Add release-please for automated releases (#435)

Replace the manual version-bump workflow and PR-triggered release flow
with release-please for automated changelog generation and releases.
The publish workflow now triggers on GitHub release events.
Also adds a PR title linter to enforce conventional commits.

Co-authored-by: Garen J. Torikian <gjtorikian@users.noreply.github.com>

Author: workos-sdk-automation[bot]

.github/workflows/lint-pr-title.yml

@@ -0,0 +1,20 @@
+name: Lint PR Title
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - edited
+      - synchronize
+
+permissions:
+  pull-requests: read
+
+jobs:
+  main:
+    name: Validate PR title
+    runs-on: ubuntu-latest
+    steps:
+      - uses: amannn/action-semantic-pull-request@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release-please.yml

@@ -0,0 +1,25 @@
+name: Release Please
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate token
+        id: generate-token
+        uses: actions/create-github-app-token@v2
+        with:
+          app-id: ${{ vars.SDK_BOT_APP_ID }}
+          private-key: ${{ secrets.SDK_BOT_PRIVATE_KEY }}
+
+      - uses: googleapis/release-please-action@v4
+        with:
+          token: ${{ steps.generate-token.outputs.token }}

.github/workflows/release.yml

@@ -1,53 +1,16 @@
 name: Release
 
 on:
-  pull_request:
-    types: [closed]
-    branches: [main]
+  release:
+    types: [published]
 
 defaults:
   run:
     shell: bash
 
 jobs:
-  create-release:
-    name: Create GitHub Release
-    if: github.event.pull_request.merged == true && contains(github.event.pull_request.labels.*.name, 'version-bump')
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-    outputs:
-      version: ${{ steps.get-version.outputs.version }}
-    steps:
-      - name: Generate token
-        id: generate-token
-        uses: actions/create-github-app-token@v2
-        with:
-          app-id: ${{ vars.SDK_BOT_APP_ID }}
-          private-key: ${{ secrets.SDK_BOT_PRIVATE_KEY }}
-
-      - name: Checkout
-        uses: actions/checkout@v6
-        with:
-          token: ${{ steps.generate-token.outputs.token }}
-
-      - name: Get version from version.rb
-        id: get-version
-        run: |
-          VERSION=$(grep "VERSION = " lib/workos/version.rb | sed "s/.*VERSION = '\(.*\)'/\1/")
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
-
-      - name: Create Release
-        uses: softprops/action-gh-release@v2
-        with:
-          tag_name: v${{ steps.get-version.outputs.version }}
-          name: v${{ steps.get-version.outputs.version }}
-          generate_release_notes: true
-          token: ${{ steps.generate-token.outputs.token }}
-
   publish:
     name: Publish to RubyGems
-    needs: create-release
     runs-on: ubuntu-latest
     permissions:
       id-token: write
@@ -72,5 +35,6 @@ jobs:
 
       - name: Publish to RubyGems
         run: |
+          VERSION="${GITHUB_REF_NAME#v}"
           bundle exec rake build
-          gem push pkg/workos-${{ needs.create-release.outputs.version }}.gem --host https://rubygems.org
+          gem push pkg/workos-${VERSION}.gem --host https://rubygems.org

.github/workflows/version-bump.yml

@@ -0,0 +1,3 @@
+{
+  ".": "6.0.0"
+}

.release-please-manifest.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+  "packages": {
+    ".": {
+      "release-type": "ruby",
+      "package-name": "workos",
+      "version-file": "lib/workos/version.rb",
+      "changelog-path": "CHANGELOG.md"
+    }
+  }
+}