mattboldt/guac

require_relative 'sys_command'
require_relative 'config'

module Guac
  class Repo
    attr_reader :name, :dir

    def self.build_from_config(*args)
      config = Guac::Config.load
      config[:repos].map { |r| new(config, r, *args) }
    end

    def initialize(config, repo, branch = nil)
      @config = config
      @repo   = repo
      @name   = repo[:name]
      @dir    = repo[:dir]
      @branch = branch || config[:default_branch]
    end

    def branch
      aliases = @repo[:branch_aliases]
      if aliases
        aliases[@branch] || @branch
      else
        @branch
      end
    end

    def status
      SysCommand.run(@dir, %w(git status))
    end

    def checkout
      SysCommand.run(@dir, %W(git checkout #{branch}))
    end

    def pull
      pull_cmd = @config[:pull_strategy].split(/ \s*/)
      SysCommand.run(@dir, pull_cmd)
    end

    def self.valid?(dirs)
      !dirs.empty? && dirs.all? do |dir|
        d = File.join(dir.sub('~', ENV['HOME']), '.git')
        Dir.exist?(d)
      end
    end
  end
end