resolves #2065 set up fully automated release (PR #2069) [no ci]

4 files changed, 81 insertions, 13 deletions

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bb1cfc61..c6f5bd84 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,17 +1,20 @@
 name: Release
 on:
-  push:
-    tags: ['v*']
+  workflow_dispatch:
+    inputs:
+      release-version:
+        description: Enter version to release (e.g., 2.0.1).
+        required: false
 jobs:
   activate:
-    if: github.repository_owner == 'asciidoctor'
     runs-on: ubuntu-latest
+    if: github.repository_owner == 'asciidoctor' && github.event_name == 'workflow_dispatch'
     steps:
-    - name: Proceed
-      run: echo ok go
-  build:
+    - run: echo ok go
+  perform:
     needs: activate
     runs-on: ubuntu-latest
+    environment: releases
     env:
       ASCIIDOCTOR_DIAGRAM_VERSION: '~> 2.2'
       PRAWN_GMAGICK_VERSION: '0.0.9'
@@ -24,19 +27,24 @@ jobs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: '3.1'
+        bundler-cache: false
     - name: Install Linux packages
       run: |
         sudo apt-get update
         sudo apt-get install ghostscript poppler-utils libgraphicsmagick1-dev
     - name: Configure Bundler
       run: |
-        bundle config --local path .bundle/gems
-        bundle config --local without coverage docs lint
+        bundle config --local path vendor/bundle
+        bundle config --local without coverage docs
     - name: Install dependencies
       run: bundle --jobs 3 --retry 3
     - name: Run tests
       run: bundle exec rake spec
-    - name: Publish gem
-      uses: dawidd6/action-publish-gem@v1
-      with:
-        api_key: ${{ secrets.RUBYGEMS_API_KEY }}
+    - name: Run linter
+      run: bundle exec rake lint
+    - name: Setup release environment
+      run: |
+        echo RELEASE_VERSION=${{ github.event.inputs.release-version }} >> $GITHUB_ENV
+        echo RELEASE_RUBYGEMS_API_KEY=${{ secrets[format('RUBYGEMS_API_KEY_{0}', github.actor)] }} >> $GITHUB_ENV
+    - name: Build, tag, and publish gem
+      run: ./release.sh
diff --git a/Rakefile b/Rakefile
index 405c9b17..0443554a 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require_relative 'gem-version-patch'
+
 $default_tasks = [] # rubocop:disable Style/GlobalVars
 Dir.glob('tasks/*.rake').each {|file| load file }
 task default: $default_tasks unless $default_tasks.empty? # rubocop:disable Style/GlobalVars
diff --git a/lib/asciidoctor/pdf/version.rb b/lib/asciidoctor/pdf/version.rb
index ead6335c..f34b0a6f 100644
--- a/lib/asciidoctor/pdf/version.rb
+++ b/lib/asciidoctor/pdf/version.rb
@@ -2,6 +2,6 @@
 
 module Asciidoctor
   module PDF
-    VERSION = '2.0.0.dev'
+    VERSION = '2.0.0-dev'
   end
 end
diff --git a/tasks/version.rb b/tasks/version.rb
new file mode 100644
index 00000000..fa27f87d
--- /dev/null
+++ b/tasks/version.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+require 'time'
+
+release_version = ENV['RELEASE_VERSION']
+prerelease = (release_version.count '[a-z]') > 0 ? %(.#{(release_version.split '.', 3)[-1]}) : nil
+release_date = Time.now.strftime '%Y-%m-%d'
+release_user = ENV['RELEASE_USER']
+
+version_file = Dir['lib/**/version.rb'].first
+readme_file = 'README.adoc'
+changelog_file = 'CHANGELOG.adoc'
+antora_file = 'docs/antora.yml'
+
+version_contents = (File.readlines version_file, mode: 'r:UTF-8').map do |l|
+  (l.include? 'VERSION') ? (l.sub %r/'[^']+'/, %('#{release_version}')) : l
+end
+
+readme_contents = (File.readlines readme_file, mode: 'r:UTF-8').map do |l|
+  (l.start_with? ':release-version:') ? %(:release-version: #{release_version}\n) : l
+end
+if readme_contents[2].start_with? 'v'
+  readme_contents[2] = %(v#{release_version}, #{release_date}\n)
+else
+  readme_contents.insert 2, %(v#{release_version}, #{release_date}\n)
+end
+
+changelog_contents = File.readlines changelog_file, mode: 'r:UTF-8'
+if (last_release_idx = changelog_contents.index {|l| (l.start_with? '== ') && (%r/^== \d/.match? l) })
+  previous_release_version = (changelog_contents[last_release_idx].match %r/\d\S+/)[0]
+else
+  last_release_idx = changelog_contents.length
+end
+changelog_contents.insert last_release_idx, <<~END
+=== Details
+
+{url-repo}/releases/tag/v#{release_version}[git tag]#{previous_release_version ? %( | {url-repo}/compare/v#{previous_release_version}\\...v#{release_version}[full diff]) : ''}
+
+END
+if (unreleased_idx = changelog_contents.index {|l| (l.start_with? '== Unreleased') && l.rstrip == '== Unreleased' })
+  changelog_contents[unreleased_idx] = %(== #{release_version} (#{release_date}) - @#{release_user}\n)
+else
+  changelog_contents.insert last_release_idx, <<~END
+  == #{release_version} (#{release_date}) - @#{release_user}
+
+  _No changes since previous release._
+
+  END
+end
+
+antora_contents = (File.readlines antora_file, mode: 'r:UTF-8').map do |l|
+  (l.start_with? 'prerelease:') ? %(prerelease: #{prerelease ? ?' + prerelease + ?' : 'false'}\n) : l
+end
+
+File.write version_file, version_contents.join, mode: 'w:UTF-8'
+File.write readme_file, readme_contents.join, mode: 'w:UTF-8'
+File.write changelog_file, changelog_contents.join, mode: 'w:UTF-8'
+File.write antora_file, antora_contents.join, mode: 'w:UTF-8'