import sys
import os
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))

# Dynamically import settings based on MODE environment variable
mode = os.environ.get('MODE', 'DEVELOPMENT').upper()
if mode == 'PRODUCTION':
    from settings_prod import settings
else:
    from settings_dev import settings

import requests
from fastapi import FastAPI, HTTPException, status
from fastapi.middleware.cors import CORSMiddleware
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.responses import JSONResponse
from .voipms_client import update_did_routing, get_forwardings
from .database import Session
from .models import Call

# class AuthMiddleware(BaseHTTPMiddleware):
#     async def dispatch(self, request, call_next):
#         auth_header = request.headers.get('authorization')
#         expected_token = f"Bearer {settings.voipms_api_token}"
#         if auth_header != expected_token:
#             return JSONResponse(status_code=401, content={"detail": "Unauthorized"})
#         response = await call_next(request)
#         return response

app = FastAPI(
    title="EAMCO VoIP.ms Controller",
    description="An API to manage routing for a VoIP.ms DID.",
    version="1.0.0",
)

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

@app.get("/", tags=["General"])
def read_root():
    """A simple root endpoint to confirm the API is running."""
    return {"message": f"Welcome to the VoIP.ms API for DID: {settings.target_did}"}

# app.add_middleware(AuthMiddleware)
@app.get("/test/forwardings")
def test_get_forwardings():
    try:
        result = get_forwardings(phone_number=settings.target_cellphone_1)
        return {
            "message": f"Forwarding entry for {settings.target_cellphone_1}",
            "voipms_response": result
        }
    except HTTPException as e:
        raise e
    
    
@app.get("/test/did")
def test_did_info():
    params = {
        "api_username": settings.voipms_api_username,
        "api_password": settings.voipms_api_password,
        "method": "getDIDsInfo",  # Correct: plural "DIDs"
        "did": settings.target_did,  # Filters to one DID
    }
    try:
        response = requests.get(settings.voipms_api_url, params=params)
        print(f"Test Request URL: {response.request.url}")
        print(f"Test Response: {response.json()}")
        return response.json()
    except requests.exceptions.RequestException as e:
        return {"error": f"Failed to connect to VoIP.ms API: {str(e)}", "params": params}
    except Exception as e:
        return {"error": f"Unexpected error: {str(e)}", "params": params}
    

@app.post("/route/sip", status_code=status.HTTP_200_OK, tags=["DID Routing"])
def route_to_sip_account():
    """
    Routes the target DID to the pre-configured SIP account.
    """
    try:
        # Use sub-account ID from TARGET_SIP_ACCOUNT
        sip_account_id = settings.target_sip_account.split('@')[0]  # Extract '407323_auburnoil'
        routing_string = f"account:{sip_account_id}"  # e.g., 'account:407323_auburnoil'
        result = update_did_routing(did=settings.target_did, routing=routing_string)
        target_phone = sip_account_id
        db = Session()
        db.add(Call(current_phone=target_phone))
        db.commit()
        db.close()
        return {
            "message": f"Successfully routed DID {settings.target_did} to SIP account {settings.target_sip_account}",
            "voipms_response": result
        }
    except HTTPException as e:
        raise e


@app.post("/route/cellphone1", status_code=status.HTTP_200_OK, tags=["DID Routing"])
def route_to_cellphone_1():
    """
    Routes the target DID to the pre-configured Cellphone #1.
    """
    try:
        # Get the forwarding entry for the phone number
        forwarding = get_forwardings(phone_number=settings.target_cellphone_1)
        forwarding_id = forwarding.get("forwarding")  # e.g., '998692'
        if not forwarding_id:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"No forwarding ID found for phone number {settings.target_cellphone_1}"
            )
        routing_string = f"fwd:{forwarding_id}"  # e.g., 'fwd:998692'
        result = update_did_routing(did=settings.target_did, routing=routing_string)
        target_phone = settings.target_cellphone_1
        db = Session()
        db.add(Call(current_phone=target_phone))
        db.commit()
        db.close()
        return {
            "message": f"Successfully routed DID {settings.target_did} to Cellphone #1 ({settings.target_cellphone_1})",
            "voipms_response": result
        }
    except HTTPException as e:
        raise e

@app.post("/route/cellphone2", status_code=status.HTTP_200_OK, tags=["DID Routing"])
def route_to_cellphone_2():
    """
    Routes the target DID to the pre-configured Cellphone #2.
    """
    try:
        # Get the forwarding entry for the phone number
        forwarding = get_forwardings(phone_number=settings.target_cellphone_2)
        forwarding_id = forwarding.get("forwarding")  # e.g., ID for 9143306100
        if not forwarding_id:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"No forwarding ID found for phone number {settings.target_cellphone_2}"
            )
        routing_string = f"fwd:{forwarding_id}"  # e.g., 'fwd:<ID>'
        result = update_did_routing(did=settings.target_did, routing=routing_string)
        target_phone = settings.target_cellphone_2
        db = Session()
        db.add(Call(current_phone=target_phone))
        db.commit()
        db.close()
        return {
            "message": f"Successfully routed DID {settings.target_did} to Cellphone #2 ({settings.target_cellphone_2})",
            "voipms_response": result
        }
    except HTTPException as e:
        raise e