class User < ActiveRecord::Base
+ require 'xml/libxml'
+ require 'digest/md5'
+
has_many :traces
+ has_many :diary_entries
+ has_many :messages, :foreign_key => :to_user_id
+ has_many :friends
+
+ validates_confirmation_of :pass_crypt, :message => 'Password must match the confirmation password'
+ validates_uniqueness_of :display_name, :allow_nil => true
+ validates_uniqueness_of :email
+ validates_length_of :pass_crypt, :minimum => 8
+ validates_length_of :display_name, :minimum => 3, :allow_nil => true
+ validates_format_of :email, :with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i
+ validates_format_of :display_name, :with => /^[^\/;.,?]*$/
+
+ before_save :encrypt_password
+
+ def set_defaults
+ self.creation_time = Time.now
+ self.timeout = Time.now
+ self.token = User.make_token()
+ end
+
+ def encrypt_password
+ self.pass_crypt = Digest::MD5.hexdigest(pass_crypt) if pass_crypt_confirmation
+ end
+
+ def self.authenticate(email, passwd)
+ find(:first, :conditions => [ "email = ? AND pass_crypt = ? AND active = true", email, Digest::MD5.hexdigest(passwd)])
+ end
+
+ def self.authenticate_token(token)
+ find(:first, :conditions => [ "token = ? ", token])
+ end
+
+ def self.make_token(length=30)
+ chars = 'abcdefghijklmnopqrtuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
+ confirmstring = ''
+
+ length.times do
+ confirmstring += chars[(rand * chars.length).to_i].chr
+ end
+
+ return confirmstring
+ end
+
+ def to_xml
+ doc = OSM::API.new.get_xml_doc
+ doc.root << to_xml_node()
+ return doc
+ end
+
+ def to_xml_node
+ el1 = XML::Node.new 'user'
+ el1['display_name'] = self.display_name.to_s
+ el1['account_created'] = self.creation_time.xmlschema
+ return el1
+ end
+
+ def nearby(lat_range=1, lon_range=1)
+ if self.home_lon and self.home_lat
+ nearby = User.find(:all, :conditions => "#{self.home_lon} > home_lon - #{lon_range} and #{self.home_lon} < home_lon + #{lon_range} and #{self.home_lat} > home_lat - #{lat_range} and #{self.home_lat} < home_lat + #{lat_range} and data_public = 1 and id != #{self.id}")
+ else
+ nearby = []
+ end
+ return nearby
+ end
+
+ def self.has_messages?
+ if Message.fdhjklsafind_by_to_user_id(self.id)
+ return true
+ else
+ return false
+ end
+ end
+
+ def get_new_messages
+ messages = Message.find(:all, :conditions => "message_read = 0 and to_user_id = #{self.id}")
+ return messages
+ end
+
+ def get_all_messages
+ messages = Message.find(:all, :conditions => "to_user_id = #{self.id}")
+ return messages
+ end
+
+ def is_friends_with?(new_friend)
+ res = false
+ @new_friend = new_friend
+ self.friends.each do |friend|
+ if friend.user_id == @new_friend.user_id
+ return true
+ end
+ end
+ return false
+ end
+
end