feat(backend): add problem/need submission module with workflow and events

Add submission CRUD with pagination and role scoping, challenge/location binding, automatic keyword extraction, a validated status workflow, and domain events for matchmaking and notifications. Create a problem record together with each submission.
2026-10-04 02:22:00 +02:00
parent 58cc2e4096
commit cadc321d96
12 changed files with 633 additions and 0 deletions
@@ -0,0 +1,26 @@
+using TarninaHub.Domain.Enums;
+
+namespace TarninaHub.Domain.Rules;
+
+public static class SubmissionWorkflow
+{
+    private static readonly IReadOnlyDictionary<SubmissionStatus, SubmissionStatus[]> Transitions =
+        new Dictionary<SubmissionStatus, SubmissionStatus[]>
+        {
+            [SubmissionStatus.New] = [SubmissionStatus.Triaged, SubmissionStatus.Rejected],
+            [SubmissionStatus.Triaged] = [SubmissionStatus.Matched, SubmissionStatus.Rejected, SubmissionStatus.Closed],
+            [SubmissionStatus.Matched] = [SubmissionStatus.InProgress, SubmissionStatus.Closed, SubmissionStatus.Rejected],
+            [SubmissionStatus.InProgress] = [SubmissionStatus.Closed, SubmissionStatus.Rejected],
+            [SubmissionStatus.Closed] = [],
+            [SubmissionStatus.Rejected] = [],
+        };
+
+    public static bool CanTransition(SubmissionStatus from, SubmissionStatus to) =>
+        from == to || Transitions[from].Contains(to);
+
+    public static IReadOnlyList<SubmissionStatus> NextStates(SubmissionStatus from) =>
+        Transitions[from];
+
+    public static bool IsTerminal(SubmissionStatus status) =>
+        Transitions[status].Length == 0;
+}