Add day 1

.gitignore

@@ -4,3 +4,5 @@ obj/
 riderModule.iml
 /_ReSharper.Caches/
 .idea/.idea.AdventOfCode/.idea
+AdventOfCode.sln.DotSettings.user
+BenchmarkDotNet.Artifacts

AdventOfCode.csproj

@@ -2,13 +2,19 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net7.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>
 
     <ItemGroup>
+      <PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
       <PackageReference Include="Spectre.Console" Version="0.45.0" />
     </ItemGroup>
 
+    <ItemGroup>
+      <None Remove="Inputs\Day1.txt" />
+      <EmbeddedResource Include="Inputs\Day1.txt" />
+    </ItemGroup>
+
 </Project>

DayBenchmarker.cs

@@ -0,0 +1,29 @@
+using AdventOfCode.Days;
+using BenchmarkDotNet.Attributes;
+
+namespace AdventOfCode;
+
+[ShortRunJob]
+[MemoryDiagnoser(false)]
+public class DayBenchmark
+{
+    private Day Day { get; } = new Day1();
+
+    [GlobalSetup]
+    public void Setup()
+    {
+        Day.ReadInput();
+    }
+
+    [Benchmark]
+    public void Part1()
+    {
+        Day.RunPart1(display: false);
+    }
+
+    [Benchmark]
+    public void Part2()
+    {
+        Day.RunPart2(display: false);
+    }
+}

Days/Day.cs

@@ -1,3 +1,5 @@
+using System.Reflection;
+
 namespace AdventOfCode.Days;
 
 public abstract class Day
@@ -5,8 +7,18 @@ public abstract class Day
     public abstract int Number { get; }
     public abstract string Name { get; }
 
-    public abstract void RunPart1();
+    protected string Input { get; private set; } = null!;
-    public abstract void RunPart2();
+
+    public abstract void RunPart1(bool display = true);
+    public abstract void RunPart2(bool display = true);
+
+    public void ReadInput()
+    {
+        using var inputStream = Assembly.GetExecutingAssembly()
+            .GetManifestResourceStream($"AdventOfCode.Inputs.Day{Number}.txt")!;
+
+        Input = new StreamReader(inputStream).ReadToEnd();
+    }
 
     public override string ToString()
     {

Days/Day2.cs

@@ -1,19 +0,0 @@
-using Spectre.Console;
-
-namespace AdventOfCode.Days;
-
-public class Day2 : Day
-{
-    public override int Number { get; } = 2;
-    public override string Name { get; } = "Second day";
-    
-    public override void RunPart1()
-    {
-        AnsiConsole.WriteLine("Day 2 result");
-    }
-    
-    public override void RunPart2()
-    {
-        AnsiConsole.WriteLine("Day 2 result");
-    }
-}

EnumerableExtensions.cs

@@ -0,0 +1,25 @@
+namespace AdventOfCode;
+
+public static class EnumerableExtensions
+{
+    public static IEnumerable<TSource> Flatten<TSource>(this TSource root, Func<TSource, IEnumerable<TSource>> flattener)
+    {
+        var toVisit = new Stack<TSource>();
+        toVisit.Push(root);
+
+        while (toVisit.TryPop(out var node))
+        {
+            yield return node;
+
+            foreach (var child in flattener(node))
+            {
+                toVisit.Push(child);
+            }
+        }
+    }
+
+    public static TValue GetValueOrDefault<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key, TValue defaultValue)
+    {
+        return dictionary.TryGetValue(key, out var value) ? value : defaultValue;
+    }
+}

Program.cs

@@ -1,22 +1,74 @@
-
+using System.Diagnostics;
 using System.Reflection;
+using AdventOfCode;
 using AdventOfCode.Days;
+using BenchmarkDotNet.Running;
 using Spectre.Console;
 
+// Benchmark
+if (args is ["--bench" or "-b"])
+{
+    BenchmarkRunner.Run<DayBenchmark>();
+    Environment.Exit(0);
+}
+
+// Normal run
 var days = Assembly.GetAssembly(typeof(Day))!.GetTypes()
     .Where(t => t.IsAssignableTo(typeof(Day)) && t.GetConstructor(Type.EmptyTypes) != null && !t.IsAbstract)
     .Select(t => (Day)Activator.CreateInstance(t)!);
 
 var select = new SelectionPrompt<Day>()
     .Title("[cyan]Select a [yellow]day[/] to run:[/]")
-    .AddChoices(days);
+    .AddChoices(days.OrderByDescending(d => d.Number));
 
 var selectedDay = AnsiConsole.Prompt(select);
 
+var stopWatch = new Stopwatch();
+
+// Read input
+try
+{
+    selectedDay.ReadInput();
+}
+catch (Exception e)
+{
+    AnsiConsole.WriteException(e);
+
+    Environment.Exit(1);
+}
+
+// Part 1
 AnsiConsole.MarkupLine($"[cyan]Running [yellow]{selectedDay}[/]...[/]\n");
 
 AnsiConsole.MarkupLine("[cyan]Part [yellow]1[/] result:[/]");
-selectedDay.RunPart1();
 
+try
+{
+    stopWatch.Start();
+    selectedDay.RunPart1();
+    stopWatch.Stop();
+
+    AnsiConsole.MarkupLine($"[red]Approximate run time: [yellow]{stopWatch.ElapsedTicks / (double)Stopwatch.Frequency * 1000:F3} ms[/][/]");
+}
+catch (Exception e)
+{
+    AnsiConsole.WriteException(e);
+}
+
+stopWatch.Reset();
+
+// Part 2
 AnsiConsole.MarkupLine("\n[cyan]Part [yellow]2[/] result:[/]");
-selectedDay.RunPart2();
+
+try
+{
+    stopWatch.Start();
+    selectedDay.RunPart2();
+    stopWatch.Stop();
+
+    AnsiConsole.MarkupLine($"[red]Approximate run time: [yellow]{stopWatch.ElapsedTicks / (double)Stopwatch.Frequency * 1000:F3} ms[/][/]");
+}
+catch (Exception e)
+{
+    AnsiConsole.WriteException(e);
+}

README.md

@@ -0,0 +1,15 @@
+# Advent of Code
+
+![CLI Preview](Preview.png)
+
+Advent of Code made in **C#**, using **[Spectre.Console](https://spectreconsole.net/)** for **console display** and **[BenchmarkDotNet](https://benchmarkdotnet.org/)** for **benchmarks**
+
+## Build and run
+
+- **Install [.Net 7 SDK](https://dotnet.microsoft.com/en-us/download)** if needed
+- **Clone** the repository
+- In a shell, execute `dotnet run`
+
+## Benchmarks
+
+> Todo...

StringExtensions.cs

@@ -0,0 +1,17 @@
+namespace AdventOfCode;
+
+public static partial class StringExtensions
+{
+    public static IEnumerable<string> ReadAllLines(this StringReader reader)
+    {
+        while (reader.ReadLine() is { } line)
+        {
+            yield return line;
+        }
+    }
+
+    public static IEnumerable<string> ReadAllLines(this string text)
+    {
+        return new StringReader(text).ReadAllLines();
+    }
+}