From 583b0d034e4f0eb413f8bd4c39051da3eb44344f Mon Sep 17 00:00:00 2001
From: orfelorfel23 <jannik.mueller.jannik+git@googlemail.com>
Date: Sun, 5 Jul 2026 11:01:38 +0200
Subject: [PATCH] Add digital-only mode by allowing empty printer IP

---
 src/screens/AdminScreen.tsx   | 10 ++++------
 src/screens/PreviewScreen.tsx | 24 +++++++++++++-----------
 src/services/printer.ts       |  5 +++--
 3 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/src/screens/AdminScreen.tsx b/src/screens/AdminScreen.tsx
index 79709b04..07810ff6 100644
--- a/src/screens/AdminScreen.tsx
+++ b/src/screens/AdminScreen.tsx
@@ -213,12 +213,10 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
 
     const ipTrimmed = printerIp.trim();
     const ipRegex = /^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/;
-    if (!ipTrimmed) {
-      Alert.alert('Ungültige Eingabe', 'Die Drucker-IP-Adresse darf nicht leer sein.');
-      return;
-    }
-    if (!ipRegex.test(ipTrimmed)) {
-      Alert.alert('Ungültige Eingabe', 'Bitte gib eine gültige IP-Adresse ein (z.B. 192.168.1.100).');
+    
+    // IP may be empty to enable digital-only mode
+    if (ipTrimmed !== '' && !ipRegex.test(ipTrimmed)) {
+      Alert.alert('Ungültige Eingabe', 'Bitte gib eine gültige IP-Adresse ein oder lass das Feld leer (für rein digitalen Modus).');
       return;
     }
 
diff --git a/src/screens/PreviewScreen.tsx b/src/screens/PreviewScreen.tsx
index 13be1db5..7c7b4875 100644
--- a/src/screens/PreviewScreen.tsx
+++ b/src/screens/PreviewScreen.tsx
@@ -635,17 +635,19 @@ export default function PreviewScreen({
 
         {/* Action Buttons */}
         <View style={styles.actions}>
-          <TouchableOpacity style={[styles.actionBtn, styles.printBtn, isProcessing && styles.btnDisabled, isSmallDevice && { marginBottom: THEME.spacing.sm }]} onPress={handlePrint} activeOpacity={0.8} disabled={isProcessing}>
-            <LinearGradient
-              colors={THEME.gradient.primary}
-              start={{ x: 0, y: 0.5 }}
-              end={{ x: 1, y: 0.5 }}
-              style={[styles.printGradient, isSmallDevice && { paddingVertical: THEME.spacing.sm }]}
-            >
-              <FontAwesomeIcon icon={faPrint} size={18} color={THEME.colors.text} style={{ marginRight: 8 }} />
-              <Text style={styles.actionBtnText}>JETZT DRUCKEN</Text>
-            </LinearGradient>
-          </TouchableOpacity>
+          {!!printerIp?.trim() && (
+            <TouchableOpacity style={[styles.actionBtn, styles.printBtn, isProcessing && styles.btnDisabled, isSmallDevice && { marginBottom: THEME.spacing.sm }]} onPress={handlePrint} activeOpacity={0.8} disabled={isProcessing}>
+              <LinearGradient
+                colors={THEME.gradient.primary}
+                start={{ x: 0, y: 0.5 }}
+                end={{ x: 1, y: 0.5 }}
+                style={[styles.printGradient, isSmallDevice && { paddingVertical: THEME.spacing.sm }]}
+              >
+                <FontAwesomeIcon icon={faPrint} size={18} color={THEME.colors.text} style={{ marginRight: 8 }} />
+                <Text style={styles.actionBtnText}>JETZT DRUCKEN</Text>
+              </LinearGradient>
+            </TouchableOpacity>
+          )}
 
 
 
diff --git a/src/services/printer.ts b/src/services/printer.ts
index 1473a82f..d474a918 100644
--- a/src/services/printer.ts
+++ b/src/services/printer.ts
@@ -18,8 +18,9 @@ export interface PrintOptions {
 export async function printImageLocal(imageUri: string, options: PrintOptions): Promise<void> {
   const { ipAddress, jobName = 'Schnappix Photo', username = 'Schnappix Kiosk' } = options;
 
-  if (!ipAddress) {
-    throw new Error('Drucker-IP-Adresse ist erforderlich.');
+  if (!ipAddress || ipAddress.trim() === '') {
+    console.log('Drucken übersprungen: Keine Drucker-IP-Adresse hinterlegt (Digitaler Modus).');
+    return;
   }
 
   // 1. Read the image file from local storage as Base64 and convert to binary Buffer