144 lines
4.7 KiB
Python
144 lines
4.7 KiB
Python
import sqlite3
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import uuid
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class SQLiteManager:
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def __init__(self, db_path=":memory:"):
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self.connection = sqlite3.connect(db_path, check_same_thread=False)
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self._migrate_history_table()
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self._create_history_table()
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def _migrate_history_table(self):
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with self.connection:
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cursor = self.connection.cursor()
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cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='history'")
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table_exists = cursor.fetchone() is not None
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if table_exists:
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# Get the current schema of the history table
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cursor.execute("PRAGMA table_info(history)")
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current_schema = {row[1]: row[2] for row in cursor.fetchall()}
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# Define the expected schema
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expected_schema = {
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"id": "TEXT",
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"memory_id": "TEXT",
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"old_memory": "TEXT",
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"new_memory": "TEXT",
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"new_value": "TEXT",
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"event": "TEXT",
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"created_at": "DATETIME",
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"updated_at": "DATETIME",
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"is_deleted": "INTEGER",
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}
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# Check if the schemas are the same
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if current_schema != expected_schema:
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# Rename the old table
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cursor.execute("ALTER TABLE history RENAME TO old_history")
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cursor.execute(
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"""
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CREATE TABLE IF NOT EXISTS history (
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id TEXT PRIMARY KEY,
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memory_id TEXT,
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old_memory TEXT,
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new_memory TEXT,
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new_value TEXT,
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event TEXT,
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created_at DATETIME,
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updated_at DATETIME,
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is_deleted INTEGER
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)
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"""
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)
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# Copy data from the old table to the new table
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cursor.execute(
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"""
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INSERT INTO history (id, memory_id, old_memory, new_memory, new_value, event, created_at, updated_at, is_deleted)
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SELECT id, memory_id, prev_value, new_value, new_value, event, timestamp, timestamp, is_deleted
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FROM old_history
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""" # noqa: E501
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)
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cursor.execute("DROP TABLE old_history")
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self.connection.commit()
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def _create_history_table(self):
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with self.connection:
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self.connection.execute(
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"""
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CREATE TABLE IF NOT EXISTS history (
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id TEXT PRIMARY KEY,
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memory_id TEXT,
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old_memory TEXT,
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new_memory TEXT,
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new_value TEXT,
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event TEXT,
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created_at DATETIME,
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updated_at DATETIME,
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is_deleted INTEGER
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)
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"""
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)
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def add_history(
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self,
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memory_id,
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old_memory,
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new_memory,
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event,
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created_at=None,
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updated_at=None,
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is_deleted=0,
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):
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with self.connection:
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self.connection.execute(
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"""
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INSERT INTO history (id, memory_id, old_memory, new_memory, event, created_at, updated_at, is_deleted)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?)
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""",
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(
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str(uuid.uuid4()),
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memory_id,
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old_memory,
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new_memory,
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event,
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created_at,
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updated_at,
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is_deleted,
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),
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)
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def get_history(self, memory_id):
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cursor = self.connection.execute(
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"""
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SELECT id, memory_id, old_memory, new_memory, event, created_at, updated_at
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FROM history
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WHERE memory_id = ?
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ORDER BY updated_at ASC
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""",
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(memory_id,),
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)
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rows = cursor.fetchall()
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return [
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{
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"id": row[0],
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"memory_id": row[1],
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"old_memory": row[2],
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"new_memory": row[3],
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"event": row[4],
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"created_at": row[5],
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"updated_at": row[6],
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}
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for row in rows
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]
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def reset(self):
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with self.connection:
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self.connection.execute("DROP TABLE IF EXISTS history")
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self._create_history_table()
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