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import secrets
from typing import List, Optional, Dict, Any
import numpy as np
from sentence_transformers import SentenceTransformer
import psycopg2
import psycopg2.pool
from .config import config
class DatabaseManager:
def __init__(self):
self._pool = psycopg2.pool.ThreadedConnectionPool(
minconn=1,
maxconn=10,
dsn=config.DATABASE_URL,
)
self._init_schema()
self.embedding_model = SentenceTransformer("all-MiniLM-L6-v2")
# ------------------------------------------------------------------
# Connection context manager
# ------------------------------------------------------------------
class _Conn:
def __init__(self, pool):
self._pool = pool
self.conn = None
def __enter__(self):
self.conn = self._pool.getconn()
return self.conn
def __exit__(self, exc_type, *_):
if self.conn:
if exc_type:
self.conn.rollback()
self._pool.putconn(self.conn)
def _conn(self):
return self._Conn(self._pool)
# ------------------------------------------------------------------
# Schema
# ------------------------------------------------------------------
def _init_schema(self):
with self._conn() as conn:
cur = conn.cursor()
cur.execute("""
CREATE TABLE IF NOT EXISTS users (
id SERIAL PRIMARY KEY,
username TEXT UNIQUE NOT NULL,
password_hash TEXT NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute("""
CREATE TABLE IF NOT EXISTS conversations (
id SERIAL PRIMARY KEY,
user_id INTEGER NOT NULL REFERENCES users(id),
title TEXT,
started_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute("""
CREATE TABLE IF NOT EXISTS messages (
id SERIAL PRIMARY KEY,
conversation_id INTEGER NOT NULL REFERENCES conversations(id),
role TEXT NOT NULL CHECK(role IN ('user','assistant')),
content TEXT NOT NULL,
timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute("""
CREATE TABLE IF NOT EXISTS user_profiles (
user_id INTEGER PRIMARY KEY REFERENCES users(id),
summary_text TEXT DEFAULT '',
last_updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute("""
CREATE TABLE IF NOT EXISTS memories (
id SERIAL PRIMARY KEY,
user_id INTEGER NOT NULL REFERENCES users(id),
content TEXT NOT NULL,
embedding TEXT NOT NULL,
metadata TEXT DEFAULT '{}',
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS is_guest BOOLEAN DEFAULT FALSE"
)
cur.execute("ALTER TABLE users ADD COLUMN IF NOT EXISTS guest_ip TEXT")
cur.execute("""
CREATE TABLE IF NOT EXISTS guest_ip_log (
id SERIAL PRIMARY KEY,
ip TEXT NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_guest_ip_log_ip ON guest_ip_log(ip)"
)
cur.execute("""
CREATE TABLE IF NOT EXISTS shared_conversations (
id SERIAL PRIMARY KEY,
token TEXT UNIQUE NOT NULL,
user_id INTEGER NOT NULL REFERENCES users(id),
conversation_id INTEGER NOT NULL REFERENCES conversations(id),
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_shared_token ON shared_conversations(token)"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS is_admin BOOLEAN DEFAULT FALSE"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS stripe_customer_id TEXT"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS subscription_status TEXT"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS subscription_plan TEXT"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS subscription_id TEXT"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS current_period_end TIMESTAMP"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS free_messages_used INTEGER DEFAULT 0"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS sub_messages_used INTEGER DEFAULT 0"
)
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS sub_period_start TIMESTAMP"
)
cur.execute("""
CREATE TABLE IF NOT EXISTS payment_history (
id SERIAL PRIMARY KEY,
user_id INTEGER NOT NULL REFERENCES users(id),
stripe_payment_id TEXT,
amount_cents INTEGER,
currency TEXT DEFAULT 'usd',
status TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute(
"""CREATE UNIQUE INDEX IF NOT EXISTS idx_payment_history_stripe_payment_id
ON payment_history(stripe_payment_id)
WHERE stripe_payment_id IS NOT NULL"""
)
# Admin audit log
cur.execute("""
CREATE TABLE IF NOT EXISTS admin_audit_log (
id SERIAL PRIMARY KEY,
admin_id INTEGER REFERENCES users(id),
action TEXT NOT NULL,
target_user_id INTEGER,
ip_address TEXT,
details TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_audit_log_admin ON admin_audit_log(admin_id)"
)
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_audit_log_created ON admin_audit_log(created_at)"
)
# TOTP secrets for admin MFA
cur.execute("ALTER TABLE users ADD COLUMN IF NOT EXISTS totp_secret TEXT")
cur.execute(
"ALTER TABLE users ADD COLUMN IF NOT EXISTS totp_pending_secret TEXT"
)
cur.execute("ALTER TABLE users ADD COLUMN IF NOT EXISTS email TEXT")
# OAuth accounts
cur.execute("""
CREATE TABLE IF NOT EXISTS oauth_accounts (
id SERIAL PRIMARY KEY,
user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
provider TEXT NOT NULL,
provider_user_id TEXT NOT NULL,
email TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
