from twisted.web.http import Request
import yaml
import logging, coloredlogs
from logging.handlers import TimedRotatingFileHandler
import zlib
import json
import base64
from os import path
from typing import Tuple

from titles.diva.handlers.base import *
from core.config import CoreConfig
from titles.diva.config import DivaConfig
from titles.diva.const import DivaConstants
from titles.diva.base import DivaBase


class DivaServlet:
    def __init__(self, core_cfg: CoreConfig, cfg_dir: str) -> None:
        self.core_cfg = core_cfg
        self.game_cfg = DivaConfig()
        if path.exists(f"{cfg_dir}/{DivaConstants.CONFIG_NAME}"):
            self.game_cfg.update(
                yaml.safe_load(open(f"{cfg_dir}/{DivaConstants.CONFIG_NAME}"))
            )

        self.base = DivaBase(core_cfg, self.game_cfg)

        self.logger = logging.getLogger("diva")
        log_fmt_str = "[%(asctime)s] Diva | %(levelname)s | %(message)s"
        log_fmt = logging.Formatter(log_fmt_str)
        fileHandler = TimedRotatingFileHandler(
            "{0}/{1}.log".format(self.core_cfg.server.log_dir, "diva"),
            encoding="utf8",
            when="d",
            backupCount=10,
        )

        fileHandler.setFormatter(log_fmt)

        consoleHandler = logging.StreamHandler()
        consoleHandler.setFormatter(log_fmt)

        self.logger.addHandler(fileHandler)
        self.logger.addHandler(consoleHandler)

        self.logger.setLevel(self.game_cfg.server.loglevel)
        coloredlogs.install(
            level=self.game_cfg.server.loglevel, logger=self.logger, fmt=log_fmt_str
        )

    @classmethod
    def get_allnet_info(
        cls, game_code: str, core_cfg: CoreConfig, cfg_dir: str
    ) -> Tuple[bool, str, str]:
        game_cfg = DivaConfig()
        if path.exists(f"{cfg_dir}/{DivaConstants.CONFIG_NAME}"):
            game_cfg.update(
                yaml.safe_load(open(f"{cfg_dir}/{DivaConstants.CONFIG_NAME}"))
            )

        if not game_cfg.server.enable:
            return (False, "", "")

        if core_cfg.server.is_develop:
            return (
                True,
                f"http://{core_cfg.title.hostname}:{core_cfg.title.port}/{game_code}/$v/",
                "",
            )

        return (True, f"http://{core_cfg.title.hostname}/{game_code}/$v/", "")

    def render_POST(self, req: Request, version: int, url_path: str) -> bytes:
        req_raw = req.content.getvalue()
        url_header = req.getAllHeaders()
        req.responseHeaders.addRawHeader(b"content-type", b"text/plain")

        if "THIS_STRING_SEPARATES" in str(url_header):
            binary_request = req_raw.splitlines()
            binary_cmd_decoded = binary_request[3].decode("utf-8")

            req_cls = BaseBinaryRequest(binary_cmd_decoded)

        else:
            json_string = json.dumps(
                req_raw.decode("utf-8")
            )  # Take the response and decode as UTF-8 and dump
            b64string = json_string.replace(
                r"\n", "\n"
            )  # Remove all \n and separate them as new lines
            gz_string = base64.b64decode(b64string)  # Decompressing the base64 string

            try:
                url_data = zlib.decompress(gz_string)  # Decompressing the gzip
            except zlib.error as e:
                self.logger.error(f"Failed to defalte! {e} -> {gz_string}")
                return b"stat=0"

            try:
                req_cls = BaseRequest(url_data)
            except DivaRequestParseException as e:
                self.logger.error(e)
                return b"stat=0"

        self.logger.debug(f"Request: {url_data}\nHeaders: {url_header}")
        self.logger.info(
            f"{req_cls.cmd} request from {req_cls.kc_serial}/{req_cls.b_serial} at {req.getClientAddress().host}"
        )

        handler_str = f"handle_{req_cls.cmd}_request"

        if not hasattr(self.base, handler_str):
            self.logger.warn(f"Unhandled cmd {req_cls.cmd}")
            return BaseResponse(req_cls.cmd, req_cls.req_id).make().encode()

        handler = getattr(self.base, handler_str)

        response = handler(req_cls.raw)
        if response is None or response == "":
            response = BaseResponse(req_cls.cmd, req_cls.req_id).make()
        
        if not response.startswith("cmd="):
            response = f"cmd={req_cls.cmd}&req_id={req_cls.req_id}&stat=ok&" + response
        
        self.logger.debug(f"Response: {response}")
        return response.encode(errors="ignore")