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import json
import os
from filelock import FileLock
DB_DIR = os.path.join(os.path.dirname(__file__), '..', 'db')
os.makedirs(DB_DIR, exist_ok=True)
class FileStorage:
def __init__(self, filename):
self.path = os.path.join(DB_DIR, filename)
self.lock = FileLock(self.path + ".lock")
def _ensure(self):
if not os.path.exists(self.path):
with open(self.path, "w") as f:
json.dump([], f)
def read_all(self):
self._ensure()
with self.lock:
with open(self.path, "r") as f:
return json.load(f)
def write_all(self, data):
with self.lock:
with open(self.path, "w") as f:
json.dump(data, f, indent=2)
def append(self, item):
data = self.read_all()
data.append(item)
self.write_all(data)
def replace(self, data):
self.write_all(data)
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