Add media and enclosure helpers

[cardmagic]

Summary

Add helper methods to easily extract media content and enclosures from feeds, especially useful for podcast and media-heavy feeds.

Proposed Features

enclosures

Extract all enclosures (commonly used in podcasts):

def enclosures
  items.filter_map do |item|
    # Check for standard enclosure tag
    if item[:enclosure_url]
      {
        url: item[:enclosure_url],
        type: item[:enclosure_type],
        length: item[:enclosure_length],
        item: item
      }
    end
  end
end

Requires adding enclosure tags:

SimpleRSS.item_tags << :'enclosure#url'
SimpleRSS.item_tags << :'enclosure#type'
SimpleRSS.item_tags << :'enclosure#length'

images

Collect all image URLs from items:

def images
  items.filter_map do |item|
    item[:media_thumbnail_url] || item[:media_content_url]
  end.compact.uniq
end

Item-level helper

# Add to item hash via method_missing or explicit method
item.has_media?
item.media_url  # Returns first available media URL

Additional Tags to Support

Consider adding these to default @@item_tags:

• enclosure#url, enclosure#type, enclosure#length
• itunes:duration, itunes:image#href
• media:description

Benefits

• First-class podcast feed support
• Easy media extraction for feed readers
• Consistent interface across different media tag formats