1 files changed, 71 insertions, 0 deletions
diff --git a/app/helpers/sessions_helper.rb b/app/helpers/sessions_helper.rb
index 309f8b2..046ca6f 100644
--- a/app/helpers/sessions_helper.rb
+++ b/app/helpers/sessions_helper.rb
@@ -1,2 +1,73 @@
 module SessionsHelper
+
+	def sign_in(user)
+		#create a new remember token
+		remember_token = User.new_remember_token
+		#place token inside of the browser
+		cookies.permanent[:remember_token] = remember_token
+		#save the hashed token to the database
+		user.update_attribute(:remember_token, 
+                         User.hash(remember_token))
+		#set the current user to be the given user
+		self.current_user = user
+	end
+
+# The curret_user=(user) is the conversion of self.current_user = user
+	def current_user=(user)
+		@current_user = user
+	end
+
+# sets the @current_user instance virable to the user corresponding
+# to the remember token, but only if @current_user is undefined
+# since the remember token is hashed, we need to hash the cookie
+# to find match the remember token
+  def current_user
+    remember_token = User.hash(cookies[:remember_token])
+    @current_user ||= User.find_by(remember_token: remember_token)
+  end
+
+	# checks if someone is currently signed in
+	def signed_in?
+		!current_user.nil?
+	end
+
+  def sign_out
+    current_user.update_attribute(:remember_token, User.hash(User.new_remember_token))
+    cookies.delete(:remember_token)
+    self.current_user = nil
+  end
+
+=begin
+
+This is for anyone that cares about how long a user is signed
+in:
+
+Currently I have a user to be signed in forever unless they
+log out (cookies.permanent....).
+
+If you want to change that, change line 7 to this:
+
+cookies[:remember_token] = { value: remember_token, 
+                            expires: 20.years.from_now.utc }
+
+which will expire the cookie in 20 years from its date of
+creation.
+
+Oddly enough, this line above is equivalent to the:
+
+cookies.permanent
+
+This is just a short cut for this line since most people 
+create permanent cookies these days.
+
+Other times are:
+
+10.weeks.from_now
+
+5.days.ago
+
+etc...
+
+=end
+
 end