name: Build and Upload OS image

on:
  schedule:
    - cron: "0 21 * * 5" # At 21:00 on Friday.
    - cron: "10 21 * * 5" # At 21:10 on Friday.
    - cron: "20 21 * * 5" # At 21:20 on Friday.

jobs:
  stream:
    runs-on: ubuntu-22.04
    outputs:
      stream: ${{ steps.stream.outputs.stream }}
    steps:
      - name: Determine stream
        id: stream
        run: |
          case "${{ github.event.schedule }}" in
            "0 21 * * 5")
              echo "stream=debug" >> "$GITHUB_OUTPUT"
              ;;
            "10 21 * * 5")
              echo "stream=console" >> "$GITHUB_OUTPUT"
              ;;
            "20 21 * * 5")
              echo "stream=nightly" >> "$GITHUB_OUTPUT"
              ;;
            *)
              echo "::error::Unknown stream for schedule '${{ github.event.schedule }}'"
              exit 1
              ;;
          esac

  build-image:
    needs: stream
    uses: ./.github/workflows/build-os-image.yml
    permissions:
      id-token: write
      contents: read
      packages: read
    secrets: inherit
    with:
      stream: ${{ needs.stream.outputs.stream }}
      ref: main