Initial webhook support

2026-07-31 00:29:24 +03:00 · 2024-01-28 18:51:18 +03:00
parent aaf27a9a06
commit 1088037e58
4 changed files with 125 additions and 2 deletions
@@ -0,0 +1,75 @@
+using BotFramework.Abstractions.UpdateProvider;
+using BotFramework.Config;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Newtonsoft.Json;
+using System.Threading.Tasks;
+using Telegram.Bot;
+using Telegram.Bot.Types;
+
+namespace Kruzya.TelegramBot.Core.Controllers
+{
+    [Route("/Telegram")]
+    public class Telegram : Controller
+    {
+        private const string SecretTokenHeader = "X-Telegram-Bot-Api-Secret-Token";
+
+        private readonly ILogger<Telegram> _logger;
+        private readonly ITelegramBotClient _client;
+        private readonly IUpdateTarget _updateTarget;
+        private readonly string _secretToken;
+
+        public Telegram(ILogger<Telegram> logger, ITelegramBotClient client, IUpdateTarget updateTarget, IOptions<BotConfig> config)
+        {
+            _logger = logger;
+            _client = client;
+            _updateTarget = updateTarget;
+
+            _secretToken = config.Value.Webhook.SecretToken;
+            if (string.IsNullOrEmpty(_secretToken))
+            {
+                _secretToken = null;
+            }
+        }
+
+        [Route("/WebHook")]
+        [HttpPost]
+        public IActionResult Index()
+        {
+            if (_secretToken != null && !Request.Headers.ContainsKey(SecretTokenHeader))
+            {
+                _logger.LogWarning("Someone tried push update without secret key in headers");
+                return BadRequest();
+            }
+
+            var ok = (_secretToken == null || Request.Headers[SecretTokenHeader] == _secretToken);
+            if (!ok)
+            {
+                _logger.LogWarning("Someone tried push update with wrong secret key in headers");
+                return BadRequest();
+            }
+
+            LaunchHandle();
+            return Ok();
+        }
+
+        private void LaunchHandle()
+        {
+            try
+            {
+                var update = JsonConvert.DeserializeObject<Update>(Request.Body.ToString());
+                if (update == null)
+                {
+                    throw new System.Exception("Invalid request body");
+                }
+
+                _updateTarget.Push(update);
+            }
+            catch (System.Exception e)
+            {
+                _logger.LogError($"Error occured when handling a new update: {e}");
+            }
+        }
+    }
+}