From d270ffbf1a4c43886f3d3dacc80dc1626f4db79d Mon Sep 17 00:00:00 2001
From: Heiko Ludwig <hl-github@h4l5.de>
Date: Fri, 1 Dec 2023 20:12:46 +0100
Subject: [PATCH] solve day 01 part 1

---
 day_01/program.py      | 27 +++++++++++++++++++++++++--
 day_01/test_program.py |  7 +++++++
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/day_01/program.py b/day_01/program.py
index 7086770..1448d88 100755
--- a/day_01/program.py
+++ b/day_01/program.py
@@ -2,14 +2,37 @@
 
 # https://adventofcode.com/2023/day/1
 
+import re
+
+
 def get_lines(filename: str) -> list:
     with open(filename, "r") as file:
         return [line.strip() for line in file.readlines()]
 
 
+def get_cal_val(line: str) -> int:
+    found_first = False
+    first = ""
+    last = ""
+    for test_char in line:
+        if test_char.isdigit():
+            if found_first:
+                last = test_char
+            else:
+                first = test_char
+                found_first = True
+    if last == "":
+        last = first
+    return int(first + last)
+
+
 def main():
-    lines = get_lines("test-input.txt")
-    # lines = get_lines("input.txt")
+    # lines = get_lines("test-input.txt")
+    lines = get_lines("input.txt")
+    sum_cal_val = 0
+    for line in lines:
+        sum_cal_val += get_cal_val(line)
+    print(f"Part 1: The sum of all calibration values is {sum_cal_val}.")
 
 
 if __name__ == '__main__':
diff --git a/day_01/test_program.py b/day_01/test_program.py
index e00b790..ac7ecb3 100755
--- a/day_01/test_program.py
+++ b/day_01/test_program.py
@@ -8,6 +8,13 @@ class TestThing(unittest.TestCase):
     def setUp(self):
         pass
 
+    def testGetCalVal(self):
+        self.assertEqual(program.get_cal_val("a2c3"), 23)
+        self.assertEqual(program.get_cal_val("1c3d"), 13)
+        self.assertEqual(program.get_cal_val("3a2c3er"), 33)
+        self.assertEqual(program.get_cal_val("1234567"), 17)
+        self.assertEqual(program.get_cal_val("asdw3wemr"), 33)
+
 
 if __name__ == '__main__':
     unittest.main()