Add config and client injection with test reorganization.

Introduce typed config objects, optional adapter injection, and .env loading to simplify testing while preserving env-based defaults for production usage.

Co-authored-by: Cursor <[email protected]>

python_repositories/config/__init__.py

@@ -0,0 +1,9 @@
+from .dotenv_loader import load_dotenv as load_dotenv
+from .minio_config import MinioConfig as MinioConfig
+from .redis_config import RedisConfig as RedisConfig
+
+__all__ = [
+    "MinioConfig",
+    "RedisConfig",
+    "load_dotenv",
+]

python_repositories/config/dotenv_loader.py

@@ -0,0 +1,14 @@
+"""Load environment variables from a .env file."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+from dotenv import load_dotenv as _load_dotenv
+
+
+def load_dotenv(path: str | Path | None = None) -> bool:
+    """Load .env into os.environ. Idempotent; returns True if a file was loaded."""
+    if path is None:
+        return bool(_load_dotenv())
+    return bool(_load_dotenv(path))

python_repositories/config/minio_config.py

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+"""MinIO connection configuration."""
+
+from __future__ import annotations
+
+import os
+from dataclasses import dataclass
+
+from python_utils import check_env
+
+from python_repositories.config.dotenv_loader import load_dotenv
+
+
+@dataclass(frozen=True)
+class MinioConfig:
+    """Configuration for connecting to MinIO."""
+
+    endpoint: str
+    access_key: str
+    secret_key: str
+    bucket: str
+    secure: bool = False
+
+    @classmethod
+    def from_env(
+        cls,
+        endpoint_env_var_name: str = "MINIO_ENDPOINT",
+        access_key_env_var_name: str = "MINIO_ACCESS_KEY",
+        secret_key_env_var_name: str = "MINIO_SECRET_KEY",
+        bucket_env_var_name: str = "MINIO_BUCKET",
+        *,
+        use_dotenv: bool = True,
+    ) -> MinioConfig:
+        """Load configuration from environment variables."""
+        if use_dotenv:
+            load_dotenv()
+        env_var_names = {
+            endpoint_env_var_name,
+            access_key_env_var_name,
+            secret_key_env_var_name,
+            bucket_env_var_name,
+        }
+        check_env(env_var_names)
+        return cls(
+            endpoint=str(os.getenv(endpoint_env_var_name)),
+            access_key=str(os.getenv(access_key_env_var_name)),
+            secret_key=str(os.getenv(secret_key_env_var_name)),
+            bucket=str(os.getenv(bucket_env_var_name)),
+        )

python_repositories/config/redis_config.py

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+"""Redis connection configuration."""
+
+from __future__ import annotations
+
+import os
+from dataclasses import dataclass
+
+from python_utils import check_env
+
+from python_repositories.config.dotenv_loader import load_dotenv
+
+
+@dataclass(frozen=True)
+class RedisConfig:
+    """Configuration for connecting to Redis."""
+
+    uri: str
+
+    @classmethod
+    def from_env(
+        cls,
+        uri_env_var_name: str = "REDIS_URI",
+        *,
+        use_dotenv: bool = True,
+    ) -> RedisConfig:
+        """Load configuration from environment variables."""
+        if use_dotenv:
+            load_dotenv()
+        check_env(uri_env_var_name)
+        return cls(uri=str(os.getenv(uri_env_var_name)))