name: Release

on:
  push:
    tags:
      - "v*"

permissions:
  contents: write

jobs:
  notes:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Prepare Release Notes
        shell: bash
        run: |
          set -euo pipefail
          tag="${GITHUB_REF_NAME#v}"
          notes_file=".github/release-notes.md"
          if grep -q "^## \\[${tag}\\]" CHANGELOG.md; then
            awk -v ver="$tag" '
              $0 ~ "^## \\[" ver "\\]" {found=1; next}
              found && $0 ~ "^## \\[" {exit}
              found {print}
            ' CHANGELOG.md | sed -e '${/^$/d;}' > "$notes_file"
          else
            echo "No CHANGELOG section for $tag." > "$notes_file"
            git log -1 --pretty=format:"%s%n%n%b" >> "$notes_file"
          fi

      - name: Upload Notes Artifact
        uses: actions/upload-artifact@v4
        with:
          name: release-notes
          path: .github/release-notes.md

  build:
    strategy:
      fail-fast: false
      matrix:
        include:
          # GNU/Linux
          # x86_64
          - os: ubuntu-latest
            target: x86_64-unknown-linux-gnu
            asset_name: dcr-x86_64-unknown-linux-gnu

          # ARM64
          - os: ubuntu-latest
            target: aarch64-unknown-linux-gnu
            asset_name: dcr-aarch64-unknown-linux-gnu

          # Musl/Linux
          # x86_64
          - os: ubuntu-latest
            target: x86_64-unknown-linux-musl
            asset_name: dcr-x86_64-unknown-linux-musl

          # ARM64
          - os: ubuntu-latest
            target: aarch64-unknown-linux-musl
            asset_name: dcr-aarch64-unknown-linux-musl

          # MacOS
          # x86_64 (Intel Mac, macOS 10.12+)
          - os: macos-15-intel
            target: x86_64-apple-darwin
            asset_name: dcr-x86_64-apple-darwin

          # ARM64 (Apple Silicon Mac, macOS 11+)
          - os: macos-latest
            target: aarch64-apple-darwin
            asset_name: dcr-aarch64-apple-darwin

          # Windows MSVC
          # x86_64
          - os: windows-latest
            target: x86_64-pc-windows-msvc
            asset_name: dcr-x86_64-pc-windows-msvc.exe

          # ARM64
          - os: windows-latest
            target: aarch64-pc-windows-msvc
            asset_name: dcr-aarch64-pc-windows-msvc.exe

          # Windows GNU
          # x86_64
          - os: windows-latest
            target: x86_64-pc-windows-gnu
            asset_name: dcr-x86_64-pc-windows-gnu.exe

          # Windows LLVM
          # x86_64
          - os: windows-latest
            target: x86_64-pc-windows-gnullvm
            asset_name: dcr-x86_64-pc-windows-gnullvm.exe


          # ARM64
          - os: windows-latest
            target: aarch64-pc-windows-gnullvm
            asset_name: dcr-aarch64-pc-windows-gnullvm.exe

    runs-on: ${{ matrix.os }}
    needs: notes
    steps:
      - uses: actions/checkout@v4
      - name: Download Release Notes
        uses: actions/download-artifact@v4
        with:
          name: release-notes
          path: .github

      - name: Install Linux Cross Compilation Tools
        if: runner.os == 'Linux'
        run: |
          sudo apt-get update
          sudo apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu musl-tools
          case "${{ matrix.target }}" in
            aarch64-unknown-linux-gnu)
              echo "CC_aarch64-unknown-linux-gnu=aarch64-linux-gnu-gcc" >> $GITHUB_ENV
              echo "AR_aarch64-unknown-linux-gnu=aarch64-linux-gnu-ar" >> $GITHUB_ENV
              ;;
            x86_64-unknown-linux-musl)
              echo "CC_x86_64-unknown-linux-musl=x86_64-linux-musl-gcc" >> $GITHUB_ENV
              ;;
            aarch64-unknown-linux-musl)
              curl -L https://musl.cc/aarch64-linux-musl-cross.tgz -o /tmp/musl-aarch64.tgz
              sudo tar xzf /tmp/musl-aarch64.tgz -C /opt
              echo "/opt/aarch64-linux-musl-cross/bin" >> $GITHUB_PATH
              echo "CC_aarch64-unknown-linux-musl=aarch64-linux-musl-gcc" >> $GITHUB_ENV
              echo "AR_aarch64-unknown-linux-musl=aarch64-linux-musl-ar" >> $GITHUB_ENV
              ;;
          esac

      - name: Setup LLVM + MinGW (gnullvm)
        if: contains(matrix.target, 'gnullvm')
        shell: pwsh
        run: |
          choco install llvm mingw -y --no-progress
          echo "C:\Program Files\LLVM\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append

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

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

      - name: Prepare Artifact (Unix)
        if: runner.os != 'Windows'
        shell: bash
        run: |
          cp target/${{ matrix.target }}/release/dcr ${{ matrix.asset_name }}

      - name: Prepare Artifact (Windows)
        if: runner.os == 'Windows'
        shell: pwsh
        run: |
          Copy-Item "target/${{ matrix.target }}/release/dcr.exe" "${{ matrix.asset_name }}"

      - name: Upload Release Asset
        uses: softprops/action-gh-release@v2
        with:
          files: ${{ matrix.asset_name }}
          body_path: .github/release-notes.md