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2026-03-10 14:23:42 +03:00
commit 6c8b9334c8
106 changed files with 4538 additions and 0 deletions
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+using System.Net.Http.Json;
+using System.Text;
+using Microsoft.Extensions.Logging;
+using PepperBot.Application.Interfaces;
+using PepperBot.Domain;
+
+namespace PepperBot.Infrastructure.Telegram;
+
+public class TelegramNotifier : ITelegramNotifier
+{
+    private readonly HttpClient _httpClient;
+    private readonly ILogger<TelegramNotifier> _logger;
+    private readonly string _botToken;
+    private readonly string _chatId;
+
+    public TelegramNotifier(ILogger<TelegramNotifier> logger)
+    {
+        _logger = logger;
+        _botToken = Environment.GetEnvironmentVariable("TELEGRAM_BOT_TOKEN") ?? string.Empty;
+        _chatId = Environment.GetEnvironmentVariable("TELEGRAM_CHAT_ID") ?? string.Empty;
+
+        if (string.IsNullOrWhiteSpace(_botToken) || string.IsNullOrWhiteSpace(_chatId))
+        {
+            _logger.LogWarning("TELEGRAM_BOT_TOKEN или TELEGRAM_CHAT_ID не заданы. Отправка сообщений отключена.");
+        }
+
+        _httpClient = new HttpClient();
+    }
+
+    public async Task NotifyNewDealAsync(Deal deal, CancellationToken cancellationToken)
+    {
+        if (string.IsNullOrWhiteSpace(_botToken) || string.IsNullOrWhiteSpace(_chatId))
+        {
+            return;
+        }
+
+        var url = $"https://api.telegram.org/bot{_botToken}/sendMessage";
+
+        var textBuilder = new StringBuilder();
+        textBuilder.AppendLine($"🔥 *{Escape(deal.Title)}*");
+
+        if (deal.CurrentPrice is not null)
+        {
+            textBuilder.AppendLine($"Цена: {deal.CurrentPrice:0.##} ₽");
+        }
+
+        if (deal.RetailPrice is not null && deal.RetailPrice > 0 && deal.CurrentPrice is not null)
+        {
+            textBuilder.AppendLine($"Старая цена: {deal.RetailPrice:0.##} ₽");
+        }
+
+        if (deal.PercentOff is not null)
+        {
+            textBuilder.AppendLine($"Скидка: {deal.PercentOff}%");
+        }
+
+        textBuilder.AppendLine();
+        textBuilder.AppendLine($"Магазин: {Escape(deal.StoreName)}");
+        textBuilder.AppendLine();
+        textBuilder.AppendLine($"[Открыть на Pepper.ru]({Escape(deal.DealUrl)})");
+
+        var payload = new
+        {
+            chat_id = _chatId,
+            text = textBuilder.ToString(),
+            parse_mode = "Markdown"
+        };
+
+        var response = await _httpClient.PostAsJsonAsync(url, payload, cancellationToken);
+
+        if (!response.IsSuccessStatusCode)
+        {
+            var body = await response.Content.ReadAsStringAsync(cancellationToken);
+            _logger.LogWarning("Не удалось отправить сообщение в Telegram: {Status} {Body}", response.StatusCode, body);
+        }
+    }
+
+    private static string Escape(string value)
+    {
+        return value
+            .Replace("_", "\\_")
+            .Replace("*", "\\*")
+            .Replace("[", "\\[")
+            .Replace("`", "\\`");
+    }
+}
+