"""FastAPI application entry point."""
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from app.api import documents, chat, folders
from app.database import init_db
from app.config import get_settings
from app.dependencies import get_embedder_port, get_vector_db_port
import logging

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

settings = get_settings()

app = FastAPI(
    title="Ragora API",
    description="RAG-based document chat system",
    version="1.0.0"
)

# CORS
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # Configure for production
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include routers
app.include_router(documents.router)
app.include_router(chat.router)
app.include_router(folders.router)


@app.on_event("startup")
async def startup_event():
    """Initialize on startup."""
    logger.info("Starting Ragora API...")
    
    # Initialize database (optional)
    try:
        init_db()
        logger.info("Database initialized")
    except Exception as e:
        logger.warning(f"Database initialization skipped: {e}")
    
    # Initialize vector DB collection (optional)
    try:
        embedder = get_embedder_port()
        vector_db = get_vector_db_port()
        await vector_db.initialize_collection(
            settings.QDRANT_COLLECTION,
            embedder.get_dimension()
        )
        logger.info("Vector DB initialized")
    except Exception as e:
        logger.warning(f"Vector DB initialization skipped: {e}")


@app.get("/health")
def health_check():
    """Health check endpoint."""
    return {"status": "healthy"}


@app.get("/")
def root():
    """Root endpoint."""
    return {
        "message": "Ragora API",
        "version": "1.0.0",
        "docs": "/docs"
    }