name: AUR Publish

on:
  workflow_dispatch:
    inputs:
      tag:
        description: 'Release tag to publish (e.g. v0.3.0). Defaults to the tag the workflow was dispatched from.'
        required: false
        default: ''
      pkgrel:
        description: 'AUR pkgrel to publish. Use 2+ for packaging-only republishes of an existing tag.'
        required: false
        default: '1'
  push:
    tags:
      - 'v*'

jobs:
  aur-publish-fips:
    name: Publish fips to AUR
    runs-on: ubuntu-latest
    if: github.event_name == 'workflow_dispatch' || !contains(github.ref_name, '-')

    steps:
      - name: Resolve release tag
        id: tag
        env:
          INPUT_TAG: ${{ inputs.tag }}
          INPUT_PKGREL: ${{ inputs.pkgrel }}
        run: |
          set -euo pipefail
          TAG="${INPUT_TAG:-$GITHUB_REF_NAME}"
          PKGREL="${INPUT_PKGREL:-1}"
          case "$TAG" in
            v*) ;;
            *) echo "Tag '$TAG' does not look like a release tag (vX.Y.Z)"; exit 1 ;;
          esac
          case "$PKGREL" in
            ''|*[!0-9]*|0) echo "pkgrel '$PKGREL' must be a positive integer"; exit 1 ;;
          esac
          case "$TAG" in
            *-*)
              if [ "$GITHUB_EVENT_NAME" != "workflow_dispatch" ]; then
                echo "Pre-release tag '$TAG' — skipping AUR publish"
                exit 1
              fi
              ;;
          esac
          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
          echo "version=${TAG#v}" >> "$GITHUB_OUTPUT"
          echo "pkgrel=${PKGREL}" >> "$GITHUB_OUTPUT"

      - uses: actions/checkout@v4
        with:
          ref: ${{ steps.tag.outputs.tag }}

      - name: Patch PKGBUILD with pkgver, pkgrel, conflicts, and b2sums
        env:
          TAG: ${{ steps.tag.outputs.tag }}
          VERSION: ${{ steps.tag.outputs.version }}
          PKGREL: ${{ steps.tag.outputs.pkgrel }}
        run: |
          set -euo pipefail
          URL="https://github.com/${GITHUB_REPOSITORY}/archive/${TAG}.tar.gz"
          echo "Fetching $URL"
          SOURCE_SUM=$(curl -fsSL --retry 3 "$URL" | b2sum | awk '{print $1}')
          SYSUSERS_SUM=$(b2sum packaging/aur/fips.sysusers | awk '{print $1}')
          TMPFILES_SUM=$(b2sum packaging/aur/fips.tmpfiles | awk '{print $1}')
          for v in SOURCE_SUM SYSUSERS_SUM TMPFILES_SUM; do
            eval val=\$$v
            if [ -z "$val" ]; then echo "$v is empty"; exit 1; fi
          done
          sed -i "s/^pkgver=.*/pkgver=${VERSION}/" packaging/aur/PKGBUILD
          sed -i "s/^pkgrel=.*/pkgrel=${PKGREL}/" packaging/aur/PKGBUILD
          sed -i "s/^conflicts=.*/conflicts=('fips-git' 'fips-git-debug')/" packaging/aur/PKGBUILD
          sed -i "s/^options=.*/options=('!lto' '!debug')/" packaging/aur/PKGBUILD
          sed -i "s|^b2sums=('SKIP'.*|b2sums=('${SOURCE_SUM}'|" packaging/aur/PKGBUILD
          awk -v s1="$SYSUSERS_SUM" -v s2="$TMPFILES_SUM" '
            /^b2sums=\(/ { in_block=1; count=0 }
            in_block {
              count++
              if (count == 2) sub(/[a-f0-9]{128}/, s1)
              if (count == 3) sub(/[a-f0-9]{128}/, s2)
              if ($0 ~ /\)/) in_block=0
            }
            { print }
          ' packaging/aur/PKGBUILD > packaging/aur/PKGBUILD.new
          mv packaging/aur/PKGBUILD.new packaging/aur/PKGBUILD
          echo "Patched PKGBUILD:"
          grep -E "^(pkgver|pkgrel|conflicts|options)=" packaging/aur/PKGBUILD
          awk '/^b2sums=\(/,/\)$/' packaging/aur/PKGBUILD

      - name: Publish to AUR
        uses: KSXGitHub/github-actions-deploy-aur@v4.1.2
        with:
          pkgname: fips
          pkgbuild: packaging/aur/PKGBUILD
          updpkgsums: false
          assets: |
            packaging/aur/fips.sysusers
            packaging/aur/fips.tmpfiles
            packaging/aur/fips.install
          commit_username: ${{ github.repository_owner }}
          commit_email: ${{ secrets.AUR_EMAIL }}
          ssh_private_key: ${{ secrets.AUR_SSH_PRIVATE_KEY }}
          commit_message: "Update to ${{ steps.tag.outputs.tag }}"