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media-worker/Services/ApiNotificationService.cs

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+using System.Text;
+using System.Text.Json;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using SaasMediaWorker.Configuration;
+
+namespace SaasMediaWorker.Services;
+
+/// <summary>
+/// NestJS Core API'ye bildirim gönderen HttpClient servisi.
+/// Worker işlem tamamlandığında veya hata oluştuğunda API'yi bilgilendirir.
+/// </summary>
+public class ApiNotificationService
+{
+    private readonly HttpClient _httpClient;
+    private readonly ILogger<ApiNotificationService> _logger;
+    private readonly ApiSettings _settings;
+
+    public ApiNotificationService(
+        HttpClient httpClient,
+        ILogger<ApiNotificationService> logger,
+        IOptions<ApiSettings> settings)
+    {
+        _httpClient = httpClient;
+        _logger = logger;
+        _settings = settings.Value;
+
+        _httpClient.BaseAddress = new Uri(_settings.CoreApiBaseUrl);
+        _httpClient.Timeout = TimeSpan.FromSeconds(30);
+    }
+
+    /// <summary>
+    /// Render tamamlandığında NestJS API'sine bildirim gönderir.
+    /// </summary>
+    public async Task NotifyCompletionAsync(
+        string projectId,
+        string renderJobId,
+        string finalVideoUrl,
+        long processingTimeMs)
+    {
+        var payload = new
+        {
+            projectId,
+            renderJobId,
+            status = "COMPLETED",
+            finalVideoUrl,
+            processingTimeMs,
+            workerHostname = Environment.MachineName,
+            completedAt = DateTime.UtcNow.ToString("O")
+        };
+
+        await SendNotification("/internal/worker/callback", payload);
+
+        _logger.LogInformation(
+            "✅ API'ye tamamlanma bildirimi gönderildi — Project: {ProjectId}",
+            projectId);
+    }
+
+    /// <summary>
+    /// Render başarısız olduğunda NestJS API'sine hata bildirimi gönderir.
+    /// </summary>
+    public async Task NotifyFailureAsync(
+        string projectId,
+        string renderJobId,
+        string errorMessage,
+        int attemptNumber)
+    {
+        var payload = new
+        {
+            projectId,
+            renderJobId,
+            status = "FAILED",
+            errorMessage,
+            attemptNumber,
+            workerHostname = Environment.MachineName,
+            failedAt = DateTime.UtcNow.ToString("O")
+        };
+
+        await SendNotification("/internal/worker/callback", payload);
+
+        _logger.LogWarning(
+            "API'ye hata bildirimi gönderildi — Project: {ProjectId}, Hata: {Error}",
+            projectId, errorMessage);
+    }
+
+    private async Task SendNotification(string endpoint, object payload)
+    {
+        try
+        {
+            var content = new StringContent(
+                JsonSerializer.Serialize(payload),
+                Encoding.UTF8,
+                "application/json");
+
+            var response = await _httpClient.PostAsync(endpoint, content);
+
+            if (!response.IsSuccessStatusCode)
+            {
+                _logger.LogWarning(
+                    "API bildirim yanıtı başarısız: {StatusCode}",
+                    response.StatusCode);
+            }
+        }
+        catch (Exception ex)
+        {
+            // Bildirim hatası render sonucunu etkilememeli
+            _logger.LogWarning(ex, "API bildirim gönderilemedi — endpoint: {Endpoint}", endpoint);
+        }
+    }
+}