

  def load_autocomplete_service
    @autocomplete_service = ::Projects::AutocompleteService.new(@project, current_user)
  end

  def target
    case params[:type]&.downcase
    when 'issue'
      IssuesFinder.new(current_user, project_id: @project.id).find_by(iid: params[:type_id])
    when 'mergerequest'
      MergeRequestsFinder.new(current_user, project_id: @project.id).find_by(iid: params[:type_id])
    when 'commit'
      @project.commit(params[:type_id])
    end
  end
end