class RefreshSitemapWorker
  include Sidekiq::Worker
  require "redis"

  def perform
    lock_key = "refresh_sitemap_lock"
    lock_ttl = 60 # 锁的生存时间，单位为秒

    redis = Redis.new(url: ENV.fetch("REDIS_URL", "redis://localhost:6379/1"))

    if redis.set(lock_key, Time.current.to_s, nx: true, ex: lock_ttl)
      begin
        setup_sitemap_config
        # 生成默认的不带语言前缀的 sitemap
        generate_sitemap(nil)

        # 为每个可用语言生成带前缀的 sitemap
        I18n.available_locales.each do |locale|
          generate_sitemap(locale)
        end
      ensure
        redis.del(lock_key)
      end
    else
      Rails.logger.info "Sitemap refresh is already in progress"
    end
  end

  private

  def setup_sitemap_config
    @host = Rails.env.production? ? "https://todayaiweather.com" : "http://127.0.0.1:3000"
    Rails.application.routes.default_url_options[:host] = @host
    SitemapGenerator::Sitemap.default_host = ENV.fetch("RAILS_SITEMAP_DEFAULT_HOST", @host)

    if Rails.env.production?
      SitemapGenerator::Sitemap.adapter = SitemapGenerator::AwsSdkAdapter.new(
        ENV.fetch("AWS_BUCKET", Rails.application.credentials.dig(:minio, :bucket)),
        aws_access_key_id: ENV.fetch("AWS_ACCESS_KEY_ID", Rails.application.credentials.dig(:minio, :access_key_id)),
        aws_secret_access_key: ENV.fetch("AWS_SECRET_ACCESS_KEY_ID", Rails.application.credentials.dig(:minio, :secret_access_key)),
        aws_region: ENV.fetch("AWS_REGION", Rails.application.credentials.dig(:minio, :region)),
        force_path_style: ENV.fetch("AWS_FORCE_PATH_STYLE", Rails.application.credentials.dig(:minio, :force_path_style)),
        endpoint: ENV.fetch("AWS_ENDPOINT", Rails.application.credentials.dig(:minio, :endpoint)),
        )
    else
      SitemapGenerator::Sitemap.adapter = SitemapGenerator::AwsSdkAdapter.new(
        ENV.fetch("AWS_DEV_BUCKET", Rails.application.credentials.dig(:minio_dev, :bucket)),
        aws_access_key_id: ENV.fetch("AWS_DEV_ACCESS_KEY_ID", Rails.application.credentials.dig(:minio_dev, :access_key_id)),
        aws_secret_access_key: ENV.fetch("AWS_DEV_SECRET_ACCESS_KEY_ID", Rails.application.credentials.dig(:minio_dev, :secret_access_key)),
        aws_region: ENV.fetch("AWS_DEV_REGION", Rails.application.credentials.dig(:minio_dev, :region)),
        force_path_style: ENV.fetch("AWS_FORCE_PATH_STYLE", Rails.application.credentials.dig(:minio_dev, :force_path_style)),
        endpoint: ENV.fetch("AWS_DEV_ENDPOINT", Rails.application.credentials.dig(:minio_dev, :endpoint)),
        )
    end
    SitemapGenerator::Sitemap.sitemaps_path = "sitemaps/"
  end

  def generate_sitemap(locale = nil)
    # 设置当前语言环境
    I18n.locale = locale || I18n.default_locale
    Rails.application.routes.default_url_options[:locale] = locale

    # 设置 sitemap 路径
    # path_prefix = locale ? "sitemaps/#{locale}/" : "sitemaps/"
    # SitemapGenerator::Sitemap.sitemaps_path = path_prefix

    filename = locale==nil ? "sitemap" : "sitemap_#{locale}"
    SitemapGenerator::Sitemap.create(filename: filename) do
      available_locales = I18n.available_locales

      # 首页
      add root_path(locale: locale),
          changefreq: "daily",
          priority: 1.0,
          alternate: available_locales.map { |al|
            { lang: al, href: root_url(locale: al) }
          }

      # 城市列表页
      add cities_path(locale: locale),
          changefreq: "daily",
          priority: 0.9,
          alternate: available_locales.map { |al|
            { lang: al, href: cities_url(locale: al) }
          }

      # 艺术作品列表页
      add arts_path(locale: locale),
          changefreq: "daily",
          priority: 0.9,
          alternate: available_locales.map { |al|
            { lang: al, href: arts_url(locale: al) }
          }

      # 城市详情页
      City.find_each do |city|
        add city_path(city, locale: locale),
            changefreq: "daily",
            priority: 0.8,
            lastmod: city.updated_at,
            alternate: available_locales.map { |al|
              { lang: al, href: city_url(city, locale: al) }
            }
      end

      # 天气艺术作品页
      WeatherArt.includes(:city).find_each do |art|
        if art.image.attached?
          add city_weather_art_path(art.city, art, locale: locale),
              changefreq: "daily",
              priority: 0.7,
              lastmod: art.updated_at,
              images: [ {
                         loc: url_for(art.image),
                         title: "#{art.city.name} Weather Art - #{art.weather_date.strftime('%B %d, %Y')}"
                       } ],
              alternate: available_locales.map { |al|
                { lang: al, href: city_weather_art_url(art.city, art, locale: al) }
              }
        end
      end
    end

    Rails.logger.info "Generated sitemap for #{locale || 'default'} version"
  rescue => e
    Rails.logger.error "Error generating sitemap for #{locale || 'default'}: #{e.message}"
    raise e
  end
end