JMAP Registry API implementation - part 2

crates/types/src/blob.rs

@@ -222,6 +222,10 @@ impl BlobId {
             0
         }
     }
+
+    pub fn is_empty(&self) -> bool {
+        self.hash.is_empty()
+    }
 }
 
 impl serde::Serialize for BlobId {
@@ -233,6 +237,16 @@ impl serde::Serialize for BlobId {
     }
 }
 
+impl<'de> serde::Deserialize<'de> for BlobId {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: serde::Deserializer<'de>,
+    {
+        BlobId::from_str(<&str>::deserialize(deserializer)?)
+            .map_err(|_| serde::de::Error::custom("invalid BlobId"))
+    }
+}
+
 impl std::fmt::Display for BlobId {
     #[allow(clippy::unused_io_amount)]
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {