import os
import pkgutil
from io import BytesIO
from typing import Dict, List, Set

import pickle

from .datatypes import Door, Painting, Panel, Progression, Room

ALL_ROOMS: List[Room] = []
DOORS_BY_ROOM: Dict[str, Dict[str, Door]] = {}
PANELS_BY_ROOM: Dict[str, Dict[str, Panel]] = {}
PAINTINGS: Dict[str, Painting] = {}

PROGRESSIVE_ITEMS: List[str] = []
PROGRESSION_BY_ROOM: Dict[str, Dict[str, Progression]] = {}

PAINTING_ENTRANCES: int = 0
PAINTING_EXIT_ROOMS: Set[str] = set()
PAINTING_EXITS: int = 0
REQUIRED_PAINTING_ROOMS: List[str] = []
REQUIRED_PAINTING_WHEN_NO_DOORS_ROOMS: List[str] = []

SPECIAL_ITEM_IDS: Dict[str, int] = {}
PANEL_LOCATION_IDS: Dict[str, Dict[str, int]] = {}
DOOR_LOCATION_IDS: Dict[str, Dict[str, int]] = {}
DOOR_ITEM_IDS: Dict[str, Dict[str, int]] = {}
DOOR_GROUP_ITEM_IDS: Dict[str, int] = {}
PROGRESSIVE_ITEM_IDS: Dict[str, int] = {}

HASHES: Dict[str, str] = {}


def get_special_item_id(name: str):
    if name not in SPECIAL_ITEM_IDS:
        raise Exception(f"Item ID for special item {name} not found in ids.yaml.")

    return SPECIAL_ITEM_IDS[name]


def get_panel_location_id(room: str, name: str):
    if room not in PANEL_LOCATION_IDS or name not in PANEL_LOCATION_IDS[room]:
        raise Exception(f"Location ID for panel {room} - {name} not found in ids.yaml.")

    return PANEL_LOCATION_IDS[room][name]


def get_door_location_id(room: str, name: str):
    if room not in DOOR_LOCATION_IDS or name not in DOOR_LOCATION_IDS[room]:
        raise Exception(f"Location ID for door {room} - {name} not found in ids.yaml.")

    return DOOR_LOCATION_IDS[room][name]


def get_door_item_id(room: str, name: str):
    if room not in DOOR_ITEM_IDS or name not in DOOR_ITEM_IDS[room]:
        raise Exception(f"Item ID for door {room} - {name} not found in ids.yaml.")

    return DOOR_ITEM_IDS[room][name]


def get_door_group_item_id(name: str):
    if name not in DOOR_GROUP_ITEM_IDS:
        raise Exception(f"Item ID for door group {name} not found in ids.yaml.")

    return DOOR_GROUP_ITEM_IDS[name]


def get_progressive_item_id(name: str):
    if name not in PROGRESSIVE_ITEM_IDS:
        raise Exception(f"Item ID for progressive item {name} not found in ids.yaml.")

    return PROGRESSIVE_ITEM_IDS[name]


def load_static_data_from_file():
    global PAINTING_ENTRANCES, PAINTING_EXITS

    class RenameUnpickler(pickle.Unpickler):
        def find_class(self, module, name):
            renamed_module = module
            if module == "datatypes":
                renamed_module = "worlds.lingo.datatypes"

            return super(RenameUnpickler, self).find_class(renamed_module, name)

    file = pkgutil.get_data(__name__, os.path.join("data", "generated.dat"))
    pickdata = RenameUnpickler(BytesIO(file)).load()
        
    HASHES.update(pickdata["HASHES"])
    PAINTINGS.update(pickdata["PAINTINGS"])
    ALL_ROOMS.extend(pickdata["ALL_ROOMS"])
    DOORS_BY_ROOM.update(pickdata["DOORS_BY_ROOM"])
    PANELS_BY_ROOM.update(pickdata["PANELS_BY_ROOM"])
    PROGRESSIVE_ITEMS.extend(pickdata["PROGRESSIVE_ITEMS"])
    PROGRESSION_BY_ROOM.update(pickdata["PROGRESSION_BY_ROOM"])
    PAINTING_ENTRANCES = pickdata["PAINTING_ENTRANCES"]
    PAINTING_EXIT_ROOMS.update(pickdata["PAINTING_EXIT_ROOMS"])
    PAINTING_EXITS = pickdata["PAINTING_EXITS"]
    REQUIRED_PAINTING_ROOMS.extend(pickdata["REQUIRED_PAINTING_ROOMS"])
    REQUIRED_PAINTING_WHEN_NO_DOORS_ROOMS.extend(pickdata["REQUIRED_PAINTING_WHEN_NO_DOORS_ROOMS"])
    SPECIAL_ITEM_IDS.update(pickdata["SPECIAL_ITEM_IDS"])
    PANEL_LOCATION_IDS.update(pickdata["PANEL_LOCATION_IDS"])
    DOOR_LOCATION_IDS.update(pickdata["DOOR_LOCATION_IDS"])
    DOOR_ITEM_IDS.update(pickdata["DOOR_ITEM_IDS"])
    DOOR_GROUP_ITEM_IDS.update(pickdata["DOOR_GROUP_ITEM_IDS"])
    PROGRESSIVE_ITEM_IDS.update(pickdata["PROGRESSIVE_ITEM_IDS"])


# Initialize the static data at module scope.
load_static_data_from_file()