From fa87edae7a66d79d5bfb4dc55b5dcf737ac986f6 Mon Sep 17 00:00:00 2001
From: Laurence de Bruxelles
 <laurence.debruxelles@digital.cabinet-office.gov.uk>
Date: Thu, 21 Oct 2021 12:36:06 +0100
Subject: [PATCH] Replace Travis CI with GitHub Actions

We want to use GitHub Actions as the tech docs template's continuous
integration/continuous deployment service. This commit removes
`.travis.yml` and adds equivalent workflows, `test.yaml` and
`publish.yaml`.

The script to publish to RubyGems was copied from the
discourse/publish-rubygems-action [[1]], with a modification to use the
github-actions[bot] user for tagging the release following suggestion from
fregante/setup-git-user action [[2]]. We avoid using the action directly
in accordance with the guidelines in the GDS Way [[3]].

[1]: https://github.com/discourse/publish-rubygems-action/blob/b55d7b9/entrypoint.sh
[2]: https://github.com/fregante/setup-git-user/blob/5ede2be/index.js
[3]: https://gds-way.cloudapps.digital/standards/source-code.html#using-github-actions-and-workflows

Use GitHub Actions bot account for creating release tags
---
 .github/workflows/publish.yaml | 63 ++++++++++++++++++++++++++++++++++
 .github/workflows/test.yaml    | 23 +++++++++++++
 .travis.yml                    | 19 ----------
 3 files changed, 86 insertions(+), 19 deletions(-)
 create mode 100644 .github/workflows/publish.yaml
 create mode 100644 .github/workflows/test.yaml
 delete mode 100644 .travis.yml

diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
new file mode 100644
index 00000000..70779922
--- /dev/null
+++ b/.github/workflows/publish.yaml
@@ -0,0 +1,63 @@
+name: Publish
+
+on:
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+
+concurrency: rubygems
+
+jobs:
+  deploy:
+    name: Publish Ruby Gem
+    environment: rubygems
+    permissions:
+      contents: write  # needed to be able to tag the release
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+        with:
+          cache: 'npm'
+          node-version: '14'
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+
+      - name: Check if new version to release
+        id: gem_version
+        run: |
+          gem_version=$(ruby -r rubygems -e "puts Gem::Specification::load('$(ls *.gemspec)').version")
+          echo "::set-output name=gem_version::$gem_version"
+
+          if git fetch origin "refs/tags/v$gem_version" >/dev/null 2>&1
+          then
+            echo "Tag 'v$gem_version' already exists"
+            echo "::set-output name=new_version::false"
+          else
+            echo "::set-output name=new_version::true"
+          fi
+
+      - name: Publish
+        if: ${{ steps.gem_version.outputs.new_version == 'true' }}
+        env:
+          RUBYGEMS_API_KEY: ${{ secrets.RUBYGEMS_API_KEY }}
+          GEM: govuk_tech_docs
+        run: |
+          mkdir -p ~/.gem
+
+          cat << EOF > ~/.gem/credentials
+          ---
+          :rubygems_api_key: ${RUBYGEMS_API_KEY}
+          EOF
+
+          chmod 0600 ~/.gem/credentials
+
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
+          bundle exec rake release
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
new file mode 100644
index 00000000..ca56cf02
--- /dev/null
+++ b/.github/workflows/test.yaml
@@ -0,0 +1,23 @@
+name: Test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+          cache: 'npm'
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+
+      - name: Run tests
+        run: bundle exec rake
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 5ee8def1..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-language: ruby
-cache:
-  bundler: true
-  npm: true
-before_install:
-  - nvm install
-  - nvm use
-  - gem update --system
-  - gem install bundler
-before_script:
-  - npm install
-deploy:
-  provider: rubygems
-  gem: govuk_tech_docs
-  api_key:
-    secure: "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"
-  on:
-    repo: alphagov/tech-docs-gem
-    branch: master