From ef3d1d1081f8de5af8ce2140d786016dd2a7a3b2 Mon Sep 17 00:00:00 2001
From: aaron <aaron@duckpond.ch>
Date: Fri, 2 Dec 2022 23:54:10 +0100
Subject: [PATCH] solved day 2

---
 2/rockpaperscissors.py | 108 ++++++++++++++++++++++++++++++++---------
 README.md              |   6 +++
 2 files changed, 90 insertions(+), 24 deletions(-)

diff --git a/2/rockpaperscissors.py b/2/rockpaperscissors.py
index 51c92e2..bab97fc 100644
--- a/2/rockpaperscissors.py
+++ b/2/rockpaperscissors.py
@@ -1,40 +1,100 @@
 from aocd.models import Puzzle
 from aocd import submit
 
-class Game:
+def eval_score(game_round: list) -> int:
+    '''
+        calculate game score for single round
+    '''
 
-    # data fields
-    moves = list()
-    opponent = list()
+    score = 0
+    player_a = game_round[1]
+    player_b = game_round[0]
+
+    match player_b:
+        case 'A': # rock
+            if player_a == 'X': # rock
+                score += 3
+                score += 1
+            if player_a == 'Y': # paper
+                score += 6
+                score += 2
+            if player_a == 'Z': # scissors
+                score += 0
+                score += 3
+        case 'B': # paper
+            if player_a == 'X': # rock
+                score += 0
+                score += 1
+            if player_a == 'Y': # paper
+                score += 3
+                score += 2
+            if player_a == 'Z': # scissors
+                score += 6
+                score += 3
+        case 'C': # scissors
+            if player_a == 'X': # rock
+                score += 6
+                score += 1
+            if player_a == 'Y': # paper
+                score += 0
+                score += 2
+            if player_a == 'Z': # scissors
+                score += 3
+                score += 3
+    return score
+
+def manipulate_round(game_round: list) -> list:
+    '''
+        manipulate round according to rule set
+    '''
+    move = ''
+    match game_round[0]:
+        case 'A': # rock
+            if game_round[1] == 'X': # lose
+                move = 'Z'
+            if game_round[1] == 'Y': # draw
+                move = 'X'
+            if game_round[1] == 'Z': # win
+                move = 'Y'
+        case 'B': # paper
+            if game_round[1] == 'X': # lose
+                move = 'X'
+            if game_round[1] == 'Y': # draw
+                move = 'Y'
+            if game_round[1] == 'Z': # win
+                move = 'Z'
+        case 'C': # scissors
+            if game_round[1] == 'X': # lose
+                move = 'Y'
+            if game_round[1] == 'Y': # draw
+                move = 'Z'
+            if game_round[1] == 'Z': # win
+                move = 'X'
+    return [game_round[0], move]
 
-    def __init__(self, moves : list, opponent : list) -> None:
-        self.moves = moves.copy()
-        self.opponent = opponent.copy()
 
 def parse_input(data: list) -> list:
     '''
         parses the input data and generates a list of elfs
     '''
-    # split input string into move sets
-    splits = data.split('\n')
-    # split move set list into game sets
-    n = 3
-    games = [ splits[i:i+n] for i in range(0, len(splits), n) ]
-    print(games)
+    # split move set into a list of rounds
+    return [ move.split() for move in data.split('\n')]
 
 if __name__ == "__main__":
     # get puzzle and parse data
     puzzle = Puzzle(year=2022, day=2)
-    data = puzzle.input_data
-    parse_input(data)
-    print(len(data))
+    game = parse_input(puzzle.input_data)
 
+    # part a: calculate total score
+    total = 0
+    for game_round in game:
+        total += eval_score(game_round)
+    print(f'answer part a: total points -> {total}')
+    submit(total, part='a', day=2, year=2022)
 
-    # part a: submit biggest number of calories
-    answer =  0
-    print(f'answer part a: {answer}')
-    #submit(answer, part='a', day=2, year=2022)
-
-    # part b: submit the calorie sum of the top 3 elfs
-    #print(f'answer part b: {answer}')
-    #submit(answer, part='b', day=2, year=2022)
+    # part b: calculate total score using the secret list
+    total = 0
+    for game_round in game:
+        total += eval_score(manipulate_round(game_round))
+    print(f'answer part b: total points -> {total}')
+    submit(total, part='b', day=2, year=2022)
diff --git a/README.md b/README.md
index a02dde3..fea91ae 100644
--- a/README.md
+++ b/README.md
@@ -4,3 +4,9 @@
 
 * [python aocd library](https://pypi.org/project/advent-of-code-data/)
 
+## session token
+
+```bash
+$ cat .env
+export AOC_SESSION="53616c..."
+```