Class: GemMaintainer::ChangelogFetcher

Inherits:
Object
  • Object
show all
Defined in:
lib/gem_maintainer/changelog_fetcher.rb

Overview

Fetches the changelog URL for a gem. Strategy (mirrors bin/gem-changelog logic):

1. changelog_uri from RubyGems metadata
2. source_code_uri — search GitHub for a changelog file
3. homepage_uri    — search GitHub for a changelog file
4. Locally installed gem directory

Constant Summary collapse

RUBYGEMS_API = 
"https://rubygems.org/api/v1/gems/%s.json"
CHANGELOG_FILES = 
%w[CHANGELOG.md CHANGELOG.txt CHANGELOG CHANGES.md CHANGES History.md].freeze
GITHUB_BRANCHES = 
%w[main master].freeze

Instance Method Summary collapse

Instance Method Details

#fetch(gem_name) ⇒ Object 



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# File 'lib/gem_maintainer/changelog_fetcher.rb', line 19

def fetch(gem_name)
  metadata = rubygems_metadata(gem_name)
  return nil unless metadata

  changelog_uri  = metadata["changelog_uri"]
  source_code_uri = metadata["source_code_uri"]
  homepage_uri   = metadata["homepage_uri"]

  # 1. Explicit changelog_uri
  if changelog_uri && !changelog_uri.empty?
    return changelog_uri if url_exists?(changelog_uri)
  end

  # 2. source_code_uri → GitHub search
  if source_code_uri && source_code_uri.include?("github.com")
    url = find_github_changelog(source_code_uri)
    return url if url
  end

  # 3. homepage_uri → GitHub search
  if homepage_uri && homepage_uri.include?("github.com")
    url = find_github_changelog(homepage_uri)
    return url if url
  end

  # 4. Locally installed gem
  local = find_local_changelog(gem_name)
  return local if local

  # Fallback: RubyGems page
  "https://rubygems.org/gems/#{gem_name}"
end