name: Label translation PRs

on:
  pull_request_target:
    types: [opened, synchronize, reopened]

permissions:
  contents: read
  pull-requests: write

jobs:
  label-translation:
    runs-on: ubuntu-latest
    steps:
      - name: Fetch PR diff
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh api \
            repos/${{ github.repository }}/pulls/${{ github.event.pull_request.number }} \
            --header "Accept: application/vnd.github.v3.diff" > pr.diff

      - name: Detect ai_playerbot_texts inserts
        id: detect
        run: |
          if grep -E '^\+.*INSERT[[:space:]]+INTO[[:space:]]+`?ai_playerbot_texts`?' pr.diff; then
            echo "has_translation=true" >> "$GITHUB_OUTPUT"
          else
            echo "has_translation=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Add label
        if: steps.detect.outputs.has_translation == 'true'
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh pr edit ${{ github.event.pull_request.number }} \
            --add-label "Added translation"