from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
import os
import sys
from pathlib import Path

# ------------------------------------------------------------
# Fix Python paths so imports like backend.api.routes.agent work
# ------------------------------------------------------------
root_dir = Path(__file__).resolve().parents[2]
sys.path.insert(0, str(root_dir))

# ------------------------------------------------------------
# Import ALL routers correctly
# ------------------------------------------------------------
from backend.api.routes.agent import router as agent_router
from backend.api.routes.admin import router as admin_router
from backend.api.routes.rag import router as rag_router
from backend.api.routes.web import router as web_router
from backend.api.routes.analytics import router as analytics_router

# ------------------------------------------------------------
# Main FastAPI app
# ------------------------------------------------------------
app = FastAPI(title="IntegraChat API", version="1.0.0")

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# ------------------------------------------------------------
# Route Registration (THIS FIXES YOUR 404)
# ------------------------------------------------------------
app.include_router(agent_router, prefix="/agent", tags=["Agent"])
app.include_router(admin_router, prefix="/admin", tags=["Admin"])
app.include_router(rag_router, prefix="/rag", tags=["RAG"])
app.include_router(web_router, prefix="/web", tags=["Web"])
app.include_router(analytics_router, prefix="/analytics", tags=["Analytics"])

# ------------------------------------------------------------
# Health Check
# ------------------------------------------------------------
@app.get("/health")
def health():
    return {"status": "ok", "version": "1.0.0"}

# ------------------------------------------------------------
# Local Run
# ------------------------------------------------------------
if __name__ == "__main__":
    import uvicorn
    port = int(os.getenv("API_PORT", "8000"))
    uvicorn.run("backend.api.main:app", host="0.0.0.0", port=port, reload=True)