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import uuid
from copy import deepcopy
MEMORY = {}
TTL = 86400
MAX_HISTORY = 20
MAX_CHATS = 10
def default_state():
return {
"project_title": "",
"ideas": [],
"features": [],
"description": "",
"abstract": "",
"technologies": [],
"originality_score": None,
"context_strength": None,
"problem_statement": "",
"proposed_solution": "",
"keywords": [],
"ai_summary": "",
"category": "",
"domain": None,
"last_action": None,
"waiting_for_domain": False,
"waiting_for_niche_domain": False,
"waiting_for_full_project_domain": False,
"waiting_for_full_project_selection": False,
"waiting_for_feature_title": False,
"waiting_for_title_confirmation": False,
"waiting_for_project_action": False,
"suggested_domains": [],
"pending_title": None,
"weak_title_candidate": None,
"project_chat_mode": False,
"menu_mode": False,
"selected_option": None
}
def create_chat(user_id: str):
user = MEMORY.setdefault(user_id, {
"chats": {},
"active_chat_id": None,
"timestamp": time.time()
})
if len(user["chats"]) >= MAX_CHATS:
oldest = sorted(
user["chats"].items(),
key=lambda x: x[1]["last_updated"]
)[0][0]
del user["chats"][oldest]
chat_id = str(uuid.uuid4())
user["chats"][chat_id] = {
"history": [],
"state": default_state(),
"last_updated": time.time()
}
user["active_chat_id"] = chat_id
return chat_id
def get_user_memory(user_id: str):
user = MEMORY.get(user_id)
if not user:
create_chat(user_id)
user = MEMORY[user_id]
if time.time() - user["timestamp"] > TTL:
MEMORY[user_id] = {}
create_chat(user_id)
user = MEMORY[user_id]
chat_id = user.get("active_chat_id")
if not chat_id or chat_id not in user["chats"]:
chat_id = create_chat(user_id)
return user["chats"][chat_id]
def merge_state(old: dict, new: dict):
merged = deepcopy(old)
for key, value in new.items():
if key in ["project_title", "description"]:
merged[key] = value
continue
if isinstance(value, list):
if not value:
merged[key] = []
continue
existing = merged.get(key, [])
combined = []
seen = set()
for item in existing + value:
norm = str(item).lower().strip()
if norm and norm not in seen:
seen.add(norm)
combined.append(item)
merged[key] = combined[:20]
else:
merged[key] = value
return merged
def save_user_memory(user_id: str, data: dict):
user = MEMORY.get(user_id)
if not user:
create_chat(user_id)
user = MEMORY[user_id]
chat_id = user["active_chat_id"]
chat = user["chats"][chat_id]
history = data.get("history", [])
new_state = data.get("state", {})
history = history[-MAX_HISTORY:]
chat["state"] = merge_state(chat["state"], new_state)
chat["history"] = history
chat["last_updated"] = time.time()
user["timestamp"] = time.time()
def get_all_chats(user_id: str):
user = MEMORY.get(user_id, {})
chats = user.get("chats", {})
return [
{
"chat_id": chat_id,
"title": chat["state"].get("project_title") or "New Chat",
"last_updated": chat["last_updated"]
}
for chat_id, chat in chats.items()
]
def switch_chat(user_id: str, chat_id: str):
user = MEMORY.get(user_id)
if not user:
return
if chat_id in user.get("chats", {}):
user["active_chat_id"] = chat_id
def clear_user_memory(user_id: str):
if user_id in MEMORY:
del MEMORY[user_id]
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