class User < ActiveRecord::Base
  before_create           :check_name, :check_email, :check_image
  has_and_belongs_to_many :groups
  has_and_belongs_to_many :roles
  has_and_belongs_to_many :organizations
  belongs_to              :organization,  :class_name => 'Organization'
  has_many                :authorizations
  after_create            :delete_cache
  after_update            :delete_cache
  after_destroy           :delete_cache

  @@cache = {}

  def self.authenticate( username, password )
    user = User.where( :login => username, :active => true ).first
    return nil if user.nil?
    logger.debug 'auth'
    logger.debug username
    logger.debug user.login
    logger.debug password
    logger.debug user.password
    logger.debug user.inspect
#    return user
    return user if user.password == password
    return
  end

  def self.create_from_hash!(hash)
#    logger.debug(hash.inspect)
#    raise hash.to_yaml  
#    exit
    url = ''
    if hash['info']['urls'] then
      url = hash['info']['urls']['Website'] || hash['info']['urls']['Twitter'] || ''
    end
#    logger.debug(hash['info'].inspect)
#    raise url.to_yaml
#    exit
#    logger.debug('aaaaaaaa')
    roles = Role.where( :name => 'Customer' )
    create(
      :login         => hash['info']['nickname'] || hash['uid'],
      :firstname     => hash['info']['name'],
      :email         => hash['info']['email'],
      :image         => hash['info']['image'],
#      :url        => url.to_s,
      :note          => hash['info']['description'],
      :source        => hash['provider'],
      :roles         => roles,
      :created_by_id => 1
    )

  end
  
  def self.find_fulldata(user_id)

    return @@cache[user_id] if @@cache[user_id]

    # get user
    user = User.find(user_id)

    # get linked accounts
    user['accounts'] = {}
    authorizations = user.authorizations() || []
    authorizations.each do | authorization |
      user['accounts'][authorization.provider] = {
        :uid      => authorization[:uid],
        :username => authorization[:username]
      }
    end
  
    # set roles
    user['roles']         = user.roles.select('id, name').where(:active => true)
    user['groups']        = user.groups.select('id, name').where(:active => true)
    user['organization']  = user.organization
    user['organizations'] = user.organizations.select('id, name').where(:active => true)

    @@cache[user_id] = user

    return user
  end
  
  private
    def delete_cache
      @@cache[self.id] = nil
    end

    def check_name
      if self.firstname && (!self.lastname || self.lastname == '') then
        name = self.firstname.split(' ', 2)
        self.firstname = name[0]
        self.lastname  = name[1]
      end
    end
    def check_email
      if self.email then
        self.email = self.email.downcase
      end
    end
    def check_image
      require 'digest/md5'
      if !self.image || self.image == '' then
        if self.email then
          hash = Digest::MD5.hexdigest(self.email)
          self.image = "http://www.gravatar.com/avatar/#{hash}?s=48"
        end
      end
    end
end