.github/workflows/release-go-binding.yml

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# to you under the Apache License, Version 2.0 (the
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name: Release Go Binding

on:
  push:
    tags:
      # Trigger this workflow when tag follows the versioning format: v<major>.<minor>.<patch> OR v<major>.<minor>.<patch>-rc<release_candidate>
      # Example valid tags: v0.4.0, v0.4.0-rc1
      - "v[0-9]+.[0-9]+.[0-9]+"
      - "v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+"
  workflow_dispatch:
    inputs:
      version:
        description: Release version, for example v0.1.0 or v0.1.0-rc1
        required: true
        type: string
      source_ref:
        description: Rust release baseline ref, for example main, v0.1.0-rc1, or a commit SHA
        required: true
        type: string

permissions:
  contents: write

jobs:
  validate:
    runs-on: ubuntu-latest
    outputs:
      version: ${{ steps.meta.outputs.version }}
      source_ref: ${{ steps.meta.outputs.source_ref }}
      tag: ${{ steps.meta.outputs.tag }}
      source_sha: ${{ steps.meta.outputs.source_sha }}
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0
          ref: ${{ inputs.source_ref || github.sha }}

      - name: Validate release version and tag
        id: meta
        shell: bash
        run: |
          event_name='${{ github.event_name }}'
          version=''
          source_ref=''

          if [[ "$event_name" == "workflow_dispatch" ]]; then
            version='${{ inputs.version }}'
            source_ref='${{ inputs.source_ref }}'
          else
            tag_name='${{ github.ref_name }}'
            source_ref='${{ github.sha }}'
            version="$tag_name"
          fi

          if [[ ! "$version" =~ ^v[0-9]+\.[0-9]+\.[0-9]+([-.][0-9A-Za-z.-]+)?$ ]]; then
            echo "invalid version: $version; expected vX.Y.Z or vX.Y.Z-rc.N" >&2
            exit 1
          fi
          if [[ -z "$source_ref" ]]; then
            echo "source_ref must not be empty" >&2
            exit 1
          fi

          git rev-parse --verify "$source_ref^{commit}" >/dev/null 2>&1 || {
            echo "source_ref does not resolve to a commit: $source_ref" >&2
            exit 1
          }

          tag="bindings/go/$version"
          if git rev-parse "$tag" >/dev/null 2>&1; then
            echo "tag already exists: $tag" >&2
            exit 1
          fi

          echo "tag=$tag" >> "$GITHUB_OUTPUT"
          echo "version=$version" >> "$GITHUB_OUTPUT"
          echo "source_ref=$source_ref" >> "$GITHUB_OUTPUT"
          echo "source_sha=$(git rev-parse "$source_ref^{commit}")" >> "$GITHUB_OUTPUT"

  build:
    needs: validate
    runs-on: ${{ matrix.runner }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - runner: ubuntu-latest
            expected_file: libpaimon_c.linux.amd64.so.zst
          - runner: ubuntu-24.04-arm
            expected_file: libpaimon_c.linux.arm64.so.zst
          - runner: macos-15-intel
            expected_file: libpaimon_c.darwin.amd64.dylib.zst
          - runner: macos-14
            expected_file: libpaimon_c.darwin.arm64.dylib.zst

    steps:
      - uses: actions/checkout@v6
        with:
          ref: ${{ needs.validate.outputs.source_sha }}

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

      - name: Cache Rust build outputs
        uses: Swatinem/rust-cache@v2

      - name: Install zstd on Linux
        if: runner.os == 'Linux'
        run: sudo apt-get update && sudo apt-get install -y zstd

      - name: Install zstd on macOS
        if: runner.os == 'macOS'
        run: brew install zstd

      - name: Build embedded shared library
        working-directory: bindings/go
        run: make build

      - name: Verify packaged library
        working-directory: bindings/go
        shell: bash
        run: |
          test -s '${{ matrix.expected_file }}'

      - name: Upload packaged library
        uses: actions/upload-artifact@v7
        with:
          name: ${{ matrix.expected_file }}
          path: bindings/go/${{ matrix.expected_file }}
          if-no-files-found: error

  publish:
    needs:
      - validate
      - build
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0
          ref: ${{ needs.validate.outputs.source_sha }}

      - name: Download packaged libraries
        uses: actions/download-artifact@v8
        with:
          path: bindings/go
          merge-multiple: true

      - name: Verify embedded assets
        working-directory: bindings/go
        shell: bash
        run: |
          for file in \
            libpaimon_c.linux.amd64.so.zst \
            libpaimon_c.linux.arm64.so.zst \
            libpaimon_c.darwin.amd64.dylib.zst \
            libpaimon_c.darwin.arm64.dylib.zst
          do
            test -s "$file"
          done

      - name: Create release tag commit
        env:
          TAG: ${{ needs.validate.outputs.tag }}
          VERSION: ${{ needs.validate.outputs.version }}
          SOURCE_REF: ${{ needs.validate.outputs.source_ref }}
          SOURCE_SHA: ${{ needs.validate.outputs.source_sha }}
        shell: bash
        run: |
          git config user.name 'github-actions[bot]'
          git config user.email '41898282+github-actions[bot]@users.noreply.github.com'

          git add bindings/go/libpaimon_c.*.zst

          if ! git diff --cached --quiet; then
            git commit -m "bindings/go: release ${VERSION} (from ${SOURCE_REF}@${SOURCE_SHA})"
          fi

          git tag -a "$TAG" -m "Release Go binding ${VERSION} from ${SOURCE_REF}@${SOURCE_SHA}"
          git push origin "refs/tags/$TAG"

      - name: Create GitHub release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ needs.validate.outputs.tag }}
          generate_release_notes: true
          files: |
            bindings/go/libpaimon_c.linux.amd64.so.zst
            bindings/go/libpaimon_c.linux.arm64.so.zst
            bindings/go/libpaimon_c.darwin.amd64.dylib.zst
            bindings/go/libpaimon_c.darwin.arm64.dylib.zst