name: Release

on:
  push:
    tags:
      - 'v*'

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        include:
          - arch: x86_64
            target: x86_64-unknown-linux-gnu
          - arch: aarch64
            target: aarch64-unknown-linux-gnu

    steps:
      - uses: actions/checkout@v4

      - name: Install system dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y libwayland-dev pkg-config

      - name: Install cross-compilation tools (aarch64 only)
        if: matrix.arch == 'aarch64'
        run: |
          sudo apt-get install -y gcc-aarch64-linux-gnu
          echo "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc" >> $GITHUB_ENV

      - name: Install Rust stable
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: ${{ matrix.target }}

      - name: Cache cargo registry
        uses: actions/cache@v3
        with:
          path: ~/.cargo/registry
          key: ${{ runner.os }}-${{ matrix.arch }}-cargo-${{ hashFiles('Cargo.lock') }}

      - name: Build
        run: cargo build --release --target ${{ matrix.target }}

      - name: Package
        run: |
          VERSION="${{ gitea.ref_name }}"
          TARBALL="gpupaper-${VERSION}-${{ matrix.arch }}.tar.gz"
          mkdir -p pkg
          cp target/${{ matrix.target }}/release/gpupaper pkg/
          cp -r shaders pkg/
          cp LICENSE pkg/
          tar -czf "${TARBALL}" -C pkg .
          sha256sum "${TARBALL}" > "${TARBALL}.sha256"
          echo "TARBALL=${TARBALL}" >> $GITHUB_ENV

      # ---------------------------------------------------------------------------
      # Upload to a PUBLIC Gitea repo used as a release mirror.
      # Set RELEASE_REPO in repository secrets to "user/public-releases-repo".
      # The token needs write access to that repo.
      # ---------------------------------------------------------------------------
      - name: Create release in mirror repo (if not already exists)
        if: matrix.arch == 'x86_64'
        run: |
          curl -sX POST \
            -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" \
            -H "Content-Type: application/json" \
            "${{ gitea.server_url }}/api/v1/repos/${{ secrets.RELEASE_REPO }}/releases" \
            -d "{\"tag_name\":\"${{ gitea.ref_name }}\",\"name\":\"${{ gitea.ref_name }}\",\"body\":\"\"}" \
            --fail-with-body || true   # ignore if release already exists

      - name: Get release ID from mirror repo
        run: |
          RELEASE_ID=$(curl -sX GET \
            -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" \
            "${{ gitea.server_url }}/api/v1/repos/${{ secrets.RELEASE_REPO }}/releases/tags/${{ gitea.ref_name }}" \
            | jq -r '.id')
          echo "RELEASE_ID=${RELEASE_ID}" >> $GITHUB_ENV

      - name: Upload binary asset
        run: |
          curl -sX POST \
            -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" \
            -H "Content-Type: application/octet-stream" \
            "${{ gitea.server_url }}/api/v1/repos/${{ secrets.RELEASE_REPO }}/releases/${{ env.RELEASE_ID }}/assets?name=${{ env.TARBALL }}" \
            --data-binary "@${{ env.TARBALL }}" --fail-with-body

      - name: Upload checksum
        run: |
          curl -sX POST \
            -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" \
            -H "Content-Type: text/plain" \
            "${{ gitea.server_url }}/api/v1/repos/${{ secrets.RELEASE_REPO }}/releases/${{ env.RELEASE_ID }}/assets?name=${{ env.TARBALL }}.sha256" \
            --data-binary "@${{ env.TARBALL }}.sha256" --fail-with-body