Write a util to time each part function, and

refactor all existing solutions to use it. Add
a new entrypoint to run all days against both
sample and real data.

bin/aoc.dart

@@ -0,0 +1,15 @@
+import 'day1.dart' as day1;
+import 'day2.dart' as day2;
+import 'day3.dart' as day3;
+import 'day4.dart' as day4;
+import 'day5.dart' as day5;
+import 'day6.dart' as day6;
+
+void main(List<String> arguments) async {
+  print('');
+  for (final day in [day1.main, day2.main, day3.main, day4.main, day5.main, day6.main]) {
+    await day(arguments);
+    print('');
+  }
+}
+

bin/day1.dart

@@ -2,9 +2,6 @@ import 'package:aoc_2024/lib.dart';
 import 'package:aoc_2024/day1/part_1.dart' as part1;
 import 'package:aoc_2024/day1/part_2.dart' as part2;
 
-void main(List<String> arguments) async {
-  print('Advent of Code - Day 1');
-  print('Part 1: ${await part1.calculate(Resources.real)}');
-  print('Part 2: ${await part2.calculate(Resources.real)}');
+Future<void> main(List<String> arguments) async {
+  await runDay(day: 1, part1: part1.calculate, part2: part2.calculate);
 }
-

bin/day2.dart

@@ -2,8 +2,6 @@ import 'package:aoc_2024/lib.dart';
 import 'package:aoc_2024/day2/part_1.dart' as part1;
 import 'package:aoc_2024/day2/part_2.dart' as part2;
 
-void main(List<String> arguments) async {
-  print('Advent of Code - Day 2');
-  print('Part 1: ${await part1.calculate(Resources.real)}');
-  print('Part 2: ${await part2.calculate(Resources.real)}');
+Future<void> main(List<String> arguments) async {
+  await runDay(day: 2, part1: part1.calculate, part2: part2.calculate);
 }

bin/day3.dart

@@ -2,8 +2,6 @@ import 'package:aoc_2024/lib.dart';
 import 'package:aoc_2024/day3/part_1.dart' as part1;
 import 'package:aoc_2024/day3/part_2.dart' as part2;
 
-void main(List<String> arguments) async {
-  print('Advent of Code - Day 3');
-  print('Part 1: ${await part1.calculate(Resources.real)}');
-  print('Part 2: ${await part2.calculate(Resources.real)}');
+Future<void> main(List<String> arguments) async {
+  await runDay(day: 3, part1: part1.calculate, part2: part2.calculate);
 }

bin/day4.dart

@@ -2,8 +2,6 @@ import 'package:aoc_2024/lib.dart';
 import 'package:aoc_2024/day4/part_1.dart' as part1;
 import 'package:aoc_2024/day4/part_2.dart' as part2;
 
-void main(List<String> arguments) async {
-  print('Advent of Code - Day 4');
-  print('Part 1: ${await part1.calculate(Resources.real)}');
-  print('Part 2: ${await part2.calculate(Resources.real)}');
+Future<void> main(List<String> arguments) async {
+  await runDay(day: 4, part1: part1.calculate, part2: part2.calculate);
 }

bin/day5.dart

@@ -2,8 +2,6 @@ import 'package:aoc_2024/lib.dart';
 import 'package:aoc_2024/day5/part_1.dart' as part1;
 import 'package:aoc_2024/day5/part_2.dart' as part2;
 
-void main(List<String> arguments) async {
-  print('Advent of Code - Day 4');
-  print('Part 1: ${await part1.calculate(Resources.real)}');
-  print('Part 2: ${await part2.calculate(Resources.real)}');
+Future<void> main(List<String> arguments) async {
+  await runDay(day: 5, part1: part1.calculate, part2: part2.calculate);
 }

bin/day6.dart

@@ -2,8 +2,6 @@ import 'package:aoc_2024/lib.dart';
 import 'package:aoc_2024/day6/part_1.dart' as part1;
 import 'package:aoc_2024/day6/part_2.dart' as part2;
 
-void main(List<String> arguments) async {
-  print('Advent of Code - Day 4');
-  print('Part 1: ${await part1.calculate(Resources.real)}');
-  print('Part 2: ${await part2.calculate(Resources.real)}');
+Future<void> main(List<String> arguments) async {
+  await runDay(day: 6, part1: part1.calculate, part2: part2.calculate);
 }

lib/lib.dart

@@ -1 +1,2 @@
 export 'shared/resources.dart';
+export 'shared/runner.dart';

lib/shared/resources.dart

@@ -42,4 +42,7 @@ final class Resources {
     };
     return File(path.join('resources', folder, '${day.name}.txt'));
   }
+
+  @override
+  String toString() => type.name;
 }

lib/shared/runner.dart

@@ -0,0 +1,27 @@
+import 'resources.dart';
+
+typedef DayFunction = Future<int> Function(Resources);
+
+final _stopwatch = Stopwatch();
+
+/// Runs both parts for a day, and prints their output as well as the
+/// elapsed time to run each part.
+Future<void> runDay(
+    {required final int day,
+    required final DayFunction part1,
+    required final DayFunction part2}) async {
+  print('Advent of Code - Day $day');
+  for (final resource in [Resources.sample, Resources.real]) {
+    print('- $resource data:');
+
+    for (final part in [(1, part1), (2, part2)]) {
+      _stopwatch.reset();
+      _stopwatch.start();
+      final result = await part.$2(resource);
+      _stopwatch.stop();
+
+      print(
+          '  - Part ${part.$1}: $result  (${_stopwatch.elapsedMilliseconds}ms)');
+    }
+  }
+}