Advent of Code 2022 Day 2(B)

scores = {
    'rock': 1,
    'paper': 2,
    'scissors': 3
}

results = {
    'win': 6,
    'draw': 3,
    'lose': 0
}

action_map = {
    'A': 'rock',
    'B': 'paper',
    'C': 'scissors',
    'X': 'lose',
    'Y': 'draw',
    'Z': 'win'
}

ring = ['scissors', 'paper', 'rock']

def ring_index(index):
    ring_size = len(ring)
    return ((index % ring_size) + ring_size) % ring_size
    
def play(action_index, other):
    other_index = ring.index(other)
    win_action = ring_index(other_index - 1)
    if (action_index == win_action):
        return 'win'
    elif action_index == other_index:
        return 'draw'
    else:
        return 'lose'

def get_desired_response(opponent_action, player_action):
    opponent_action_index = ring.index(opponent_action)
    if player_action == 'win':
        return ring_index(opponent_action_index - 1)
    elif player_action == 'lose':
        return ring_index(opponent_action_index + 1)
    elif player_action == 'draw':
        return opponent_action_index

games = []
with open('input.txt') as file:
    for line in file.readlines():
        actions = line.removesuffix('\n').split(' ')
        opponent_action = action_map[actions[0]]
        player_action = action_map[actions[1]]

        desired_action_index = get_desired_response(opponent_action, player_action)
        action_score = scores[ring[desired_action_index]]
        outcome = play(desired_action_index, opponent_action)

        games.append(action_score + results[outcome])

print("The sum of the scores for all games is:", sum(games))