"""
Validation function handlers
"""

from typing import Dict, Any
from fastapi import Request

from ApiLayers.AllConfigs.Redis.configs import (
    RedisValidationKeysAction,
    RedisCategoryKeys,
)
from Services.Redis.Actions.actions import RedisActions
from Events.base_request_model import BaseRouteModel

from config import ValidationsConfig


class ValidateBase:

    redis_key: str = f"{RedisCategoryKeys.METHOD_FUNCTION_CODES}:*:"

    def __init__(self, url: str, reachable_codes: list):
        self.url = url
        self.reachable_codes = reachable_codes

    @property
    def function_codes(self):
        redis_function_codes = RedisActions.get_json(
            list_keys=[f"{self.redis_key}{self.url}"]
        )
        if redis_function_codes.status:
            return redis_function_codes.first
        raise ValueError("Function code not found")

    @property
    def intersection(self):
        intersection = list(
            set(self.function_codes).intersection(set(self.reachable_codes))
        )
        if not len(intersection) == 1:
            raise ValueError(
                "Users reachable function codes does not match or match more than one."
            )
        return intersection[0]


class RedisHeaderRetrieve(ValidateBase):

    redis_key: str = RedisValidationKeysAction.dynamic_header_request_key

    @property
    def header(self):
        """
        Headers: Headers which is merged with response model && language models of event
        """
        redis_header = RedisActions.get_json(
            list_keys=[f"{self.redis_key}:{self.intersection}"]
        )
        if redis_header.status:
            return redis_header.first
        raise ValueError("Header not found")


class RedisValidationRetrieve(ValidateBase):

    redis_key: str = RedisValidationKeysAction.dynamic_validation_key

    @property
    def validation(self):
        """
        Validation: Validation of event which is merged with response model && language models of event
        """
        redis_validation = RedisActions.get_json(
            list_keys=[f"{self.redis_key}:{self.intersection}"]
        )
        if redis_validation.status:
            return redis_validation.first
        raise ValueError("Header not found")


class ValidationsBoth(RedisHeaderRetrieve, RedisValidationRetrieve):

    @property
    def both(self) -> Dict[str, Any]:
        """
        Headers: Headers which is merged with response model && language models of event
        Validation: Validation of event which is merged with response model && language models of event
        """
        return {"headers": self.header, "validation": self.validation}


class RetrieveValidation(BaseRouteModel):

    @classmethod
    def retrieve_validation(cls, data: Any):
        """
        Retrieve validation by event function code
        """
        if (
            getattr(data, "asked_field", "")
            not in ValidationsConfig.SUPPORTED_VALIDATIONS
        ):
            raise ValueError(
                f"Invalid asked field please retry with valid fields {ValidationsConfig.SUPPORTED_VALIDATIONS}"
            )

        reachable_codes = []
        if cls.context_retriever.token.is_employee:
            reachable_codes = (
                cls.context_retriever.token.selected_company.reachable_event_codes
            )
        elif cls.context_retriever.token.is_occupant:
            reachable_codes = (
                cls.context_retriever.token.selected_occupant.reachable_event_codes
            )

        validate_dict = dict(url=data.url, reachable_code=reachable_codes)
        if data.asked_field == "all":
            return ValidationsBoth(**validate_dict).both
        elif data.asked_field == "headers":
            return RedisHeaderRetrieve(**validate_dict).header
        elif data.asked_field == "validation":
            return RedisValidationRetrieve(**validate_dict).validation


class RetrievePage(BaseRouteModel):

    @staticmethod
    def get_site_cluster(page_name: str):
        """
        /dashboard?site=clusterName retrieves clusterName
        """
        if page_name:
            return page_name.split("?")[1].split("=")[1]
        raise ValueError("Page name not found")

    @classmethod
    def retrieve_cluster(cls, data: Any):
        """
        Retrieve cluster by event function code
        """
        reachable_codes = []
        if cls.context_retriever.token.is_employee:
            reachable_codes = (
                cls.context_retriever.token.selected_company.reachable_event_codes
            )
        elif cls.context_retriever.token.is_occupant:
            reachable_codes = (
                cls.context_retriever.token.selected_occupant.reachable_event_codes
            )
        validate_dict = dict(url=data.url, reachable_code=reachable_codes)
        print("validate_dict", validate_dict)
        cluster_name = data.get("name")
        print("cluster_name", cluster_name)
        raise NotImplementedError("Cluster not found")

    @classmethod
    def retrieve_page(cls, data: Any):
        """
        Retrieve page by event function code
        """
        from Events.Engine import CategoryCluster
        from Events.JustEvents.events_file import retrieve_cluster_by_name

        reachable_codes = []
        if cls.context_retriever.token.is_employee:
            reachable_codes = (
                cls.context_retriever.token.selected_company.reachable_event_codes
            )
        elif cls.context_retriever.token.is_occupant:
            reachable_codes = (
                cls.context_retriever.token.selected_occupant.reachable_event_codes
            )
        cluster_from_all_events = cls.get_site_cluster(page_name=data.page)
        if not cluster_from_all_events:
            raise ValueError(f"Cluster not found : {data.page}")

        cluster_name: CategoryCluster = retrieve_cluster_by_name(cluster_from_all_events)
        if not cluster_name:
            raise ValueError("Cluster not found")

        page_info = cluster_name.retrieve_page_info().get(data.page, None)
        if not page_info:
            raise ValueError("Page not found")

        endpoints: dict = dict(page_info).get("endpoints", {})
        if not endpoints:
            raise ValueError("Endpoints not found")

        new_page_info_dict = dict(
            name=cluster_name.name,
            prefix=cluster_name.PREFIX,
            url=dict(page_info).get("url", None),
            icon=dict(page_info).get("icon", None),
            page_info=dict(page_info).get("page_info", None),
            endpoints={},
            language_models={},
            instructions={},
        )
        for key, event_codes in dict(endpoints).items():
            # Meaning client can reach this endpoint [] & [] intersection
            if set(event_codes) & set(reachable_codes):
                language_models = dict(page_info).get("language_models", {})
                instructions = dict(page_info).get("instructions", {})
                new_page_info_dict["endpoints"][key] = True
                if language_models.get(key, None):
                    if key in language_models[key].keys():   # key has sub key blocks inside lang model
                        for key_model, val_model in dict(language_models[key]).items():
                            if key_model in new_page_info_dict["endpoints"].keys():
                                new_page_info_dict["language_models"][key_model] = language_models[key][key_model]
                    else:
                        new_page_info_dict["language_models"][key] = language_models[key]
                if instructions.get(key, None):
                    new_page_info_dict["instructions"][key] = instructions.get(key, None)
        return new_page_info_dict