name: LNM Backfill CI

on:
  workflow_dispatch:
    inputs:
      mongo_uri:
        description: 'Staging Mongo URI (read-only snapshot)'
        required: true
        type: string
      since_commit:
        description: 'Git commit to compare (default HEAD)'
        required: false
        type: string
      dry_run:
        description: 'Dry run (no writes)'
        required: false
        default: true
        type: boolean

jobs:
  lnm-backfill:
    runs-on: ubuntu-22.04
    env:
      DOTNET_VERSION: '10.0.100'
      ARTIFACT_DIR: ${{ github.workspace }}/.artifacts
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Task Pack offline bundle fixtures
        run: python3 scripts/packs/run-fixtures-check.sh
        with:
          fetch-depth: 0

      - name: Set up .NET SDK
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: ${{ env.DOTNET_VERSION }}
          include-prerelease: true

      - name: Restore
        run: dotnet restore src/Concelier/StellaOps.Concelier.Backfill/StellaOps.Concelier.Backfill.csproj

      - name: Run backfill (dry-run supported)
        env:
          STAGING_MONGO_URI: ${{ inputs.mongo_uri }}
        run: |
          mkdir -p $ARTIFACT_DIR
          EXTRA=()
          if [ "${{ inputs.dry_run }}" = "true" ]; then EXTRA+=("--dry-run"); fi
          dotnet run --project src/Concelier/StellaOps.Concelier.Backfill/StellaOps.Concelier.Backfill.csproj -- --mode=observations --batch-size=500 --max-conflicts=0 --mongo "$STAGING_MONGO_URI" "${EXTRA[@]}" | tee $ARTIFACT_DIR/backfill-observations.log
          dotnet run --project src/Concelier/StellaOps.Concelier.Backfill/StellaOps.Concelier.Backfill.csproj -- --mode=linksets --batch-size=500 --max-conflicts=0 --mongo "$STAGING_MONGO_URI" "${EXTRA[@]}" | tee $ARTIFACT_DIR/backfill-linksets.log

      - name: Validate counts
        env:
          STAGING_MONGO_URI: ${{ inputs.mongo_uri }}
        run: |
          STAGING_MONGO_URI="$STAGING_MONGO_URI" ops/devops/lnm/backfill-validation.sh

      - name: Upload artifacts
        uses: actions/upload-artifact@v4
        with:
          name: lnm-backfill-artifacts
          path: ${{ env.ARTIFACT_DIR }}