Create app.py

app.py

@@ -0,0 +1,104 @@
+import streamlit as st
+import json
+import os
+
+if 'username' not in st.session_state:
+    st.session_state.username = ''
+if 'scratch_pad' not in st.session_state:
+    st.session_state.scratch_pad = ''
+
+history_file = 'user_history.json'
+if not os.path.exists(history_file):
+    with open(history_file, 'w') as file:
+        json.dump({}, file)
+
+with open(history_file, 'r') as file:
+    user_history = json.load(file)
+
+def save_session(username, password):
+    st.session_state.username = username
+    st.session_state.scratch_pad = st.session_state.scratch_pad
+    user_history[username] = {
+        'password': password,
+        'scratch_pad': st.session_state.scratch_pad
+    }
+    with open(history_file, 'w') as file:
+        json.dump(user_history, file)
+
+def register_user(username, password):
+    if username not in user_history:
+        save_session(username, password)
+        st.success("User registered successfully!")
+    else:
+        st.warning("Username already exists. Please choose a different username.")
+
+def login_user(username, password):
+    if username in user_history:
+        stored_password = user_history[username]['password']
+        if password == stored_password:
+            st.session_state.username = username
+            st.session_state.scratch_pad = user_history[username]['scratch_pad']
+            st.success("Logged in successfully!")
+            return True
+        else:
+            st.error("Incorrect password. Please try again.")
+    else:
+        st.warning("Username not found. Please register first.")
+    return False
+
+def reset_password(username):
+    if username in user_history:
+        new_password = ''.join(random.choices(string.ascii_letters + string.digits, k=8))
+        user_history[username]['password'] = new_password
+        with open(history_file, 'w') as file:
+            json.dump(user_history, file)
+        st.success(f"Password reset successful. Your new password is: {new_password}")
+    else:
+        st.warning("Username not found.")
+
+def save_scratch_pad(username, content):
+    filename = f"{username}_scratch_pad.txt"
+    with open(filename, 'w') as file:
+        file.write(content)
+    st.success(f"Scratch pad saved successfully. Filename: {filename}")
+
+def load_scratch_pad(username):
+    filename = f"{username}_scratch_pad.txt"
+    if os.path.exists(filename):
+        with open(filename, 'r') as file:
+            content = file.read()
+        return content
+    return ''
+
+def get_user_files(username):
+    files = [f for f in os.listdir('.') if f.startswith(f"{username}_")]
+    return files
+
+st.title("Welcome to My App")
+
+if st.session_state.username:
+    st.subheader(f"Welcome back, {st.session_state.username}!")
+    scratch_pad_content = load_scratch_pad(st.session_state.username)
+    scratch_pad = st.text_area("Scratch Pad", value=scratch_pad_content, height=200)
+    if st.button("💾 Save"):
+        save_scratch_pad(st.session_state.username, scratch_pad)
+    if st.button("🔑 Reset Password"):
+        reset_password(st.session_state.username)
+
+    st.subheader("Your Files")
+    user_files = get_user_files(st.session_state.username)
+    for file in user_files:
+        st.write(file)
+        with open(file, 'rb') as f:
+            st.download_button(label=f"Download {file}", data=f, file_name=file)
+else:
+    username = st.text_input("Username:")
+    password = st.text_input("Password:", type="password")
+    col1, col2 = st.columns(2)
+    with col1:
+        if st.button("🔑 Login"):
+            if login_user(username, password):
+                st.experimental_rerun()
+    with col2:
+        if st.button("📝 Register"):
+            register_user(username, password)