Added a simple service that replies to messages that contain some string.

StravaDiscordBot/AppOptions.cs

@@ -10,6 +10,7 @@ public class AppOptions
         public LokiOptions Loki { get; set; }
         public string BaseUrl { get; set; }
         public bool LogToConsole { get; set; }
+        public ContainsReplyOptions[] ContainsReplies { get; set; }
     }
 
     public class DiscordOptions
@@ -29,4 +30,10 @@ public class LokiOptions
         public string User { get; set; }
         public string Password { get; set; }
     }
-}
+
+    public class ContainsReplyOptions
+    {
+        public string Contains { get; set; }
+        public string Response { get; set; }
+    }
+}

StravaDiscordBot/Services/ContainsReplyService.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using BetterHostedServices;
+using Discord.WebSocket;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+
+namespace StravaDiscordBot.Services
+{
+    public class ContainsReplyService : CriticalBackgroundService
+    {
+        private readonly AppOptions _appOptions;
+        private readonly ILogger<ContainsReplyService> _logger;
+        private readonly DiscordSocketClient _discordSocketClient;
+
+        public ContainsReplyService(
+            IApplicationEnder applicationEnder,
+            AppOptions appOptions,
+            ILogger<ContainsReplyService> logger,
+            DiscordSocketClient discordSocketClient
+        )
+            : base(applicationEnder)
+        {
+            _appOptions = appOptions;
+            _logger = logger;
+            _discordSocketClient = discordSocketClient;
+        }
+
+        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+        {
+            _discordSocketClient.MessageReceived += MessageReceivedHandler;
+        }
+
+        private async Task MessageReceivedHandler(SocketMessage message)
+        {
+            if (message.Author.IsBot)
+            {
+                return;
+            }
+
+            foreach (var containsReply in _appOptions.ContainsReplies)
+            {
+                string messageContent = message.Content.ToLower();
+                string partSearchingFor = containsReply.Contains.ToLower();
+
+                if (!messageContent.Contains(partSearchingFor))
+                {
+                    continue;
+                }
+
+                await message.Channel.SendMessageAsync(containsReply.Response);
+            }
+        }
+    }
+}

StravaDiscordBot/Startup.cs

@@ -88,6 +88,7 @@ public void ConfigureServices(IServiceCollection services)
             services.AddHostedService<WeeklyLeaderboardHostedService>();
             //services.AddHostedService<ParticipantCleanupHostedService>();
             services.AddHostedService<DiscordServerHostedService>();
+            services.AddHostedService<ContainsReplyService>();
 
             // API