Allow likes to be deleted with AP

src/models/likes.rs

@@ -13,14 +13,16 @@ pub struct Like {
     pub id: i32,
     pub user_id: i32,
     pub post_id: i32,
-    pub creation_date: chrono::NaiveDateTime
+    pub creation_date: chrono::NaiveDateTime,
+    pub ap_url: String
 }
 
 #[derive(Insertable)]
 #[table_name = "likes"]
 pub struct NewLike {
     pub user_id: i32,
-    pub post_id: i32
+    pub post_id: i32,
+    pub ap_url: String
 }
 
 impl Like {
@@ -31,6 +33,14 @@ impl Like {
             .expect("Unable to insert new like")
     }
 
+    pub fn update_ap_url(&self, conn: &PgConnection) {
+        if self.ap_url.len() == 0 {
+            diesel::update(self)
+                .set(likes::ap_url.eq(self.compute_id(conn)))
+                .get_result::<Like>(conn).expect("Couldn't update AP URL");
+        }
+    }
+
      pub fn get(conn: &PgConnection, id: i32) -> Option<Like> {
         likes::table.filter(likes::id.eq(id))
             .limit(1)
@@ -39,6 +49,14 @@ impl Like {
             .into_iter().nth(0)
     }
 
+    pub fn find_by_ap_url(conn: &PgConnection, ap_url: String) -> Option<Like> {
+        likes::table.filter(likes::ap_url.eq(ap_url))
+            .limit(1)
+            .load::<Like>(conn)
+            .expect("Error loading like by AP URL")
+            .into_iter().nth(0)
+    }
+
     pub fn for_user_on_post(conn: &PgConnection, user: &User, post: &Post) -> Option<Like> {
         likes::table.filter(likes::post_id.eq(post.id))
             .filter(likes::user_id.eq(user.id))