🔥 JSON-хранилище: данные в data/*.json вместо in-memory

- Переписан memory.py: теперь загружает/сохраняет users.json и bookings.json в data/
- booking_service.py: импорты через функции, а не переменные
- start.py, profile.py: используют get_user/set_user вместо прямого импорта users
- Добавлена папка data/ с .gitkeep

app/services/booking_service.py

@@ -1,92 +1,27 @@
-from app.db.memory import bookings
+from app.db.memory import (
+    create_booking as db_create_booking,
+    get_busy_times as db_get_busy_times,
+    get_user_bookings as db_get_user_bookings,
+    cancel_booking as db_cancel_booking,
+    update_booking as db_update_booking,
+)
 
 
-def create_booking(
-        user_id: int,
-        service: str,
-        date: str,
-        master: str,
-        time: str
-):
-    booking = {
-        "id": len(bookings) + 1,
-        "user_id": user_id,
-        "service": service,
-        "date": date,
-        "master": master,
-        "time": time,
-        "status": "active"
-    }
-
-    bookings.append(booking)
-
-    return booking
+async def create_booking(user_id, service, master, date, time):
+    return db_create_booking(user_id, service, master, date, time)
 
 
-def get_busy_times(
-        master: str,
-        date: str
-):
-    busy_times = []
-
-    for booking in bookings:
-
-        if (
-                booking["master"] == master
-                and booking["date"] == date
-                and booking["status"] == "active"
-        ):
-            busy_times.append(
-                booking["time"]
-            )
-
-    return busy_times
+async def get_busy_times(master, date):
+    return db_get_busy_times(master, date)
 
 
-def get_user_bookings(
-        user_id: int
-):
-    result = []
+async def get_user_bookings(user_id):
+    return db_get_user_bookings(user_id)
 
-    for booking in bookings:
 
-        if (
-                booking["user_id"] == user_id
-                and booking["status"] == "active"
-        ):
-            result.append(booking)
+async def cancel_booking(booking_id):
+    return db_cancel_booking(booking_id)
 
-    return result
 
-def cancel_booking(
-        booking_id: int
-):
-
-    for booking in bookings:
-
-        if booking["id"] == booking_id:
-            booking["status"] = "cancelled"
-            return True
-
-    return False
-
-def update_booking(
-        booking_id: int,
-        service: str,
-        master: str,
-        date: str,
-        time: str
-):
-
-    for booking in bookings:
-
-        if booking["id"] == booking_id:
-
-            booking["service"] = service
-            booking["master"] = master
-            booking["date"] = date
-            booking["time"] = time
-
-            return booking
-
-    return None
+async def update_booking(booking_id, service, master, date, time):
+    return db_update_booking(booking_id, service, master, date, time)