Fix: Long running tasks cause crash if notification channel is not created.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "minibits_wallet",
-  "version": "0.2.0-beta.7",
+  "version": "0.2.0-beta.8",
   "private": true,
   "scripts": {
     "android:clean": "cd android && ./gradlew clean",

src/services/wallet/sendTask.ts

@@ -40,7 +40,11 @@ export const sendTask = async function (
     const mintUrl = mintBalanceToSendFrom.mintUrl
 
     log.trace('[sendTask]', 'mintBalanceToSendFrom', mintBalanceToSendFrom)
-    log.trace('[sendTask]', 'amountToSend', {amountToSend, unit})    
+    log.trace('[sendTask]', 'amountToSend', {amountToSend, unit}) 
+    
+    if(amountToSend <= 0) {
+        throw new AppError(Err.VALIDATION_ERROR, 'Amount to send must be above zero.')
+    }
 
     // create draft transaction
     const transactionData: TransactionData[] = [

src/services/walletService.ts

@@ -420,6 +420,11 @@ const swapAllTask = async function (): Promise<WalletTaskResult> {
 
         for (const unit of mint.units) {
             const proofsToOptimize = proofsStore.getByMint(mint.mintUrl, { isPending: false, unit, ascending: true })
+
+            if(proofsToOptimize.length === 0) {
+                continue
+            }
+
             initialProofsCount += proofsToOptimize.length            
             const mintBalance = mint.balances
 
@@ -459,7 +464,8 @@ const swapAllTask = async function (): Promise<WalletTaskResult> {
                 }
             } else {
                 // If the length is less than or equal to limit, run with all proofs.
-                const proofsAmount = CashuUtils.getProofsAmount(proofsToOptimize)         
+                const proofsAmount = CashuUtils.getProofsAmount(proofsToOptimize)
+                
                 const sendResult = await sendTask(
                     mintBalance!,
                     proofsAmount,