"""Main application entry point."""

from contextlib import asynccontextmanager

from fastapi import FastAPI
from src.middlewares.logging import configure_logging, get_logger
from src.middlewares.cors import add_cors_middleware
from src.middlewares.rate_limit import limiter, _rate_limit_exceeded_handler
from slowapi.errors import RateLimitExceeded
# --- pr/5 Phase 1: unwire non-AI routers (Go owns these now). ---
# Routers below are commented out, NOT deleted. The router files stay alive;
# they're just not mounted, so they also disappear from Swagger.
# from src.api.v1.document import router as document_router          # unwired: Go handles documents
# from src.api.v1.room import router as room_router                  # unwired: replaced by analysis_id
# from src.api.v1.users import router as users_router                # unwired: login moved off Python
# from src.api.v1.db_client import router as db_client_router        # unwired: Go registers DB client
# from src.api.v1.data_catalog import router as data_catalog_router  # unwired: Go handles the catalog
# NOTE: src.api.v1.analysis was DELETED (Go owns analysis + its data_sources binding).
# from src.api.v1.chat import router as chat_router  # unwired: replaced by /api/v2/chat/stream
# NOTE: src.api.v1.chat module still imported by v2 chat + /tools/help — keep the file.
from src.api.v1.report import router as report_router
from src.api.v1.tools import router as tools_router
from src.api.v1.help import router as help_router  # pr/5 Phase 2: dedicated /tools/help
from src.api.v1.traceability import router as traceability_router  # KM-691
from src.api.v2.chat import router as chat_v2_router  # pr/5 Phase 2: v2 chat pilot (analysis_id)
from src.db.postgres.init_db import init_db
from src.config.settings import settings
import uvicorn

# Configure logging
configure_logging()
logger = get_logger("main")


@asynccontextmanager
async def lifespan(app: FastAPI):
    logger.info("Starting application...")
    if not settings.skip_init_db:
        await init_db()
        logger.info("Database initialized")
    else:
        logger.info("Skipping database initialization (SKIP_INIT_DB=true)")
    yield


# Create FastAPI app
app = FastAPI(
    title="DataEyond Agentic Service",
    description="Multi-agent AI backend with RAG capabilities",
    version="0.1.0",
    lifespan=lifespan,
)

# Add middleware
add_cors_middleware(app)
app.state.limiter = limiter
app.add_exception_handler(RateLimitExceeded, _rate_limit_exceeded_handler)

# Include routers
# --- pr/5 Phase 1: AI-only surface. Non-AI routers unwired (Go owns them). ---
# app.include_router(users_router)         # unwired: login moved off Python
# app.include_router(document_router)      # unwired: Go handles documents
# app.include_router(room_router)          # unwired: replaced by analysis_id
# app.include_router(db_client_router)     # unwired: Go registers DB client
# app.include_router(data_catalog_router)  # unwired: Go handles the catalog
# app.include_router(chat_router)  # unwired: v2 chat replaces it (drops v1 cache ops routes)
app.include_router(report_router)
app.include_router(tools_router)
app.include_router(help_router)
app.include_router(traceability_router)  # KM-691: GET /api/v1/traceability
app.include_router(chat_v2_router)     # pr/5 Phase 2: POST /api/v2/chat/stream (analysis_id)


@app.get("/")
async def root():
    """Root endpoint."""
    return {
        "status": "ok",
        "service": "DataEyond Agentic Service",
        "version": "0.1.0"
    }


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


if __name__ == "__main__":
    uvicorn.run(
        "main:app",
        host="0.0.0.0",
        port=7860,
        reload=True
    )