4 files changed, 17 insertions, 6 deletions
diff --git a/src/channel/app.rs b/src/channel/app.rs
index dc9e584..e3b169c 100644
--- a/src/channel/app.rs
+++ b/src/channel/app.rs
@@ -48,14 +48,14 @@ impl<'a> Channels<'a> {
     // This function is careless with respect to time, and gets you the channel as
     // it exists in the specific moment when you call it.
     pub async fn get(&self, channel: &Id) -> Result<Channel, Error> {
-        let not_found = || Error::NotFound(channel.clone());
-        let deleted = || Error::Deleted(channel.clone());
+        let to_not_found = || Error::NotFound(channel.clone());
+        let to_deleted = || Error::Deleted(channel.clone());
 
         let mut tx = self.db.begin().await?;
-        let channel = tx.channels().by_id(channel).await.not_found(not_found)?;
+        let channel = tx.channels().by_id(channel).await.not_found(to_not_found)?;
         tx.commit().await?;
 
-        channel.as_snapshot().ok_or_else(deleted)
+        channel.as_snapshot().ok_or_else(to_deleted)
     }
 
     pub async fn delete(&self, channel: &Id, deleted_at: &DateTime) -> Result<(), DeleteError> {
diff --git a/src/channel/handlers/send/mod.rs b/src/channel/handlers/send/mod.rs
index aa241e2..bde39e5 100644
--- a/src/channel/handlers/send/mod.rs
+++ b/src/channel/handlers/send/mod.rs
@@ -54,7 +54,9 @@ impl IntoResponse for Error {
     fn into_response(self) -> response::Response {
         let Self(error) = self;
         match error {
-            SendError::ChannelNotFound(_) => NotFound(error).into_response(),
+            SendError::ChannelNotFound(_) | SendError::ChannelDeleted(_) => {
+                NotFound(error).into_response()
+            }
             SendError::Name(_) | SendError::Database(_) => Internal::from(error).into_response(),
         }
     }
diff --git a/src/channel/handlers/send/test.rs b/src/channel/handlers/send/test.rs
index d77e07d..70d45eb 100644
--- a/src/channel/handlers/send/test.rs
+++ b/src/channel/handlers/send/test.rs
@@ -125,6 +125,6 @@ async fn deleted_channel() {
 
     assert!(matches!(
         error,
-        SendError::ChannelNotFound(error_channel) if channel.id == error_channel
+        SendError::ChannelDeleted(error_channel) if channel.id == error_channel
     ));
 }
diff --git a/src/channel/history.rs b/src/channel/history.rs
index 7f18e45..85da5a5 100644
--- a/src/channel/history.rs
+++ b/src/channel/history.rs
@@ -27,6 +27,15 @@ impl History {
         self.channel.clone()
     }
 
+    pub fn as_of<S>(&self, sequence: S) -> Option<Channel>
+    where
+        S: Into<Sequence>,
+    {
+        self.events()
+            .filter(Sequence::up_to(sequence.into()))
+            .collect()
+    }
+
     // Snapshot of this channel as of all events recorded in this history.
     pub fn as_snapshot(&self) -> Option<Channel> {
         self.events().collect()