name: Generate POT PR

on:
  workflow_dispatch:
  push:
    branches:
      - main

jobs:
  generate-pot:
    name: Generate POT PR
    if: github.repository == ${{ github.event.repository.full_name }}
    permissions:
      contents: write
      pull-requests: write
    runs-on: ubuntu-latest
    steps:
      - name: Check out source code
        uses: actions/checkout@v4

      - name: Set up PHP environment
        uses: shivammathur/setup-php@v2
        with:
          php-version: "7.4"

      - name: Setup WP-CLI
        uses: godaddy-wordpress/setup-wp-cli@1

      - name: Configure git user
        run: |
          git config user.name ${{ github.actor }}
          git config user.email ${{ github.actor }}@users.noreply.github.com

      - name: Check if remote branch exists
        run: echo "REMOTE_BRANCH_EXISTS=$([[ -z $(git ls-remote --heads origin generate-pot) ]] && echo "0" || echo "1")" >> $GITHUB_ENV

      - name: Create branch to base pull request on
        if: env.REMOTE_BRANCH_EXISTS == 0
        run: |
          git checkout -b generate-pot

      - name: Fetch existing branch to add commits to
        if: env.REMOTE_BRANCH_EXISTS == 1
        run: |
          git fetch --all --prune
          git checkout generate-pot
          git pull --no-rebase

      - name: Generate POT
        run: |
          wp i18n make-pot . "./languages/fair.pot" --headers='{"Report-Msgid-Bugs-To":"https://github.com/${{ github.event.repository.full_name }}/issues"}'

      - name: Check if there are changes
        run: echo "CHANGES_DETECTED=$([[ -z $(git status --porcelain) ]] && echo "0" || echo "1")" >> $GITHUB_ENV

      - name: Commit changes
        if: env.CHANGES_DETECTED == 1
        run: |
          git add "./languages/fair.pot"
          git commit -s -m "Generate POT - $(date +'%Y-%m-%d')"
          git push origin generate-pot

      - name: Create pull request
        if: env.CHANGES_DETECTED == 1 && env.REMOTE_BRANCH_EXISTS == 0
        run: gh pr create --base ${BRANCH_NAME} --head generate-pot --title "Generate POT - $(date +'%Y-%m-%d')" --body "Automated PR"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          BRANCH_NAME: ${{ github.head_ref || github.ref_name }}