name: Build RPMs

on:
  push:
    paths:
      - "**.spec"
      - "build-order.txt"
      - "ci/**"
      - ".forgejo/workflows/**"
  workflow_dispatch:

jobs:
  build:
    runs-on: almalinux-10
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Install build tools
        run: |
          dnf install -y \
            rpm-build \
            rpmdevtools \
            mock \
            curl

      - name: Compute build plan
        id: plan
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            echo "Mode: manual trigger, full rebuild"
            python3 ci/build-plan.py > /tmp/build-plan.json
          elif [ "${{ github.event.before }}" = "0000000000000000000000000000000000000000" ]; then
            echo "Mode: new branch, full rebuild"
            python3 ci/build-plan.py > /tmp/build-plan.json
          else
            echo "Mode: incremental (diff ${{ github.event.before }}..${{ github.sha }})"
            python3 ci/build-plan.py "${{ github.event.before }}" "${{ github.sha }}" > /tmp/build-plan.json
          fi

          cat /tmp/build-plan.json | python3 -m json.tool
          TOTAL=$(python3 -c "import json; print(json.load(open('/tmp/build-plan.json'))['total'])")
          echo "total=${TOTAL}" >> "$GITHUB_OUTPUT"

          if [ "$TOTAL" = "0" ]; then
            echo "Nothing to build, exiting"
            exit 0
          fi

      - name: Add runner user to mock group
        if: steps.plan.outputs.total != '0'
        run: usermod -aG mock $(whoami) || true

      - name: Setup RPM build tree
        if: steps.plan.outputs.total != '0'
        run: rpmdev-setuptree

      - name: Configure mock chroot
        if: steps.plan.outputs.total != '0'
        run: |
          cat > /etc/mock/sonicde.cfg <<'MOCKEOF'
          include('/etc/mock/alma+epel-10-x86_64.cfg')
          config_opts['root'] = 'sonicde'
          config_opts['yum.conf'] += """
          [sonicde-rpm]
          name=SonicDE RPM
          baseurl=${{ github.server_url }}/api/packages/${{ github.repository_owner }}/rpm
          enabled=1
          gpgcheck=0

          [xlibre-xserver]
          name=Copr xlibre-xserver
          baseurl=https://download.copr.fedorainfracloud.org/results/@xlibre/xlibre-xserver/rhel+epel-10-$basearch/
          type=rpm-md
          skip_if_unavailable=True
          gpgcheck=1
          gpgkey=https://download.copr.fedorainfracloud.org/results/@xlibre/xlibre-xserver/pubkey.gpg
          repo_gpgcheck=0
          enabled=1
          """
          MOCKEOF

      - name: Initialize mock chroot
        if: steps.plan.outputs.total != '0'
        run: |
          mock --root sonicde --scrub=chroot || true
          mock --root sonicde --init
          mock --root sonicde --chroot 'groupadd -g 135 mock 2>/dev/null || true; useradd -u 135 -g 135 -d /builddir -s /bin/bash mockbuild 2>/dev/null || true'

      - name: Build packages tier by tier
        if: steps.plan.outputs.total != '0'
        env:
          FORGEJO_URL: ${{ github.server_url }}
          FORGEJO_OWNER: ${{ github.repository_owner }}
          FORGEJO_TOKEN: ${{ secrets.PACKAGE_TOKEN }}
        run: |
          echo "Building ${{ steps.plan.outputs.total }} packages..."
          bash ci/build-tiered.sh /tmp/build-plan.json

      - name: Clean up
        if: always()
        run: |
          rm -rf ~/mock-results ~/rpmbuild/SRPMS/*