module RssLookup

# File lib/rss_lookup.rb, line 17
def find_feed_by_label(feeds, label)
  needle = normalize_label(label)
  return { error: "Feed not found" } if needle.empty?

  matches = feeds.select do |feed|
    hay = normalize_label(feed["title"])
    hay.include?(needle) || needle.include?(hay)
  end

  case matches.length
  when 0
    { error: "Feed not found" }
  when 1
    { feed: matches.first }
  else
    titles = matches.map { |feed| feed["title"] }.join(", ")
    { error: "Multiple feeds match — be more specific: #{titles}" }
  end
end

# File lib/rss_lookup.rb, line 13
def normalize_label(value)
  TextUtil.squish(value.to_s).gsub(/[\[\]]/, "").downcase
end