improvement: ApnsSender 환경별 APNs 호스트 자동 분기 (#273)

Reviewed-on: https://git.ipstein.myds.me/SPMS/SPMS_API/pulls/274

SPMS.Infrastructure/Push/ApnsSender.cs

@@ -4,6 +4,7 @@ using System.Net.Http.Headers;
 using System.Security.Cryptography;
 using System.Text;
 using System.Text.Json;
+using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Microsoft.IdentityModel.Tokens;
 using SPMS.Application.DTOs.Push;
@@ -14,17 +15,21 @@ namespace SPMS.Infrastructure.Push;
 public class ApnsSender : IApnsSender
 {
     private const string ProductionHost = "https://api.push.apple.com";
+    private const string SandboxHost = "https://api.sandbox.push.apple.com";
     private const int MaxConcurrency = 50;
     private const int TokenRefreshMinutes = 50;
 
     private readonly HttpClient _httpClient;
     private readonly ILogger<ApnsSender> _logger;
+    private readonly string _apnsHost;
     private readonly ConcurrentDictionary<string, (string Token, DateTime ExpiresAt)> _tokenCache = new();
 
-    public ApnsSender(IHttpClientFactory httpClientFactory, ILogger<ApnsSender> logger)
+    public ApnsSender(IHttpClientFactory httpClientFactory, IHostEnvironment hostEnvironment, ILogger<ApnsSender> logger)
     {
         _httpClient = httpClientFactory.CreateClient("ApnsSender");
         _logger = logger;
+        _apnsHost = hostEnvironment.IsDevelopment() ? SandboxHost : ProductionHost;
+        _logger.LogInformation("APNs 환경: {Host}", _apnsHost);
     }
 
     public async Task<PushResultDto> SendAsync(
@@ -79,7 +84,7 @@ public class ApnsSender : IApnsSender
         string jwt, string bundleId, string deviceToken,
         string payload, CancellationToken cancellationToken)
     {
-        var url = $"{ProductionHost}/3/device/{deviceToken}";
+        var url = $"{_apnsHost}/3/device/{deviceToken}";
 
         using var request = new HttpRequestMessage(HttpMethod.Post, url)
         {