class OverlaysController < ApplicationController
  before_action :set_overlay, only: [ :destroy ]
  before_action :set_server_template, only: [ :create ]

  def index
    @system_overlays = Overlay.system_overlays
    @custom_overlays = current_user.overlays.custom_overlays.order(:name)
  end

  def create
    @server_template = current_user.server_templates.find(params[:server_template_id])
    @overlay = Overlay.find(params[:overlay_id])

    position = @server_template.template_overlays.maximum(:position).to_i + 1
    @template_overlay = @server_template.template_overlays.build(overlay_id: @overlay.id, position: position)

    if @template_overlay.save
      Activity.log(current_user, "added_overlay", "ServerTemplate", @server_template.id, { overlay: @overlay.name })
      redirect_to @server_template, notice: "Overlay added successfully!"
    else
      redirect_to @server_template, alert: "Failed to add overlay"
    end
  end

  def destroy
    authorize_user!
    server_template = @overlay.server_templates.find(params[:server_template_id])
    @overlay.template_overlays.where(server_template_id: server_template.id).destroy_all
    Activity.log(current_user, "removed_overlay", "ServerTemplate", server_template.id, { overlay: @overlay.name })
    redirect_to server_template, notice: "Overlay removed successfully!"
  end

  private

  def set_overlay
    @overlay = Overlay.find(params[:id])
  end

  def set_server_template
    @server_template = current_user.server_templates.find(params[:server_template_id])
  end

  def authorize_user!
    redirect_to dashboard_path, alert: "Not authorized" unless @overlay.user_id.nil? || @overlay.user_id == current_user.id
  end
end