UNIQUE(provider, provider_user_id)
)
""")
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_oauth_user_id ON oauth_accounts(user_id)"
)
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_users_email ON users(email) WHERE email IS NOT NULL"
)
# ── Memory layers ──
# Per-conversation rolling summaries (episodic memory)
cur.execute("""
CREATE TABLE IF NOT EXISTS conversation_summaries (
id SERIAL PRIMARY KEY,
conversation_id INTEGER NOT NULL REFERENCES conversations(id),
user_id INTEGER NOT NULL REFERENCES users(id),
summary_text TEXT NOT NULL,
message_count INTEGER DEFAULT 0,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
)
""")
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_conv_summaries_conv ON conversation_summaries(conversation_id)"
)
cur.execute(
"CREATE UNIQUE INDEX IF NOT EXISTS idx_conv_summaries_unique_conv ON conversation_summaries(conversation_id)"
)
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_conv_summaries_user ON conversation_summaries(user_id)"
)
# Stable user facts extracted over time (semantic memory)
cur.execute("""
CREATE TABLE IF NOT EXISTS user_facts (
id SERIAL PRIMARY KEY,
user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
category TEXT NOT NULL DEFAULT 'general',
content TEXT NOT NULL,
importance FLOAT DEFAULT 0.5,
confidence FLOAT DEFAULT 0.8,
source_conv_id INTEGER REFERENCES conversations(id),
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
last_reinforced TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
is_pinned BOOLEAN DEFAULT FALSE
)
""")
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_user_facts_user ON user_facts(user_id)"
)
cur.execute(
"CREATE INDEX IF NOT EXISTS idx_user_facts_importance ON user_facts(user_id, importance DESC)"
)
cur.execute(
"CREATE UNIQUE INDEX IF NOT EXISTS idx_user_facts_unique_content ON user_facts(user_id, content)"
)
# OpenWebUI integration — map OpenWebUI chat IDs to Montaigne conversations
cur.execute(
"ALTER TABLE conversations ADD COLUMN IF NOT EXISTS openwebui_chat_id TEXT"
)
cur.execute(
"CREATE UNIQUE INDEX IF NOT EXISTS idx_conv_openwebui_chat ON conversations(openwebui_chat_id) WHERE openwebui_chat_id IS NOT NULL"
)
conn.commit()
cur.close()
# ------------------------------------------------------------------
# Helpers
# ------------------------------------------------------------------
def _embed(self, text: str) -> List[float]:
return self.embedding_model.encode([text])[0].tolist()
@staticmethod
def _cosine(a: List[float], b: List[float]) -> float:
va, vb = np.array(a), np.array(b)
na, nb = np.linalg.norm(va), np.linalg.norm(vb)
return float(np.dot(va, vb) / (na * nb)) if na and nb else 0.0
# ------------------------------------------------------------------
# Users
# ------------------------------------------------------------------
def get_user_by_username(self, username: str) -> Optional[Dict]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT id, username, password_hash FROM users WHERE username = %s",
(username,),
)
row = cur.fetchone()
cur.close()
return (
{"id": row[0], "username": row[1], "password_hash": row[2]} if row else None
)
def create_user(self, username: str, password_hash: str) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"INSERT INTO users (username, password_hash) VALUES (%s, %s) RETURNING id",
(username, password_hash),
)
row = cur.fetchone()
user_id: int = row[0] if row else 0
cur.execute(
"INSERT INTO user_profiles (user_id, summary_text) VALUES (%s, '')",
(user_id,),
)
conn.commit()
cur.close()
return user_id
def verify_password(self, username: str, password: str) -> Optional[int]:
from .auth import verify_password as _verify
user = self.get_user_by_username(username)
if user and _verify(password, user["password_hash"]):
return user["id"]
return None
# ------------------------------------------------------------------
# Conversations
# ------------------------------------------------------------------
def create_conversation(self, user_id: int) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"INSERT INTO conversations (user_id) VALUES (%s) RETURNING id",
(user_id,),
)
row = cur.fetchone()
conv_id: int = row[0] if row else 0
conn.commit()
cur.close()
return conv_id
# ------------------------------------------------------------------
# OpenWebUI integration
# ------------------------------------------------------------------
def get_or_create_openwebui_user(self, email: str) -> int:
"""Look up or auto-provision a Montaigne user for an OpenWebUI user."""
existing = self.get_user_by_email(email)
if existing and not existing.get("is_guest"):
return existing["id"]
# Create a new non-guest user with no password (OAuth-style)
username = email.split("@")[0]
if self.get_user_by_username(username):
username = f"{username}_{secrets.token_hex(4)}"
return self.create_oauth_user(username, email)
def get_or_create_conversation_by_openwebui_chat(
self, user_id: int, openwebui_chat_id: str
) -> int:
"""Map an OpenWebUI chat ID to a Montaigne conversation (create if new)."""
