feat: show bot version on startup and in /catalogger ping

.gitignore

@@ -5,3 +5,4 @@ riderModule.iml
 /_ReSharper.Caches/
 config.ini
 *.DotSettings.user
+.version

Catalogger.Backend/Bot/Commands/MetaCommands.cs

@@ -176,7 +176,7 @@ public class MetaCommands(
         var embed = new EmbedBuilder()
             .WithColour(DiscordUtils.Purple)
             .WithFooter(
-                $"{RuntimeInformation.FrameworkDescription} on {RuntimeInformation.RuntimeIdentifier}"
+                $"{BuildInfo.Version}, {RuntimeInformation.FrameworkDescription} on {RuntimeInformation.RuntimeIdentifier}"
             )
             .WithCurrentTimestamp();
         embed.AddField(
@@ -209,8 +209,7 @@ public class MetaCommands(
             "Numbers",
             $"{CataloggerMetrics.MessagesStored.Value:N0} messages "
                 + $"from {guildCache.Size:N0} servers\n"
-                + $"Cached {channelCache.Size:N0} channels, {roleCache.Size:N0} roles, {emojiCache.Size:N0} emojis",
-            false
+                + $"Cached {channelCache.Size:N0} channels, {roleCache.Size:N0} roles, {emojiCache.Size:N0} emojis"
         );
 
         IEmbed[] embeds = [embed.Build().GetOrThrow()];

Catalogger.Backend/BuildInfo.cs

@@ -0,0 +1,46 @@
+// Copyright (C) 2021-present sam (starshines.gay)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published
+// by the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+namespace Catalogger.Backend;
+
+public static class BuildInfo
+{
+    public static string Hash { get; private set; } = "(unknown)";
+    public static string Version { get; private set; } = "(unknown)";
+
+    public static async Task ReadBuildInfo()
+    {
+        await using var stream = typeof(BuildInfo).Assembly.GetManifestResourceStream("version");
+        if (stream == null)
+            return;
+
+        using var reader = new StreamReader(stream);
+        var data = (await reader.ReadToEndAsync()).Trim().Split("\n");
+        if (data.Length < 3)
+            return;
+
+        Hash = data[0];
+        var dirty = data[2] == "dirty";
+
+        var versionData = data[1].Split("-");
+        if (versionData.Length < 3)
+            return;
+        Version = versionData[0];
+        if (versionData[1] != "0" || dirty)
+            Version += $"+{versionData[2]}";
+        if (dirty)
+            Version += ".dirty";
+    }
+}

Catalogger.Backend/Catalogger.Backend.csproj

@@ -7,8 +7,14 @@
         <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
     </PropertyGroup>
 
+    <Target Name="SetSourceRevisionId" BeforeTargets="InitializeSourceControlInformation">
+        <Exec Command="../build_info.sh" IgnoreExitCode="false">
+        </Exec>
+    </Target>
+
     <ItemGroup>
         <EmbeddedResource Include="Database/**/*.sql" />
+        <EmbeddedResource Watch="false" Include="..\.version" LogicalName="version"/>
     </ItemGroup>
 
     <ItemGroup>

Catalogger.Backend/Extensions/StartupExtensions.cs

@@ -186,9 +186,15 @@ public static class StartupExtensions
 
     public static async Task Initialize(this WebApplication app)
     {
+        await BuildInfo.ReadBuildInfo();
+
         await using var scope = app.Services.CreateAsyncScope();
         var logger = scope.ServiceProvider.GetRequiredService<ILogger>().ForContext<Program>();
-        logger.Information("Starting Catalogger.NET");
+        logger.Information(
+            "Starting Catalogger.NET {Version} ({Hash})",
+            BuildInfo.Version,
+            BuildInfo.Hash
+        );
 
         CataloggerMetrics.Startup = scope
             .ServiceProvider.GetRequiredService<IClock>()

build_info.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+(git rev-parse HEAD &&
+  git describe --tags --always --long &&
+  if test -z "$(git ls-files --exclude-standard --modified --deleted --others)"; then echo clean; else echo dirty; fi) > ../.version