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from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
import logging
from .core.config import settings
from .api.routes import tasks, auth, chat, conversations
from .mcp import register_all_tools
from .core.exceptions import AIProviderException
from .schemas.error import ErrorResponse
# Configure logging
logger = logging.getLogger(__name__)
app = FastAPI(
title=settings.APP_NAME,
debug=settings.DEBUG
)
# Global exception handler for AIProviderException
@app.exception_handler(AIProviderException)
async def ai_provider_exception_handler(request: Request, exc: AIProviderException):
"""Convert AIProviderException to structured ErrorResponse."""
error_response = ErrorResponse(
error_code=exc.error_code,
detail=exc.detail,
source=exc.source,
provider=exc.provider
)
logger.error(
f"AI Provider Error: {exc.error_code} - {exc.detail} "
f"(Provider: {exc.provider}, Status: {exc.status_code})"
)
return JSONResponse(
status_code=exc.status_code,
content=error_response.model_dump()
)
# Global exception handler for generic HTTPException
@app.exception_handler(Exception)
async def generic_exception_handler(request: Request, exc: Exception):
"""Catch-all exception handler for unexpected errors."""
# Log the full exception for debugging
logger.exception(f"Unhandled exception: {str(exc)}")
# Return structured error response
error_response = ErrorResponse(
error_code="INTERNAL_ERROR",
detail="An unexpected error occurred. Please try again later.",
source="INTERNAL"
)
return JSONResponse(
status_code=500,
content=error_response.model_dump()
)
@app.on_event("startup")
async def startup_event():
"""Initialize application on startup."""
logger.info("Starting application initialization...")
# Register all MCP tools with the tool registry
try:
register_all_tools()
logger.info("MCP tools registered successfully")
except Exception as e:
logger.error(f"Failed to register MCP tools: {str(e)}")
raise
logger.info("Application initialization complete")
# Configure CORS
app.add_middleware(
CORSMiddleware,
allow_origins=settings.CORS_ORIGINS.split(","),
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
# Register routes
app.include_router(auth.router)
app.include_router(tasks.router)
app.include_router(chat.router)
app.include_router(conversations.router)
@app.get("/")
async def root():
"""Root endpoint."""
return {"message": "Task CRUD API", "status": "running"}
@app.get("/health")
async def health():
"""Health check endpoint."""
return {"status": "healthy"}
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