feat: consume transactional email notifications

Add contract validation, SMTP delivery results, terminal failure context, neutral development seeding, and local Docker setup. Ref: IT-1033
2026-08-04 12:32:28 +03:00
parent b8435ac07b
commit 2757869176
37 changed files with 1465 additions and 122 deletions
@@ -18,11 +18,15 @@ internal sealed class EmailTemplateService : IEmailTemplateService
        string? languageCode,
        CancellationToken cancellationToken)
    {
-        var lang = string.IsNullOrWhiteSpace(languageCode) ? "en" : languageCode;
-        var template = await _templateRepository.GetAsync(serviceName, templateKey, lang, cancellationToken);
+        if (string.IsNullOrWhiteSpace(languageCode))
+            throw new InvalidDataException("LanguageCode is required.");

-        if (template is null && lang != "en")
-            template = await _templateRepository.GetAsync(serviceName, templateKey, "en", cancellationToken);
+        string lang = languageCode.Trim().ToLowerInvariant();
+        EmailTemplate? template = await _templateRepository.GetAsync(
+            serviceName,
+            templateKey,
+            lang,
+            cancellationToken);

        return template
            ?? throw new InvalidOperationException(