Add option to remove duplicates. Fix #26

README.md

@@ -33,6 +33,7 @@ filter:
     - <filter>
 
 show_empty: <show_empty>
+unique: <unique>
 sort: <sort_method>
 ```
 
@@ -44,6 +45,7 @@ sort: <sort_method>
   - `include:` **Required.** A list of filters specifying which entities to add to the card
   - `exclude:` A list of filters specifying which entities to remove from the card
 - `show_empty:` Whether to display the card if it has no entities. Default: `true`.
+- `unique:` Whether to remove duplicate values after filtering and sorting. Default: `false`.
 - `sort:` How to sort the entities of the card. Default: `none`.
 
 ### Filters

src/main.js

@@ -76,6 +76,21 @@ class AutoEntities extends LitElement {
             entities = entities.sort(entity_sorter(this.hass, this._config.sort));
         }
 
+        if(this._config.unique) {
+            function compare(a,b) {
+                if(typeof(a) !== typeof(b)) return false;
+                if(typeof(a) !== "object") return a===b;
+                if(Object.keys(a).some((k) => !Object.keys(b).includes(k))) return false;
+
+                return Object.keys(a).every((k) => compare(a[k], b[k]));
+            }
+            let newEntities = [];
+            for(const e of entities) {
+                if(newEntities.some((i) => compare(i,e))) continue;
+                newEntities.push(e);
+            }
+            entities = newEntities;
+        }
         return entities;
     }