module Shipit
  class Commands
    def self.for(model)
      "#{model.class.name}Commands".constantize.new(model)
    end

    def self.git_version
      @git_version ||= begin
        `git --version` =~ /([\d\.]+)/
        raise 'git command not found' unless $1
        Gem::Version.new($1)
      end
    end

    delegate :git_version, to: :class

    def env
      @env ||= Shipit.env
    end

    def git(*args)
      Command.new("git", *args)
    end
  end
end