update-build-files.yml

name: Update WordPress i18n build files

on:
  schedule:
    - cron: "0 0 * * *"  # Funciona todos os dias à meia-noite.

  # Allows you to run this workflow manually from the Actions tab.
  workflow_dispatch:

env:
  OWNER: ${{ github.repository_owner }}
  REPO: ${{ github.repository }}
  TOKEN: ${{ secrets.GITHUB_TOKEN }}

permissions:
  contents: write
  pull-requests: write

jobs:

  check-file-updates:
    name: Check for file updates
    runs-on: ubuntu-latest

    outputs:
      files_changed: ${{ steps.compare-files.outputs.files_changed }}

    steps:

    - name: Checkout english branch
      uses: actions/checkout@v4
      with:
        ref: english
        fetch-depth: 0

    - name: Checkout WordPress/wordpress-develop
      uses: actions/checkout@v4
      with:
        repository: WordPress/wordpress-develop
        fetch-depth: 1
        path: wordpress-develop

    - name: Copy WordPress build files
      run: |
        mkdir downloads
        cp --force wordpress-develop/src/readme.html downloads/readme.html
        cp --force wordpress-develop/wp-config-sample.php downloads/wp-config-sample.php

    - name: Check if source files have changed
      id: compare-files
      run: |
        if ! cmp -s downloads/readme.html en_US/readme.html || ! cmp -s downloads/wp-config-sample.php en_US/wp-config-sample.php; then
          echo "The build files have been updated!"
          echo "files_changed=true" >> $GITHUB_OUTPUT
        fi

    - name: Save workspace files to artifact
      uses: actions/upload-artifact@v4
      id: upload-artifact
      if: steps.compare-files.outputs.files_changed == 'true'
      with:
        name: workspace-files
        path: downloads/

    - name: Steps debug info
      run: |
        echo "Steps: ${{ toJson(steps) }}"

  commit-updated-files:
    name: Commit updated files
    runs-on: ubuntu-latest
    needs: check-file-updates
    if: ${{ needs.check-file-updates.outputs.files_changed == 'true' }}

    steps:

    - name: Checkout english branch
      uses: actions/checkout@v4
      with:
        ref: english
        fetch-depth: 0

    - name: Get workspace files from artifact
      uses: actions/download-artifact@v4
      id: download-artifact
      with:
        name: workspace-files
        path: en_US

    - name: Commit updated source files
      uses: stefanzweifel/git-auto-commit-action@v5
      with:
        commit_message: Update english files according to remote changes in WordPress 'trunk'

    - name: Steps debug info
      run: |
        echo "Steps: ${{ toJson(steps) }}"

  create-pull-request:
    name: Create Pull Request
    runs-on: ubuntu-latest
    needs: commit-updated-files
    if: ${{ needs.commit-updated-files.result == 'success' }}

    steps:

      - name: Check if Pull Request exists
        id: check_pr
        env:
          GH_TOKEN: "${{ github.token }}"
        run: |
          PR_NUMBER="$(gh pr list --head "${OWNER}:english" --json "number" --jq '.[0]."number"')"
          if [ -n "$PR_NUMBER" ]; then
            echo "PR number found: $PR_NUMBER"
            echo "pr_number=$PR_NUMBER" >> $GITHUB_OUTPUT
          else
            echo "No pull request found."
          fi

      - name: Create Pull Request
        id: create_pr
        if: steps.check_pr.outputs.pr_number == ''
        env:
          TITLE: "Actualizar ficheiros originais em inglês"
          BODY: "Actualização automática para submeter alterações do branch 'english' para o 'main'."
          GH_TOKEN: "${{ github.token }}"
        run: |
          gh pr create --title "${TITLE}" --body "${BODY}" --head "english" --base "main"

      - name: Steps debug info
        run: |
          echo "Steps: ${{ toJson(steps) }}"