from typing import Dict, Set, Tuple

from BaseClasses import MultiWorld, Item, CollectionState


class AutoWorldRegister(type):
    world_types = {}

    def __new__(cls, name, bases, dct):
        new_class = super().__new__(cls, name, bases, dct)
        if "game" in dct:
            AutoWorldRegister.world_types[dct["game"]] = new_class
        return new_class


def call_single(world: MultiWorld, method_name: str, player: int):
    method = getattr(world.worlds[player], method_name)
    return method()


def call_all(world: MultiWorld, method_name: str):
    for player in world.player_ids:
        call_single(world, method_name, player)


class World(metaclass=AutoWorldRegister):
    """A World object encompasses a game's Items, Locations, Rules and additional data or functionality required.
    A Game should have its own subclass of World in which it defines the required data structures."""

    world: MultiWorld
    player: int
    options: dict = {}
    topology_present: bool = False  # indicate if world type has any meaningful layout/pathing
    item_names: Set[str] = frozenset()
    # maps item group names to sets of items. Example: "Weapons" -> {"Sword", "Bow"}
    item_name_groups: Dict[str, Set[str]] = {}

    def __init__(self, world: MultiWorld, player: int):
        self.world = world
        self.player = player

    # overwritable methods that get called by Main.py, sorted by execution order
    def create_regions(self):
        pass

    def set_rules(self):
        pass

    def generate_basic(self):
        pass

    def generate_output(self):
        """This method gets called from a threadpool, do not use world.random here.
        If you need any last-second randomization, use MultiWorld.slot_seeds[slot] instead."""
        pass

    def get_required_client_version(self) -> Tuple[int, int, int]:
        return 0, 0, 3

    # end of Main.py calls

    def collect(self, state: CollectionState, item: Item) -> bool:
        """Collect an item into state. For speed reasons items that aren't logically useful get skipped."""
        if item.advancement:
            state.prog_items[item.name, item.player] += 1
            return True  # indicate that a logical state change has occured
        return False

    def create_item(self, name: str) -> Item:
        """Create an item for this world type and player.
        Warning: this may be called with self.world = None, for example by MultiServer"""
        raise NotImplementedError