rewrite compress methods for new GameState object, proper error handling
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318
compress.py
318
compress.py
@ -1,15 +1,18 @@
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#! /bin/python3
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import json
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import sys
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from enum import Enum
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from typing import List, Optional
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import more_itertools
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from variants import variant_id, variant_name
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from enum import Enum
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from termcolor import colored
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from typing import List, Optional
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from variants import variant_id, variant_name
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from hanabi import DeckCard, ActionType, Action, GameState, HanabiInstance
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# use same BASE62 as on hanab.live to encode decks
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BASE62 = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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COLORS = 'rygbpt'
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# Helper method, iterate over chunks of length n in a string
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@ -18,68 +21,9 @@ def chunks(s: str, n: int):
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yield s[i:i+n]
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class DeckCard():
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def __init__(self, suitIndex: int, rank: int, deck_index=None):
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self.suitIndex: int = suitIndex
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self.rank: int = rank
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self.deck_index = deck_index
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@staticmethod
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def from_json(deck_card):
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return DeckCard(**deck_card)
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def __eq__(self, other):
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return self.suitIndex == other.suitIndex and self.rank == other.rank
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def __repr__(self):
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return COLORS[self.suitIndex] + str(self.rank)
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def __hash__(self):
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# should be injective enough, we never use cards with ranks differing by 1000
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return 1000 * self.suitIndex + self.rank
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def colorize(self):
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color = ["green", "blue", "magenta", "yellow", "white", "cyan"][self.suitIndex]
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return colored(str(self), color)
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class ActionType(Enum):
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Play = 0
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Discard = 1
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ColorClue = 2
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RankClue = 3
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EndGame = 4
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VoteTerminate = 5 ## hack: online, this is encoded as a 10
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class Action():
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def __init__(self, type_: ActionType, target: int, value: Optional[int] = None):
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self.type = type_
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self.target = target
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self.value = value
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@staticmethod
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def from_json(action):
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return Action(
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ActionType(action['type']),
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int(action['target']),
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action.get('value', None)
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)
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def __repr__(self):
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match self.type:
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case ActionType.Play:
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return "Play card {}".format(self.target)
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case ActionType.Discard:
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return "Discard card {}".format(self.target)
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case ActionType.ColorClue:
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return "Clue color {} to player {}".format(self.value, self.target)
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case ActionType.RankClue:
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return "Clue rank {} to player {}".format(self.value, self.target)
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case ActionType.EndGame:
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return "Player {} ends the game (code {})".format(self.target, self.value)
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case ActionType.VoteTerminate:
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return "Players vote to terminate the game (code {})".format(self.value)
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return "Undefined action"
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# exception thrown by decompression methods if parsing fails
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class InvalidFormatError(ValueError):
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pass
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def compress_actions(actions: List[Action], game_id=None) -> str:
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@ -89,43 +33,78 @@ def compress_actions(actions: List[Action], game_id=None) -> str:
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minType = min(map(lambda a: a.type.value, actions))
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maxType = max(map(lambda a: a.type.value, actions))
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typeRange = maxType - minType + 1
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def compress_action(action):
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## We encode action values with +1 to differentiate
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# null (encoded 0) and 0 (encoded 1)
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value = 0 if action.value is None else action.value + 1
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if action.type == ActionType.VoteTerminate:
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# This is currently a hack, the actual format has a 10 here
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# but we cannot encode this
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value = 0
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with open('vote_terminate_actions.txt', 'a') as f:
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f.write('target: {}, value: {}, game_id: {}\n'.format(action.target, action.value, game_id))
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a = BASE62[typeRange * value + (action.type.value - minType)]
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b = BASE62[action.target]
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try:
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a = BASE62[typeRange * value + (action.type.value - minType)]
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b = BASE62[action.target]
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except IndexError as e:
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raise ValueError("Encoding action failed, value too large, found {}".format(value)) from e
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return a + b
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out = str(minType) + str(maxType)
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out += ''.join(map(compress_action, actions))
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return out
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return "{}{}{}".format(
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minType,
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maxType,
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''.join(map(compress_action, actions))
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)
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def decompress_actions(actions_str: str) -> List[Action]:
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if not len(actions_str >= 2):
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raise InvalidFormatError("min/max range not specified, found: {}".format(actions_str))
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try:
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minType = int(actions_str[0])
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maxType = int(actions_str[1])
