from typing import List
from uuid import UUID

from auth.auth_bearer import AuthBearer, get_current_user
from fastapi import APIRouter, Depends, HTTPException
from models.brains import Brain
from models.brains_subscription_invitations import BrainSubscription
from models.users import User
from repository.user.get_user_email_by_user_id import get_user_email_by_user_id

from routes.authorizations.brain_authorization import (
    has_brain_authorization,
)

subscription_router = APIRouter()


@subscription_router.post("/brain/{brain_id}/subscription")
async def invite_user_to_brain(
    brain_id: UUID, users: List[dict], current_user: User = Depends(get_current_user)
):
    # TODO: Ensure the current user has permissions to invite users to this brain

    for user in users:
        subscription = BrainSubscription(
            brain_id=brain_id,
            email=user["email"],
            rights=user["rights"],
            inviter_email=current_user.email or "Quivr",
        )

        try:
            subscription.create_or_update_subscription_invitation()
            subscription.resend_invitation_email()
        except Exception as e:
            raise HTTPException(status_code=400, detail=f"Error inviting user: {e}")

    return {"message": "Invitations sent successfully"}


@subscription_router.get(
    "/brain/{brain_id}/users",
    dependencies=[Depends(AuthBearer()), Depends(has_brain_authorization())],
)
def get_brain_users(
    brain_id: UUID,
):
    """
    Get all users for a brain
    """
    brain = Brain(
        id=brain_id,
    )
    brain_users = brain.get_brain_users()

    brain_access_list = []

    for brain_user in brain_users:
        brain_access = {}
        # TODO: find a way to fetch user email concurrently
        brain_access["email"] = get_user_email_by_user_id(brain_user["user_id"])
        brain_access["rights"] = brain_user["rights"]
        brain_access_list.append(brain_access)

    return brain_access_list


@subscription_router.delete(
    "/brain/{brain_id}/subscription",
)
async def remove_user_subscription(
    brain_id: UUID, current_user: User = Depends(get_current_user)
):
    """
    Remove a user's subscription to a brain
    """
    brain = Brain(
        id=brain_id,
    )
    user_brain = brain.get_brain_for_user(current_user.id)
    if user_brain is None:
        raise HTTPException(
            status_code=403,
            detail="You don't have permission for this brain",
        )

    if user_brain.get("rights") != "Owner":
        brain.delete_user_from_brain(current_user.id)
    else:
        brain_users = brain.get_brain_users()
        brain_other_owners = [
            brain
            for brain in brain_users
            if brain["rights"] == "Owner"
            and str(brain["user_id"]) != str(current_user.id)
        ]

        if len(brain_other_owners) == 0:
            brain.delete_brain(current_user.id)
        else:
            brain.delete_user_from_brain(current_user.id)

    return {"message": f"Subscription removed successfully from brain {brain_id}"}