changed-packages.yml

# Turbo dry run to determine which apps have changed between the latest commit and target or previous commit
# For PR:s this comparison is done against the main branch
name: 'Determine changed packages'

on:
  workflow_call:
    outputs:
      changed_packages:
        description: 'Stringified JSON array of changed packages in this changeset'
        value: ${{ jobs.dry-run.outputs.changed_packages }}
      admin_changed:
        description: 'Indicates if the Admin UI or its dependencies have changed'
        value: ${{ jobs.dry-run.outputs.admin_changed }}
      ui_changed:
        description: 'Indicates if the UI or its dependencies have changed'
        value: ${{ jobs.dry-run.outputs.ui_changed }}

jobs:
  dry-run:
    runs-on: ubuntu-latest
    env:
      # TODO why is this named so? why isn't it just GIT_HASH?
      TURBO_REF_FILTER: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.sha || github.event.before }}
    outputs:
      changed_packages: ${{ steps.output-changed-packages.outputs.changed_packages }}
      admin_changed: ${{ steps.admin-changed.outputs.result }}
      ui_changed: ${{ steps.ui-changed.outputs.result }}

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Changeset
        id: changeset
        run: |
          echo 'Generating a changeset for ' $TURBO_REF_FILTER
          echo 'result<<CHANGESET_DELIMITER' >> $GITHUB_OUTPUT
          # TODO why is there a global-deps flag? removing it didn't fix the issue
          # FIXME this part is probably broken (the next step fails on CI)
          echo "$(npx -y turbo build --dry-run=json --filter=...[$TURBO_REF_FILTER]  --global-deps=.github/*)" >> $GITHUB_OUTPUT
          echo 'CHANGESET_DELIMITER' >> $GITHUB_OUTPUT

      - name: Output changed packages
        id: output-changed-packages
        run: |
          echo 'Saving the changeset for ' $TURBO_REF_FILTER
          echo 'changed_packages<<CHANGED_PACKAGES_DELIMITER' >> $GITHUB_OUTPUT
          echo "${{ toJSON(fromJSON(steps.changeset.outputs.result).packages) }}" >> $GITHUB_OUTPUT
          echo 'CHANGED_PACKAGES_DELIMITER' >> $GITHUB_OUTPUT

      - name: Did the Admin UI or its dependencies change?
        id: admin-changed
        if: ${{ contains(fromJSON(steps.changeset.outputs.result).packages, 'admin-ui') }}
        run: echo "result=true" >> $GITHUB_OUTPUT

      - name: Did the UI or its dependencies change?
        id: ui-changed
        if: ${{ contains(fromJSON(steps.changeset.outputs.result).packages, 'ui') }}
        run: echo "result=true" >> $GITHUB_OUTPUT