added from stores

internal/diyhrt/filter.go

@@ -45,3 +45,49 @@ func (f StoreFilter) Filter (stores []Store) []Store {
 
     return  result
 }
+
+type ListingFilter struct{
+    Limit int
+
+    IncludeIds []int
+    ExcludeIds []int
+
+    FromStores []int
+}
+
+
+func (f ListingFilter) Filter (listings []Listing) []Listing {
+    result := make([]Listing, 0)
+
+    if len(f.IncludeIds) > 0 {
+        for _, l := range listings {
+            if f.Limit > 0 && len(result) >= f.Limit {
+                break
+            }
+
+            if slices.Contains(f.IncludeIds, l.Id) {
+                result = append(result, l)
+            }
+        }
+    }
+
+
+    for _, l := range listings {
+        if f.Limit > 0 && len(result) >= f.Limit {
+            break
+        }
+
+
+        if slices.Contains(f.ExcludeIds, l.Id) || slices.Contains(f.IncludeIds, l.Id) {
+            continue
+        }
+
+        if len(f.FromStores) > 0 && !slices.Contains(f.FromStores, l.Store.Id) {
+            continue
+        }
+
+        result = append(result, l)
+    }
+
+    return  result
+}