educoder/app/services/shixun_search_service.rb

class ShixunSearchService < ApplicationService
  include ElasticsearchAble

  attr_reader :params, :laboratory

  def initialize(params, laboratory)
    @params = params
    @laboratory = laboratory
  end

  def call
    # 全部实训/我的实训
    type = params[:type] || "all"
    # 状态：已发布/未发布
    status = params[:status] || "all"

    @shixuns = laboratory.shixuns.none_closed

    # 超级管理员用户显示所有未隐藏的实训、非管理员显示所有已发布的实训（对本单位公开且未隐藏未关闭）
    if type == "mine"
      @shixuns = @shixuns.where(id: User.current.shixuns)
    else
      if User.current.admin? || User.current.business? || !User.current.school_id
        @shixuns = @shixuns.where(hidden: 0)
      else
        shixun_ids = ShixunSchool.where(school_id: User.current.school_id).pluck(:shixun_id)
        shixun_ids = shixun_ids.reject(&:blank?).length == 0 ? -1 : shixun_ids.join(",")

        @shixuns = @shixuns.where("use_scope = 0 or id in (#{shixun_ids})").unhidden.publiced.or(@shixuns.where(id: User.current.shixuns))
      end
    end

    unless status == "all"
      @shixuns = status == "published" ? @shixuns.where(status: 2) : @shixuns.where(status: [0, 1])
    end

    if params[:no_jupyter]
      @shixuns = @shixuns.where(is_jupyter: 0)
    end

    ## 筛选 难度
    if params[:diff].present? && params[:diff].to_i != 0
      @shixuns = @shixuns.where(trainee: params[:diff])
    end

    Shixun.search(keyword, search_options)
  end

  private

  def search_options

    order =
        if sort_str == "wechat_myshixuns_count"
          {"is_wechat_support" => "desc", "myshixuns_count" => order_str}
        else
          {sort_str => order_str}
        end
    model_options = {
      includes: [ :shixun_info, :challenges, :subjects, user: { user_extension: :school } ]
    }
    model_options.merge!(where: { id: @shixuns.pluck(:id) })
    model_options.merge!(order: order)
    model_options.merge!(default_options)
    model_options
  end

  def order_str
    params[:order] || "desc"
  end

  def sort_str
    params[:sort] || "myshixuns_count"
  end
end