module Jets::Git
  class Local
    include GitCli
    extend Memoist

    def params
      return {} unless git? && git_branch
      params = {
        git_system: 'local',
        git_branch: git_branch,
        git_sha: git_sha,
        git_dirty: git_dirty?,
        git_message: git_message,
        git_version: git_version,
      }
      params[:git_url] = git_url if git_url
      params
    end

    def git_message
      git "log -1 --pretty=%B"
    end

    def git_branch
      git "rev-parse --abbrev-ref HEAD"
    end

    def git_sha
      git "rev-parse HEAD"
    end

    def git_url
      # IE: git "config --get remote.origin.url"
      git "config --get remote.#{git_remote}.url"
    end

    def git_dirty?
      !git("status --porcelain").empty?
    end

    def git_version
      git "--version", on_error: :raise
    end

    # discover git remote name. in case it's not origin
    def git_remote
      # 2>&1 to suppress error message
      #   "fatal: not a git repository (or any parent up to mount point /path)\nStopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).\n"
      `git remote 2>&1`
      return unless $?.success?
      `git remote`.strip # IE: origin or blank string
    end
    memoize :git_remote
  end
end