module Hoe::Markdown::Util

def self.linkify_github_issues(markdown, issues_uri)
  if issues_uri.nil? || issues_uri.empty?
    raise "#{__FILE__}:#{__method__}: URI for bugs cannot be empty\n"
  end
  issue_uri_regex = %r{
    # not already in a markdown hyperlink
    (?<!\]\()
    #{issues_uri}/([[:digit:]]+)
    # don't truncate the issue number to meet the previous negative lookahead
    (?![[[:digit:]]])
  }x
  pull_uri = issues_uri.gsub("issues", "pull")
  pull_uri_regex = %r{
    # not already in a markdown hyperlink
    (?<!\]\()
    #{pull_uri}/([[:digit:]]+)
    # don't truncate the issue number to meet the previous negative lookahead
    (?![[[:digit:]]])
  }x
  markdown
    .gsub(GITHUB_ISSUE_MENTION_REGEX, "[#\\1](#{issues_uri}/\\1)")
    .gsub(issue_uri_regex, "[#\\1](#{issues_uri}/\\1)")
    .gsub(pull_uri_regex, "[#\\1](#{pull_uri}/\\1)")
end

def self.linkify_github_usernames(markdown)
  markdown.gsub(GITHUB_USER_REGEX, "[@\\1](https://github.com/\\1)")
end