from typing import Tuple, Optional, List, Dict, Any
import requests
from amocrm.v2 import exceptions
from amocrm.v2.filters import Filter

_session = requests.Session()


class AsyncBaseInteraction:
    _default_headers = {
        "User-Agent": "amocrm-py/v2",
    }

    def __init__(self, token_manager, session=_session, headers=_default_headers):
        self._token_manager = token_manager
        self._session = session
        self._default_headers = headers

    async def get_headers(self):
        headers = {}
        headers.update(self._default_headers)
        headers.update(await self._get_auth_headers())
        return headers

    async def _get_auth_headers(self):
        return {"Authorization": "Bearer " + await self._token_manager.get_access_token()}

    async def _get_url(self, path):
        """Получает URL и обеспечивает правильное получение поддомена."""
        # Получаем поддомен из MongoDB если он не был указан при инициализации
        if not self._token_manager.subdomain:
            subdomain = await self._get_subdomain_from_db()
            if not subdomain:
                raise exceptions.AmoApiException("Не удалось получить поддомен из MongoDB. Убедитесь, что subdomain сохранен в базе.")
            return f"https://{subdomain}.amocrm.ru/api/v4/{path}"
        return f"https://{self._token_manager.subdomain}.amocrm.ru/api/v4/{path}"
        
    async def _get_subdomain_from_db(self) -> str:
        """Получает поддомен из MongoDB для текущего client_id."""
        try:
            # Здесь мы предполагаем, что в вашей таблице tokens в MongoDB 
            # есть поле subdomain для каждого client_id
            token_data = await self._token_manager._storage.collection.find_one(
                {"client_id": self._token_manager._client_id}
            )
            
            if token_data and "subdomain" in token_data:
                print(f"✅ Получен поддомен из MongoDB: {token_data['subdomain']}")
                return token_data["subdomain"]
            
            print(f"❌ Поддомен не найден в MongoDB для client_id: {self._token_manager._client_id}")
            return None
        except Exception as e:
            print(f"❌ Ошибка при получении поддомена из MongoDB: {str(e)}")
            return None

    async def _request(self, method, path, data=None, params=None, headers=None):
        headers = headers or {}
        headers.update(await self.get_headers())
        url = await self._get_url(path)
        
        try:
            response = self._session.request(method, url=url, json=data, params=params, headers=headers)
        except requests.exceptions.ConnectionError as e:
            raise exceptions.AmoApiException(e.args[0].args[0])  # Sometimes Connection aborted.
        
        if response.status_code == 204:
            return None, 204
        if response.status_code < 300 or response.status_code == 400:
            return response.json(), response.status_code
        if response.status_code == 401:
            raise exceptions.UnAuthorizedException()
        if response.status_code == 403:
            raise exceptions.PermissionsDenyException()
        if response.status_code == 402:
            raise ValueError("Тариф не позволяет включать покупателей")
        raise exceptions.AmoApiException(f"Wrong status {response.status_code} ({response.text})")

    async def request(self, method, path, data=None, params=None, headers=None, include=None):
        params = params or {}
        if include:
            params["with"] = ",".join(include)
        return await self._request(method, path, data=data, params=params, headers=headers)

    async def _list(self, path, page, include=None, limit=250, query=None, filters: Tuple[Filter] = (), order=None):
        assert order is None or len(order) == 1
        assert limit <= 250
        params = {
            "page": page,
            "limit": limit,
            "query": query,
        }
        if order:
            field, value = list(order.items())[0]
            params["order[{}]".format(field)] = value
        for _filter in filters:
            params.update(_filter._as_params())
        return await self.request("get", path, params=params, include=include)

    async def _all(self, path, include=None, query=None, filters: Tuple[Filter] = (), order=None, limit=250):
        page = 1
        while True:
            response, _ = await self._list(
                path, page, include=include, query=query, filters=filters, order=order, limit=limit
            )
            if response is None:
                return
            yield response["_embedded"]
            if "next" not in response.get("_links", []):
                return
            page += 1


class AsyncGenericInteraction(AsyncBaseInteraction):
    path = ""
    field = None

    def __init__(self, *args, path=None, field=None, **kwargs):
        super().__init__(*args, **kwargs)
        if path is not None:
            self.path = path
        if field is not None:
            self.field = field

    def _get_field(self):
        return self.field or self.path

    def _get_path(self):
        return self.path

    async def get_list(self, page, include=None, limit=250, query=None, filters=None, order=None):
        response, _ = await self._list(
            self._get_path(), page, include=include, limit=limit, query=query, filters=filters, order=order
        )
        return response["_embedded"][self._get_field()]

    async def get_all(self, include=None, query=None, filters=(), order=None):
        async for data in self._all(self._get_path(), include=include, query=query, filters=filters, order=order):
            for item in data[self._get_field()]:
                yield item

    async def get(self, object_id, include=None):
        path = "{}/{}".format(self._get_path(), object_id)
        response, status = await self.request("get", path, include=include)
        if status == 204:
            raise exceptions.NotFound()
        return response

    async def create(self, data):
        response, status = await self.request("post", self._get_path(), data=[data])
        if status == 400:
            raise exceptions.ValidationError(response)
        return response["_embedded"][self._get_field()][0]

    async def update(self, object_id, data):
        path = "{}/{}".format(self._get_path(), object_id)
        response, status = await self.request("patch", path, data=data)
        if status == 400:
            raise exceptions.ValidationError(response)
        return response


# Пример реализации для сделок
class AsyncLeadsInteraction(AsyncGenericInteraction):
    path = "leads"

# Другие сущности могут следовать тому же шаблону
class AsyncContactsInteraction(AsyncGenericInteraction):
    path = "contacts"

class AsyncCompaniesInteraction(AsyncGenericInteraction):
    path = "companies"

class AsyncTasksInteraction(AsyncGenericInteraction):
    path = "tasks"