Class: SemVerComponents::Outputs::SemanticReleaseGenerateNotes

Inherits:
SemVerComponents::Output show all
Defined in:
lib/sem_ver_components/outputs/semantic_release_generate_notes.rb

Instance Method Summary collapse

Methods inherited from SemVerComponents::Output

#initialize

Constructor Details

This class inherits a constructor from SemVerComponents::Output

Instance Method Details

#process(commits_info) ⇒ Object

Process commits info

Parameters

  • commits_info (Array< Hash<Symbol, Object> >): List of commits info:

    • components_bump_levels (Hash<String or nil, Integer>): Set of bump levels (0: patch, 1: minor, 2: major) per component name (nil for global)

    • commit (Git::Object::Commit): Corresponding git commit



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# File 'lib/sem_ver_components/outputs/semantic_release_generate_notes.rb', line 15

def process(commits_info)
  # Compute new version
  new_version =
    if @local_git.git_from.nil?
      '0.0.1'
    elsif @local_git.git_from =~ /^v(\d+)\.(\d+)\.(\d+)$/
      major = Integer($1)
      minor = Integer($2)
      patch = Integer($3)
      bump_level = commits_info.map { |commit_info| commit_info[:components_bump_levels].values }.flatten(1).max
      case bump_level
      when 0
        patch += 1
      when 1
        minor += 1
        patch = 0
      when 2
        major += 1
        minor = 0
        patch = 0
      else
        raise "Invalid bump level: #{bump_level}"
      end
      "#{major}.#{minor}.#{patch}"
    else
      raise "Can't generate release notes from a git ref that is not a semantic release (#{@local_git.git_from})"
    end
  git_url = @local_git.git.remote('origin').url
  git_url = git_url[0..-5] if git_url.end_with?('.git')
  # Group commits per bump level, per component
  # Hash< String or nil, Hash< Integer, Array<Git::Object::Commit> >
  commits_per_component = {}
  # Also reference commits to be ignored: commits that are part of a merge commit
  merged_commits = []
  commits_info.each do |commit_info|
    git_commit = commit_info[:commit]
    commit_info[:components_bump_levels].each do |component, bump_level|
      commits_per_component[component] = {} unless commits_per_component.key?(component)
      commits_per_component[component][bump_level] = [] unless commits_per_component[component].key?(bump_level)
      commits_per_component[component][bump_level] << git_commit
    end
    # In the case of a merge commit, reference all commits that are part of this merge commit, directly from the graph
    merged_commits.concat(@local_git.git_log.between(@local_git.git.merge_base(*git_commit.parents.map(&:sha)).first.sha, git_commit.sha)[1..-1].map(&:sha)) if git_commit.parents.size > 1
  end
  puts "# [v#{new_version}](#{git_url}/compare/#{@local_git.git_from}...v#{new_version}) (#{Time.now.utc.strftime('%F %T')})"
  puts
  commits_per_component.sort_by { |component, _component_info| component || '' }.each do |(component, component_info)|
    puts "## #{component.nil? ? 'Global changes' : "Changes for #{component}"}\n" if commits_per_component.size > 1 || !component.nil?
    component_info.each do |bump_level, commits|
      puts "### #{
        case bump_level
        when 0
          'Patches'
        when 1
          'Features'
        when 2
          'Breaking changes'
        else
          raise "Invalid bump level: #{bump_level}"
        end
      }"
      puts
      # Gather an ordered set of commit lines (with the corresponding commit sha) in order to not duplicate the info when there are merge commits
      # Hash< String, String >
      commit_lines = {}
      commits.each do |commit|
        # Don't put merged commits as we consider the changelog should contain the merge commit comment.
        next if merged_commits.include?(commit.sha)
        message_lines = commit.message.split("\n")
        commit_line = message_lines.first
        if commit_line =~ /^Merge pull request .+$/
          # Consider the next line as commit line
          next_line = message_lines[1..-1].join("\n").strip.split("\n").first
          commit_line = next_line unless next_line.nil?
        end
        commit_lines[commit_line] = commit.sha
      end
      commit_lines.each do |commit_line, commit_sha|
        puts "* [#{commit_line}](#{git_url}/commit/#{commit_sha})"
      end
      puts
    end
  end
end