Merge pull request #35 from fortissimo1997/add-release-please

chore: set up release-please and RubyGems Trusted Publishing

Author: fortissimo1997

.github/workflows/release-please.yml

@@ -0,0 +1,14 @@
+name: Release Please
+on:
+  push:
+    branches: [ "main" ]
+  workflow_dispatch:
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@v4
+        with:
+          manifest-file: .release-please-manifest.json
+          config-file: .release-please-config.json

.github/workflows/release.yml

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+name: Publish gem on GitHub Release
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.3'
+
+      - name: Build gem (sanity check)
+        run: |
+          gem build simplecov-lcov.gemspec
+          ls -1 *.gem
+
+      - name: Push to RubyGems.org
+        uses: rubygems/release-gem@v1

.release-please-config.json

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+  "release-type": "ruby",
+  "packages": {
+    ".": {
+      "package-name": "simplecov-lcov",
+      "version-file": "lib/simplecov/lcov/version.rb",
+      "changelog-path": "CHANGELOG.md"
+    }
+  },
+  "plugins": [
+    "sentence-case"
+  ]
+}

.release-please-manifest.json

@@ -0,0 +1 @@
+{ ".": "0.8.0" }

CHANGELOG.md

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+# Changelog
+
+> ℹ️ This file is managed by **release-please**.
+> It will be automatically updated in future release PRs. Manual editing is generally not needed.
+
+## Unreleased
+
+- Set up release-please and RubyGems Trusted Publishing.

diff.patch

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+diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
+new file mode 100644
+index 0000000..1111111
+--- /dev/null
++++ b/.github/workflows/release.yml
+@@ -0,0 +1,49 @@
++name: Publish gem on GitHub Release
++on:
++  release:
++    types: [published]
++
++jobs:
++  publish:
++    # RubyGems 側の Trusted Publisher で登録した Environment 名と一致させる
++    environment: GitHubActions
++    runs-on: ubuntu-latest
++    permissions:
++      contents: write
++      id-token: write   # ← Trusted Publishing（OIDC）に必須
++
++    steps:
++      - uses: actions/checkout@v4
++        with:
++          # 念のため完全取得（CHANGELOG等で過去ログを参照するツールの保険）
++          fetch-depth: 0
++
++      - uses: ruby/setup-ruby@v1
++        with:
++          ruby-version: '3.3'
++
++      # （任意）ビルドが壊れていないことだけ軽く確認
++      - name: Build gem (sanity check)
++        run: |
++          gem build simplecov-lcov.gemspec
++          ls -1 *.gem
++
++      # RubyGems 公式 Action（APIキー不要／Trusted Publishing）
++      - name: Push to RubyGems.org
++        uses: rubygems/release-gem@v1
++        # この Action は直前に生成された *.gem を自動検出して push します

docs/RELEASING.md

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+# Releasing & Publishing
+
+This repository uses:
+
+- **Conventional Commits** (`feat:`, `fix:`, `chore:` ...)
+- **release-please** to open automated Release PRs
+- **RubyGems Trusted Publishing** via `rubygems/release-gem@v1`
+
+## Normal flow
+
+1. Merge changes to `main` using Conventional Commits.
+2. `release-please` creates a **Release PR** (bumps `lib/simplecov/lcov/version.rb` and updates `CHANGELOG.md`).
+3. Merge the Release PR → a GitHub Release and tag `vX.Y.Z` are created.
+4. The **Publish** workflow runs on `release: published` and pushes the gem to RubyGems.
+
+## One-time setup on RubyGems.org
+
+1. As the gem owner, add a **Trusted Publisher** on RubyGems.org:
+   - Select this GitHub repository
+   - Specify the workflow name: `Publish gem on GitHub Release`
+2. No `RUBYGEMS_API_KEY` is required (OIDC-based).
+
+## Notes
+
+- **Single source of truth (SSOT)** for version is `SimpleCov::Lcov::VERSION` in `lib/simplecov/lcov/version.rb`.
+- Do **not** manually edit `CHANGELOG.md`; it's auto-generated.
+- Protect `main` branch and require CI checks to pass before merge.
+- If you ever need a manual release, you can trigger `release-please` via `workflow_dispatch`.