brew/Library/Homebrew/dev-cmd/release.rb

# typed: strict
# frozen_string_literal: true

require "abstract_command"

module Homebrew
  module DevCmd
    class Release < AbstractCommand
      cmd_args do
        description <<~EOS
          Create a new draft Homebrew/brew release with the appropriate version number and release notes.

          By default, `brew release` will bump the patch version number. Pass
          `--major` or `--minor` to bump the major or minor version numbers, respectively.
          The command will fail if the previous major or minor release was made less than
          one month ago.

          *Note:* Requires write access to the Homebrew/brew repository.
        EOS
        switch "--major",
               description: "Create a major release."
        switch "--minor",
               description: "Create a minor release."
        conflicts "--major", "--minor"

        named_args :none
      end

      sig { override.void }
      def run
        safe_system "git", "-C", HOMEBREW_REPOSITORY, "fetch", "origin" if Homebrew::EnvConfig.no_auto_update?

        begin
          latest_release = GitHub.get_latest_release "Homebrew", "brew"
        rescue GitHub::API::HTTPNotFoundError
          odie "No existing releases found!"
        end
        latest_version = Version.new latest_release["tag_name"]

        if args.major? || args.minor?
          one_month_ago = Date.today << 1
          latest_major_minor_release = begin
            GitHub.get_release "Homebrew", "brew", "#{latest_version.major_minor}.0"
          rescue GitHub::API::HTTPNotFoundError
            nil
          end

          if latest_major_minor_release.blank?
            opoo "Unable to determine the release date of the latest major/minor release."
          elsif Date.parse(latest_major_minor_release["published_at"]) > one_month_ago
            odie "The latest major/minor release was less than one month ago."
          end
        end

        new_version = if args.major?
          Version.new "#{latest_version.major.to_i + 1}.0.0"
        elsif args.minor?
          Version.new "#{latest_version.major}.#{latest_version.minor.to_i + 1}.0"
        else
          Version.new "#{latest_version.major}.#{latest_version.minor}.#{latest_version.patch.to_i + 1}"
        end.to_s

        if args.major? || args.minor?
          latest_major_minor_version = "#{latest_version.major}.#{latest_version.minor.to_i}.0"
          ohai "Release notes since #{latest_major_minor_version} for #{new_version} blog post:"
          # release notes without usernames, new contributors, or extra lines
          blog_post_notes = GitHub.generate_release_notes("Homebrew", "brew", new_version,
                                                          previous_tag: latest_major_minor_version)["body"]
          blog_post_notes = blog_post_notes.lines.filter_map do |line|
            next unless (match = line.match(/^\* (.*) by @[\w-]+ in (.*)$/))

            "- [#{match[1]}](#{match[2]})"
          end.sort
          puts blog_post_notes
        end

        ohai "Creating draft release for version #{new_version}"

        release_notes = if args.major? || args.minor?
          "Release notes for this release can be found on the [Homebrew blog](https://brew.sh/blog/#{new_version}).\n"
        else
          ""
        end
        release_notes += GitHub.generate_release_notes("Homebrew", "brew", new_version,
                                                       previous_tag: latest_version)["body"]

        begin
          release = GitHub.create_or_update_release "Homebrew", "brew", new_version, body: release_notes, draft: true
        rescue *GitHub::API::ERRORS => e
          odie "Unable to create release: #{e.message}!"
        end

        puts release["html_url"]
        exec_browser release["html_url"]
      end
    end
  end
end