class ClassifiedListingsController < ApplicationController
  before_action :set_classified_listing, only: %i[edit update]
  before_action :set_cache_control_headers, only: %i[index]
  after_action :verify_authorized, only: %i[edit update]
  before_action :authenticate_user!, only: %i[edit update new]

  def index
    @displayed_classified_listing = ClassifiedListing.find_by!(slug: params[:slug]) if params[:slug]
    mod_page if params[:view] == "moderate"
    @classified_listings = if params[:category].blank?
                             ClassifiedListing.where(published: true).order("bumped_at DESC").limit(12)
                           else
                             []
                           end
    set_surrogate_key_header "classified-listings-#{params[:category]}"
  end

  def new
    @classified_listing = ClassifiedListing.new
    @credits = current_user.credits.where(spent: false)
  end

  def edit
    authorize @classified_listing
    @credits = current_user.credits.where(spent: false)
  end

  def create
    @classified_listing = ClassifiedListing.new(classified_listing_params)
    @classified_listing.user_id = current_user.id
    @number_of_credits_needed = ClassifiedListing.cost_by_category(@classified_listing.category)
    @org = Organization.find(current_user.organization_id) if @classified_listing.post_as_organization.to_i == 1
    available_org_credits = @org.credits.where(spent: false) if @org
    available_individual_credits = current_user.credits.where(spent: false)

    if @org && available_org_credits.size >= @number_of_credits_needed
      create_listing(available_org_credits)
    elsif available_individual_credits.size >= @number_of_credits_needed
      create_listing(available_individual_credits)
    else
      redirect_to "/credits"
    end
  end

  def create_listing(credits)
    @classified_listing.bumped_at = Time.current
    @classified_listing.published = true
    @classified_listing.organization_id = current_user.organization_id if @org
    if @classified_listing.save
      clear_listings_cache
      credits.limit(@number_of_credits_needed).update_all(spent: true)
      @classified_listing.index!
      redirect_to "/listings"
    else
      @credits = current_user.credits.where(spent: false)
      @classified_listing.cached_tag_list = classified_listing_params[:tag_list]
      render :new
    end
  end

  def update
    authorize @classified_listing
    available_credits = current_user.credits.where(spent: false)
    number_of_credits_needed = ClassifiedListing.cost_by_category(@classified_listing.category) # Bumping
    if params[:classified_listing][:action] == "bump"
      @classified_listing.bumped_at = Time.current
      if available_credits.size >= number_of_credits_needed
        @classified_listing.save
        available_credits.limit(number_of_credits_needed).update_all(spent: true)
      end
    elsif params[:classified_listing][:action] == "unpublish"
      @classified_listing.published = false
      @classified_listing.save
      @classified_listing.remove_from_index!
    elsif params[:classified_listing][:body_markdown].present? && @classified_listing.bumped_at > 24.hours.ago
      @classified_listing.title = params[:classified_listing][:title] if params[:classified_listing][:title]
      @classified_listing.body_markdown = params[:classified_listing][:body_markdown] if params[:classified_listing][:body_markdown]
      @classified_listing.tag_list = params[:classified_listing][:tag_list] if params[:classified_listing][:tag_list]
      @classified_listing.save
    end
    clear_listings_cache
    redirect_to "/listings"
  end

  private

  def mod_page
    redirect_to "/internal/listings/#{@displayed_classified_listing.id}/edit"
  end

  # Use callbacks to share common setup or constraints between actions.
  def set_classified_listing
    @classified_listing = ClassifiedListing.find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def classified_listing_params
    accessible = %i[title body_markdown category tag_list contact_via_connect post_as_organization action]
    params.require(:classified_listing).permit(accessible)
  end

  def clear_listings_cache
    CacheBuster.new.bust("/listings")
    CacheBuster.new.bust("/listings?i=i")
    CacheBuster.new.bust("/listings/#{@classified_listing.category}/#{@classified_listing.slug}")
    CacheBuster.new.bust("/listings/#{@classified_listing.category}/#{@classified_listing.slug}?i=i")
  end
end