# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
# Departamento de Informatica - Universidade Federal do Parana
#
# This file is part of portalmec.
#
# portalmec is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# portalmec is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.

include TagSearchService

class V1::SearchController < ApplicationController
  include ::Paginator
  before_action :set_search, except: [:tag]

  # GET v1/search
  # GET v1/search.json
  def index
    search = SearchService.instance(@search, current_user).search
    headers['X-Total-Count'] = search.total_count
    render json: search.results, status: :ok
  rescue SearchService::InvalidSearchError
    render json: @search.errors, status: :bad_request
  end

  # GET v1/search/autocomplete
  # GET v1/search/autocomplete.json
  def autocomplete
    render json: SearchService.autocomplete(@search, current_user), status: :ok
  rescue SearchService::InvalidSearchError
    render json: @search.errors, status: :bad_request
  end

  # GET v1/search/tag
  # GET v1/search/tag.json
  def tag
    t = Tag.find_by_name(tag_search_params[:name])
    if t.nil?
      render json: {"error": "Tag not found."}, status: :unprocessable_entity
    else    
      results = TagSearchService.search(t)
      render json: paginate(results), status: :ok
    end
  end

  private

  def set_search
    @search = Search.new(search_params)
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def search_params
    params.permit(:page, :results_per_page, :order, :query, :search_class, tags: [], subjects: [], educational_stages: [], object_types: [])
  end

  def tag_search_params
    params.permit(:page, :results_per_page, :name)
  end
end