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hechakuaa_bot/database.py
markosbenitez 7743919695 Initial commit — Pedrito Hechakuaa v0
Bot de Telegram para monitoreo de notificaciones judiciales del PJ Paraguay.
Multi-tenant con onboarding conversacional, audit log, y polling automático.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-25 10:58:32 -03:00

141 lines
4.4 KiB
Python

"""
database.py — Persistencia de tenants y preferencias.
SQLite vía aiosqlite. En v1 esto se reemplaza por Postgres con el mismo interface público.
Schema:
- tenants: un registro por abogado registrado.
Las credenciales van cifradas con vault.py (Fernet derivada por chat_id).
"""
from __future__ import annotations
from datetime import datetime, timezone
from pathlib import Path
import aiosqlite
import structlog
logger = structlog.get_logger(__name__)
_conn: aiosqlite.Connection | None = None
_CREATE_AUDIT_LOG = """
CREATE TABLE IF NOT EXISTS audit_log (
id INTEGER PRIMARY KEY AUTOINCREMENT,
timestamp TEXT NOT NULL,
timestamp_local TEXT,
chat_id INTEGER,
evento TEXT NOT NULL,
detalle TEXT,
resultado TEXT,
duracion_ms INTEGER
);
CREATE INDEX IF NOT EXISTS idx_audit_chat_id ON audit_log(chat_id);
CREATE INDEX IF NOT EXISTS idx_audit_timestamp ON audit_log(timestamp);
CREATE INDEX IF NOT EXISTS idx_audit_evento ON audit_log(evento);
"""
_CREATE_TENANTS = """
CREATE TABLE IF NOT EXISTS tenants (
chat_id INTEGER PRIMARY KEY,
nombre_preferido TEXT,
tono TEXT DEFAULT 'cotidiano',
timezone TEXT DEFAULT 'America/Asuncion',
credentials_enc TEXT,
estado TEXT DEFAULT 'pendiente',
consentimiento_aceptado INTEGER DEFAULT 0,
created_at TEXT,
last_active TEXT
);
"""
def get_conn() -> aiosqlite.Connection:
"""Retorna la conexión activa. Llamar solo después de init_db()."""
return _assert_conn()
def _now_iso() -> str:
return datetime.now(timezone.utc).isoformat()
async def init_db(db_path: Path) -> None:
"""Crear tablas si no existen. Llamar una sola vez al arrancar."""
global _conn
db_path.parent.mkdir(parents=True, exist_ok=True)
_conn = await aiosqlite.connect(str(db_path))
_conn.row_factory = aiosqlite.Row
await _conn.execute(_CREATE_TENANTS)
# CREATE INDEX no soporta executescript — ejecutar sentencias separadas
for stmt in _CREATE_AUDIT_LOG.strip().split(";"):
stmt = stmt.strip()
if stmt:
await _conn.execute(stmt)
await _conn.commit()
logger.info("database_iniciada", path=str(db_path))
def _assert_conn() -> aiosqlite.Connection:
if _conn is None:
raise RuntimeError("DB no inicializada — llamar a init_db() antes de usar database.")
return _conn
async def get_tenant(chat_id: int) -> dict | None:
"""Retorna el tenant o None si no existe."""
conn = _assert_conn()
async with conn.execute(
"SELECT * FROM tenants WHERE chat_id = ?", (chat_id,)
) as cur:
row = await cur.fetchone()
return dict(row) if row else None
async def save_tenant(chat_id: int, **fields: object) -> None:
"""
Crear o actualizar un tenant. Los kwargs son los campos de la tabla.
Hace upsert: inserta si no existe, actualiza si ya existe.
"""
conn = _assert_conn()
fields["last_active"] = _now_iso()
existing = await get_tenant(chat_id)
if existing is None:
fields.setdefault("created_at", _now_iso())
columns = ["chat_id", *fields.keys()]
placeholders = ", ".join("?" * len(columns))
values = [chat_id, *fields.values()]
await conn.execute(
f"INSERT INTO tenants ({', '.join(columns)}) VALUES ({placeholders})",
values,
)
logger.info("tenant_creado", chat_id=chat_id)
else:
set_clause = ", ".join(f"{k} = ?" for k in fields)
values_upd = [*fields.values(), chat_id]
await conn.execute(
f"UPDATE tenants SET {set_clause} WHERE chat_id = ?",
values_upd,
)
logger.info("tenant_actualizado", chat_id=chat_id, campos=list(fields.keys()))
await conn.commit()
async def list_active_tenants() -> list[dict]:
"""Retorna todos los tenants con estado='activo'."""
conn = _assert_conn()
async with conn.execute(
"SELECT * FROM tenants WHERE estado = 'activo'"
) as cur:
rows = await cur.fetchall()
return [dict(r) for r in rows]
async def delete_tenant(chat_id: int) -> None:
"""Elimina el tenant y sus datos de la DB."""
conn = _assert_conn()
await conn.execute("DELETE FROM tenants WHERE chat_id = ?", (chat_id,))
await conn.commit()
logger.info("tenant_eliminado", chat_id=chat_id)