davidesantangelo/feedi

# frozen_string_literal: true

class SearchController < BaseController
  # callbacks
  before_action :check_params
  skip_before_action :require_authentication, only: [:entries]

  def entries
    boost_by_recency = { created_at: { scale: '4d', decay: 0.5 } }
    fields = ['title^8', 'body^3', 'url^4', 'categories']

    entries = Entry.pagy_search(params[:q], where: build_filters, boost_by_recency: boost_by_recency, order: build_order, fields: fields).results
    @pagy, @entries = pagy_searchkick(entries)

    json_response_with_serializer(@entries, Serializer::ENTRY)
  rescue StandardError => e
    Rails.logger.error(e)
    json_error_response('SearchEntriesError', e.message, 500)
  end

  def feeds
    fields = ['title^8', 'description', 'url^4']

    feeds = Feed.pagy_search(params[:q], boost_by: %i[entries_count rank], fields: fields).results
    @pagy, @feeds = pagy_searchkick(feeds)

    json_response_with_serializer(@feeds, Serializer::FEED)
  rescue StandardError => e
    Rails.logger.error(e)
    json_error_response('SearchFeedsError', e.message, 500)
  end

  private

  def build_order
    order = {}

    order[:published_at] = entries_params[:order] if entries_params[:order].present?

    order
  end

  def build_filters
    filters = {}

    range = {}

    range[:gte] = Time.parse(entries_params[:from]) if entries_params[:from].present?
    range[:lte] = Time.parse(entries_params[:to]) if entries_params[:to].present?

    filters[:feed_id] = entries_params[:feed_id] if entries_params[:feed_id].present?
    filters[:published_at] = range

    filters
  end

  def entries_params
    params.permit(:q, :from, :to, :feed_id, :order)
  end

  def check_params
    unless entries_params[:q].present?
      json_error_response('Validation Failed', 'missing q param', :unprocessable_entity)
      return
    end

    if entries_params[:order].present? && !%w[asc desc].include?(entries_params[:order])
      json_error_response('Validation Failed', 'order param must be asc/desc', :unprocessable_entity)
    end
  end
end