regroup etc ...

mobile/hooks/useBatchStore.ts

@@ -0,0 +1,59 @@
+import { useCallback } from 'react';
+import { createMMKV, useMMKVObject } from 'react-native-mmkv';
+import { Batch } from '../types';
+
+const storage = createMMKV({ id: 'vaultdrop-batches' });
+
+export function useBatchStore() {
+  const [batchIds, setBatchIds] = useMMKVObject<string[]>('batch-ids', storage);
+
+  const saveBatch = useCallback((batch: Batch) => {
+    storage.set(`batch_${batch.id}`, JSON.stringify(batch));
+    const current = batchIds ?? [];
+    if (!current.includes(batch.id)) {
+      setBatchIds([batch.id, ...current]);
+    }
+  }, [batchIds, setBatchIds]);
+
+  const getBatch = useCallback((id: string): Batch | undefined => {
+    const raw = storage.getString(`batch_${id}`);
+    if (!raw) return undefined;
+    return JSON.parse(raw) as Batch;
+  }, []);
+
+  const getAllBatches = useCallback((): Batch[] => {
+    return (batchIds ?? [])
+      .map((id) => getBatch(id))
+      .filter((b): b is Batch => b !== undefined);
+  }, [batchIds, getBatch]);
+
+  const addTagToBatch = useCallback((batchId: string, tag: string) => {
+    const batch = getBatch(batchId);
+    if (!batch) return;
+    if (batch.tags.includes(tag)) return;
+    batch.tags = [...batch.tags, tag];
+    storage.set(`batch_${batchId}`, JSON.stringify(batch));
+  }, [getBatch]);
+
+  const removeTagFromBatch = useCallback((batchId: string, tag: string) => {
+    const batch = getBatch(batchId);
+    if (!batch) return;
+    batch.tags = batch.tags.filter((t) => t !== tag);
+    storage.set(`batch_${batchId}`, JSON.stringify(batch));
+  }, [getBatch]);
+
+  const deleteBatch = useCallback((batchId: string) => {
+    storage.set(`batch_${batchId}`, undefined as any);
+    storage.remove(`batch_${batchId}` as any);
+    setBatchIds((batchIds ?? []).filter((id) => id !== batchId));
+  }, [batchIds, setBatchIds]);
+
+  return {
+    saveBatch,
+    getBatch,
+    getAllBatches,
+    addTagToBatch,
+    removeTagFromBatch,
+    deleteBatch,
+  };
+}