Fix configs validation (#66)

* fix configs validation of models

* added validation for defaults configs

* better error handling in main if any of error occurs during setup

src/app/__main__.py

@@ -1,11 +1,13 @@
 import asyncio
 import logging
+import sys
 from dotenv import load_dotenv
 from app.configs import AppConfig
 from app.interface import *
 
 
 if __name__ == "__main__":
+    try:
         # =====================
         load_dotenv()
         configs = AppConfig.load()
@@ -30,3 +32,7 @@ if __name__ == "__main__":
                 logging.info("Shutting down due to KeyboardInterrupt")
         finally:
             gradio.close()
+
+    except Exception as e:
+        logging.error(f"Application failed to start: {e}")
+        sys.exit(1)

src/app/configs.py

@@ -78,36 +78,38 @@ class Strategy(BaseModel):
 
 class ModelsConfig(BaseModel):
     gemini: list[AppModel] = [AppModel()]
-    gpt: list[AppModel] = [AppModel(name="gpt-4o", label="OpenAIChat")]
+    gpt: list[AppModel] = []
-    mistral: list[AppModel] = [AppModel(name="mistral-large-latest", label="Mistral")]
+    mistral: list[AppModel] = []
-    deepseek: list[AppModel] = [AppModel(name="deepseek-chat", label="DeepSeek")]
+    deepseek: list[AppModel] = []
-    # xai: list[AppModel] = [AppModel(name="grok-3", label="xAI")]
     ollama: list[AppModel] = []
 
     @property
     def all_models(self) -> list[AppModel]:
-        return self.gemini + self.ollama + self.gpt + self.mistral + self.deepseek # + self.xai
+        return self.gemini + self.ollama + self.gpt + self.mistral + self.deepseek
 
     def validate_models(self) -> None:
         """
-        Validate the configured models for each provider.
+        Validate the configured models for each supported provider.
         """
         self.__validate_online_models(self.gemini, clazz=Gemini, key="GOOGLE_API_KEY")
         self.__validate_online_models(self.gpt, clazz=OpenAIChat, key="OPENAI_API_KEY")
         self.__validate_online_models(self.mistral, clazz=MistralChat, key="MISTRAL_API_KEY")
         self.__validate_online_models(self.deepseek, clazz=DeepSeek, key="DEEPSEEK_API_KEY")
-        # self.__validate_online_models(self.xai, clazz=xAI, key="XAI_API_KEY")
-
         self.__validate_ollama_models()
 
     def __validate_online_models(self, models: list[AppModel], clazz: type[Model], key: str | None = None) -> None:
         """
-        Validate models for online providers like Gemini.
+        Validate models for online providers that require an API key.
+        If the models list is empty, no validation is performed and the method returns immediately.
+        If the API key is not set, the models list will be cleared.
         Args:
             models: list of AppModel instances to validate
             clazz: class of the model (e.g. Gemini)
             key: API key required for the provider (optional)
         """
+        if not models:
+            return
+
         if key and os.getenv(key) is None:
             log.warning(f"No {key} set in environment variables for {clazz.__name__}.")
             models.clear()
@@ -131,7 +133,7 @@ class ModelsConfig(BaseModel):
                 else:
                     not_availables.append(model.name)
             if not_availables:
-                log.warning(f"Ollama models not available: {not_availables}")
+                log.warning(f"Ollama models not available, but defined in configs: {not_availables}")
 
             self.ollama = [model for model in self.ollama if model.model]
 
@@ -147,6 +149,28 @@ class AgentsConfigs(BaseModel):
     query_analyzer_model: str = "gemini-2.0-flash"
     report_generation_model: str = "gemini-2.0-flash"
 
+    def validate_defaults(self, configs: 'AppConfig') -> None:
+        """
+        Validate that the default models and strategy exist in the provided configurations.
+        If any default is not found, a ValueError is raised.
+        Args:
+            configs: the AppConfig instance containing models and strategies.
+        Raises:
+            ValueError if any default model or strategy is not found.
+        """
+        try:
+            configs.get_strategy_by_name(self.strategy)
+        except ValueError as e:
+            log.error(f"Default strategy '{self.strategy}' not found in configurations.")
+            raise e
+
+        for model_name in [self.team_model, self.team_leader_model, self.query_analyzer_model, self.report_generation_model]:
+            try:
+                configs.get_model_by_name(model_name)
+            except ValueError as e:
+                log.error(f"Default agent model '{model_name}' not found in configurations.")
+                raise e
+
 class AppConfig(BaseModel):
     port: int = 8000
     gradio_share: bool = False
@@ -188,6 +212,7 @@ class AppConfig(BaseModel):
         super().__init__(*args, **kwargs)
         self.set_logging_level()
         self.models.validate_models()
+        self.agents.validate_defaults(self)
         self._initialized = True
 
     def get_model_by_name(self, name: str) -> AppModel: