Hey World Posts Counter

hey_world_posts.rb

#!/usr/bin/env ruby

require 'rss'
require 'open-uri'

class Blog
  def initialize(name)
    @name = name
  end

  def feed_url
    "https://world.hey.com/#{@name}/feed.atom"
  end

  def fetch_posts
    URI.open(feed_url) do |rss|
      begin
        feed = RSS::Parser.parse(rss)
        feed.items.each do |item|
          date=item.published.content
          yield date.to_s[/2021-\d\d-\d\d/]
        end
      rescue => error
        STDERR.puts "Error parsing #{feed_url}"
        STDERR.puts "#{error}"
        next
      end
    end
  end
end

posts_per_day = Hash.new
i = 0
File.read("blog_list").split.sort.each do |name|
  blog = Blog.new name
  blog.fetch_posts do |date|
    if not posts_per_day[date]
      posts_per_day[date] = 1
    else
      STDERR.print "."
      posts_per_day[date] = posts_per_day[date] + 1
    end
    i = i + 1
  end
end

posts_per_day.each do |key, value|
  puts "#{key},#{value}"
end