Files
NestQuest/custom_components/nestquest/schema.py
T

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1.9 KiB
Python

"""Declarative schema DDL for the NestQuest SQLite database.
Every v1 table is declared here as plain SQL statements so later schema
tasks can append their own DDL to :data:`SCHEMA_V1_STATEMENTS` without
touching this module's tables. All statements use
``CREATE TABLE IF NOT EXISTS`` so application is idempotent; the versioned
migration runner is a separate later concern.
Timestamp policy: all timestamps are UTC ISO-8601 strings, set by the
caller/DAO rather than a DB default, per the feature guardrails. No
``length(created_at) = 25`` CHECK is added: the exact string shape
produced by callers is not fixed yet (``datetime.isoformat()`` may
include microseconds, changing the length), so enforcing a fixed length
here would reject valid values. Only non-null is enforced for now.
"""
from __future__ import annotations
from .db import NestQuestDatabase
SCHEMA_V1_CHILDREN_DDL: list[str] = [
"""
CREATE TABLE IF NOT EXISTS children (
id INTEGER PRIMARY KEY AUTOINCREMENT,
display_name TEXT NOT NULL,
colour TEXT,
avatar_ref TEXT,
sort_order INTEGER NOT NULL DEFAULT 0,
is_active INTEGER NOT NULL DEFAULT 1 CHECK (is_active IN (0, 1)),
created_at TEXT NOT NULL
)
""",
]
SCHEMA_V1_ADMIN_USERS_DDL: list[str] = [
"""
CREATE TABLE IF NOT EXISTS admin_users (
ha_user_id TEXT PRIMARY KEY NOT NULL,
added_at TEXT NOT NULL
)
""",
]
SCHEMA_V1_STATEMENTS: list[str] = [
*SCHEMA_V1_CHILDREN_DDL,
*SCHEMA_V1_ADMIN_USERS_DDL,
]
async def async_apply_ddl(
database: NestQuestDatabase, statements: list[str]
) -> None:
"""Apply each DDL statement inside one transaction on ``database``.
Idempotent: every statement is ``CREATE TABLE IF NOT EXISTS``, so
applying the same list twice leaves the schema and its rows intact.
"""
async with database.transaction():
for sql in statements:
await database.execute(sql)