class GenerateWeatherArtJob < ApplicationJob
  queue_as :default

  def perform(*args)
    city = args[0]
    return if city.last_weather_fetch&.today?

    weather_service = WeatherService.new
    ai_service = AiService.new

    # 获取天气数据
    weather_data = weather_service.get_weather(city.latitude, city.longitude)
    return unless weather_data

    # 生成提示词
    prompt = ai_service.generate_prompt(city, weather_data)
    return unless prompt

    # 生成图像
    image_url = ai_service.generate_image(prompt)
    return unless image_url

    # 创建天气艺术记录
    weather_art = city.weather_arts.create!(
      weather_date: Date.today,
      **weather_data,
      prompt: prompt
    )

    # 下载并附加图像
    tempfile = Down.download(image_url)
    weather_art.image.attach(
      io: tempfile,
      filename: "#{city.country.name}-#{city.name.parameterize}-#{Time.current.strftime('%Y%m%d-%H%M%S')}.png"
    )

    # 更新城市状态
    city.update!(
      last_weather_fetch: Time.current,
      last_image_generation: Time.current
    )
  rescue => e
    Rails.logger.error "Error generating weather art for #{city.name}: #{e.message}"
  end
end