feat: v2 rewrite — hexagonal arch, ActivityPub federation, NATS, deployment-ready (#1)

crates/domain/src/events.rs

@@ -0,0 +1,86 @@
+use crate::value_objects::{BoostId, LikeId, ThoughtId, UserId};
+
+#[derive(Debug, Clone)]
+pub enum DomainEvent {
+    ThoughtCreated {
+        thought_id: ThoughtId,
+        user_id: UserId,
+        in_reply_to_id: Option<ThoughtId>,
+    },
+    ThoughtDeleted {
+        thought_id: ThoughtId,
+        user_id: UserId,
+    },
+    ThoughtUpdated {
+        thought_id: ThoughtId,
+        user_id: UserId,
+    },
+    LikeAdded {
+        like_id: LikeId,
+        user_id: UserId,
+        thought_id: ThoughtId,
+    },
+    LikeRemoved {
+        user_id: UserId,
+        thought_id: ThoughtId,
+    },
+    BoostAdded {
+        boost_id: BoostId,
+        user_id: UserId,
+        thought_id: ThoughtId,
+    },
+    BoostRemoved {
+        user_id: UserId,
+        thought_id: ThoughtId,
+    },
+    FollowRequested {
+        follower_id: UserId,
+        following_id: UserId,
+    },
+    FollowAccepted {
+        follower_id: UserId,
+        following_id: UserId,
+    },
+    FollowRejected {
+        follower_id: UserId,
+        following_id: UserId,
+    },
+    Unfollowed {
+        follower_id: UserId,
+        following_id: UserId,
+    },
+    UserBlocked {
+        blocker_id: UserId,
+        blocked_id: UserId,
+    },
+    UserUnblocked {
+        blocker_id: UserId,
+        blocked_id: UserId,
+    },
+    UserRegistered {
+        user_id: UserId,
+    },
+    ProfileUpdated {
+        user_id: UserId,
+    },
+    MentionReceived {
+        thought_id: ThoughtId,
+        mentioned_user_id: UserId,
+        author_user_id: UserId,
+    },
+}
+
+pub struct EventEnvelope {
+    pub event: DomainEvent,
+    pub delivery_count: u64,
+    pub ack: Box<dyn Fn() + Send + Sync>,
+    pub nack: Box<dyn Fn() + Send + Sync>,
+}
+impl std::fmt::Debug for EventEnvelope {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("EventEnvelope")
+            .field("event", &self.event)
+            .field("delivery_count", &self.delivery_count)
+            .finish()
+    }
+}