✨ Magic spell for one time code

🗑️ Drop the usage of casbin
♻️ Refactor the permission service
♻️ Refactor the flow of creating an account
🧱 Email infra structure

DysonNetwork.Sphere/Account/EmailService.cs

@@ -0,0 +1,49 @@
+using MailKit.Net.Smtp;
+using MimeKit;
+
+namespace DysonNetwork.Sphere.Account;
+
+public class EmailServiceConfiguration
+{
+    public string Server { get; set; }
+    public int Port { get; set; }
+    public string Username { get; set; }
+    public string Password { get; set; }
+    public string FromAddress { get; set; }
+    public string FromName { get; set; }
+    public string SubjectPrefix { get; set; }
+}
+
+public class EmailService
+{
+    private readonly EmailServiceConfiguration _configuration;
+
+    public EmailService(IConfiguration configuration)
+    {
+        var cfg = configuration.GetValue<EmailServiceConfiguration>("Email");
+        _configuration = cfg ?? throw new ArgumentException("Email service was not configured.");
+    }
+
+    public async Task SendEmailAsync(string? recipientName, string recipientEmail, string subject, string textBody)
+    {
+        subject = $"[{_configuration.SubjectPrefix}] {subject}";
+        
+        var emailMessage = new MimeMessage();
+        emailMessage.From.Add(new MailboxAddress(_configuration.FromName, _configuration.FromAddress));
+        emailMessage.To.Add(new MailboxAddress(recipientName, recipientEmail));
+        emailMessage.Subject = subject;
+
+        var bodyBuilder = new BodyBuilder
+        {
+            TextBody = textBody
+        };
+
+        emailMessage.Body = bodyBuilder.ToMessageBody();
+
+        using var client = new SmtpClient();
+        await client.ConnectAsync(_configuration.Server, _configuration.Port, true);
+        await client.AuthenticateAsync(_configuration.Username, _configuration.Password);
+        await client.SendAsync(emailMessage);
+        await client.DisconnectAsync(true);
+    }
+}