sync-dependencies.yaml

---
name: Sync template dependencies

# yamllint disable-line rule:truthy
on:
  pull_request:
    branches:
      - main
  workflow_dispatch:

env:
  FILE_NAME: pyproject.toml.j2

jobs:
  update-dependencies:
    runs-on: ubuntu-latest
    if: ${{ github.head_ref == 'renovate/lock-file-maintenance' }}
    steps:
      - name: ⤵️ Checkout Code
        uses: actions/checkout@v4.1.0

      - name: 📝 Log the current file
        run: |
          cat template/${{ env.FILE_NAME }}

      - name: ⤵️ Fetch Gist content
        run: |
          wget -O gist_content.txt https://gist.github.com/${{ secrets.GIST_ID }}/raw
          cat gist_content.txt

      - name: 🚀 Replace lines in file
        run: |
          FILE=template/pyproject.toml.j2

          # Find the starting position (line number) of dev.dependencies
          START_LINE=$(grep -n "dev.dependencies" $FILE | cut -d: -f1)
          START_LINE=$(($START_LINE + 1))

          # Find the end position (line number) of the first blank line after start position
          END_LINE=$(awk -v start="$START_LINE" '/^$/ && NR > start {print NR-1; exit}' $FILE)

          # Replace the lines between start and end position
          awk -v start=$START_LINE -v end=$END_LINE '
            NR < start || NR > end {print}
            NR == start {
              while ((getline < "gist_content.txt") > 0) {
                if ($0) print
              }
            }
          ' $FILE > temp && mv temp $FILE

      - name: 📝 Log the updated file
        run: |
          cat template/${{ env.FILE_NAME }}

      - name: ⬆️ Upload artifact
        uses: actions/upload-artifact@v3.1.3
        with:
          name: ${{ env.FILE_NAME }}
          path: template/${{ env.FILE_NAME }}

  check-on-changes:
    needs: update-dependencies
    runs-on: ubuntu-latest
    outputs:
      changed: ${{ steps.check-changes.outputs.changed }}
    steps:
      - name: ⤵️ Checkout Code
        uses: actions/checkout@v4.1.0

      - name: ⤵️ Download artifact
        uses: actions/download-artifact@v3.0.2
        with:
          name: ${{ env.FILE_NAME }}
          path: template

      - name: 🔍 Check if file has changed
        id: check-changes
        run: |
          if git diff --quiet -- template/${{ env.FILE_NAME }}; then
            echo "No changes detected in ${{ env.FILE_NAME }}"
            echo "changed=false" >> $GITHUB_OUTPUT
          else
            git diff -- template/${{ env.FILE_NAME }}
            echo "Changes detected in ${{ env.FILE_NAME }}"
            echo "changed=true" >> $GITHUB_OUTPUT
          fi

  commit-and-push:
    needs: check-on-changes
    if: needs.check-on-changes.outputs.changed == 'true'
    runs-on: ubuntu-latest
    steps:
      - name: ⤵️ Checkout Code
        uses: actions/checkout@v4.1.0
        with:
          repository: ${{ github.event.repository.full_name }}
          ref: ${{ github.event.pull_request.head.ref }}

      - name: ⤵️ Download artifact
        uses: actions/download-artifact@v3.0.2
        with:
          name: ${{ env.FILE_NAME }}
          path: template

      - name: 🚀 Commit and push changes
        uses: EndBug/add-and-commit@v9.1.3
        with:
          add: "template/${{ env.FILE_NAME }}"
          message: "🔄 Sync dev dependencies from Github Gist"