From 7de54241f1f0dc29fb380b7a234834195434e310 Mon Sep 17 00:00:00 2001
From: Sven Heidemann <sven.heidemann@sh-edraft.de>
Date: Tue, 6 Dec 2022 07:49:16 +0100
Subject: [PATCH] day 6

---
 src/aoc/aoc.py |  4 +++-
 src/day6.py    | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 67 insertions(+), 1 deletion(-)
 create mode 100644 src/day6.py

diff --git a/src/aoc/aoc.py b/src/aoc/aoc.py
index 2f80946..6352b59 100644
--- a/src/aoc/aoc.py
+++ b/src/aoc/aoc.py
@@ -23,8 +23,10 @@ def get_input(year: int, day: int) -> str:
     original code from https://github.com/anthonywritescode/aoc2022/blob/main/support/support.py
     """
     file = f'input/{year}/input_{day}.txt'
-    if not os.path.exists(file):
+    if not os.path.exists(os.path.dirname(file)):
         os.makedirs(os.path.dirname(file))
+
+    if not os.path.exists(file):
         url = f'https://adventofcode.com/{year}/day/{day}/input'
         req = urllib.request.Request(url, headers=_get_cookie_headers())
         txt = urllib.request.urlopen(req).read().decode()
diff --git a/src/day6.py b/src/day6.py
new file mode 100644
index 0000000..60dc655
--- /dev/null
+++ b/src/day6.py
@@ -0,0 +1,64 @@
+from typing import Optional
+
+from cpl_core.console import Console
+from cpl_core.utils import String
+from cpl_query.enumerable import Enumerable
+from cpl_query.extension import List
+from cpl_core.pipes import *
+
+from aoc.aoc import get_input
+
+# global vars
+day = 6
+aoc_input = get_input(2022, day)
+# aoc_input = "mjqjpqmgbljsphdztnvjfqwrcgsmlb"
+
+
+class Marker:
+
+    def __init__(self, part2=False):
+        self._chars = List(str)
+        self._max_count = 14 if part2 else 4
+
+    @property
+    def chars(self) -> List[str]:
+        return self._chars
+
+    @property
+    def is_valid(self) -> bool:
+        return self._max_count == self._chars.count() == self._chars.distinct().count()
+
+    def add_char(self, c: str):
+        if self._chars.count() == self._max_count:
+            self._chars.remove_at(0)
+
+        self._chars.add(c)
+
+
+def part1():
+    marker = Marker()
+    for i, c in enumerate(aoc_input):
+        marker.add_char(c)
+        if not marker.is_valid:
+            continue
+
+        Console.write_line(f'Found marker: {"".join(marker.chars)} at {i + 1}')
+        break
+
+
+def part2():
+    marker = Marker(True)
+    for i, c in enumerate(aoc_input):
+        marker.add_char(c)
+        if not marker.is_valid:
+            continue
+
+        Console.write_line(f'Found marker: {"".join(marker.chars)} at {i + 1}')
+        break
+
+
+if __name__ == '__main__':
+    Console.write_line(f'Advent of code day {day}')
+    part1()
+    part2()
+    Console.write_line()