Migrate DiscordChatExporter.Cli to CliFx

DiscordChatExporter.Cli/Commands/GetChannelsCommand.cs

@@ -0,0 +1,34 @@
+using System.Linq;
+using System.Threading.Tasks;
+using CliFx.Attributes;
+using CliFx.Services;
+using DiscordChatExporter.Core.Models;
+using DiscordChatExporter.Core.Services;
+
+namespace DiscordChatExporter.Cli.Commands
+{
+    [Command("channels", Description = "Get the list of channels in the given guild.")]
+    public class GetChannelsCommand : TokenCommandBase
+    {
+        [CommandOption("guild", 'g', IsRequired = true, Description = "Guild ID.")]
+        public string GuildId { get; set; }
+
+        public GetChannelsCommand(DataService dataService)
+            : base(dataService)
+        {
+        }
+
+        public override async Task ExecuteAsync(IConsole console)
+        {
+            // Get channels
+            var channels = await DataService.GetGuildChannelsAsync(GetToken(), GuildId);
+
+            // Filter and order channels
+            channels = channels.Where(c => c.Type == ChannelType.GuildTextChat).OrderBy(c => c.Name).ToArray();
+
+            // Print result
+            foreach (var channel in channels)
+                console.Output.WriteLine($"{channel.Id} | {channel.Name}");
+        }
+    }
+}