chore: init project

2026-06-30 15:53:32 +02:00
commit f43ef5f945
94 changed files with 4405 additions and 0 deletions
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+using InboxIntel.Application.Abstractions;
+using InboxIntel.Domain.Enums;
+
+namespace InboxIntel.Infrastructure.Sync;
+
+/// <summary>
+/// Fast, dependency-free first-pass classifier applied during sync. The AI
+/// layer can later refine these labels, but this guarantees every email has a
+/// sensible category even when AI is disabled.
+/// </summary>
+public static class HeuristicClassifier
+{
+    private static readonly string[] FinanceHints = { "invoice", "receipt", "payment", "statement", "bank", "transaction", "billing" };
+    private static readonly string[] SocialHints = { "facebook", "twitter", "linkedin", "instagram", "tiktok" };
+    private static readonly string[] NoReplyHints = { "noreply", "no-reply", "donotreply", "newsletter", "mailer", "notifications" };
+
+    public static EmailCategory Classify(GmailMessageDetail d)
+    {
+        var subject = (d.Subject ?? string.Empty).ToLowerInvariant();
+        var from = d.FromAddress.ToLowerInvariant();
+
+        if (d.HasListUnsubscribe) return EmailCategory.Newsletter;
+        if (FinanceHints.Any(h => subject.Contains(h))) return EmailCategory.Finance;
+        if (SocialHints.Any(h => from.Contains(h))) return EmailCategory.Social;
+        if (NoReplyHints.Any(h => from.Contains(h))) return EmailCategory.Notification;
+        return EmailCategory.Personal;
+    }
+}