+ ##
+ # return a spam score for a user
+ def spam_score
+ changeset_score = self.changesets.size * 50
+ trace_score = self.traces.size * 50
+ diary_entry_score = self.diary_entries.inject(0) { |s,e| s += e.body.spam_score }
+ diary_comment_score = self.diary_comments.inject(0) { |s,c| s += c.body.spam_score }
+
+ score = self.description.spam_score / 4.0
+ score += diary_entry_score / self.diary_entries.length if self.diary_entries.length > 0
+ score += diary_comment_score / self.diary_comments.length if self.diary_comments.length > 0
+ score -= changeset_score
+ score -= trace_score
+
+ return score.to_i
+ end
+
+ ##
+ # perform a spam check on a user
+ def spam_check
+ if status == "active" and spam_score > SPAM_THRESHOLD
+ update_column(:status, "suspended")
+ end
+ end
+
+ ##
+ # return an oauth access token for a specified application
+ def access_token(application_key)
+ return ClientApplication.find_by_key(application_key).access_token_for_user(self)
+ end
+
+private
+
+ def set_defaults
+ self.creation_time = Time.now.getutc unless self.attribute_present?(:creation_time)
+ self.description_format = "markdown" unless self.attribute_present?(:description_format)
+ end
+
+ def encrypt_password
+ if pass_crypt_confirmation
+ self.pass_crypt, self.pass_salt = PasswordHash.create(pass_crypt)
+ self.pass_crypt_confirmation = nil
+ end
+ end