AWS Lambda用のマストドンRSS投稿BOTプログラム

mastodon_rss_bot.rb

require 'net/https'
require 'rss'

def lambda_handler(event:, context:)
  iwatedon_api_url = 'https://enter-your-mastodon-domain/api/v1/statuses'
  access_token = 'enter-your-access-token'
  urls = [
    'rss url 1',
    'rss url 2',
    'rss url 3',
    'rss url 4', # ...
  ]
  interval = 30 * 60 # 30 minutes

  urls.each do |url|
    rss = nil
    begin
      rss = RSS::Parser.parse(url)
    rescue RSS::InvalidRSSError
      rss = RSS::Parser.parse(url, false)
    end
    rss.channel.items.each do |item|
      pub_date = item.pubDate.to_i
      break if Time.now.to_i - pub_date > interval

      title = item.title
      link = item.link
      uri = URI.parse(iwatedon_api_url)
      http = Net::HTTP.new(uri.host, uri.port).tap do |obj|
        obj.use_ssl = true
        obj.verify_mode = OpenSSL::SSL::VERIFY_NONE
      end
      request = Net::HTTP::Post.new(uri.path)
      request.set_form_data({
                              'access_token' => access_token,
                              'status' => "#{title} / #{link} #iwate #岩手県 ",
                              'visibility' => 'unlisted'
                            })
      http.request(request)
    end
  end

  { statusCode: 200, body: JSON.generate('OK') }
end