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except ValueError:
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raise ValueError("invalid action string: invalid min/max range")
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assert(maxType >= minType)
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if not len(actions_str) % 2 == 0:
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raise ValueError("Invalid length of action str")
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except ValueError as e:
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raise InvalidFormatError(
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"min/max range of actions not specified, expected two integers, found {}".format(actions_str[:2])
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) from e
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if not minType <= maxType:
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raise InvalidFormatError("min/max range illegal, found [{},{}]".format(minType, maxType))
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typeRange = maxType - minType + 1
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def decompress_action(action):
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actionType = ActionType((BASE62.index(action[0]) % typeRange) + minType)
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value = None
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if actionType not in [actionType.Play, actionType.Discard]:
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## We encode values with +1 to differentiate null (encoded 0) and 0 (encoded 1)
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value = BASE62.index(action[0]) // typeRange - 1
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if value == -1:
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value = None
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if not len(actions_str) % 2 == 0:
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raise InvalidFormatError("Invalid action string length: Expected even number of characters")
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for (index, char) in enumerate(actions_str[2:]):
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if not char in BASE62:
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raise InvalidFormatError(
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"Invalid character at index {}: Found {}, expected one of {}".format(
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index, char, BASE62
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)
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)
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def decompress_action(index, action):
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try:
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action_type_value = (BASE62.index(action[0]) % typeRange) + minType
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action_type = ActionType(action_type_value)
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except ValueError as e:
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raise InvalidFormatError(
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"Invalid action type at action {}: Found {}, expected one of {}".format(
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index, actionTypeValue,
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[action_type.value for action_type in ActionType]
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)
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) from e
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## We encode values with +1 to differentiate null (encoded 0) and 0 (encoded 1)
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value = BASE62.index(action[0]) // typeRange - 1
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if value == -1:
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value = None
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if action_type in [ActionType.Play, ActionType.Discard]:
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if value is not None:
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raise InvalidFormatError(
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"Invalid action value: Action at action index {} is Play/Discard, expected value None, found: {}".format(value)
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)
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target = BASE62.index(action[1])
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return Action(actionType, target, value)
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return [decompress_action(a) for a in chunks(actions_str[2:], 2)]
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return Action(action_type, target, value)
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return [decompress_action(idx, a) for (idx, a) in enumerate(chunks(actions_str[2:], 2))]
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def compress_deck(deck: List[DeckCard]) -> str:
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@ -133,83 +112,136 @@ def compress_deck(deck: List[DeckCard]) -> str:
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minRank = min(map(lambda c: c.rank, deck))
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maxRank = max(map(lambda c: c.rank, deck))
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rankRange = maxRank - minRank + 1
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def compress_card(card):
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return BASE62[rankRange * card.suitIndex + (card.rank - minRank)]
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out = str(minRank) + str(maxRank)
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out += ''.join(map(compress_card, deck))
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return out
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try:
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return BASE62[rankRange * card.suitIndex + (card.rank - minRank)]
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except IndexError as e:
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raise InvalidFormatError(
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"Could not compress card, suit or rank too large. Found: {}".format(card)
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) from e
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return "{}{}{}".format(
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minRank,
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maxRank,
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''.join(map(compress_card, deck))
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)
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def decompress_deck(deck_str: str) -> List[DeckCard]:
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assert(len(deck_str) >= 2)
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minRank = int(deck_str[0])
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maxRank = int(deck_str[1])
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assert(maxRank >= minRank)
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if len(deck_str) < 2:
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raise InvalidFormatError("min/max rank range not specified, found: {}".format(deck_str))
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try:
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minRank = int(deck_str[0])
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maxRank = int(deck_str[1])
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except ValueError as e:
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raise InvalidFormatError(
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"min/max rank range not specified, expected two integers, found {}".format(actions_str[:2])
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) from e
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if not maxRank >= minRank:
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raise InvalidFormatError(
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"Invalid rank range, found [{},{}]".format(minRank, maxRank)
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)
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rankRange = maxRank - minRank + 1
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for (index, char) in enumerate(deck_str[2:]):
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if not char in BASE62:
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raise InvalidFormatError(
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"Invalid character at index {}: Found {}, expected one of {}".format(
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index, char, BASE62
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)
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)
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def decompress_card(card_char):
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index = BASE62.index(card_char)
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suitIndex = index // rankRange
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rank = index % rankRange + minRank
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return DeckCard(suitIndex, rank)
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return [decompress_card(c) for c in deck_str[2:]]
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def compressJSONGame(game_json: dict) -> str:
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out = ""
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num_players = len(game_json.get('players', []))