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT id FROM conversations WHERE openwebui_chat_id = %s",
(openwebui_chat_id,),
)
row = cur.fetchone()
if row:
conv_id: int = row[0]
else:
cur.execute(
"INSERT INTO conversations (user_id, openwebui_chat_id) VALUES (%s, %s) RETURNING id",
(user_id, openwebui_chat_id),
)
row = cur.fetchone()
conv_id = row[0] if row else 0
# Also create user profile if it doesn't exist
cur.execute(
"INSERT INTO user_profiles (user_id, summary_text) VALUES (%s, '') ON CONFLICT (user_id) DO NOTHING",
(user_id,),
)
conn.commit()
cur.close()
return conv_id
def get_user_conversations(self, user_id: int, limit: int = 20) -> List[Dict]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT id, title, started_at FROM conversations WHERE user_id = %s ORDER BY started_at DESC LIMIT %s",
(user_id, limit),
)
rows = cur.fetchall()
cur.close()
return [{"id": r[0], "title": r[1], "started_at": str(r[2])} for r in rows]
def update_conversation_title(self, conversation_id: int, title: str):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE conversations SET title = %s WHERE id = %s",
(title, conversation_id),
)
conn.commit()
cur.close()
# ------------------------------------------------------------------
# Messages
# ------------------------------------------------------------------
def add_message(self, conversation_id: int, role: str, content: str) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"INSERT INTO messages (conversation_id, role, content) VALUES (%s, %s, %s) RETURNING id",
(conversation_id, role, content),
)
row = cur.fetchone()
msg_id: int = row[0] if row else 0
conn.commit()
cur.close()
return msg_id
def get_conversation_messages(
self, conversation_id: int, limit: int = 50
) -> List[Dict]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT role, content, timestamp FROM messages WHERE conversation_id = %s ORDER BY timestamp ASC LIMIT %s",
(conversation_id, limit),
)
rows = cur.fetchall()
cur.close()
return [{"role": r[0], "content": r[1], "timestamp": str(r[2])} for r in rows]
def get_recent_messages(self, user_id: int, limit: int = 10) -> List[Dict]:
"""Last N messages across ALL of a user's conversations, in chronological order."""
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT m.role, m.content, m.timestamp
FROM messages m
JOIN conversations c ON m.conversation_id = c.id
WHERE c.user_id = %s
ORDER BY m.timestamp DESC
LIMIT %s""",
(user_id, limit),
)
rows = cur.fetchall()
cur.close()
msgs = [{"role": r[0], "content": r[1], "timestamp": str(r[2])} for r in rows]
return list(reversed(msgs))
def count_conversation_messages(self, conversation_id: int) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT COUNT(*) FROM messages WHERE conversation_id = %s",
(conversation_id,),
)
count = cur.fetchone()[0]
cur.close()
return count
def get_conversation_turns(
self, conversation_id: int, limit: int = 20, offset_from_end: int = 0
) -> List[Dict]:
"""Last N turns within a single conversation, in chronological order."""
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT role, content, timestamp, id
FROM messages
WHERE conversation_id = %s
ORDER BY id DESC
LIMIT %s OFFSET %s""",
(conversation_id, limit, offset_from_end),
)
rows = cur.fetchall()
cur.close()
msgs = [
{"role": r[0], "content": r[1], "timestamp": str(r[2]), "id": r[3]}
for r in reversed(rows)
]
return msgs
# ------------------------------------------------------------------
# Episodic memory — conversation summaries
# ------------------------------------------------------------------
def get_conversation_summary(self, conversation_id: int) -> Optional[str]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT summary_text FROM conversation_summaries
WHERE conversation_id = %s ORDER BY updated_at DESC LIMIT 1""",
(conversation_id,),
)
row = cur.fetchone()
cur.close()
return row[0] if row else None
def save_conversation_summary(
self,
conversation_id: int,
user_id: int,
summary_text: str,
message_count: int = 0,
):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""INSERT INTO conversation_summaries
(conversation_id, user_id, summary_text, message_count)
VALUES (%s, %s, %s, %s)
ON CONFLICT (conversation_id)
DO UPDATE SET
summary_text = EXCLUDED.summary_text,
message_count = EXCLUDED.message_count,
updated_at = CURRENT_TIMESTAMP""",
(conversation_id, user_id, summary_text, message_count),
)
conn.commit()
cur.close()
# ------------------------------------------------------------------
# Semantic memory — user facts
# ------------------------------------------------------------------
def add_user_fact(
self,
user_id: int,
content: str,
category: str = "general",
importance: float = 0.5,
source_conv_id: Optional[int] = None,
):
"""Insert a fact if it doesn't already exist (same user + same content)."""
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""INSERT INTO user_facts
(user_id, category, content, importance, source_conv_id)
VALUES (%s, %s, %s, %s, %s)
ON CONFLICT (user_id, content)
DO UPDATE SET
category = EXCLUDED.category,
importance = GREATEST(user_facts.importance, EXCLUDED.importance),
source_conv_id = COALESCE(EXCLUDED.source_conv_id, user_facts.source_conv_id),
last_reinforced = CURRENT_TIMESTAMP""",
(user_id, category, content, importance, source_conv_id),
)
conn.commit()
cur.close()
def get_user_facts(
self, user_id: int, limit: int = 8, category: Optional[str] = None
) -> List[Dict]:
"""Top facts for a user, ordered by importance then recency."""
