module UrlLink

# File lib/url_link.rb, line 34
def bot_command?(text, prefix: "!")
  text.to_s.strip.start_with?(prefix)
end

# File lib/url_link.rb, line 22
def extract_first_url(text)
  match = text.to_s.match(URL_PATTERN)
  return nil unless match

  candidate = normalize_url(match[0])
  valid_url?(candidate) ? candidate : nil
end

# File lib/url_link.rb, line 18
def normalize_url(url)
  url.to_s.strip.sub(/[),.;!?]+$/, "")
end

# File lib/url_link.rb, line 30
def reserved_url?(url)
  url.to_s.match?(YOUTUBE_HOST_PATTERN)
end

# File lib/url_link.rb, line 38
def strip_bot_prefix(text, prefix: "!")
  stripped = text.to_s.strip
  return stripped unless stripped.start_with?(prefix)

  stripped.delete_prefix(prefix).strip
end

# File lib/url_link.rb, line 11
def valid_url?(url)
  uri = URI.parse(url.to_s.strip)
  uri.is_a?(URI::HTTP) && !uri.host.to_s.empty?
rescue URI::InvalidURIError
  false
end