From 900bb5e845c3ad44defbd427cae3d44a4a43321f Mon Sep 17 00:00:00 2001
From: ivarlovlie <git@ivarlovlie.no>
Date: Sat, 25 Feb 2023 13:15:44 +0100
Subject: feat: Initial commit

---
 code/api/src/Services/EmailValidationService.cs | 67 +++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 code/api/src/Services/EmailValidationService.cs

(limited to 'code/api/src/Services/EmailValidationService.cs')

diff --git a/code/api/src/Services/EmailValidationService.cs b/code/api/src/Services/EmailValidationService.cs
new file mode 100644
index 0000000..5552c4f
--- /dev/null
+++ b/code/api/src/Services/EmailValidationService.cs
@@ -0,0 +1,67 @@
+namespace IOL.GreatOffice.Api.Services;
+
+public class EmailValidationService
+{
+    private readonly IStringLocalizer<SharedResources> _localizer;
+    private readonly MainAppDatabase _database;
+    private readonly MailService _mailService;
+    private readonly ILogger<EmailValidationService> _logger;
+    private readonly string EmailValidationUrl;
+
+    public EmailValidationService(IStringLocalizer<SharedResources> localizer, MainAppDatabase database, MailService mailService, ILogger<EmailValidationService> logger, VaultService vaultService) {
+        _localizer = localizer;
+        _database = database;
+        _mailService = mailService;
+        _logger = logger;
+        var configuration = vaultService.GetCurrentAppConfiguration();
+        EmailValidationUrl = configuration.CANONICAL_BACKEND_URL + "/_/validate";
+    }
+
+    public bool FulfillEmailValidationRequest(Guid id, Guid userId) {
+        var item = _database.ValidationEmails.FirstOrDefault(c => c.Id == id);
+        if (item == default) {
+            _logger.LogDebug("Did not find email validation request with id: {requestId}", id);
+            return false;
+        }
+
+        if (item.UserId != userId) {
+            _logger.LogInformation("An unknown user tried to validate the email validation request {requestId}", id);
+            return false;
+        }
+
+        var user = _database.Users.FirstOrDefault(c => c.Id == item.UserId);
+        if (user == default) {
+            _database.ValidationEmails.Remove(item);
+            _database.SaveChanges();
+            _logger.LogInformation("Deleting request {requestId} because user does not exist anymore", id);
+            return false;
+        }
+
+        user.EmailLastValidated = AppDateTime.UtcNow;
+        _database.ValidationEmails.Remove(item);
+        _database.Users.Update(user);
+        _database.SaveChanges();
+        _logger.LogInformation("Successfully validated the email for user {userId}", user.Id);
+        return true;
+    }
+
+    public async Task SendValidationEmailAsync(User user) {
+        var queueItem = new ValidationEmail() {
+            UserId = user.Id,
+            Id = Guid.NewGuid()
+        };
+        var email = new MailService.PostmarkEmail() {
+            To = user.Username,
+            Subject = _localizer["Greatoffice Email Validation"],
+            TextBody = _localizer["""
+Hello {0},
+
+Validate your email address by opening this link in a browser {1}
+""", user.DisplayName(true), EmailValidationUrl + "?id=" + queueItem.Id]
+        };
+        queueItem.EmailSentAt = AppDateTime.UtcNow;
+        _database.ValidationEmails.Add(queueItem);
+        await _database.SaveChangesAsync();
+        Task.Run(async () => await _mailService.SendMailAsync(email));
+    }
+}
\ No newline at end of file
-- 
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