require 'modulesync'

module ModuleSync
  class Hook
    attr_reader :hook_file, :namespace, :branch, :args

    def initialize(hook_file, options = [])
      @hook_file = hook_file
      @namespace = options[:namespace]
      @branch = options[:branch]
      @args = options[:hook_args]
    end

    def content(arguments)
      <<~CONTENT
        #!/usr/bin/env bash

        current_branch=`git symbolic-ref HEAD | sed -e 's,.*/(.*),\1,'`
        git_dir=`git rev-parse --show-toplevel`
        message=`git log -1 --format=%B`
        msync -m "$message" #{arguments}
      CONTENT
    end

    def activate
      hook_args = []
      hook_args << "-n #{namespace}" if namespace
      hook_args << "-b #{branch}" if branch
      hook_args << args if args

      File.write(hook_file, content(hook_args.join(' ')))
    end

    def deactivate
      FileUtils.rm_f(hook_file)
    end
  end
end