Reworked variable system, no longer hardcoded

backend/.env.example

@@ -0,0 +1,14 @@
+# Database Configuration
+DATABASE_URL=sqlite:///./tesseract.db
+
+# API Configuration
+API_TITLE=Tesseract - Nested Todo Tree API
+API_DESCRIPTION=API for managing deeply nested todo trees
+API_VERSION=1.0.0
+
+# CORS Configuration (comma-separated list of allowed origins)
+CORS_ORIGINS=http://localhost:5173,http://localhost:3000
+
+# Server Configuration
+HOST=0.0.0.0
+PORT=8000

backend/app/database.py

@@ -1,8 +1,9 @@
 from sqlalchemy import create_engine
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import sessionmaker
+from .settings import settings
 
-SQLALCHEMY_DATABASE_URL = "sqlite:///./tesseract.db"
+SQLALCHEMY_DATABASE_URL = settings.database_url
 
 engine = create_engine(
     SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}

backend/app/main.py

@@ -6,20 +6,21 @@ import json
 
 from . import models, schemas, crud
 from .database import engine, get_db
+from .settings import settings
 
 # Create database tables
 models.Base.metadata.create_all(bind=engine)
 
 app = FastAPI(
-    title="Tesseract - Nested Todo Tree API",
-    description="API for managing deeply nested todo trees",
-    version="1.0.0"
+    title=settings.api_title,
+    description=settings.api_description,
+    version=settings.api_version
 )
 
 # CORS middleware for frontend
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=["http://localhost:5173", "http://localhost:3000"],  # Vite default port
+    allow_origins=settings.cors_origins_list,
     allow_credentials=True,
     allow_methods=["*"],
     allow_headers=["*"],

backend/app/settings.py

@@ -0,0 +1,37 @@
+from pydantic_settings import BaseSettings, SettingsConfigDict
+from typing import List
+
+
+class Settings(BaseSettings):
+    """Application settings loaded from environment variables"""
+
+    # Database Configuration
+    database_url: str = "sqlite:///./tesseract.db"
+
+    # API Configuration
+    api_title: str = "Tesseract - Nested Todo Tree API"
+    api_description: str = "API for managing deeply nested todo trees"
+    api_version: str = "1.0.0"
+
+    # CORS Configuration
+    cors_origins: str = "http://localhost:5173,http://localhost:3000"
+
+    # Server Configuration
+    host: str = "0.0.0.0"
+    port: int = 8000
+
+    model_config = SettingsConfigDict(
+        env_file=".env",
+        env_file_encoding="utf-8",
+        case_sensitive=False,
+        extra="ignore"
+    )
+
+    @property
+    def cors_origins_list(self) -> List[str]:
+        """Parse comma-separated CORS origins into a list"""
+        return [origin.strip() for origin in self.cors_origins.split(",")]
+
+
+# Global settings instance
+settings = Settings()