with self._conn() as conn:
cur = conn.cursor()
if category:
cur.execute(
"""SELECT category, content, importance, is_pinned
FROM user_facts WHERE user_id = %s AND category = %s
ORDER BY is_pinned DESC, importance DESC, last_reinforced DESC
LIMIT %s""",
(user_id, category, limit),
)
else:
cur.execute(
"""SELECT category, content, importance, is_pinned
FROM user_facts WHERE user_id = %s
ORDER BY is_pinned DESC, importance DESC, last_reinforced DESC
LIMIT %s""",
(user_id, limit),
)
rows = cur.fetchall()
cur.close()
return [
{"category": r[0], "content": r[1], "importance": r[2], "is_pinned": r[3]}
for r in rows
]
def delete_user_fact(self, user_id: int, content: str) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"DELETE FROM user_facts WHERE user_id = %s AND content = %s",
(user_id, content),
)
deleted = cur.rowcount > 0
conn.commit()
cur.close()
return deleted
def get_conversation_title(self, conversation_id: int) -> Optional[str]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT title FROM conversations WHERE id = %s",
(conversation_id,),
)
row = cur.fetchone()
cur.close()
return row[0] if row else None
def get_title_sample_messages(self, conversation_id: int) -> List[Dict]:
"""First message + last 4 messages for title generation sampling."""
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT role, content, timestamp FROM messages
WHERE conversation_id = %s
ORDER BY timestamp ASC""",
(conversation_id,),
)
rows = cur.fetchall()
cur.close()
if not rows:
return []
msgs = [{"role": r[0], "content": r[1], "timestamp": str(r[2])} for r in rows]
if len(msgs) <= 5:
return msgs
return [msgs[0]] + msgs[-4:]
# ------------------------------------------------------------------
# User profile
# ------------------------------------------------------------------
def get_user_profile(self, user_id: int) -> str:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT summary_text FROM user_profiles WHERE user_id = %s",
(user_id,),
)
row = cur.fetchone()
cur.close()
return row[0] if row else ""
def update_user_profile(self, user_id: int, summary_text: str):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE user_profiles SET summary_text = %s, last_updated = CURRENT_TIMESTAMP WHERE user_id = %s",
(summary_text, user_id),
)
conn.commit()
cur.close()
def update_username(self, user_id: int, username: str) -> bool:
with self._conn() as conn:
cur = conn.cursor()
try:
cur.execute(
"UPDATE users SET username = %s WHERE id = %s",
(username, user_id),
)
conn.commit()
return True
except Exception:
conn.rollback()
return False
finally:
cur.close()
def update_password(self, user_id: int, password_hash: str) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE users SET password_hash = %s WHERE id = %s",
(password_hash, user_id),
)
success = cur.rowcount > 0
conn.commit()
cur.close()
return success
def update_email(self, user_id: int, email: Optional[str]) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE users SET email = %s WHERE id = %s",
(email, user_id),
)
success = cur.rowcount > 0
conn.commit()
cur.close()
return success
# ------------------------------------------------------------------
# Semantic memory
# ------------------------------------------------------------------
def add_memory(
self, user_id: int, text: str, metadata: Optional[Dict[str, Any]] = None
):
embedding_json = json.dumps(self._embed(text))
metadata_json = json.dumps(metadata or {})
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"INSERT INTO memories (user_id, content, embedding, metadata) VALUES (%s, %s, %s, %s)",
(user_id, text, embedding_json, metadata_json),
)
conn.commit()
cur.close()
def search_memories(
self, user_id: int, query: str, n_results: int = 5
) -> List[Dict]:
query_vec = self._embed(query)
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT content, embedding, metadata FROM memories WHERE user_id = %s",
(user_id,),
)
rows = cur.fetchall()
cur.close()
scored = []
for content, emb_json, meta_json in rows:
sim = self._cosine(query_vec, json.loads(emb_json))
scored.append(
{
"content": content,
"metadata": json.loads(meta_json) if meta_json else {},
"similarity": sim,
}
)
scored.sort(key=lambda x: x["similarity"], reverse=True)
return [m for m in scored[:n_results] if m["similarity"] > 0.3]
def create_guest_user(self, ip: str) -> int:
import uuid
username = f"guest_{uuid.uuid4().hex[:12]}"
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"INSERT INTO users (username, password_hash, is_guest, guest_ip) VALUES (%s, '', TRUE, %s) RETURNING id",
(username, ip),
)
row = cur.fetchone()
user_id: int = row[0] if row else 0
cur.execute(
"INSERT INTO user_profiles (user_id, summary_text) VALUES (%s, '')",
(user_id,),
)
conn.commit()
cur.close()
return user_id
def get_or_create_guest_user(self, ip: str) -> int:
"""Look up or create a guest user for a given IP address.
Reuses the most recent guest user for this IP so that the per-user
message limit is enforced across requests from the same visitor.
