initial commit

Infrastructure/Email/SendGrid/SendGridEmailSender.cs

@@ -0,0 +1,58 @@
+using Microsoft.Extensions.Options;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Text.Json;
+
+namespace Indotalent.Infrastructure.Email.SendGrid;
+
+public class SendGridEmailSender : IEmailSender
+{
+    private readonly SendGridSettingsModel _settings;
+    private readonly HttpClient _httpClient;
+
+    public SendGridEmailSender(IOptions<EmailSettingsModel> emailOptions, HttpClient httpClient)
+    {
+        _settings = emailOptions.Value.SendGrid;
+        _httpClient = httpClient;
+    }
+
+    public async Task SendEmailAsync(string email, string subject, string htmlMessage)
+    {
+        if (string.IsNullOrEmpty(_settings.ApiKey))
+        {
+            throw new Exception("SendGrid configuration is missing ApiKey.");
+        }
+
+        _httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", _settings.ApiKey);
+
+        var payload = new
+        {
+            personalizations = new[]
+            {
+                new
+                {
+                    to = new[] { new { email = email } }
+                }
+            },
+            from = new { email = _settings.FromEmail, name = "SendGrid System" },
+            subject = subject,
+            content = new[]
+            {
+                new
+                {
+                    type = "text/html",
+                    value = htmlMessage
+                }
+            }
+        };
+
+        var content = new StringContent(JsonSerializer.Serialize(payload), Encoding.UTF8, "application/json");
+        var response = await _httpClient.PostAsync("https://api.sendgrid.com/v3/mail/send", content);
+
+        if (!response.IsSuccessStatusCode)
+        {
+            var errorBody = await response.Content.ReadAsStringAsync();
+            throw new Exception($"Failed to send email via SendGrid. Status: {response.StatusCode}, Error: {errorBody}");
+        }
+    }
+}