feat: add UI funding source retries (#3407)

lnbits/core/templates/admin/_tab_funding.html

@@ -106,6 +106,28 @@
           :form-data="formData"
           :allowed-funding-sources="settings.lnbits_allowed_funding_sources"
         />
+        <div class="row q-col-gutter-md q-my-md">
+          <div class="col-12 col-sm-8">
+            <q-item tag="div">
+              <q-item-section>
+                <q-item-label
+                  v-text="$t('funding_source_retries')"
+                ></q-item-label>
+                <q-item-label
+                  caption
+                  v-text="$t('funding_source_retries_desc')"
+                ></q-item-label>
+              </q-item-section>
+              <q-item-section>
+                <q-input
+                  filled
+                  v-model="formData.funding_source_max_retries"
+                  type="number"
+                />
+              </q-item-section>
+            </q-item>
+          </div>
+        </div>
       </div>
       <q-separator></q-separator>
       <h6 class="q-mt-lg q-mb-sm">

lnbits/settings.py

@@ -664,10 +664,10 @@ class FundingSourcesSettings(
     # How long to wait for the payment to be confirmed before returning a pending status
     # It will not fail the payment, it will make it return pending after the timeout
     lnbits_funding_source_pay_invoice_wait_seconds: int = Field(default=5, ge=0)
+    funding_source_max_retries: int = Field(default=4, ge=0)
 
 
 class FiatProvidersSettings(StripeFiatProvider):
-
     def is_fiat_provider_enabled(self, provider: str | None) -> bool:
         """
         Checks if a specific fiat provider is enabled.

lnbits/static/i18n/en.js

@@ -667,5 +667,8 @@ window.localisation.en = {
   connected: 'Connected',
   not_connected: 'Not Connected',
   free: 'Free',
-  paid: 'Paid'
+  paid: 'Paid',
+  funding_source_retries: 'Max Retries',
+  funding_source_retries_desc:
+    'Maximum number of retries for funding sources, before it falls back to VoidWallet.'
 }