"""
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT id FROM users WHERE is_guest = TRUE AND guest_ip = %s ORDER BY created_at DESC LIMIT 1",
(ip,),
)
row = cur.fetchone()
if row:
user_id: int = row[0]
cur.close()
return user_id
cur.close()
return self.create_guest_user(ip)
def convert_guest_to_user(
self, user_id: int, username: str, password_hash: str
) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE users SET username = %s, password_hash = %s, is_guest = FALSE, guest_ip = NULL WHERE id = %s AND is_guest = TRUE",
(username, password_hash, user_id),
)
success = cur.rowcount > 0
conn.commit()
cur.close()
return success
def is_guest_user(self, user_id: int) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute("SELECT is_guest FROM users WHERE id = %s", (user_id,))
row = cur.fetchone()
cur.close()
return row[0] if row else False
def count_ip_guest_sessions(self, ip: str, hours: int = 24) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT COUNT(*) FROM users
WHERE guest_ip = %s AND is_guest = TRUE
AND created_at > NOW() - INTERVAL '%s hours'""",
(ip, hours),
)
count = cur.fetchone()[0]
cur.close()
return count
def log_guest_ip(self, ip: str):
with self._conn() as conn:
cur = conn.cursor()
cur.execute("INSERT INTO guest_ip_log (ip) VALUES (%s)", (ip,))
conn.commit()
cur.close()
def count_user_messages(self, user_id: int) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT COUNT(*) FROM messages m
JOIN conversations c ON m.conversation_id = c.id
WHERE c.user_id = %s AND m.role = 'user'""",
(user_id,),
)
count = cur.fetchone()[0]
cur.close()
return count
def cleanup_expired_guests(self, hours: int = 48):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""DELETE FROM users
WHERE is_guest = TRUE AND created_at < NOW() - INTERVAL '%s hours'""",
(hours,),
)
conn.commit()
cur.close()
def create_share_token(self, user_id: int, conversation_id: int) -> str:
import uuid
token = uuid.uuid4().hex
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"INSERT INTO shared_conversations (token, user_id, conversation_id) VALUES (%s, %s, %s)",
(token, user_id, conversation_id),
)
conn.commit()
cur.close()
return token
def get_shared_conversation(self, token: str) -> Optional[Dict]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT c.title, c.id FROM shared_conversations sc
JOIN conversations c ON sc.conversation_id = c.id
WHERE sc.token = %s""",
(token,),
)
row = cur.fetchone()
cur.close()
if not row:
return None
conv_id = row[1]
title = row[0]
messages = self.get_conversation_messages(conv_id)
return {"title": title, "messages": messages}
def get_user_by_id(self, user_id: int) -> Optional[Dict]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT id, username, is_guest, is_admin, stripe_customer_id,
subscription_status, subscription_plan, subscription_id,
current_period_end, free_messages_used, created_at, email
FROM users WHERE id = %s""",
(user_id,),
)
row = cur.fetchone()
cur.close()
if not row:
return None
return {
"id": row[0],
"username": row[1],
"is_guest": row[2],
"is_admin": row[3],
"stripe_customer_id": row[4],
"subscription_status": row[5],
"subscription_plan": row[6],
"subscription_id": row[7],
"current_period_end": str(row[8]) if row[8] else None,
"free_messages_used": row[9] or 0,
"created_at": str(row[10]) if row[10] else None,
"email": row[11],
}
def get_free_messages_used(self, user_id: int) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT free_messages_used FROM users WHERE id = %s", (user_id,)
)
row = cur.fetchone()
cur.close()
return row[0] if row and row[0] is not None else 0
def increment_free_messages_used(self, user_id: int) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""UPDATE users SET free_messages_used = COALESCE(free_messages_used, 0) + 1
WHERE id = %s RETURNING free_messages_used""",
(user_id,),
)
row = cur.fetchone()
conn.commit()
cur.close()
return row[0] if row else 0
def try_consume_free_message(self, user_id: int) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""UPDATE users
SET free_messages_used = COALESCE(free_messages_used, 0) + 1
WHERE id = %s AND COALESCE(free_messages_used, 0) < %s
RETURNING free_messages_used""",
(user_id, config.FREE_MESSAGE_LIMIT),
)
success = cur.fetchone() is not None
conn.commit()
cur.close()
return success
def refund_free_message(self, user_id: int):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""UPDATE users
SET free_messages_used = GREATEST(COALESCE(free_messages_used, 0) - 1, 0)
WHERE id = %s""",
(user_id,),
)
conn.commit()
cur.close()
def set_stripe_customer_id(self, user_id: int, customer_id: str):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE users SET stripe_customer_id = %s WHERE id = %s",
(customer_id, user_id),
)
conn.commit()
cur.close()
def try_consume_subscriber_message(self, user_id: int) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""UPDATE users
SET sub_messages_used = CASE
WHEN sub_period_start IS NULL
OR sub_period_start < DATE_TRUNC('month', CURRENT_DATE)
THEN 1
ELSE COALESCE(sub_messages_used, 0) + 1
END,
sub_period_start = CASE
