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cc15101 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 | import json
import os
import sqlite3
import uuid
from datetime import datetime
DB_PATH = os.path.join(os.path.dirname(__file__), "..", "conversation.db")
def _conn() -> sqlite3.Connection:
c = sqlite3.connect(DB_PATH)
c.row_factory = sqlite3.Row
return c
def init_db() -> None:
with _conn() as c:
c.execute(
"""
CREATE TABLE IF NOT EXISTS conversations (
id TEXT PRIMARY KEY,
title TEXT,
created_at TEXT
)
"""
)
c.execute(
"""
CREATE TABLE IF NOT EXISTS messages (
id TEXT PRIMARY KEY,
conversation_id TEXT NOT NULL,
role TEXT NOT NULL,
content TEXT NOT NULL,
created_at TEXT,
FOREIGN KEY (conversation_id) REFERENCES conversations(id)
)
"""
)
def init_users_table() -> None:
with _conn() as c:
c.execute(
"""
CREATE TABLE IF NOT EXISTS users (
id TEXT PRIMARY KEY,
username TEXT NOT NULL UNIQUE,
email TEXT NOT NULL UNIQUE,
hashed_password TEXT NOT NULL,
created_at TEXT
)
"""
)
def create_conversation(title: str = "New Chat") -> str:
cid = str(uuid.uuid4())
with _conn() as c:
c.execute(
"INSERT INTO conversations (id, title, created_at) VALUES (?, ?, ?)",
(cid, title, datetime.utcnow().isoformat()),
)
return cid
def add_message(conversation_id: str, role: str, content: str) -> str:
mid = str(uuid.uuid4())
with _conn() as c:
c.execute(
"INSERT INTO messages (id, conversation_id, role, content, created_at) VALUES (?, ?, ?, ?, ?)",
(mid, conversation_id, role, content, datetime.utcnow().isoformat()),
)
return mid
def get_messages(conversation_id: str) -> list:
with _conn() as c:
rows = c.execute(
"SELECT role, content FROM messages WHERE conversation_id = ? ORDER BY created_at",
(conversation_id,),
).fetchall()
return [dict(r) for r in rows]
def list_conversations() -> list:
with _conn() as c:
rows = c.execute(
"SELECT id, title, created_at FROM conversations ORDER BY created_at DESC"
).fetchall()
return [dict(r) for r in rows]
def get_conversation(conv_id: str) -> dict | None:
with _conn() as c:
conv = c.execute(
"SELECT id, created_at FROM conversations WHERE id = ?", (conv_id,)
).fetchone()
if conv is None:
return None
messages = c.execute(
"SELECT role, content, created_at FROM messages WHERE conversation_id = ? ORDER BY created_at ASC",
(conv_id,),
).fetchall()
return {"id": conv["id"], "created_at": conv["created_at"], "messages": [dict(m) for m in messages]}
def init_moderation_table() -> None:
"""Phase W - audit trail of moderation decisions."""
with _conn() as c:
c.execute(
"""
CREATE TABLE IF NOT EXISTS moderation_events (
id TEXT PRIMARY KEY,
created_at TEXT,
event_type TEXT, -- input | output | tool | injection | api
source TEXT, -- chat | agent | moderations | tool:<name>
identity TEXT, -- user:<id> | ip:<addr> | NULL
conversation_id TEXT,
severity TEXT,
action TEXT,
top_category TEXT,
score REAL,
categories TEXT, -- JSON
snippet TEXT -- truncated copy of the offending text
)
"""
)
def record_moderation_event(
event_type: str,
source: str,
severity: str,
action: str,
top_category: str | None,
score: float,
categories: dict | None,
identity: str | None = None,
conversation_id: str | None = None,
snippet: str | None = None,
) -> str:
eid = str(uuid.uuid4())
with _conn() as c:
c.execute(
"""
INSERT INTO moderation_events
(id, created_at, event_type, source, identity, conversation_id,
severity, action, top_category, score, categories, snippet)
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
""",
(
eid,
datetime.utcnow().isoformat(),
event_type,
source,
identity,
conversation_id,
severity,
action,
top_category,
float(score or 0.0),
json.dumps(categories or {}),
(snippet or "")[:500],
),
)
return eid
def list_moderation_events(limit: int = 100, min_severity: str | None = None) -> list:
rank = {"none": 0, "low": 1, "medium": 2, "high": 3}
floor = rank.get(min_severity, 0)
with _conn() as c:
rows = c.execute(
"SELECT * FROM moderation_events ORDER BY created_at DESC LIMIT ?",
(max(1, int(limit)),),
).fetchall()
out = []
for r in rows:
d = dict(r)
if rank.get(d.get("severity"), 0) < floor:
continue
try:
d["categories"] = json.loads(d.get("categories") or "{}")
except (TypeError, ValueError):
d["categories"] = {}
out.append(d)
return out
def create_user(username: str, email: str, hashed_password: str) -> str:
uid = str(uuid.uuid4())
with _conn() as c:
c.execute(
"INSERT INTO users (id, username, email, hashed_password, created_at) VALUES (?, ?, ?, ?, ?)",
(uid, username, email, hashed_password, datetime.utcnow().isoformat()),
)
return uid
def get_user_by_email(email: str) -> dict | None:
with _conn() as c:
row = c.execute(
"SELECT id, username, email, hashed_password FROM users WHERE email = ?",
(email,),
).fetchone()
return dict(row) if row else None
def get_user_by_id(user_id: str) -> dict | None:
with _conn() as c:
row = c.execute(
"SELECT id, username, email FROM users WHERE id = ?",
(user_id,),
).fetchone()
return dict(row) if row else None
|