module Grendel
  class User
    attr_accessor :id, :password, :uri
    attr_reader :client, :modified_at, :created_at, :keys

    # create a new Grendel::User object
    # params:
    #  id
    #  uri
    #  password
    def initialize(client, params)
      params.symbolize_keys!
      @client = client
      @id = params[:id]
      @uri = params[:uri] ?
        URI.parse(params[:uri]).path :
        "/users/" + @id # escape this?
      @password = params[:password]
      @modified_at = DateTime.parse(params[:"modified-at"]) if params[:"modified-at"]
      @created_at = DateTime.parse(params[:"created-at"]) if params[:"created-at"]
      @keys = params[:keys]
    end

    # return user's creds in the form required by HTTParty
    def auth
      {:basic_auth => {:username => id, :password => password}}
    end

    #
    # methods to do authenticated client calls with the user's base_uri
    #
    def get(uri = "", options = {})
      options.merge!(auth)
      @client.get(child_uri(uri), options)
    end

    def head(uri = "", options = {})
      options.merge!(auth)
      @client.head(child_uri(uri), options)
    end

    def post(uri = "", data = {}, options = {})
      options.merge!(auth)
      @client.post(child_uri(uri), data, options)
    end

    def put(uri = "", data = {}, options = {})
      options.merge!(auth)
      @client.put(child_uri(uri), data, options)
    end

    def delete(uri = "", options = {})
      options.merge!(auth)
      @client.delete(child_uri(uri), options)
    end

    # change the user's password
    def change_password(new_password)
      put("", {:password => new_password})
      @password = new_password
    end

    # send documents calls to the DocumentManager
    def documents
      DocumentManager.new(self)
    end

    # send linked documents calls to the LinkedDocumentManager
    def linked_documents
      LinkedDocumentManager.new(self)
    end

    private
      def child_uri(uri)
        if uri.nil? || uri.empty?
          # blank uri, just use the user's uri
          @uri
        elsif uri.index(@uri) == 0
          # uri already starts with user's uri, just leave it alone
          uri
        else
          # otherwise just tack the uri onto the end of the user's uri
          @uri + uri
        end
      end
  end
end