import json from enum import Enum from typing import List, Optional import more_itertools from variants import variant_id, variant_name BASE62 = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"; COLORS = 'rygbpt' # 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] class DeckCard(): def __init__(self, suitIndex: int, rank: int): self.suitIndex: int = suitIndex self.rank: int = rank @staticmethod def from_json(deck_card): return DeckCard(**deck_card) def __eq__(self, other): return self.suitIndex == other.suitIndex and self.rank == other.rank def __repr__(self): return COLORS[self.suitIndex] + str(self.rank) class ActionType(Enum): Play = 0 Discard = 1 ColorClue = 2 RankClue = 3 EndGame = 4 VoteTerminate = 5 class Action(): def __init__(self, type_: ActionType, target: int, value: Optional[int] = None): self.type = type_ self.target = target self.value = value @staticmethod def from_json(action): return Action( ActionType(action['type']), int(action['target']), action.get('value', None) ) def __repr__(self): match self.type: case ActionType.Play: return "Play card {}".format(self.target) case ActionType.Discard: return "Discard card {}".format(self.target) case ActionType.ColorClue: return "Clue color {} to player {}".format(self.value, self.target) case ActionType.RankClue: return "Clue rank {} to player {}".format(self.value, self.target) case ActionType.EndGame: return "Player {} ends the game (code {})".format(self.target, self.value) case ActionType.VoteTerminate: return "Players vote to terminate the game (code {})".format(self.value) return "Undefined action" def compress_actions(actions: List[Action]) -> 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 a = BASE62[typeRange * value + (action.type.value - minType)] b = BASE62[action.target] return a + b out = str(minType) + str(maxType) out += ''.join(map(compress_action, actions)) return out def decompress_actions(actions_str: str) -> List[Action]: try: minType = int(actions_str[0]) maxType = int(actions_str[1]) except ValueError: raise ValueError("invalid action string: invalid min/max range") assert(maxType >= minType) if not len(actions_str) % 2 == 0: raise ValueError("Invalid length of action str") typeRange = maxType - minType + 1 def decompress_action(action): actionType = ActionType((BASE62.index(action[0]) % typeRange) + minType) value = None if actionType not in [actionType.Play, actionType.Discard]: ## 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 target = BASE62.index(action[1]) return Action(actionType, target, value) return [decompress_action(a) for a in 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): return BASE62[rankRange * card.suitIndex + (card.rank - minRank)] out = str(minRank) + str(maxRank) out += ''.join(map(compress_card, deck)) return out def decompress_deck(deck_str: str) -> List[DeckCard]: assert(len(deck_str) >= 2) minRank = int(deck_str[0]) maxRank = int(deck_str[1]) assert(maxRank >= minRank) rankRange = maxRank - minRank + 1 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:]] def compressJSONGame(game_json: dict) -> str: out = "" num_players = len(game_json.get('players', [])) num_players = game_json.get('num_players', num_players) if not 2 <= num_players: raise ValueError("Invalid JSON game: could not parse num players") out = "{}".format(num_players) try: deck = game_json['deck'] except: raise KeyError("JSON game contains no deck") assert(len(deck) > 0) if type(deck[0]) != DeckCard: try: deck = [DeckCard.from_json(card) for card in deck] except: raise ValueError("invalid jSON format: could not convert to deck cards") # now, deck is in the correct form out += compress_deck(deck) out += "," # first part finished actions = game_json.get('actions', []) if len(actions) == 0: print("WARNING: action array is empty") else: if type(actions[0]) != Action: try: actions = [Action.from_json(action) for action in actions] except: raise ValueError("invalid JSON format: could not convert to actions") out += compress_actions(actions) out += "," variant = game_json.get("variant", "No Variant") out += str(variant_id(variant)) return ''.join(more_itertools.intersperse("-", out, 20)) def decompressJSONGame(game_str: str)->dict: game = {} game_str = game_str.replace("-", "") try: [players_deck, actions, variant_id] = game_str.split(",") except: raise ValueError("Invalid format of compressed string!") game['players'] = ["Alice", "Bob", "Cathy", "Donald", "Emily"][:int(players_deck[0])] game['deck'] = decompress_deck(players_deck[1:]) game['actions'] = decompress_actions(actions) game['options'] = { "variant": variant_name(int(variant_id)) } return game def link(game_json: dict) -> str: compressed = compressJSONGame(game_json) return "https://hanab.live/replay-json/{}".format(compressed)