feat: Add configuration management for Dolibarr API

src/dolibarr_mcp/config.py

@@ -0,0 +1,47 @@
+"""Configuration management for Dolibarr MCP Server."""
+
+import os
+from typing import Optional
+
+from pydantic import BaseModel, Field
+from dotenv import load_dotenv
+
+# Load environment variables from .env file
+load_dotenv()
+
+
+class Config(BaseModel):
+    """Configuration for Dolibarr MCP Server."""
+    
+    dolibarr_url: str = Field(
+        description="Dolibarr API URL",
+        default_factory=lambda: os.getenv("DOLIBARR_URL", "")
+    )
+    
+    api_key: str = Field(
+        description="Dolibarr API key",
+        default_factory=lambda: os.getenv("DOLIBARR_API_KEY", "")
+    )
+    
+    log_level: str = Field(
+        description="Logging level",
+        default_factory=lambda: os.getenv("LOG_LEVEL", "INFO")
+    )
+    
+    def validate_config(self) -> None:
+        """Validate that required configuration is present."""
+        if not self.dolibarr_url:
+            raise ValueError("DOLIBARR_URL environment variable is required")
+        
+        if not self.api_key:
+            raise ValueError("DOLIBARR_API_KEY environment variable is required")
+        
+        if not self.dolibarr_url.startswith(('http://', 'https://')):
+            raise ValueError("DOLIBARR_URL must start with http:// or https://")
+    
+    @classmethod
+    def from_env(cls) -> "Config":
+        """Create configuration from environment variables."""
+        config = cls()
+        config.validate_config()
+        return config