#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from abc import ABC, abstractmethod
from typing import Any, Self, Optional, Sequence
from re import Match as REMath
import datetime
from Interfaces.Application.AnPInterface import AnPInterface
from Utils.Common import Common

class HTTPServersAbstract(ABC):

    DEFAULT_PORT:int = 8000
    DEFAULT_HOST:str = ""

    def __init__(self:Self, anp:AnPInterface, key:str, inputs:Optional[dict[str, Any|None]|Sequence[Any|None]] = None) -> None:
        self.anp:AnPInterface = anp
        self._inputs:dict[str, Any|None] = Common.get_dictionary(inputs)
        self.host:str = self.DEFAULT_HOST
        self.port:int = self.DEFAULT_PORT
        self._print_data:dict[str, Any|None] = {
            "port": self.port, 
            "host": self.host
        }
        self.http_messages:dict[int, str] = {int(code): message for code, message in anp.settings.get((
            "default_http_messages", "http_messages"
        ), inputs).items()}
        self.protocol:str = anp.settings.get(("http_protocol", "protocol"), inputs, "HTTP")
        self.protocol_version:str = anp.settings.get(("http_protocol_version", "protocol_version"), inputs, "1.1")
        self.accept_range:str = anp.settings.get(("http_accept_range", "accept_range"), inputs, "bytes")
        self.access_control_max_age:int = anp.settings.get(("http_access_control_max_age", "access_control_max_age"), inputs, 84600)
        self.keep_alive_maximum:int = anp.settings.get(("http_keep_alive_maximum", "keep_alive_maximum"), inputs, 100)
        self.keep_alive_timeout:int = anp.settings.get(("http_keep_alive_timeout", "keep_alive_timeout"), inputs, 5)
        self.cors:str = anp.settings.get(("http_cors", "cors"), inputs, "*")
        self.mime:str = anp.settings.get(("default_http_mime", "http_mime", "mime"), inputs, "text/html")
        self.charset:str = anp.settings.get(("default_http_charset", "http_charset", "charset"), inputs, "UTF-8")
        self._session_timeout:int = anp.settings.get(("sessions_timeout", "timeout"), inputs, 3600)
        self.key:str = key

        self.update()

    @staticmethod
    def format_datetime(datetime:datetime.datetime) -> str:
        return datetime.strftime("%a, %d %b %Y %H:%M:%S GMT")

    def get_http_message(self:Self, code:int) -> str:
        return self.http_messages.get(code, "Unknown Status Code")

    def __update_print_data(self:Self) -> None:
        self._print_data["port"] = self.port
        self._print_data["host"] = self.host

    @abstractmethod
    def start(self:Self) -> None:pass

    @abstractmethod
    def close(self:Self) -> None:pass

    def update(self:Self) -> None:

        self.close()

        self.port = self.anp.settings.get(("http_server_port", "http_port", "port"), self._inputs, self.DEFAULT_PORT)
        self.host = self.anp.settings.get(("http_server_host", "http_host", "host"), self._inputs, self.DEFAULT_HOST)
        self.__update_print_data()

        self.anp.settings.get(("http_server_autostart", "http_autostart", "autostart")) and self.start()

    def reset(self:Self) -> None:

        self.port = self.DEFAULT_PORT
        self.host = self.DEFAULT_HOST
        self.__update_print_data()

        self.update()

    def load_cookies(self:Self, cookies:str|None) -> dict[str, Any|None]:
        if not cookies:
            return {}
        
        cookie:str
        results:dict[str, Any|None] = {}

        for cookie in cookies.split(";"):
            if "=" in cookie:

                key:str
                value:str
                
                key, value = cookie.split("=", 1)
                results[key.strip()] = value.strip()

        return results

    @staticmethod
    def get_variables_from(source:str|None) -> dict[str, Any|None]:
        if not source:
            return {}

        json:dict[str, Any|None] = Common.data_decode(source)

        if json is not None:
            return Common.get_dictionary(json)
        
        json = {}

        def callback(matches:REMath) -> str:
            json[matches.group(1)] = matches.group(2)
            return matches.group(0)

        Common.replace(self.HTTP_VARIABLE, source, callback)
        
        return json