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num_players = game_json.get('num_players', num_players)
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if not 2 <= num_players:
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raise ValueError("Invalid JSON game: could not parse num players")
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out = "{}".format(num_players)
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try:
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deck = game_json['deck']
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except:
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raise KeyError("JSON game contains no deck")
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assert(len(deck) > 0)
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if type(deck[0]) != DeckCard:
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try:
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deck = [DeckCard.from_json(card) for card in deck]
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except:
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raise ValueError("invalid jSON format: could not convert to deck cards")
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# now, deck is in the correct form
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out += compress_deck(deck)
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out += "," # first part finished
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actions = game_json.get('actions', [])
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if len(actions) == 0:
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print("WARNING: action array is empty")
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else:
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if type(actions[0]) != Action:
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try:
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actions = [Action.from_json(action) for action in actions]
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except:
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raise ValueError("invalid JSON format: could not convert to actions")
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out += compress_actions(actions)
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out += ","
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variant = game_json.get("variant", "No Variant")
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out += str(variant_id(variant))
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return ''.join(more_itertools.intersperse("-", out, 20))
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# compresses a standard GameState object into hanab.live format
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# which can be used in json replay links
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# The GameState object has to be standard / fitting hanab.live variants,
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# otherwise compression is not possible
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def compress_game_state(state: GameState) -> str:
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if not state.instance.is_standard():
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raise ValueError("Cannot compress non-standard hanabi instance")
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out = "{}{},{},{}".format(
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state.instance.num_players,
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compress_deck(state.instance.deck),
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compress_actions(state.actions),
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state.instance.variant_id # Note that a sane default is chosen if construction did not provide one
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)
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with_dashes = ''.join(more_itertools.intersperse("-", out, 20))
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return with_dashes
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def decompressJSONGame(game_str: str)->dict:
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game = {}
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def decompress_game_state(game_str: str) -> GameState:
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game_str = game_str.replace("-", "")
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parts = game_str.split(",")
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if not len(parts) == 3:
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raise InvalidFormatError(
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"Expected 3 comma-separated parts of game, found {}".format(
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len(parts)
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)
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)
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[players_deck, actions, variant_id] = parts
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if len(players_deck) == 0:
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raise InvalidFormatError("Expected nonempty first part")
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try:
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[players_deck, actions, variant_id] = game_str.split(",")
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except:
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raise ValueError("Invalid format of compressed string!")
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game['players'] = ["Alice", "Bob", "Cathy", "Donald", "Emily"][:int(players_deck[0])]
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game['deck'] = decompress_deck(players_deck[1:])
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game['actions'] = decompress_actions(actions)
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game['options'] = {
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"variant": variant_name(int(variant_id))
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}
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num_players = int(players_deck[0])
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except ValueError as e:
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raise InvalidFormatError(
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"Expected number of players, found: {}".format(players_deck[0])
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) from e
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try:
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deck = decompress_deck(players_deck[1:])
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except InvalidFormatError as e:
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raise InvalidFormatError("Error while parsing deck") from e
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try:
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actions = decompress_actions(actions)
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except InvalidFormatError as e:
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raise InvalidFormatError("Error while parsing actions") from e
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try:
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variant_id = int(variant_id)
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except ValueError:
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raise ValueError("Expected variant id, found: {}".format(variant_id))
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instance = HanabInstance(deck, num_players, variant_id=variant_id)
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game = GameState(instance)
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# TODO: game is not in consistent state
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game.actions = actions
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return game
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def link(game_json: dict) -> str:
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compressed = compressJSONGame(game_json)
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def link(game_state: GameState) -> str:
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compressed = compress_game_state(game_state)
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return "https://hanab.live/replay-json/{}".format(compressed)
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# add link method to GameState class
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GameState.link = link
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if __name__ == "__main__":
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for arg in sys.argv[1:]:
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deck = decompress_deck(arg)
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c = compress_deck(deck)
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assert(c == arg)
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print(deck)
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inst = HanabiInstance(deck, 5, variant_id = 32)
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game = GameState(inst)
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game.play(1)
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game.play(5)
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game.clue()
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# a = compress_game_state(game)
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# print(a)
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print(game.link())
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