API change: deprecate Gravatar.

Include avatar information in user object.

src/routes/users/edit_user.rs

@@ -15,17 +15,35 @@ pub struct Data {
     #[serde(skip_serializing_if = "Option::is_none")]
     #[validate]
     profile: Option<UserProfile>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[validate(length(min = 1, max = 128))]
+    avatar: Option<String>,
 }
 
 #[patch("/<_ignore_id>", data = "<data>")]
-pub async fn req(user: User, data: Json<Data>, _ignore_id: String) -> Result<()> {
+pub async fn req(user: User, mut data: Json<Data>, _ignore_id: String) -> Result<()> {
+    if data.0.status.is_none() && data.0.profile.is_none() && data.0.avatar.is_none() {
+        return Ok(())
+    }
+
     data.validate()
         .map_err(|error| Error::FailedValidation { error })?;
 
+    let mut set = to_document(&data.0).map_err(|_| Error::DatabaseError { operation: "to_document", with: "data" })?;
+
+    let avatar = std::mem::replace(&mut data.0.avatar, None);
+    let attachment = if let Some(attachment_id) = avatar {
+        let attachment = File::find_and_use(&attachment_id, "avatars", "user", &user.id).await?;
+        set.insert("avatar", to_document(&attachment).map_err(|_| Error::DatabaseError { operation: "to_document", with: "attachment" })?);
+        Some(attachment)
+    } else {
+        None
+    };
+
     get_collection("users")
     .update_one(
         doc! { "_id": &user.id },
-        doc! { "$set": to_document(&data.0).map_err(|_| Error::DatabaseError { operation: "to_document", with: "data" })? },
+        doc! { "$set": set },
         None
     )
     .await
@@ -41,5 +59,15 @@ pub async fn req(user: User, data: Json<Data>, _ignore_id: String) -> Result<()>
         .ok();
     }
 
+    if let Some(avatar) = attachment {
+        ClientboundNotification::UserUpdate {
+            id: user.id.clone(),
+            data: json!({ "avatar": avatar }),
+        }
+        .publish(user.id.clone())
+        .await
+        .ok();
+    }
+
     Ok(())
 }