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from contextlib import closing
import argparse
from scripts.iib.db.datamodel import DataBase
import os
import shutil
def replace_path(old_base, new_base):
"""
Custom SQL function to replace part of a path.
Args:
old_base (str): The base part of the path to be replaced.
new_base (str): The new base part of the path.
Returns:
str: Updated path.
"""
def replace_func(path):
if path.startswith(old_base):
return new_base + path[len(old_base) :]
else:
return path
return replace_func
def update_paths(conn, table_name, old_base):
"""
Update paths in a specified SQLite table using a custom SQL function.
Args:
db_path (str): Path to the SQLite database file.
table_name (str): Name of the table containing the paths.
Returns:
None
"""
with closing(conn.cursor()) as cur:
# Use the custom function in an UPDATE statement
cur.execute(
f"UPDATE {table_name} SET path = replace_path(path) WHERE path LIKE ?",
(f"{old_base}%",),
)
# Commit the changes and close the connection
conn.commit()
def setup_parser() -> argparse.ArgumentParser:
parser = argparse.ArgumentParser(
description="Script to migrate paths in an IIB SQLite database from an old directory structure to a new one."
)
parser.add_argument(
"--db_path", type=str, help="Path to the input IIB QLite database file to be migrated. Default value is 'iib.db'.", default="iib.db"
)
parser.add_argument(
"--old_dir", type=str, help="Old base directory to be replaced in the paths.", required=True
)
parser.add_argument(
"--new_dir", type=str, help="New base directory to replace the old base directory in the paths.", required=True
)
return parser
if __name__ == "__main__":
parser = setup_parser()
args = parser.parse_args()
old_base = args.old_dir
new_base = args.new_dir
db_path = args.db_path
db_temp_path = "db_migrate_temp.db"
shutil.copy2(db_path, db_temp_path)
DataBase.path = os.path.normpath(os.path.join(os.getcwd(), db_temp_path))
conn = DataBase.get_conn()
conn.create_function("replace_path", 1, replace_path(old_base, new_base))
update_paths(conn, "image", old_base)
update_paths(conn, "extra_path", old_base)
update_paths(conn, "folders", old_base)
shutil.copy(db_temp_path, "iib.db")
# os.remove(db_temp_path)
print("Database migration completed successfully.")
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