name: Auto-update AUR

on:
  push:
    branches: [ main ]
  workflow_dispatch:

jobs:
  update-aur:
    runs-on: docker

    container:
      image: archlinux:latest

    steps:
      - name: Install Arch build tools
        run: |
          pacman -Sy --noconfirm git base-devel nodejs npm openssh

      - name: Checkout AUR repo
        uses: actions/checkout@v4

      - name: Set up Git identity
        run: |
          git config --global user.name "creations"
          git config --global user.email "aur@creations.works"

      - name: Set up SSH for AUR
        run: |
          mkdir -p ~/.ssh
          echo "${{ secrets.AUR_SSH_PRIVATE_KEY }}" > ~/.ssh/aur
          chmod 600 ~/.ssh/aur
          cat >> ~/.ssh/config <<EOF
          Host aur.archlinux.org
              User aur
              IdentityFile ~/.ssh/aur
              IdentitiesOnly yes
              StrictHostKeyChecking no
          EOF

      - name: Sync with AUR master before changes
        run: |
          git remote add aur ssh://aur@aur.archlinux.org/navithingy-git.git
          git fetch aur master
          git rebase aur/master

      - name: Clone upstream NaviThingy and compute pkgver
        run: |
          git clone --depth=1 https://github.com/vMohammad24/NaviThingy.git NaviThingy
          cd NaviThingy
          tag=$(git describe --tags --abbrev=0 | sed 's/^NaviThingy//' | tr -d 'v')
          rev=$(git rev-list --count HEAD)
          commit=$(git rev-parse --short HEAD)
          echo "pkgver=${tag}.r${rev}.${commit}" >> $GITHUB_ENV

      - name: Patch PKGBUILD and regenerate .SRCINFO
        run: |
          echo "Using pkgver=${{ env.pkgver }}"
          sed -i "s/^pkgver=.*/pkgver=${{ env.pkgver }}/" PKGBUILD

          useradd -m builduser
          chown -R builduser .

          git config --global --add safe.directory "$PWD"

          su builduser -c "makepkg --printsrcinfo > .SRCINFO"

      - name: Push to AUR
        run: |
          git add PKGBUILD .SRCINFO
          if git diff --cached --quiet; then
            echo "No changes to commit."
            exit 0
          fi
          git commit -m "Update to ${{ env.pkgver }}"
          git push aur HEAD:master