From a5ef8aef0f7e6051578fc8138ec7dc627808aa40 Mon Sep 17 00:00:00 2001
From: Miroslav Prasil <miroslav@prasil.info>
Date: Tue, 21 Aug 2018 12:20:55 +0100
Subject: [PATCH] Update affected users revision when there are collection
 changes

---
 src/db/models/collection.rs | 12 ++++++++++++
 src/db/models/user.rs       |  8 ++++++++
 2 files changed, 20 insertions(+)

diff --git a/src/db/models/collection.rs b/src/db/models/collection.rs
index fa16ec2..2bf116c 100644
--- a/src/db/models/collection.rs
+++ b/src/db/models/collection.rs
@@ -185,6 +185,8 @@ impl CollectionUser {
     }
 
     pub fn save(user_uuid: &str, collection_uuid: &str, read_only:bool, conn: &DbConn) -> QueryResult<()> {
+        User::update_uuid_revision(&user_uuid, conn);
+
         diesel::replace_into(users_collections::table)
         .values((
             users_collections::user_uuid.eq(user_uuid),
@@ -194,6 +196,8 @@ impl CollectionUser {
     }
 
     pub fn delete(self, conn: &DbConn) -> QueryResult<()> {
+        User::update_uuid_revision(&self.user_uuid, conn);
+
         diesel::delete(users_collections::table
         .filter(users_collections::user_uuid.eq(&self.user_uuid))
         .filter(users_collections::collection_uuid.eq(&self.collection_uuid)))
@@ -216,12 +220,20 @@ impl CollectionUser {
     }
 
     pub fn delete_all_by_collection(collection_uuid: &str, conn: &DbConn) -> QueryResult<()> {
+        CollectionUser::find_by_collection(&collection_uuid, conn)
+        .iter()
+        .for_each(|collection| {
+            User::update_uuid_revision(&collection.user_uuid, conn)
+        });
+
         diesel::delete(users_collections::table
             .filter(users_collections::collection_uuid.eq(collection_uuid))
         ).execute(&**conn).and(Ok(()))
     }
 
     pub fn delete_all_by_user(user_uuid: &str, conn: &DbConn) -> QueryResult<()> {
+        User::update_uuid_revision(&user_uuid, conn);
+
         diesel::delete(users_collections::table
             .filter(users_collections::user_uuid.eq(user_uuid))
         ).execute(&**conn).and(Ok(()))
diff --git a/src/db/models/user.rs b/src/db/models/user.rs
index 9378824..dff34d5 100644
--- a/src/db/models/user.rs
+++ b/src/db/models/user.rs
@@ -154,6 +154,14 @@ impl User {
         }
     }
 
+    pub fn update_uuid_revision(uuid: &str, conn: &DbConn) {
+        if let Some(mut user) = User::find_by_uuid(&uuid, conn) {
+            if user.update_revision(conn).is_err(){
+                println!("Warning: Failed to update revision for {}", user.email);
+            };
+        };
+    }
+
     pub fn update_revision(&mut self, conn: &DbConn) -> QueryResult<()> {
         diesel::update(
             users::table.filter(