# Tinqs Setup Go — replaces actions/setup-go@v5
# Original: https://github.com/actions/setup-go (GitHub-hosted, Node.js action)
# Why rewritten: Original uses GitHub's tool cache API and Node.js runtime — neither
#   available on self-hosted Gitea runners. This composite action downloads Go directly
#   from go.dev and sets GITHUB_PATH. Skips install if correct version already present
#   (for when runner image has Go pre-baked).
# Removed from original: tool cache, go-version-file, check-latest, cache (actions/cache dep).
# Author: Ozan / Claude Code — 2026-05-22
# Part of: tinqs/ci (Tinqs CI toolchain)

name: 'Tinqs Setup Go'
description: 'Install Go and configure PATH (replaces actions/setup-go)'

inputs:
  go-version:
    description: 'Go version to install'
    default: '1.26.2'

runs:
  using: 'composite'
  steps:
    - run: |
        GO_VERSION="${{ inputs.go-version }}"

        # Skip if already installed at correct version
        if command -v go &>/dev/null; then
          CURRENT=$(go version | grep -oP '\d+\.\d+\.\d+' || true)
          if [ "$CURRENT" = "$GO_VERSION" ]; then
            echo "Go $GO_VERSION already installed"
            go version
            exit 0
          fi
        fi

        echo "Installing Go $GO_VERSION..."
        curl -fsSL "https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz" | tar -C /usr/local -xz
        echo "/usr/local/go/bin" >> "$GITHUB_PATH"
        export PATH="/usr/local/go/bin:$PATH"
        go version
      shell: bash