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app.py

@@ -1,10 +1,7 @@
 import os
 import json
-import uuid
-import time
 import re
 from pathlib import Path
-from fastapi import FastAPI
 from fastapi.responses import HTMLResponse
 from fastapi.staticfiles import StaticFiles
 import gradio as gr
@@ -13,14 +10,6 @@ from openai import OpenAI
 # Default system prompt for DeepSeek V4 Flash
 DEFAULT_SYSTEM_PROMPT = "You are DeepSeek, a helpful AI assistant powered by DeepSeek V4 Flash. You provide accurate, detailed, and thoughtful responses."
 
-# ── In-memory per-user session storage ──────────────────────────────────
-USER_DATA = {}
-
-def get_user_sessions(username):
-    if username not in USER_DATA:
-        USER_DATA[username] = {"sessions": {}, "active_session": None}
-    return USER_DATA[username]
-
 # ── Initialize Gradio Server (FastAPI subclass) ─────────────────────────
 app = gr.Server()
 
@@ -93,126 +82,6 @@ def chat_with_deepseek(
         })
 
 
-# ── API Endpoint: Get User Info (OAuth) ────────────────────────────────
-@app.api(name="get_user_info")
-def get_user_info(profile: gr.OAuthProfile | None = None) -> str:
-    """Return the logged-in user's name, or empty string if not logged in."""
-    # The Gradio Server passes the OAuth profile automatically
-    if profile is None:
-        return json.dumps({"logged_in": False, "username": ""})
-    return json.dumps({"logged_in": True, "username": getattr(profile, 'name', '')})
-
-
-# ── API Endpoint: Save Chat Session ────────────────────────────────────
-@app.api(name="save_chat_session")
-def save_chat_session(
-    messages_json: str,
-    title: str,
-    session_id: str,
-    profile: gr.OAuthProfile | None = None,
-) -> str:
-    if profile is None:
-        return json.dumps({"status": "error", "message": "Not logged in"})
-
-    username = getattr(profile, 'name', '')
-    ud = get_user_sessions(username)
-
-    if not session_id or session_id == "new":
-        sid = str(uuid.uuid4())[:8]
-    else:
-        sid = session_id
-
-    messages = json.loads(messages_json) if messages_json else []
-
-    if not title or title == "New Chat":
-        for m in messages:
-            if m.get("role") == "user":
-                t = m.get("content", "")
-                if isinstance(t, str):
-                    title = t[:60] + ("..." if len(t) > 60 else "")
-                break
-
-    ud["sessions"][sid] = {
-        "title": title,
-        "messages": messages,
-        "updated_at": time.time()
-    }
-    ud["active_session"] = sid
-
-    return json.dumps({"status": "success", "session_id": sid, "title": title})
-
-
-# ── API Endpoint: Load Chat Session ────────────────────────────────────
-@app.api(name="load_chat_session")
-def load_chat_session(
-    session_id: str,
-    profile: gr.OAuthProfile | None = None,
-) -> str:
-    if profile is None:
-        return json.dumps({"status": "error", "message": "Not logged in"})
-
-    username = getattr(profile, 'name', '')
-    ud = get_user_sessions(username)
-
-    if session_id not in ud["sessions"]:
-        return json.dumps({"status": "error", "message": "Session not found"})
-
-    ud["active_session"] = session_id
-    sess = ud["sessions"][session_id]
-
-    return json.dumps({
-        "status": "success",
-        "session_id": session_id,
-        "title": sess["title"],
-        "messages": sess["messages"]
-    })
-
-
-# ── API Endpoint: List Chat Sessions ───────────────────────────────────
-@app.api(name="list_chat_sessions")
-def list_chat_sessions(profile: gr.OAuthProfile | None = None) -> str:
-    if profile is None:
-        return json.dumps({"status": "error", "message": "Not logged in", "sessions": []})
-
-    username = getattr(profile, 'name', '')
-    ud = get_user_sessions(username)
-
-    sessions = []
-    for sid, sess in sorted(
-        ud["sessions"].items(),
-        key=lambda x: x[1].get("updated_at", 0),
-        reverse=True
-    ):
-        sessions.append({
-            "id": sid,
-            "title": sess["title"],
-            "updated_at": sess.get("updated_at", 0),
-            "message_count": len(sess.get("messages", []))
-        })
-
-    return json.dumps({"status": "success", "sessions": sessions})
-
-
-# ── API Endpoint: Delete Chat Session ──────────────────────────────────
-@app.api(name="delete_chat_session")
-def delete_chat_session(
-    session_id: str,
-    profile: gr.OAuthProfile | None = None,
-) -> str:
-    if profile is None:
-        return json.dumps({"status": "error", "message": "Not logged in"})
-
-    username = getattr(profile, 'name', '')
-    ud = get_user_sessions(username)
-
-    if session_id in ud["sessions"]:
-        del ud["sessions"][session_id]
-        if ud["active_session"] == session_id:
-            ud["active_session"] = None
-
-    return json.dumps({"status": "success"})
-
-
 # ── Serve the main HTML page ────────────────────────────────────────────
 @app.get("/")
 async def homepage():