deploy.yml

name: Deploy

##############################################################################
# WARNING!
# The deploy workflow (re-)uses information retrieved from the original
# commit which triggered the workflow, such as the branch name, the committer,
# and the commit message.
#
# This type of data should always be regarded as **untrusted** input and when
# these `github....` variables are used directly within the `run` context,
# they can lead to script injection and unintended execution of commands.
#
# To mitigate the risk of these type of script injection attacks, untrusted
# data is first set as a step-specific interim environment variable and only
# after that the environment variable (not the github variables directly)
# is used in the `run` context.
#
# This complies with the current best practices regarding defending against
# these type of attacks as per January 2022.
# For more information, see:
# https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions
##############################################################################

on:
  push:
    # Trigger the workflow on select branches.
    branches:
      - trunk
      - 'release/**'
      - 'hotfix/[0-9]+.[0-9]+*'
      - 'feature/**'
    # Trigger the workflow whenever a new tag is created.
    tags:
      - '**'
  # Allow manually triggering the workflow.
  workflow_dispatch:

# Cancels all previous workflow runs for the same branch that have not yet completed.
concurrency:
  # The concurrency group contains the workflow name and the branch name.
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  DIST_ORG: 'Yoast-dist'
  DIST_DEFAULT_BRANCH: 'main'

jobs:
  prepare:
    name: "Prepare the artifact"
    # Don't run on forks.
    if: github.repository_owner == 'Yoast'

    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Install PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: 7.2
          coverage: none

      # This action also handles the caching of the Yarn dependencies.
      # https://github.com/actions/setup-node
      - name: Set up node and enable caching of dependencies
        uses: actions/setup-node@v3
        with:
          node-version: '14'
          cache: 'yarn'

      - name: "Debug info: show tooling versions"
        run: |
          php -v
          node --version
          npm --version
          yarn --version
          grunt --version
          git --version

      # Install dependencies and handle caching in one go.
      # The Grunt artifact creation will run `composer install` multiple times (both no-dev as well as dev),
      # however, Composer packages downloaded are not cached via Grunt.
      # Running `composer install` ahead of time will ensure that the cache is warmed up
      # and available across runs of the same workflow.
      # @link https://github.com/marketplace/actions/install-composer-dependencies
      - name: Install Composer dependencies
        uses: ramsey/composer-install@v2
        with:
          # Bust the cache at least once a month - output format: YYYY-MM.
          custom-cache-suffix: $(date -u "+%Y-%m")

      - name: Yarn install
        run: yarn install

      - name: "Grunt: set package version (tags only)"
        if: ${{ github.event_name == 'push' && github.ref_type == 'tag' }}
        env:
          REF_NAME: ${{ github.ref_name }}
        run: grunt set-version -new-version="$REF_NAME"

      - name: "Grunt: update package version (tags only)"
        if: ${{ github.event_name == 'push' && github.ref_type == 'tag' }}
        run: grunt update-version

      - name: "Grunt: create artifact"
        run: grunt artifact

      - name: "Copy composer.json"
        run: cp composer.json ./artifact

      - name: "Debug info: show contents of artifacts directory"
        run: tree -aC ./artifact

      - name: "Debug info: check git status"
        run: git status -b -v -u

      # Retention is normally 90 days, but this artifact is only for review
      # and use in the next step, so no need to keep it for more than a day.
      - name: Upload the artifact folder
        uses: actions/upload-artifact@v3
        if: ${{ success() }}
        with:
          name: deploy-artifact
          path: ./artifact
          if-no-files-found: error
          retention-days: 1

  deploy:
    name: "Deploy to dist"
    # Don't run on forks.
    if: github.repository_owner == 'Yoast'

    needs: prepare

    runs-on: ubuntu-latest

    steps:
      - name: "Set variable: short sha"
        id: set_sha
        env:
          SHA: ${{ github.sha }}
        run: |
          shortsha=$(echo "$SHA" | cut -b 1-6)
          echo "SHORTSHA=$shortsha" >> $GITHUB_OUTPUT

