added persistant level and logo

.sessions/johndoe/level.txt

@@ -0,0 +1 @@
+3

0_Introduction.py

@@ -1,5 +1,4 @@
 import streamlit as st
-import os
 from utils.levels import complete_level, initialize_level, render_page, get_level
 from utils.login import initialize_login
 

utils/levels.py

@@ -1,9 +1,17 @@
 import streamlit as st
 from utils.login import get_login
+import os
 
 def initialize_level():
     if 'level' not in st.session_state:
-        st.session_state['level'] = 0
+        if get_login()["status"]:
+            if not os.path.exists(f".sessions/{get_login()['username']}/level.txt"):
+                with open(f".sessions/{get_login()['username']}/level.txt", "w") as f:
+                    f.write("0")
+                st.session_state['level'] = 0
+            else:
+                with open(f".sessions/{get_login()['username']}/level.txt", "r") as f:
+                    st.session_state['level'] = int(f.read())
 
 def get_level():
     return st.session_state['level']
@@ -22,5 +30,7 @@ def complete_level(level):
         st.info(f'You have Already completed Level {level}!')
     else:
         st.session_state['level'] = level + 1
+        with open(f".sessions/{get_login()['username']}/level.txt", "w") as f:
+            f.write(str(st.session_state['level']))
         st.balloons()
         st.success(f'You have completed Level {level}! You can now move on to the next level.')

utils/login.py

@@ -1,26 +1,28 @@
 import streamlit as st
 import os
 
+
 def initialize_login():
-    if 'login' not in st.session_state:
-        username = st.text_input('Username')
-        password = st.text_input('Password', type='password')
-        if st.button('Login'):
+    if "login" not in st.session_state:
+        st.columns(3)[1].image("assets/logo.png")
+        username = st.text_input("Username")
+        password = st.text_input("Password", type="password")
+        if st.button("Login"):
             # TODO: replace with actual authorization check
-            authorized = {
-                "status": True,
-                "Name": "John Doe",
-                "username": "johndoe"
-            }
+            authorized = {"status": True, "Name": "John Doe", "username": "johndoe"}
             if authorized["status"]:
-                st.session_state['login'] = authorized
-                os.makedirs(os.path.join('.sessions', st.session_state["login"]["username"]), exist_ok=True)
-                st.success('Login Successful!')
+                st.session_state["login"] = authorized
+                os.makedirs(
+                    os.path.join(".sessions", st.session_state["login"]["username"]),
+                    exist_ok=True,
+                )
+                st.success("Login Successful!")
                 st.experimental_rerun()
             else:
-                st.error('Invalid username or password')
+                st.error("Invalid username or password")
     else:
         st.sidebar.success(f'Hello, {st.session_state["login"]["Name"]}!')
 
+
 def get_login():
-    return st.session_state.get('login', {"status": False})
+    return st.session_state.get("login", {"status": False})