Rails - 天氣專案

資料來源: https://ithelp.ithome.com.tw/articles/10197544

 
# 查天氣

    reply_image = get_weather(received_text)



    # 沒有查到圖的話 後面的事情就不作了

    unless reply_image.nil?



      # 傳送圖片到 line

      response = reply_image_to_line(reply_image)



      # 回應 200

      head :ok



      return

    end






def get_weather(received_text)
    return nil unless received_text.include? 'J:W'
    upload_to_imgur(get_weather_from_cwb)
  end

  def get_weather_from_cwb
    uri = URI('https://www.cwb.gov.tw/V7/js/HDRadar_1000_n_val.js')
    response = Net::HTTP.get(uri)
    start_index = response.index('","') + 3
    end_index = response.index('"),') - 1
    "http://www.cwb.gov.tw" + response[start_index..end_index]
  end

  def upload_to_imgur(image_url)
    url = URI("https://api.imgur.com/3/image")
    http = Net::HTTP.new(url.host, url.port)
    http.use_ssl = true
    request = Net::HTTP::Post.new(url)
    request["authorization"] = 'Client-ID 6d2ceae9baXXXXX'

    request.set_form_data({"image" => image_url})
    response = http.request(request)
    json = JSON.parse(response.read_body)
    begin
      json['data']['link'].gsub("http:","https:")
    rescue
      nil
    end
  end


  # 傳送圖片到 line
  def reply_image_to_line(reply_image)
    return nil if reply_image.nil?

    # 取得 reply token
    reply_token = params['events'][0]['replyToken']

    # 設定回覆訊息
    message = {
      type: "image",
      originalContentUrl: reply_image,
      previewImageUrl: reply_image
    }

    # 傳送訊息
    line.reply_message(reply_token, message)
  end