      - name: "Set variables: target branch, commit title"
        id: set_vars
        env:
          REF_NAME: ${{ github.ref_name }}
        run: |
          if [[ "${{ github.event_name }}" == 'push' && "${{ github.ref_type }}" == 'branch' && "$REF_NAME" != "${{ env.DIST_DEFAULT_BRANCH }}" ]]; then
            echo "BRANCH=$REF_NAME" >> $GITHUB_OUTPUT
            echo "TITLE=Syncing branch $REF_NAME (sha: ${{ steps.set_sha.outputs.SHORTSHA }})" >> $GITHUB_OUTPUT
          elif [[ "${{ github.event_name }}" == 'workflow_dispatch' && "$REF_NAME" != "${{ env.DIST_DEFAULT_BRANCH }}" ]]; then
            echo "BRANCH=$REF_NAME" >> $GITHUB_OUTPUT
            echo "TITLE=Manual deploy for $REF_NAME (sha: ${{ steps.set_sha.outputs.SHORTSHA }})" >> $GITHUB_OUTPUT
          else # = Pushed tag.
            echo "BRANCH=${{ env.DIST_DEFAULT_BRANCH }}" >> $GITHUB_OUTPUT
            echo "TITLE=Release $REF_NAME" >> $GITHUB_OUTPUT
          fi

      - name: Checkout Yoast Dist repo
        uses: actions/checkout@v3
        with:
          repository: ${{ env.DIST_ORG }}/${{ github.event.repository.name }}
          ref: ${{ env.DIST_DEFAULT_BRANCH }}
          # Personal Access Token for (push) access to the dist version of the repo.
          token: ${{ secrets.YOASTBOT_CI_PAT_DIST }}
          fetch-depth: 0

      - name: "Create branch/Switch to branch"
        if: ${{ steps.set_vars.outputs.BRANCH != env.DIST_DEFAULT_BRANCH }}
        run: git checkout ${{ steps.set_vars.outputs.BRANCH }} 2>/dev/null || git checkout -b ${{ steps.set_vars.outputs.BRANCH }}

      # Clean out all files to make sure that deleted files will actually
      # be deleted when the artifact gets put in place.
      - name: Remove all files
        run: |
          # Enable extended pattern matching.
          shopt -s extglob
          # Remove everything, except the ".git" directory.
          rm -vrf !(.git/*)
          # Disable extended pattern matching.
          shopt -u extglob

      # After the previous step, only the `.git` directory and its contents should remain.
      - name: "Debug info: show contents of root directory after cleaning"
        run: tree -aC .

      # The artifact will be unpacked into the root directory of the repository.
      - name: Download and unpack the prepared artifact
        uses: actions/download-artifact@v3
        with:
          name: deploy-artifact

      # Remove the vendor directory from the artifact, composer will generate it's own autoload.
      - name: Remove generated vendor directory
        run: rm -vrf ./vendor

      - name: "Debug info: show contents of root directory after artifact insertion"
        run: tree -aC .

      - name: "Debug info: check git status"
        run: git status -b -v -u

      - name: Set Git config
        env:
          ACTOR: ${{ github.actor }}
        run: |
          git config user.name 'GitHub Action'
          git config user.email "$ACTOR@users.noreply.github.com"

      - name: Stage files
        run: git add -A

      - name: "Commit the files (branch)"
        if: ${{ github.event_name != 'push' || github.ref_type != 'tag' }}
        env:
          COMMITTER: ${{ github.event.head_commit.committer.username }}
          COMMIT_MSG: ${{ github.event.head_commit.message }}
          COMMIT_URL: ${{ github.event.head_commit.url }}
          COMMIT_TIME: ${{ github.event.head_commit.timestamp }}
        run: |
          git commit --allow-empty -m "${{ steps.set_vars.outputs.TITLE }}" \
            -m "Synced up to commit hash: $COMMIT_URL" \
            -m "Timestamp last commit: $COMMIT_TIME" \
            -m "Committer last commit: @$COMMITTER" \
            -m "" \
            -m "Commit message last commit:" \
            -m "---------------------------" \
            -m "$COMMIT_MSG"

      - name: "Commit the files (release)"
        if: ${{ github.event_name == 'push' && github.ref_type == 'tag' }}
        env:
          COMMITTER: ${{ github.event.head_commit.committer.username }}
          COMMIT_MSG: ${{ github.event.head_commit.message }}
          COMMIT_URL: ${{ github.event.head_commit.url }}
          COMMIT_TIME: ${{ github.event.head_commit.timestamp }}
        run: |
          git commit -m "${{ steps.set_vars.outputs.TITLE }}" \
            -m "Commit hash for tag: $COMMIT_URL" \
            -m "Timestamp for tag: $COMMIT_TIME" \
            -m "Committer for tag: @$COMMITTER" \
            -m "" \
            -m "Commit message last commit:" \
            -m "---------------------------" \
            -m "$COMMIT_MSG"

      - name: "Tag the commit (releases only)"
        if: ${{ github.event_name == 'push' && github.ref_type == 'tag' }}
        env:
          REF_NAME: ${{ github.ref_name }}
        run: git tag "$REF_NAME" $(git rev-parse HEAD)

      - name: Push to target branch
        run: git push -u origin ${{ steps.set_vars.outputs.BRANCH }} --tags -v