fixes sorting by difficulty

web/src/lib/components/trail/trail_filter_panel.svelte

@@ -51,9 +51,9 @@
     ];
 
     const difficultyItems: SelectItem[] = [
-        { text: $_("easy"), value: "easy" },
-        { text: $_("moderate"), value: "moderate" },
-        { text: $_("difficult"), value: "difficult" },
+        { text: $_("easy"), value: 0 },
+        { text: $_("moderate"), value: 1 },
+        { text: $_("difficult"), value: 2 },
     ];
 
     let searchDropdownItems: SearchItem[] = $state([]);

web/src/lib/models/trail.ts

@@ -111,7 +111,7 @@ interface TrailFilter {
     q: string,
     category: string[],
     tags: string[],
-    difficulty: ("easy" | "moderate" | "difficult")[]
+    difficulty: (0 | 1 | 2)[]
     author?: string;
     public?: boolean;
     shared?: boolean;
@@ -169,7 +169,7 @@ interface TrailSearchResult {
     elevation_gain: number;
     elevation_loss: number;
     duration: number;
-    difficulty: "easy" | "moderate" | "difficult";
+    difficulty: 0 | 1 | 2;
     category: string;
     completed: boolean;
     date: number;

web/src/lib/stores/trail_store.ts

@@ -457,7 +457,7 @@ export async function searchResultToTrailList(hits: Hits<TrailSearchResult>): Pr
             created: new Date(h.created * 1000).toISOString(),
             date: new Date(h.date * 1000).toISOString(),
             description: h.description,
-            difficulty: h.difficulty,
+            difficulty: h.difficulty == 0 ? "easy" : h.difficulty == 1 ? "moderate" : "difficult",
             distance: h.distance,
             duration: h.duration,
             elevation_gain: h.elevation_gain,

web/src/routes/map/+page.ts

@@ -11,7 +11,7 @@ export const load: ServerLoad = async ({ params, locals, fetch }) => {
         q: "",
         category: [],
         tags: [],
-        difficulty: ["easy", "moderate", "difficult"],
+        difficulty: [0, 1, 2],
         author: "",
         public: true,
         shared: true,

web/src/routes/profile/[handle]/trails/+page.ts

@@ -12,7 +12,7 @@ export const load: Load = async ({ params, fetch, parent }) => {
         q: "",
         category: [],
         tags: [],
-        difficulty: ["easy", "moderate", "difficult"],
+        difficulty: [0, 1, 2],
         author: actor.id,
         public: true,
         shared: true,

web/src/routes/trails/+page.svelte

@@ -25,7 +25,24 @@
     export const snapshot: Snapshot<TrailFilter> = {
         capture: () => filter,
         restore: (value) => {
-            filter = value;
+            const difficultyMap: Record<string, 0 | 1 | 2> = {
+                easy: 0,
+                moderate: 1,
+                difficult: 2,
+            };
+            // defensive copy
+            const migrated = { ...value };
+
+            if (Array.isArray(migrated.difficulty)) {
+                migrated.difficulty = migrated.difficulty.map((d: any) => {
+                    if (typeof d === "string" && d in difficultyMap) {
+                        return difficultyMap[d];
+                    }
+                    return d;
+                });
+            }
+
+            filter = migrated;
             handleFilterUpdate();
         },
     };

web/src/routes/trails/+page.ts

@@ -10,7 +10,7 @@ export const load: ServerLoad = async ({ params, locals, url, fetch }) => {
         q: "",
         category: [],
         tags: [],
-        difficulty: ["easy", "moderate", "difficult"],
+        difficulty: [0, 1, 2],
         author: "",
         public: true,
         shared: true,