name: Publish prebuilt linux-raveos kernel

on:
  workflow_dispatch:

concurrency:
  group: raveos-repo-publish
  cancel-in-progress: false

jobs:
  publish:
    runs-on: iso-builder

    steps:
      - name: Check prebuilt packages
        run: |
          set -euo pipefail
          SRC="$HOME/kernel-kesz"
          ls "$SRC"/linux-*.pkg.tar.zst
          for pkg in "$SRC"/linux-*.pkg.tar.zst; do
            bsdtar -xOf "$pkg" .PKGINFO | grep -E '^(pkgname|pkgver) ='
          done
          ( cd "$SRC" && sha256sum -c SHA256SUMS )

      - name: Fetch core repo via rsync
        run: |
          set -euo pipefail
          RSYNC_SSH="ssh -p 2222 -i $HOME/.ssh/vps_backup_key -o StrictHostKeyChecking=accept-new -o BatchMode=yes"
          rm -rf /tmp/raveos-core-repo /tmp/builtpkgs
          mkdir -p /tmp/raveos-core-repo/x86_64 /tmp/builtpkgs
          rsync -az -e "$RSYNC_SSH" \
            root@10.66.66.1:/root/docker/repo/repo/x86_64/ /tmp/raveos-core-repo/x86_64/
          test -f /tmp/raveos-core-repo/x86_64/raveos-core-repo.db.tar.xz
          cp -v "$HOME"/kernel-kesz/linux-*.pkg.tar.zst /tmp/builtpkgs/

      - name: Import GPG signing key
        env:
          GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
        run: |
          set -euo pipefail
          export GNUPGHOME=/tmp/raveos-gnupg
          rm -rf "$GNUPGHOME"
          mkdir -m 700 "$GNUPGHOME"
          printf '%s' "$GPG_PRIVATE_KEY" | base64 -d | gpg --batch --import

      - name: Sign packages
        env:
          GPG_PASSPHRASE: ${{ secrets.GPG_PRIVATE_KEY_PASSPHRASE }}
        run: |
          set -euo pipefail
          export GNUPGHOME=/tmp/raveos-gnupg
          PASSFILE=$(mktemp)
          chmod 600 "$PASSFILE"
          trap 'rm -f "$PASSFILE"' EXIT
          printf '%s' "$GPG_PASSPHRASE" > "$PASSFILE"
          for pkg in /tmp/builtpkgs/*.pkg.tar.zst; do
            gpg --batch --yes --pinentry-mode loopback \
                --passphrase-file "$PASSFILE" \
                --local-user 25C7668F1235F5664F037671BDB2A9CE6EBFF113 \
                --detach-sign --no-armor "$pkg"
          done

      - name: Update repo database and sync to VPS
        env:
          GPG_PASSPHRASE: ${{ secrets.GPG_PRIVATE_KEY_PASSPHRASE }}
        run: |
          set -euo pipefail
          CORE="/tmp/raveos-core-repo/x86_64"
          for pkg in /tmp/builtpkgs/*.pkg.tar.zst; do
            PKGNAME=$(bsdtar -xOf "$pkg" .PKGINFO | awk -F' = ' '/^pkgname =/{print $2; exit}')
            rm -f "$CORE/${PKGNAME}-"[0-9]*.pkg.tar.zst* 2>/dev/null || true
            cp -v "$pkg" "$pkg.sig" "$CORE/"
          done

          export GNUPGHOME=/tmp/raveos-gnupg
          cd "$CORE"
          repo-add raveos-core-repo.db.tar.xz *.pkg.tar.zst

          PASSFILE=$(mktemp)
          chmod 600 "$PASSFILE"
          trap 'rm -f "$PASSFILE"' EXIT
          printf '%s' "$GPG_PASSPHRASE" > "$PASSFILE"
          for f in raveos-core-repo.db.tar.xz raveos-core-repo.files.tar.xz; do
            gpg --batch --yes --pinentry-mode loopback \
                --passphrase-file "$PASSFILE" \
                --local-user 25C7668F1235F5664F037671BDB2A9CE6EBFF113 \
                --detach-sign --no-armor -o "$f.sig" "$f"
          done
          ln -sf raveos-core-repo.db.tar.xz.sig raveos-core-repo.db.sig
          ln -sf raveos-core-repo.files.tar.xz.sig raveos-core-repo.files.sig

          RSYNC_SSH="ssh -p 2222 -i $HOME/.ssh/vps_backup_key -o StrictHostKeyChecking=accept-new -o BatchMode=yes"
          rsync -az --delete -e "$RSYNC_SSH" \
            "$CORE/" root@10.66.66.1:/root/docker/repo/repo/x86_64/

          rm -rf "$HOME/kernel-kesz"
          echo "::notice title=Kernel published::prebuilt linux-raveos published"

      - name: Cleanup
        if: always()
        run: |
          gpgconf --homedir /tmp/raveos-gnupg --kill gpg-agent || true
          rm -rf /tmp/raveos-gnupg /tmp/builtpkgs /tmp/raveos-core-repo || true