"""
Validation function handlers
"""

from typing import Dict, Any, Optional
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("Validation 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) -> Optional[Dict[str, Any]]:
        """
        Retrieve page by event function code
        Check reachable codes for user to render which page and components on Frontend
        Uses:
            Context Token Retriever to get user information from ACCESS_TOKEN
            CategoryCluster Retrieve Cluster Retrieve cluster by name
            Check available instructions of page and info user with it
        Returns:
            NAME=cluster_name.name,
            PREFIX=cluster_name.PREFIX,
            URL=dict(page_info).get("URL", None),
            ICON=dict(page_info).get("ICON", None),
            INFO=dict(page_info).get("INFO", None),
            SUB_COMPONENTS=sub_components,
        """
        from Events.Engine import CategoryCluster
        from Events.JustEvents.events_file import retrieve_cluster_by_name

        reachable_codes = []
        page_name = getattr(data, "page", None)
        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=page_name)
        if not cluster_from_all_events:
            raise ValueError(f"Cluster not found : {page_name}")

        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(page_name, None)
        if not page_info:
            raise ValueError("Page not found")

        sub_components: dict = dict(page_info).get("SUB_COMPONENTS", {})
        if not sub_components:
            raise ValueError("Sub components 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),
            INFO=dict(page_info).get("INFO", None),
            SUB_COMPONENTS=sub_components,
            # MAPPING=cluster_name.MAPPING,
        )
        for key, events in dict(sub_components).items():
            # Meaning client can reach this endpoint [] & [] intersection
            endpoint_event_codes = dict(events).get("ENDPOINTS", [])
            new_page_info_dict["SUB_COMPONENTS"][key].pop("ENDPOINTS")
            if not set(endpoint_event_codes) & set(reachable_codes):
                new_page_info_dict["SUB_COMPONENTS"].pop(key)
            
        return new_page_info_dict