from typing import Any, Dict, List

from django.db import DEFAULT_DB_ALIAS, connections
from django.test.utils import CaptureQueriesContext

from openslides.core.config import config
from openslides.core.models import Projector
from openslides.users.models import User
from openslides.utils.projector import AllData, get_config, register_projector_element


class TConfig:
    """
    Cachable, that fills the cache with the default values of the config variables.
    """

    def get_collection_string(self) -> str:
        return config.get_collection_string()

    def get_elements(self) -> List[Dict[str, Any]]:
        elements = []
        config.key_to_id = {}
        for id, item in enumerate(config.config_variables.values()):
            elements.append(
                {"id": id + 1, "key": item.name, "value": item.default_value}
            )
            config.key_to_id[item.name] = id + 1
        return elements

    async def restrict_elements(
        self, user_id: int, elements: List[Dict[str, Any]]
    ) -> List[Dict[str, Any]]:
        return elements


class TUser:
    """
    Cachable, that fills the cache with fake users.
    """

    def get_collection_string(self) -> str:
        return User.get_collection_string()

    def get_elements(self) -> List[Dict[str, Any]]:
        return [
            {
                "id": 1,
                "username": "admin",
                "title": "",
                "first_name": "",
                "last_name": "Administrator",
                "structure_level": "",
                "number": "",
                "about_me": "",
                "groups_id": [4],
                "is_present": False,
                "is_committee": False,
                "email": "",
                "last_email_send": None,
                "comment": "",
                "is_active": True,
                "default_password": "admin",
                "session_auth_hash": "362d4f2de1463293cb3aaba7727c967c35de43ee",
            }
        ]

    async def restrict_elements(
        self, user_id: int, elements: List[Dict[str, Any]]
    ) -> List[Dict[str, Any]]:
        return elements


class TProjector:
    """
    Cachable, that mocks the projector.
    """

    def get_collection_string(self) -> str:
        return Projector.get_collection_string()

    def get_elements(self) -> List[Dict[str, Any]]:
        return [
            {"id": 1, "elements": [{"name": "test/slide1", "id": 1}]},
            {"id": 2, "elements": [{"name": "test/slide2", "id": 1}]},
        ]

    async def restrict_elements(
        self, user_id: int, elements: List[Dict[str, Any]]
    ) -> List[Dict[str, Any]]:
        return elements


def slide1(element: Dict[str, Any], all_data: AllData) -> Dict[str, Any]:
    """
    Slide that shows the general_event_name.
    """
    return {"name": "slide1", "event_name": get_config(all_data, "general_event_name")}


def slide2(element: Dict[str, Any], all_data: AllData) -> Dict[str, Any]:
    return {"name": "slide2"}


register_projector_element("test/slide1", slide1)
register_projector_element("test/slide2", slide2)


def count_queries(func, *args, **kwargs) -> int:
    context = CaptureQueriesContext(connections[DEFAULT_DB_ALIAS])
    with context:
        func(*args, **kwargs)

    queries = "\n".join(
        f"{i}. {query['sql']}"
        for i, query in enumerate(context.captured_queries, start=1)
    )

    print(f"{len(context)} queries executed\nCaptured queries were:\n{queries}")
    return len(context)


def all_data_config() -> AllData:
    return {
        TConfig().get_collection_string(): {
            element["id"]: element for element in TConfig().get_elements()
        }
    }


def all_data_users() -> AllData:
    return {
        TUser().get_collection_string(): {
            element["id"]: element for element in TUser().get_elements()
        }
    }