Adding PowerEnum as a seperate model

The PowerEnum correctly handles some misspellings. It can be easily
expanded to handle more within the _POWER_ALIASES dict.

config.py

@@ -0,0 +1,60 @@
+import datetime
+from typing import Optional
+from pydantic_settings import BaseSettings
+from pathlib import Path
+import warnings
+from models import PowerEnum
+
+
+class Configuration(BaseSettings):
+    DEBUG: bool = False
+    log_file_path: Path | None = None
+    USE_UNFORMATTED_PROMPTS: bool = False
+
+    # API Keys to be validated. Warns if they aren't present at startup, raises ValueError if you attempt to use them when they aren't present.
+    DEEPSEEK_API_KEY: str | None = None
+    OPENAI_API_KEY: str | None = None
+    ANTHROPIC_API_KEY: str | None = None
+    GEMINI_API_KEY: str | None = None
+    OPENROUTER_API_KEY: str | None = None
+
+    def __init__(self, power_name: Optional[PowerEnum] = None, **kwargs):
+        super().__init__(**kwargs)
+        # Add a '-POWER' to the end of the file name if it's for a specific power
+        log_power_path = "-" + power_name if power_name else None
+        self.log_file_path = Path(f"./logs/{datetime.datetime.now().strftime('%d-%m-%y_%H:%M')}/logs{log_power_path} .txt")
+        # Make the path absolute, gets rid of weirdness of calling this in different places
+        self.log_file_path = self.log_file_path.resolve()
+        self.log_file_path.parent.mkdir(parents=True, exist_ok=True)
+        self.log_file_path.touch(exist_ok=True)
+
+        self._validate_api_keys()
+
+    def _validate_api_keys(self):
+        """Validate API keys at startup and issue warnings for missing keys"""
+        api_keys = [
+            "DEEPSEEK_API_KEY",
+            "OPENAI_API_KEY",
+            "ANTHROPIC_API_KEY",
+            "GEMINI_API_KEY",
+            "OPENROUTER_API_KEY",
+        ]
+
+        for key in api_keys:
+            value = super().__getattribute__(key)
+            if not value or (isinstance(value, str) and len(value) == 0):
+                warnings.warn(f"API key '{key}' is not set or is empty", UserWarning)
+
+    def __getattribute__(self, name):
+        """Override to check for empty API keys at access time"""
+        value = super().__getattribute__(name)
+
+        # If this is a _KEY, it must be not None, string, and length > 0 to return. We do not validate the correctness of the key.
+        # e.g. "thisIsAKey" is valid in this sense.
+        if name.endswith("_KEY") and (not value or (isinstance(value, str) and len(value) == 0)):
+            raise ValueError(f"API key '{name}' is not set or is empty. Please configure it before use.")
+
+        return value
+
+
+config = Configuration()