name: Release

on:
  push:
    tags:
      - "v*"
  workflow_dispatch:
    inputs:
      prerelease:
        description: "Mark the GitHub release as a prerelease"
        required: false
        default: "true"
        type: choice
        options: ["true", "false"]

permissions:
  contents: write

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    name: build ${{ matrix.target }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            target: linux-x86_64
            binary: geth
          - os: macos-latest
            target: macos
            binary: geth
          - os: windows-latest
            target: windows-x86_64
            binary: geth.exe
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Cache Cargo
        uses: Swatinem/rust-cache@v2

      - name: Build release binary
        run: cargo build --release -p geth

      - name: Package Unix artifact
        if: runner.os != 'Windows'
        shell: bash
        run: |
          set -euo pipefail
          version="${GITHUB_REF_NAME:-manual}"
          pkg="geth-${version}-${{ matrix.target }}"
          mkdir -p "${pkg}" dist
          cp "target/release/${{ matrix.binary }}" "${pkg}/"
          cp README.md "${pkg}/"
          tar -czf "dist/${pkg}.tar.gz" "${pkg}"

      - name: Package Windows artifact
        if: runner.os == 'Windows'
        shell: pwsh
        run: |
          $version = if ($env:GITHUB_REF_NAME) { $env:GITHUB_REF_NAME } else { "manual" }
          $pkg = "geth-$version-${{ matrix.target }}"
          New-Item -ItemType Directory -Force -Path $pkg, dist | Out-Null
          Copy-Item "target/release/${{ matrix.binary }}" "$pkg/"
          Copy-Item README.md "$pkg/"
          Compress-Archive -Path "$pkg/*" -DestinationPath "dist/$pkg.zip" -Force

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: geth-${{ matrix.target }}
          path: dist/*
          if-no-files-found: error

  github-release:
    name: publish GitHub release
    runs-on: ubuntu-latest
    needs: build
    if: startsWith(github.ref, 'refs/tags/') || github.event_name == 'workflow_dispatch'
    steps:
      - name: Download artifacts
        uses: actions/download-artifact@v4
        with:
          path: dist
          merge-multiple: true

      - name: Publish release
        uses: softprops/action-gh-release@v2
        with:
          files: dist/*
          prerelease: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.prerelease == 'true' }}
          generate_release_notes: true