name: Release

on:
  push:
    tags:
      - "v*"

permissions:
  contents: read

concurrency:
  group: release-${{ github.ref }}
  cancel-in-progress: false

jobs:
  test:
    name: Go checks
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          cache: true

      - name: go vet
        run: go vet ./...

      - name: go test
        run: go test -race -count=1 ./...

      - name: go build
        run: go build ./...

  build:
    name: Build ${{ matrix.artifact }}
    needs: test
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - artifact: limen-linux-amd64
            goos: linux
            goarch: amd64
          - artifact: limen-linux-arm64
            goos: linux
            goarch: arm64
          - artifact: limen-macos-amd64
            goos: darwin
            goarch: amd64
          - artifact: limen-macos-arm64
            goos: darwin
            goarch: arm64
    steps:
      - uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          cache: true

      - name: Resolve version
        id: version
        run: |
          VERSION="${GITHUB_REF_NAME#v}"
          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"

      - name: Build binary
        env:
          CGO_ENABLED: "0"
          GOOS: ${{ matrix.goos }}
          GOARCH: ${{ matrix.goarch }}
          VERSION: ${{ steps.version.outputs.version }}
        run: |
          mkdir -p dist
          go build -trimpath -ldflags "-s -w -X main.version=${VERSION}" -o "dist/${{ matrix.artifact }}" .

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.artifact }}
          path: dist/${{ matrix.artifact }}

  release:
    name: Publish GitHub release
    needs: build
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with:
          path: artifacts

      - name: Prepare release assets
        run: |
          mkdir -p release
          find artifacts -type f -exec cp {} release/ \;
          cd release
          shasum -a 256 ./limen-* > checksums.txt
          ls -la

      - name: Create release
        uses: softprops/action-gh-release@v2
        with:
          files: release/*
          generate_release_notes: true

  update-homebrew:
    name: Update Homebrew tap
    needs: release
    runs-on: ubuntu-latest
    env:
      HOMEBREW_TAP_TOKEN_SET: ${{ secrets.HOMEBREW_TAP_TOKEN != '' }}
    steps:
      - name: Verify Homebrew tap token
        run: |
          if [ "${HOMEBREW_TAP_TOKEN_SET}" != "true" ]; then
            echo "::error::HOMEBREW_TAP_TOKEN repo secret is required to update KofTwentyTwo/homebrew-tap."
            exit 1
          fi

      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with:
          path: artifacts

      - name: Checkout Homebrew tap
        uses: actions/checkout@v4
        with:
          repository: KofTwentyTwo/homebrew-tap
          token: ${{ secrets.HOMEBREW_TAP_TOKEN }}
          path: homebrew-tap

      - name: Update formula
        env:
          TAG_NAME: ${{ github.ref_name }}
        run: |
          VERSION="${TAG_NAME#v}"
          SHA_MACOS_ARM64=$(shasum -a 256 artifacts/limen-macos-arm64/limen-macos-arm64 | cut -d' ' -f1)
          SHA_MACOS_AMD64=$(shasum -a 256 artifacts/limen-macos-amd64/limen-macos-amd64 | cut -d' ' -f1)
          SHA_LINUX_ARM64=$(shasum -a 256 artifacts/limen-linux-arm64/limen-linux-arm64 | cut -d' ' -f1)
          SHA_LINUX_AMD64=$(shasum -a 256 artifacts/limen-linux-amd64/limen-linux-amd64 | cut -d' ' -f1)

          FORMULA="homebrew-tap/Formula/limen.rb"
          mkdir -p "$(dirname "$FORMULA")"
          cat > "$FORMULA" <<RUBY
          class Limen < Formula
            desc "Terminal launcher TUI for tmux and SSH"
            homepage "https://github.com/KofTwentyTwo/limen"
            version "${VERSION}"
            license "GPL-3.0-only"

            depends_on "tmux"

            host_cpu = RbConfig::CONFIG.fetch("host_cpu", "")
            macos_arm = OS.mac? && (Hardware::CPU.arm? || host_cpu == "arm64" || RUBY_PLATFORM.start_with?("arm64-darwin"))
            linux_arm = OS.linux? && (Hardware::CPU.arm? || host_cpu == "aarch64" || host_cpu == "arm64")

            if macos_arm
              url "https://github.com/KofTwentyTwo/limen/releases/download/v#{version}/limen-macos-arm64"
              sha256 "${SHA_MACOS_ARM64}"
            elsif OS.mac?
              url "https://github.com/KofTwentyTwo/limen/releases/download/v#{version}/limen-macos-amd64"
              sha256 "${SHA_MACOS_AMD64}"
            elsif linux_arm
              url "https://github.com/KofTwentyTwo/limen/releases/download/v#{version}/limen-linux-arm64"
              sha256 "${SHA_LINUX_ARM64}"
            else
              url "https://github.com/KofTwentyTwo/limen/releases/download/v#{version}/limen-linux-amd64"
              sha256 "${SHA_LINUX_AMD64}"
            end

            def install
              binary = Dir["limen-*"].first
              chmod 0755, binary
              bin.install binary => "limen"
            end

            test do
              assert_match version.to_s, shell_output("#{bin}/limen --version")
            end
          end
          RUBY

      - name: Commit and push
        run: |
          cd homebrew-tap
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add Formula/limen.rb
          if git status -s | grep -q "Formula/limen.rb"; then
            git commit -m "Update limen to ${GITHUB_REF_NAME}"
            git push
          else
            echo "Formula already current."
          fi