migration-order.yml

name: Migration Order
on:
  pull_request:
    paths:
      - packages/server/postgres/migrations/*.ts
jobs:
  migration-order:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout master
        uses: actions/checkout@v3
        with:
          ref: ${{ github.base_ref }}

      - name: Get newest migration on master
        run: |
          MAX_OLD_MIGRATION=$(ls packages/server/postgres/migrations | tail -n 1)
          echo MAX_OLD_MIGRATION=$MAX_OLD_MIGRATION >> $GITHUB_ENV

      - name: Checkout PR
        uses: actions/checkout@v3

      - name: Get new migrations
        id: new-migrations
        uses: tj-actions/changed-files@v41
        with:
          files: packages/server/postgres/migrations/*.ts

      - name: Check migration conflicts
        run: |
          for file in ${{ steps.new-migrations.outputs.added_files }}; do
            FILE_NAME=$(basename $file)
            if [[ "$FILE_NAME" < "${{ env.MAX_OLD_MIGRATION }}" ]]; then
              echo "$FILE_NAME predates ${{ env.MAX_OLD_MIGRATION}}. Please rename it"
              exit 1
            else
              echo "$FILE_NAME does not conflict with existing migrations on master"
            fi
          done