WHEN sub_period_start IS NULL
OR sub_period_start < DATE_TRUNC('month', CURRENT_DATE)
THEN DATE_TRUNC('month', CURRENT_DATE)
ELSE sub_period_start
END
WHERE id = %s
RETURNING sub_messages_used""",
(user_id,),
)
row = cur.fetchone()
used = row[0] if row else 0
success = used <= config.SUBSCRIBER_MONTHLY_LIMIT
if success:
conn.commit()
else:
conn.rollback()
cur.close()
return success
def refund_subscriber_message(self, user_id: int):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""UPDATE users
SET sub_messages_used = GREATEST(COALESCE(sub_messages_used, 0) - 1, 0)
WHERE id = %s""",
(user_id,),
)
conn.commit()
cur.close()
def get_subscriber_messages_used(self, user_id: int) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT sub_messages_used FROM users
WHERE id = %s
AND (sub_period_start IS NULL
OR sub_period_start >= DATE_TRUNC('month', CURRENT_DATE))""",
(user_id,),
)
row = cur.fetchone()
cur.close()
return row[0] if row and row[0] is not None else 0
def update_subscription(
self,
user_id: int,
status: Optional[str] = None,
plan: Optional[str] = None,
subscription_id: Optional[str] = None,
current_period_end: Optional[str] = None,
):
with self._conn() as conn:
cur = conn.cursor()
updates = []
params = []
if status is not None:
updates.append("subscription_status = %s")
params.append(status)
if plan is not None:
updates.append("subscription_plan = %s")
params.append(plan)
if subscription_id is not None:
updates.append("subscription_id = %s")
params.append(subscription_id)
if current_period_end is not None:
updates.append("current_period_end = %s")
params.append(current_period_end)
if not updates:
return
params.append(user_id)
cur.execute(
f"UPDATE users SET {', '.join(updates)} WHERE id = %s",
params,
)
conn.commit()
cur.close()
def clear_subscription(self, user_id: int):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""UPDATE users SET subscription_status = NULL, subscription_plan = NULL,
subscription_id = NULL, current_period_end = NULL WHERE id = %s""",
(user_id,),
)
conn.commit()
cur.close()
def get_user_by_stripe_customer_id(self, customer_id: str) -> Optional[int]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT id FROM users WHERE stripe_customer_id = %s",
(customer_id,),
)
row = cur.fetchone()
cur.close()
return row[0] if row else None
def add_payment(
self,
user_id: int,
stripe_payment_id: str,
amount_cents: int,
status: str,
currency: str = "usd",
):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""INSERT INTO payment_history (user_id, stripe_payment_id, amount_cents, currency, status)
VALUES (%s, %s, %s, %s, %s)
ON CONFLICT (stripe_payment_id) DO NOTHING""",
(user_id, stripe_payment_id, amount_cents, currency, status),
)
conn.commit()
cur.close()
def get_admin_users(
self, page: int = 1, per_page: int = 20, search: str = ""
) -> Dict:
offset = (page - 1) * per_page
with self._conn() as conn:
cur = conn.cursor()
search_clause = ""
params = []
if search:
search_clause = "WHERE username ILIKE %s"
params.append(f"%{search}%")
params.extend([per_page, offset])
cur.execute(
f"""SELECT id, username, is_guest, is_admin, subscription_status, subscription_plan,
free_messages_used, created_at, current_period_end
FROM users {search_clause}
ORDER BY created_at DESC
LIMIT %s OFFSET %s""",
params,
)
rows = cur.fetchall()
cur.execute(
f"SELECT COUNT(*) FROM users {search_clause}",
params[:1] if search else [],
)
total = cur.fetchone()[0]
cur.close()
users = [
{
"id": r[0],
"username": r[1],
"is_guest": r[2],
"is_admin": r[3],
"subscription_status": r[4],
"subscription_plan": r[5],
"free_messages_used": r[6] or 0,
"created_at": str(r[7]) if r[7] else None,
"current_period_end": str(r[8]) if r[8] else None,
}
for r in rows
]
return {"users": users, "total": total, "page": page, "per_page": per_page}
def get_admin_stats(self) -> Dict:
with self._conn() as conn:
cur = conn.cursor()
cur.execute("SELECT COUNT(*) FROM users WHERE is_guest = FALSE")
total_users = cur.fetchone()[0]
cur.execute("SELECT COUNT(*) FROM users WHERE is_guest = TRUE")
total_guests = cur.fetchone()[0]
cur.execute(
"SELECT COUNT(*) FROM users WHERE subscription_status = 'active'"
)
active_subscribers = cur.fetchone()[0]
cur.execute(
"SELECT COUNT(*) FROM users WHERE subscription_plan = 'monthly'"
)
monthly_subscribers = cur.fetchone()[0]
cur.execute("SELECT COUNT(*) FROM users WHERE subscription_plan = 'annual'")
annual_subscribers = cur.fetchone()[0]
cur.execute("SELECT COUNT(*) FROM messages WHERE role = 'user'")
total_messages = cur.fetchone()[0]
cur.execute("SELECT COUNT(*) FROM conversations")
total_conversations = cur.fetchone()[0]
cur.execute(
"""SELECT COALESCE(SUM(amount_cents), 0) FROM payment_history
WHERE status = 'succeeded'"""
)
total_revenue_cents = cur.fetchone()[0]
cur.close()
return {
"total_users": total_users,
"total_guests": total_guests,
"active_subscribers": active_subscribers,
"monthly_subscribers": monthly_subscribers,
"annual_subscribers": annual_subscribers,
"total_messages": total_messages,
"total_conversations": total_conversations,
"total_revenue_cents": total_revenue_cents,
