# frozen_string_literal: true

module YiffRest
  module APIV2
    class ImagesController < ApplicationController
      before_action :validate_discord
      before_action :prepare_user
      before_action :admin_only
      before_action :load_image, only: %i[edit update destroy delete_with_reason toggle_viewable convert update_cache]

      def index
        @sp = search_images_params
        @pagy, @images = pagy(APIImage.search(@sp).order(created_at: :desc), size: [1, 2, 2, 1])
      end

      def new
        @image = APIImage.new(create_params)
        @categories = APIImage.categories
      end

      def new_external
        @categories = APIImage.categories
      end

      def edit
        @image = APIImage.find(params[:id])
        @categories = APIImage.categories
      end

      def create
        @service = APIImageUploadService.new(create_params)
        @image = @service.start!
        @categories = APIImage.categories
        if @image.invalid?
          flash.now[:alert] = @image.errors.full_messages.join(", ")
          return render(:new)
        end
        redirect_to(yiff_rest_api_v2_manage_images_path(search: { category: @image.category }), notice: "Image added")
      end

      def create_external
        pp = create_external_params
        @external = APIImage.create_external!(pp[:site], pp[:external_id], pp[:category])
        @image = @external.api_image
        redirect_to(yiff_rest_api_v2_manage_images_path(search: { category: @image.category }), notice: "Image added")
      end

      def update
        @image = APIImage.find(params[:id])
        @image.update(update_params)
        @categories = APIImage.categories
        if @image.invalid?
          flash.now[:alert] = @image.errors.full_messages.join(", ")
          return render(:edit)
        end
        redirect_to(yiff_rest_api_v2_manage_images_path(search: { category: @image.category }), notice: "Image updated")
      end

      def destroy
        @image = APIImage.find(params[:id])
        @image.deletion_reason = params.dig(:api_image, :deletion_reason)
        @image.destroy
        redirect_to(yiff_rest_api_v2_manage_images_path(search: { category: @image.category }), notice: "Image deleted")
      end

      def delete_with_reason
        # deletion_reason
        @image = APIImage.find(params[:id])
      end

      def toggle_viewable
        @image.update(is_viewable: !@image.is_viewable?)
        redirect_back(fallback_location: yiff_rest_api_v2_manage_images_path, notice: "Image is #{@image.is_viewable? ? 'now' : 'no longer'} visible.")
      end

      def convert
        return render_expected_error(400, "Image is already external") if @image.is_external?
        return if request.get?

        url = params.dig(:api_image, :external_url)
        @image.convert_to_external(url)
        redirect_to(yiff_rest_api_v2_manage_images_path(search: { id: @image.id }), notice: "Image converted")
      end

      def update_cache
        return render_expected_error(400, "Image is not external") unless @image.is_external?
        @image.external_api_image.update_cache
        redirect_back(fallback_location: yiff_rest_api_v2_manage_images_path, notice: "Cache will be updated soon")
      end

      def iqdb
      end

      def query_iqdb
        @sp = search_iqdb_params
        @sp[:image_id] ||= @sp[:md5]
        @sc = (@sp[:score_cutoff].presence || 60).to_i
        if @sp[:file].present?
          @results = Iqdb.query_file(@sp[:file].tempfile, @sc)
        elsif @sp[:url].present?
          @results = Iqdb.query_url(@sp[:url], @sc)
        elsif @sp[:image_id].present?
          @results = Iqdb.query_image(APIImage.find(@sp[:image_id]), @sc)
        end
        @results ||= []
        @pagy, @images = pagy_array(@results.pluck("image"), max_items: @results.length)
        render(:index)
      end

      def leaderboard
        @list = APIImage.all_seen.sort_by(&:second).reverse.to_h
        @keys = @list.map(&:first)
        @results = APIImage.where(id: @keys).sort_by { |img| @keys.index(img.md5) }
        @pagy, @images = pagy_array(@results, size: [1, 2, 2, 1])
        render(:index)
      end

      private

      def load_category
        @category = APIImage.categories.find { |c| c.db == params[:manage_id] }
        raise(ActiveRecord::RecordNotFound) if @category.blank?
      end

      def load_image
        @image = APIImage.find(params[:id])
      end

      def site_title
        "YiffyAPI V2 - Manage Images"
      end

      def search_images_params
        permit_search_params(%i[category md5 original_url artist viewable external])
      end

      def search_iqdb_params
        permit_search_params(%i[file url image_id md5 score_cutoff])
      end

      def create_params
        params.fetch(:api_image, {}).permit(:category, :original_url, :sources_string, :artists_string, :file)
      end

      def create_external_params
        params.fetch(:api_image, {}).permit(:site, :external_id, :category)
      end

      def update_params
        params.fetch(:api_image, {}).permit(:category, :sources_string, :artists_string)
      end
    end
  end
end