chore: restructure project directory and update Dockerfile paths

app/core/config.py

@@ -0,0 +1,11 @@
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+class Settings(BaseSettings):
+    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", case_sensitive=False, extra="ignore")
+    
+    MONGODB_URI: str
+    MONGODB_DB_NAME: str
+    REDIS_URL: str
+
+
+settings = Settings()

app/core/mongodb.py

@@ -0,0 +1,24 @@
+from motor.motor_asyncio import AsyncIOMotorClient, AsyncIOMotorDatabase
+
+from core.config import settings
+
+
+class _MongoDB:
+    client: AsyncIOMotorClient | None = None
+
+    def get_database(self) -> AsyncIOMotorDatabase:
+        if self.client is None:
+            raise RuntimeError("MongoDB client has not been initialized")
+        return self.client[settings.MONGODB_DB_NAME]
+
+mongodb = _MongoDB()
+
+async def get_database() -> AsyncIOMotorDatabase:
+    return mongodb.get_database()
+
+
+async def ensure_mongodb_available() -> None:
+    client = mongodb.client
+    if client is None:
+        raise RuntimeError("MongoDB client has not been initialized")
+    await client.admin.command("ping")

app/core/redis.py

@@ -0,0 +1,22 @@
+import redis.asyncio as aioredis
+
+from core.config import settings
+
+_redis_pool: aioredis.Redis | None = None
+
+async def init_redis() -> None:
+    global _redis_pool
+    _redis_pool = aioredis.from_url(
+        settings.REDIS_URL, encoding="utf-8", decode_responses=True
+    )
+
+
+async def close_redis() -> None:
+    if _redis_pool:
+        await _redis_pool.aclose()
+
+
+async def get_redis() -> aioredis.Redis:
+    if _redis_pool is None:
+        raise RuntimeError("Redis pool has not been initialized")
+    return _redis_pool