discourse-ai/app/controllers/discourse_ai/embeddings/embeddings_controller.rb

# frozen_string_literal: true

module DiscourseAi
  module Embeddings
    class EmbeddingsController < ::ApplicationController
      requires_plugin ::DiscourseAi::PLUGIN_NAME

      SEMANTIC_SEARCH_TYPE = "semantic_search"

      def search
        query = params[:q].to_s

        if query.length < SiteSetting.min_search_term_length
          raise Discourse::InvalidParameters.new(:q)
        end

        grouped_results =
          Search::GroupedSearchResults.new(
            type_filter: SEMANTIC_SEARCH_TYPE,
            term: query,
            search_context: guardian,
            use_pg_headlines_for_excerpt: false,
          )

        semantic_search = DiscourseAi::Embeddings::SemanticSearch.new(guardian)

        if !semantic_search.cached_query?(query)
          RateLimiter.new(current_user, "semantic-search", 4, 1.minutes).performed!
        end

        hijack do
          semantic_search
            .search_for_topics(query)
            .each { |topic_post| grouped_results.add(topic_post) }

          render_serialized(grouped_results, GroupedSearchResultSerializer, result: grouped_results)
        end
      end
    end
  end
end