gitlab-org--gitlab-foss/app/controllers/search_controller.rb

class SearchController < ApplicationController
  skip_before_action :authenticate_user!

  include SearchHelper

  layout 'search'

  def show
    if params[:project_id].present?
      @project = Project.find_by(id: params[:project_id])
      @project = nil unless can?(current_user, :download_code, @project)
    end

    if params[:group_id].present?
      @group = Group.find_by(id: params[:group_id])
      @group = nil unless can?(current_user, :read_group, @group)
    end

    return if params[:search].blank?

    @search_term = params[:search]

    @scope = params[:scope]
    @show_snippets = params[:snippets].eql? 'true'

    @search_results =
      if @project
        unless %w(blobs notes issues merge_requests milestones wiki_blobs
                  commits).include?(@scope)
          @scope = 'blobs'
        end

        Search::ProjectService.new(@project, current_user, params).execute
      elsif @show_snippets
        unless %w(snippet_blobs snippet_titles).include?(@scope)
          @scope = 'snippet_blobs'
        end

        Search::SnippetService.new(current_user, params).execute
      else
        unless %w(projects issues merge_requests milestones).include?(@scope)
          @scope = 'projects'
        end
        Search::GlobalService.new(current_user, params).execute
      end

    @search_objects = @search_results.objects(@scope, params[:page])

    check_single_commit_result
  end

  def autocomplete
    term = params[:term]

    if params[:project_id].present?
      @project = Project.find_by(id: params[:project_id])
      @project = nil unless can?(current_user, :read_project, @project)
    end

    @ref = params[:project_ref] if params[:project_ref].present?

    render json: search_autocomplete_opts(term).to_json
  end

  private

  def check_single_commit_result
    if @search_results.single_commit_result?
      only_commit = @search_results.objects('commits').first
      query = params[:search].strip.downcase
      found_by_commit_sha = Commit.valid_hash?(query) && only_commit.sha.start_with?(query)

      redirect_to namespace_project_commit_path(@project.namespace, @project, only_commit) if found_by_commit_sha
    end
  end
end