get_weather_report.rb

  lass Time
  def datetime
    y = self.year
    m = self.month
    d = self.day
    "%04d-%02d-%02d" % [y, m, d]
  end
end

class Modifier
  class << self
    def modify(text)
      text 
      .gsub(/　/, "")
      .gsub(/後/, "からの")
      .gsub(/一時/, "ちょっとま")
      .gsub(/を伴う/, "がきよる")
      .gsub(/時々/, "たま～に")
      .gsub(/を伴い/, "と一緒に")
      .gsub(/非常に/, "めっちゃ")
      .gsub(/激しく/, "ぎょーさん") 
      .gsub(/山地/, "山のほう")
      .gsub(/未明/, "夜おそーに")
      .gsub(/では/, "らへんは")
      .gsub(/所により/, "場所によっては")
      .gsub(/海上/, "海の上")
      .gsub(/夜遅く/, "夜遅くに") 
      .gsub(/晴れ/, "☀️、")
      .gsub(/雨/, "☔️、")
      .gsub(/雪/, "⛄️、")
      .gsub(/くもり/, "☁️、")
      .gsub(/雷/, "⚡️、")
    end
  end
end

def get_xml_link(api_url)
  uri = URI.parse(URI.escape(api_url))
  http = SimpleHttp.new("http", uri.host, uri.port)
  response = http.get(uri.path + "?" + uri.query)
  latest_link = JSON.parse(response.body)["data"].max { |a, b| a["datetime"] <=> b["datetime"] }

  return latest_link["link"]
end

def get_weather_report(xml_url)
  weather_text = ""
  uri = URI.parse(URI.escape(xml_url))
  http = SimpleHttp.new("http", uri.host, uri.port)
  response = http.get(uri.path + (uri.query ? "?" + uri.query : ""))
  xml_str = response.body
  root = XmlParser.parse(xml_str)

  sentence = root.find("WeatherForecastPart", {"refID"=>"1"}).find("Sentence").text

  weather_text << Modifier.modify(sentence)
  weather_text << "\n"

  low_temp = "いっちゃん低い温度は "
  high_temp = "逆にいっちゃん高い温度は "
  meteo_infos = root.find('MeteorologicalInfos', {"type"=>"地点予報"})
  time_series_info = meteo_infos.find('TimeSeriesInfo')
  time_series_info.find('TimeDefines').find_all('TimeDefine').each do |time_define|
    node = time_define.find('Name')
    case node.text
    when "明日朝", "今日日中"
      id = node.parent.attributes["timeId"]

      temp_node = root.find("jmx_eb:Temperature", {"refID"=>"#{id}"})

      case temp_node.attributes["type"]
      when "朝の最低気温"
        __dir__ = File.dirname(__FILE__)
        low_temp << File.read(File.join(__dir__, "lower_temp.txt")).chomp << " " << temp_node.attributes["unit"]
        File.open(File.join(__dir__ , "lower_temp.txt"), "w") do |f|
          f.write(temp_node.text)
        end
      when "日中の最高気温"
        high_temp << temp_node.text << " " << temp_node.attributes["unit"] << "やで"
      end
    end
  end
  weather_text << low_temp
  weather_text << "\n"
  weather_text << high_temp
  weather_text << "\n"
  weather_text
end

def get_weather_text
  now_time = Time.now
  now_time = Time.gm(2016, 1, 16, 7, 0, 0)
  datetime = now_time.datetime

  api_url = "http://api.aitc.jp/jmardb-api/search?title=府県天気予報&areacode_mete=270000&datetime=#{datetime} 00:00:00&datetime=#{datetime} 07:00:00"

  xml_url = get_xml_link(api_url)

  get_weather_report(xml_url)
end