update-generated-files.yml

name: Update generated files

on:
  push:
    branches:
      - main

env:
  BRANCH_NAME: sync-generated-files

jobs:
  update_genereated_files:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: 'npm'

      - name: Build
        run: |
          npm ci
          npm run build -ws

      - name: Check for changes
        id: changes
        run: |
          changes=$(git status --porcelain)
          # see https://unix.stackexchange.com/a/509498
          echo $changes | grep . && echo "Changes detected" || echo "No changes"
          echo ::set-output name=changes::"$changes"

      - name: Check branch exists
        id: branchExists
        if: steps.changes.outputs.changes
        run: |
          exists=$(git ls-remote --heads origin $BRANCH_NAME)
          echo $exists | grep . && echo "Branch '$BRANCH_NAME' already exists on remote" || echo "Branch does not exists in remote"
          echo ::set-output name=exists::"$exists"

      - name: Create pull request
        if: ${{ steps.changes.outputs.changes && !steps.branchExists.outputs.exists }}
        run: |
          git status
          git config user.name github-actions
          git config user.email github-actions@github.com
          git add .
          git checkout -b $BRANCH_NAME
          git commit -m "chore: sync generated files"
          git push origin $BRANCH_NAME
          gh pr create --base main --head $BRANCH_NAME --title "chore: sync generated files" --body "This PR was opened by a robot :robot: :tada:."
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Update pull request
        if: ${{ steps.changes.outputs.changes && steps.branchExists.outputs.exists }}
        run: |
          git reset HEAD --hard
          git checkout $BRANCH_NAME
          npm run build
          git status
          git config user.name github-actions
          git config user.email github-actions@github.com
          git add .
          git commit -m "chore: sync generated files"
          git push origin $BRANCH_NAME
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}