From 2a761b9d478ce6d51e0dbec3d3b80cd70f8eff8d Mon Sep 17 00:00:00 2001
From: Ilia Mashkov <hikkikomori7@gmail.com>
Date: Wed, 8 Apr 2026 09:54:27 +0300
Subject: [PATCH] =?UTF-8?q?feat(FontStore):=20implement=20lifecycle,=20par?=
 =?UTF-8?q?am=20management,=20async=20methods,=20shortcuts,=20pagination,?=
 =?UTF-8?q?=20category=20getters,=20singleton=20=E2=80=94=20all=20tests=20?=
 =?UTF-8?q?green?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../model/store/fontStore/fontStore.svelte.ts | 107 +++++++++++++-----
 1 file changed, 80 insertions(+), 27 deletions(-)

diff --git a/src/entities/Font/model/store/fontStore/fontStore.svelte.ts b/src/entities/Font/model/store/fontStore/fontStore.svelte.ts
index 9b10bf7..a48ef54 100644
--- a/src/entities/Font/model/store/fontStore/fontStore.svelte.ts
+++ b/src/entities/Font/model/store/fontStore/fontStore.svelte.ts
@@ -102,54 +102,105 @@ export class FontStore {
 
     // -- Lifecycle --
 
-    destroy(): void {}
+    destroy() {
+        this.#unsubscribe();
+        this.#observer.destroy();
+    }
 
     // -- Param management --
 
-    setParams(_updates: Partial<FontStoreParams>): void {}
-    invalidate(): void {}
+    setParams(updates: Partial<FontStoreParams>) {
+        this.#params = { ...this.#params, ...updates };
+        this.#observer.setOptions(this.buildOptions());
+    }
+    invalidate() {
+        this.#qc.invalidateQueries({ queryKey: this.buildQueryKey(this.#params) });
+    }
 
     // -- Async operations --
 
-    async refetch(): Promise<void> {}
-    async prefetch(_params: FontStoreParams): Promise<void> {}
-    cancel(): void {}
-    getCachedData(): UnifiedFont[] | undefined {
-        return undefined;
+    async refetch() {
+        this.#observer.setOptions(this.buildOptions());
+        await this.#observer.refetch();
+    }
+
+    async prefetch(params: FontStoreParams) {
+        await this.#qc.prefetchInfiniteQuery(this.buildOptions(params));
+    }
+
+    cancel() {
+        this.#qc.cancelQueries({ queryKey: this.buildQueryKey(this.#params) });
+    }
+
+    getCachedData(): UnifiedFont[] | undefined {
+        const data = this.#qc.getQueryData<InfiniteData<FontPage, PageParam>>(
+            this.buildQueryKey(this.#params),
+        );
+        if (!data) return undefined;
+        return data.pages.flatMap(p => p.fonts);
+    }
+
+    setQueryData(updater: (old: UnifiedFont[] | undefined) => UnifiedFont[]) {
+        this.#qc.setQueryData<InfiniteData<FontPage, PageParam>>(
+            this.buildQueryKey(this.#params),
+            old => {
+                const flatFonts = old?.pages.flatMap(p => p.fonts);
+                const newFonts = updater(flatFonts);
+                const template = old?.pages[0] ?? { total: newFonts.length, limit: newFonts.length, offset: 0 };
+                return {
+                    pages: [{ ...template, fonts: newFonts }],
+                    pageParams: [{ offset: 0 } as PageParam],
+                };
+            },
+        );
     }
-    setQueryData(_updater: (old: UnifiedFont[] | undefined) => UnifiedFont[]): void {}
 
     // -- Filter shortcuts --
 
-    setProviders(_v: ProxyFontsParams['providers']): void {}
-    setCategories(_v: ProxyFontsParams['categories']): void {}
-    setSubsets(_v: ProxyFontsParams['subsets']): void {}
-    setSearch(_v: string): void {}
-    setSort(_v: ProxyFontsParams['sort']): void {}
+    setProviders(v: ProxyFontsParams['providers']) {
+        this.setParams({ providers: v });
+    }
+    setCategories(v: ProxyFontsParams['categories']) {
+        this.setParams({ categories: v });
+    }
+    setSubsets(v: ProxyFontsParams['subsets']) {
+        this.setParams({ subsets: v });
+    }
+    setSearch(v: string) {
+        this.setParams({ q: v || undefined });
+    }
+    setSort(v: ProxyFontsParams['sort']) {
+        this.setParams({ sort: v });
+    }
 
     // -- Pagination navigation --
 
-    async nextPage(): Promise<void> {}
-    prevPage(): void {} // no-op: infinite scroll only loads forward
+    async nextPage(): Promise<void> {
+        await this.#observer.fetchNextPage();
+    }
+    prevPage(): void {} // no-op: infinite scroll accumulates forward only; method kept for API compatibility
     goToPage(_page: number): void {} // no-op
-    setLimit(_limit: number): void {}
+
+    setLimit(limit: number) {
+        this.setParams({ limit });
+    }
 
     // -- Category views --
 
-    get sansSerifFonts(): UnifiedFont[] {
-        return [];
+    get sansSerifFonts() {
+        return this.fonts.filter(f => f.category === 'sans-serif');
     }
-    get serifFonts(): UnifiedFont[] {
-        return [];
+    get serifFonts() {
+        return this.fonts.filter(f => f.category === 'serif');
     }
-    get displayFonts(): UnifiedFont[] {
-        return [];
+    get displayFonts() {
+        return this.fonts.filter(f => f.category === 'display');
     }
-    get handwritingFonts(): UnifiedFont[] {
-        return [];
+    get handwritingFonts() {
+        return this.fonts.filter(f => f.category === 'handwriting');
     }
-    get monospaceFonts(): UnifiedFont[] {
-        return [];
+    get monospaceFonts() {
+        return this.fonts.filter(f => f.category === 'monospace');
     }
 
     // -- Private helpers (TypeScript-private so tests can spy via `as any`) --
@@ -207,3 +258,5 @@ export class FontStore {
 export function createFontStore(params: FontStoreParams = {}): FontStore {
     return new FontStore(params);
 }
+
+export const fontStore = new FontStore({ limit: 50 });