module RssReport

# File lib/rss_report.rb, line 33
def compact_item_body(item)
  title = item[:title].to_s
  description = item[:description].to_s.strip
  body = if description.empty? || description_redundant_with_title?(title, description)
           title
         else
           "#{title} — #{description}"
         end

  link = item[:link].to_s.strip
  body = IrcFormat.meta_join(body, link) unless link.empty?

  body
end

# File lib/rss_report.rb, line 21
def description_redundant_with_title?(title, description)
  norm_title = TextUtil.squish(title).downcase
  norm_description = TextUtil.squish(description).downcase
  return false if norm_description.empty?

  norm_description == norm_title
end

# File lib/rss_report.rb, line 29
def feed_heading(feed)
  feed["title"].to_s
end

# File lib/rss_report.rb, line 73
def format_feed_preview(feed, items)
  body_lines = items.each_with_index.map { |item, index| format_preview_item_line(index + 1, item) }
  count_label = items.length == 1 ? "1 item" : "#{items.length} items"

  [
    rss_banner(feed_heading(feed)),
    body_lines.join("\n"),
    IrcFormat.report_footer("rss", feed["title"], count_label)
  ].join("\n")
end

# File lib/rss_report.rb, line 48
def format_item_card(feed, item)
  "#{rss_banner(feed_heading(feed))} #{compact_item_body(item)}"
end

# File lib/rss_report.rb, line 52
def format_list(feeds, interval_min:)
  lines = feeds.each_with_index.map do |feed, index|
    line = "#{index + 1}. #{feed['title']} — #{feed['url']}"
    filter = feed["link_filter"].to_s.strip
    line = "#{line} — filter: #{filter}" unless filter.empty?
    line
  end
  body = lines.empty? ? "No feeds subscribed." : lines.join("\n")
  count_label = feeds.length == 1 ? "1 feed" : "#{feeds.length} feeds"

  [
    rss_banner("Subscribed feeds"),
    body,
    IrcFormat.report_footer("rss", count_label, "#{interval_min} min refresh")
  ].join("\n")
end

# File lib/rss_report.rb, line 69
def format_preview_item_line(index, item)
  "#{index}. #{compact_item_body(item)}"
end

# File lib/rss_report.rb, line 17
def rss_banner(title)
  IrcFormat.report_header(tag: TAG, title: title, style: STYLE_BANNER)
end