# encoding: utf-8
require 'rubygems' if RUBY_VERSION < '1.9'
require 'json'

module Imap::Backup::Configuration
  class Store
    CONFIGURATION_DIRECTORY = File.expand_path('~/.imap-backup')

    attr_reader :data
    attr_reader :path

    def self.default_pathname
      File.join(CONFIGURATION_DIRECTORY, 'config.json')
    end

    def self.exist?(pathname = default_pathname)
      File.exist?(pathname)
    end

    def initialize(pathname = self.class.default_pathname)
      @pathname = pathname
      if File.directory?(path)
        Imap::Backup::Utils.check_permissions path, 0700
      end
      if File.exist?(@pathname)
        Imap::Backup::Utils.check_permissions @pathname, 0600
        @data = JSON.parse(File.read(@pathname), :symbolize_names => true)
      else
        @data = {:accounts => []}
      end
    end

    def save
      mkdir_private path
      File.open(@pathname, 'w') { |f| f.write(JSON.pretty_generate(@data)) }
      FileUtils.chmod 0600, @pathname
      @data[:accounts].each do |account|
        mkdir_private account[:local_path]
        account[:folders].each do |f|
          parts = f[:name].split('/')
          p     = account[:local_path].clone
          parts.each do |part|
            p    = File.join(p, part)
            mkdir_private p
          end
        end
      end
    end

    def path
      File.dirname(@pathname)
    end

    private

    def mkdir_private(path)
      if ! File.directory?(path)
        FileUtils.mkdir path
      end
      if Imap::Backup::Utils::stat(path) != 0700
        FileUtils.chmod 0700, path
      end
    end
  end
end