}
def set_user_admin(self, user_id: int, is_admin: bool):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE users SET is_admin = %s WHERE id = %s",
(is_admin, user_id),
)
conn.commit()
cur.close()
def delete_user(self, user_id: int) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute("DELETE FROM user_profiles WHERE user_id = %s", (user_id,))
cur.execute("DELETE FROM memories WHERE user_id = %s", (user_id,))
cur.execute(
"DELETE FROM shared_conversations WHERE user_id = %s", (user_id,)
)
cur.execute(
"""DELETE FROM messages WHERE conversation_id IN
(SELECT id FROM conversations WHERE user_id = %s)""",
(user_id,),
)
cur.execute("DELETE FROM conversations WHERE user_id = %s", (user_id,))
cur.execute("DELETE FROM payment_history WHERE user_id = %s", (user_id,))
cur.execute("DELETE FROM users WHERE id = %s", (user_id,))
success = cur.rowcount > 0
conn.commit()
cur.close()
return success
def get_user_detail(self, user_id: int) -> Optional[Dict]:
user = self.get_user_by_id(user_id)
if not user:
return None
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""SELECT id, title, started_at FROM conversations
WHERE user_id = %s ORDER BY started_at DESC LIMIT 10""",
(user_id,),
)
conv_rows = cur.fetchall()
cur.execute(
"SELECT summary_text FROM user_profiles WHERE user_id = %s", (user_id,)
)
profile_row = cur.fetchone()
cur.execute(
"""SELECT COUNT(*) FROM messages m
JOIN conversations c ON m.conversation_id = c.id
WHERE c.user_id = %s AND m.role = 'user'""",
(user_id,),
)
total_messages = cur.fetchone()[0]
cur.close()
conversations = [
{"id": r[0], "title": r[1], "started_at": str(r[2])} for r in conv_rows
]
return {
**user,
"conversations": conversations,
"profile_summary": profile_row[0] if profile_row else "",
"total_messages": total_messages,
}
# ------------------------------------------------------------------
# Admin helpers
# ------------------------------------------------------------------
def count_admins(self) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute("SELECT COUNT(*) FROM users WHERE is_admin = TRUE")
count = cur.fetchone()[0]
cur.close()
return count
def get_admin_ids(self, exclude_user_id: Optional[int] = None) -> List[int]:
with self._conn() as conn:
cur = conn.cursor()
if exclude_user_id:
cur.execute(
"SELECT id FROM users WHERE is_admin = TRUE AND id != %s",
(exclude_user_id,),
)
else:
cur.execute("SELECT id FROM users WHERE is_admin = TRUE")
ids = [r[0] for r in cur.fetchall()]
cur.close()
return ids
def is_last_admin(self, user_id: int) -> bool:
"""Return True if user_id is the sole remaining admin."""
user = self.get_user_by_id(user_id)
if not user or not user.get("is_admin"):
return False
return self.count_admins() <= 1
# ------------------------------------------------------------------
# Admin audit log
# ------------------------------------------------------------------
def log_admin_action(
self,
admin_id: Optional[int],
action: str,
target_user_id: Optional[int] = None,
ip_address: Optional[str] = None,
details: Optional[str] = None,
):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""INSERT INTO admin_audit_log
(admin_id, action, target_user_id, ip_address, details)
VALUES (%s, %s, %s, %s, %s)""",
(admin_id, action, target_user_id, ip_address, details),
)
conn.commit()
cur.close()
def get_audit_logs(
self,
admin_id: Optional[int] = None,
action: Optional[str] = None,
limit: int = 50,
) -> List[Dict]:
with self._conn() as conn:
cur = conn.cursor()
conditions = []
params: list = []
if admin_id:
conditions.append("al.admin_id = %s")
params.append(admin_id)
if action:
conditions.append("al.action = %s")
params.append(action)
where = ("WHERE " + " AND ".join(conditions)) if conditions else ""
params.append(limit)
cur.execute(
f"""SELECT al.id, al.admin_id, u.username, al.action,
al.target_user_id, al.ip_address, al.details, al.created_at
FROM admin_audit_log al
LEFT JOIN users u ON al.admin_id = u.id
{where}
ORDER BY al.created_at DESC
LIMIT %s""",
params,
)
rows = cur.fetchall()
cur.close()
return [
{
"id": r[0],
"admin_id": r[1],
"admin_username": r[2],
"action": r[3],
"target_user_id": r[4],
"ip_address": r[5],
"details": r[6],
"created_at": str(r[7]) if r[7] else None,
}
for r in rows
]
# ------------------------------------------------------------------
# TOTP helpers
# ------------------------------------------------------------------
def set_pending_totp_secret(self, user_id: int, secret: str):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE users SET totp_pending_secret = %s WHERE id = %s",
(secret, user_id),
)
conn.commit()
cur.close()
def get_totp_secret(self, user_id: int) -> Optional[str]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute("SELECT totp_secret FROM users WHERE id = %s", (user_id,))
row = cur.fetchone()
cur.close()
return row[0] if row else None
def get_pending_totp_secret(self, user_id: int) -> Optional[str]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT totp_pending_secret FROM users WHERE id = %s", (user_id,)
)
row = cur.fetchone()
cur.close()
