Finalize user signin and session backend

session.rb

@@ -0,0 +1,49 @@
+require "base64"
+require "json"
+
+def set_session(request, response, key, val)
+  session = request.cookies["session"]
+  session = "e30=\n" if session.nil?
+  session = JSON.parse(Base64.decode64(session))
+  session[key] = val
+  session = Base64.encode64(JSON.generate(session))
+  response.set_cookie("session",
+                      value: session,
+                      path: "/",
+                      expires: Time.now + 360 * 24 * 60 * 60)
+rescue JSON::ParserError
+  response.delete_cookie("session")
+end
+
+def get_session(request, response, key)
+  session = request.cookies["session"]
+  session = "{}" if session.nil?
+  session = JSON.parse(Base64.decode64(session))
+  session[key]
+rescue JSON::ParserError
+  response.delete_cookie("session")
+  ""
+end
+
+def get_session_all(request, response)
+  session = request.cookies["session"]
+  session = "{}" if session.nil?
+  JSON.parse(Base64.decode64(session))
+rescue JSON::ParserError
+  response.delete_cookie("session")
+  ""
+end
+
+def rm_session(request, response, key)
+  session = request.cookies["session"]
+  session = "{}" if session.nil?
+  session = JSON.parse(Base64.decode64(session))
+  session.delete(key)
+  session = Base64.encode64(JSON.generate(session))
+  response.set_cookie("session",
+                      value: session,
+                      path: "/",
+                      expires: Time.now + 360 * 24 * 60 * 60)
+rescue JSON::ParserError
+  response.delete_cookie("session")
+end