#! /bin/python3 import json import sys import more_itertools from enum import Enum from termcolor import colored from typing import List, Optional from variants import variant_id, variant_name from hanabi import DeckCard, ActionType, Action, GameState, HanabiInstance # use same BASE62 as on hanab.live to encode decks BASE62 = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"; # Helper method, iterate over chunks of length n in a string def chunks(s: str, n: int): for i in range(0, len(s), n): yield s[i:i+n] # exception thrown by decompression methods if parsing fails class InvalidFormatError(ValueError): pass def compress_actions(actions: List[Action], game_id=None) -> str: minType = 0 maxType = 0 if len(actions) != 0: minType = min(map(lambda a: a.type.value, actions)) maxType = max(map(lambda a: a.type.value, actions)) typeRange = maxType - minType + 1 def compress_action(action): ## We encode action values with +1 to differentiate # null (encoded 0) and 0 (encoded 1) value = 0 if action.value is None else action.value + 1 if action.type == ActionType.VoteTerminate: # This is currently a hack, the actual format has a 10 here # but we cannot encode this value = 0 try: a = BASE62[typeRange * value + (action.type.value - minType)] b = BASE62[action.target] except IndexError as e: raise ValueError("Encoding action failed, value too large, found {}".format(value)) from e return a + b return "{}{}{}".format( minType, maxType, ''.join(map(compress_action, actions)) ) def decompress_actions(actions_str: str) -> List[Action]: if not len(actions_str >= 2): raise InvalidFormatError("min/max range not specified, found: {}".format(actions_str)) try: minType = int(actions_str[0]) maxType = int(actions_str[1]) except ValueError as e: raise InvalidFormatError( "min/max range of actions not specified, expected two integers, found {}".format(actions_str[:2]) ) from e if not minType <= maxType: raise InvalidFormatError("min/max range illegal, found [{},{}]".format(minType, maxType)) typeRange = maxType - minType + 1 if not len(actions_str) % 2 == 0: raise InvalidFormatError("Invalid action string length: Expected even number of characters") for (index, char) in enumerate(actions_str[2:]): if not char in BASE62: raise InvalidFormatError( "Invalid character at index {}: Found {}, expected one of {}".format( index, char, BASE62 ) ) def decompress_action(index, action): try: action_type_value = (BASE62.index(action[0]) % typeRange) + minType action_type = ActionType(action_type_value) except ValueError as e: raise InvalidFormatError( "Invalid action type at action {}: Found {}, expected one of {}".format( index, actionTypeValue, [action_type.value for action_type in ActionType] ) ) from e ## We encode values with +1 to differentiate null (encoded 0) and 0 (encoded 1) value = BASE62.index(action[0]) // typeRange - 1 if value == -1: value = None if action_type in [ActionType.Play, ActionType.Discard]: if value is not None: raise InvalidFormatError( "Invalid action value: Action at action index {} is Play/Discard, expected value None, found: {}".format(value) ) target = BASE62.index(action[1]) return Action(action_type, target, value) return [decompress_action(idx, a) for (idx, a) in enumerate(chunks(actions_str[2:], 2))] def compress_deck(deck: List[DeckCard]) -> str: assert(len(deck) != 0) minRank = min(map(lambda c: c.rank, deck)) maxRank = max(map(lambda c: c.rank, deck)) rankRange = maxRank - minRank + 1 def compress_card(card): try: return BASE62[rankRange * card.suitIndex + (card.rank - minRank)] except IndexError as e: raise InvalidFormatError( "Could not compress card, suit or rank too large. Found: {}".format(card) ) from e return "{}{}{}".format( minRank, maxRank, ''.join(map(compress_card, deck)) ) def decompress_deck(deck_str: str) -> List[DeckCard]: if len(deck_str) < 2: raise InvalidFormatError("min/max rank range not specified, found: {}".format(deck_str)) try: minRank = int(deck_str[0]) maxRank = int(deck_str[1]) except ValueError as e: raise InvalidFormatError( "min/max rank range not specified, expected two integers, found {}".format(actions_str[:2]) ) from e if not maxRank >= minRank: raise InvalidFormatError( "Invalid rank range, found [{},{}]".format(minRank, maxRank) ) rankRange = maxRank - minRank + 1 for (index, char) in enumerate(deck_str[2:]): if not char in BASE62: raise InvalidFormatError( "Invalid character at index {}: Found {}, expected one of {}".format( index, char, BASE62 ) ) def decompress_card(card_char): index = BASE62.index(card_char) suitIndex = index // rankRange rank = index % rankRange + minRank return DeckCard(suitIndex, rank) return [decompress_card(c) for c in deck_str[2:]] # compresses a standard GameState object into hanab.live format # which can be used in json replay links # The GameState object has to be standard / fitting hanab.live variants, # otherwise compression is not possible def compress_game_state(state: GameState) -> str: if not state.instance.is_standard(): raise ValueError("Cannot compress non-standard hanabi instance") out = "{}{},{},{}".format( state.instance.num_players, compress_deck(state.instance.deck), compress_actions(state.actions), state.instance.variant_id # Note that a sane default is chosen if construction did not provide one ) with_dashes = ''.join(more_itertools.intersperse("-", out, 20)) return with_dashes def decompress_game_state(game_str: str) -> GameState: game_str = game_str.replace("-", "") parts = game_str.split(",") if not len(parts) == 3: raise InvalidFormatError( "Expected 3 comma-separated parts of game, found {}".format( len(parts) ) ) [players_deck, actions, variant_id] = parts if len(players_deck) == 0: raise InvalidFormatError("Expected nonempty first part") try: num_players = int(players_deck[0]) except ValueError as e: raise InvalidFormatError( "Expected number of players, found: {}".format(players_deck[0]) ) from e try: deck = decompress_deck(players_deck[1:]) except InvalidFormatError as e: raise InvalidFormatError("Error while parsing deck") from e try: actions = decompress_actions(actions) except InvalidFormatError as e: raise InvalidFormatError("Error while parsing actions") from e try: variant_id = int(variant_id) except ValueError: raise ValueError("Expected variant id, found: {}".format(variant_id)) instance = HanabInstance(deck, num_players, variant_id=variant_id) game = GameState(instance) # TODO: game is not in consistent state game.actions = actions return game def link(game_state: GameState) -> str: compressed = compress_game_state(game_state) return "https://hanab.live/replay-json/{}".format(compressed) # add link method to GameState class GameState.link = link if __name__ == "__main__": for arg in sys.argv[1:]: deck = decompress_deck(arg) c = compress_deck(deck) assert(c == arg) print(deck) inst = HanabiInstance(deck, 5, variant_id = 32) game = GameState(inst) game.play(1) game.play(5) game.clue() # a = compress_game_state(game) # print(a) print(game.link())