"""FastAPI application main file."""

import sys
from pathlib import Path

# Add parent directory to path to allow imports from src
parent_dir = Path(__file__).parent.parent
if str(parent_dir) not in sys.path:
    sys.path.insert(0, str(parent_dir))

import logging
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from src.core.config import get_settings
from api.routes import router

# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
)
logger = logging.getLogger(__name__)

# Initialize FastAPI app
app = FastAPI(
    title="Agentic RAG System API",
    description="Production-ready Agentic RAG system with multiple agents and MCP servers",
    version="1.0.0",
)

# Configure CORS
settings = get_settings()
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # In production, specify allowed origins
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include routes
app.include_router(router)


@app.on_event("startup")
async def startup_event():
    """Initialize components on startup."""
    logger.info("Starting Agentic RAG System API")
    logger.info(f"API running on {settings.api_host}:{settings.api_port}")


@app.on_event("shutdown")
async def shutdown_event():
    """Cleanup on shutdown."""
    logger.info("Shutting down Agentic RAG System API")


if __name__ == "__main__":
    import uvicorn
    uvicorn.run(
        "main:app",
        host=settings.api_host,
        port=settings.api_port,
        reload=settings.api_debug,
    )