return row[0] if row else None
def enable_totp_from_pending(self, user_id: int) -> bool:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"""UPDATE users
SET totp_secret = totp_pending_secret,
totp_pending_secret = NULL
WHERE id = %s AND totp_pending_secret IS NOT NULL""",
(user_id,),
)
success = cur.rowcount > 0
conn.commit()
cur.close()
return success
def clear_totp_secret(self, user_id: int):
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE users SET totp_secret = NULL, totp_pending_secret = NULL WHERE id = %s",
(user_id,),
)
conn.commit()
cur.close()
# ------------------------------------------------------------------
# OAuth accounts
# ------------------------------------------------------------------
def get_oauth_account(self, provider: str, provider_user_id: str) -> Optional[Dict]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT id, user_id, provider, provider_user_id, email FROM oauth_accounts WHERE provider = %s AND provider_user_id = %s",
(provider, provider_user_id),
)
row = cur.fetchone()
cur.close()
if not row:
return None
return {
"id": row[0],
"user_id": row[1],
"provider": row[2],
"provider_user_id": row[3],
"email": row[4],
}
def get_user_by_email(self, email: str) -> Optional[Dict]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT id, username, password_hash, is_guest, email FROM users WHERE email = %s",
(email,),
)
row = cur.fetchone()
cur.close()
if not row:
return None
return {
"id": row[0],
"username": row[1],
"password_hash": row[2],
"is_guest": row[3],
"email": row[4],
}
def create_oauth_account(
self,
user_id: int,
provider: str,
provider_user_id: str,
email: Optional[str] = None,
) -> int:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"INSERT INTO oauth_accounts (user_id, provider, provider_user_id, email) VALUES (%s, %s, %s, %s) RETURNING id",
(user_id, provider, provider_user_id, email),
)
row = cur.fetchone()
oauth_id: int = row[0] if row else 0
conn.commit()
cur.close()
return oauth_id
def get_oauth_accounts_for_user(self, user_id: int) -> List[Dict]:
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT id, provider, provider_user_id, email, created_at FROM oauth_accounts WHERE user_id = %s",
(user_id,),
)
rows = cur.fetchall()
cur.close()
return [
{
"id": r[0],
"provider": r[1],
"provider_user_id": r[2],
"email": r[3],
"created_at": str(r[4]) if r[4] else None,
}
for r in rows
]
def create_oauth_user(self, username: str, email: Optional[str] = None) -> int:
"""Create a new user for OAuth sign-in (no password)."""
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"INSERT INTO users (username, password_hash, email) VALUES (%s, '', %s) RETURNING id",
(username, email),
)
row = cur.fetchone()
user_id: int = row[0] if row else 0
cur.execute(
"INSERT INTO user_profiles (user_id, summary_text) VALUES (%s, '')",
(user_id,),
)
conn.commit()
cur.close()
return user_id
def convert_guest_to_oauth(
self, user_id: int, username: str, email: Optional[str] = None
) -> bool:
"""Convert a guest user to a full user via OAuth (no password)."""
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"UPDATE users SET username = %s, password_hash = '', email = COALESCE(%s, email), is_guest = FALSE, guest_ip = NULL WHERE id = %s AND is_guest = TRUE",
(username, email, user_id),
)
success = cur.rowcount > 0
conn.commit()
cur.close()
return success
def migrate_guest_to_user(self, guest_user_id: int, target_user_id: int) -> bool:
if guest_user_id == target_user_id:
return False
with self._conn() as conn:
cur = conn.cursor()
cur.execute(
"SELECT is_guest FROM users WHERE id = %s",
(guest_user_id,),
)
row = cur.fetchone()
if not row or not row[0]:
cur.close()
return False
cur.execute(
"UPDATE conversations SET user_id = %s WHERE user_id = %s",
(target_user_id, guest_user_id),
)
cur.execute(
"UPDATE memories SET user_id = %s WHERE user_id = %s",
(target_user_id, guest_user_id),
)
cur.execute(
"UPDATE shared_conversations SET user_id = %s WHERE user_id = %s",
(target_user_id, guest_user_id),
)
cur.execute(
"SELECT summary_text FROM user_profiles WHERE user_id = %s",
(guest_user_id,),
)
guest_profile_row = cur.fetchone()
guest_summary = (
guest_profile_row[0].strip()
if guest_profile_row and guest_profile_row[0]
else ""
)
cur.execute(
"SELECT summary_text FROM user_profiles WHERE user_id = %s",
(target_user_id,),
)
target_profile_row = cur.fetchone()
target_summary = (
target_profile_row[0].strip()
if target_profile_row and target_profile_row[0]
else ""
)
if guest_summary:
merged_summary = guest_summary
if target_summary and target_summary != guest_summary:
merged_summary = f"{target_summary}\n\n{guest_summary}"
cur.execute(
"UPDATE user_profiles SET summary_text = %s, last_updated = CURRENT_TIMESTAMP WHERE user_id = %s",
(merged_summary, target_user_id),
)
cur.execute(
"DELETE FROM user_profiles WHERE user_id = %s", (guest_user_id,)
)
cur.execute(
"DELETE FROM users WHERE id = %s AND is_guest = TRUE", (guest_user_id,)
)
conn.commit()
cur.close()
return True
def close(self):
self._pool.closeall()
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