Update: Add EUR currency support for Slovak companies

- Modified get_cz_qr_code_base64() to support both CZK and EUR
- Updated cz_to_iban() to better handle international IBANs (SK, etc.)
- SPAYD QR now uses actual invoice currency in CC: field
- Updated manifest description to reflect EUR support
- Updated README with setup instructions for Slovak companies

This allows Slovak companies with EUR accounts to generate SPAYD QR codes
for Czech customers, enabling cross-border EUR payments via mobile banking.

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

README.md

@@ -1,24 +1,81 @@
 🇨🇿 [Česká verze](README.cs.md)
 
-# Czech QR Payments
+# Czech QR Payments (SPAYD)
 
-This module adds QR codes to invoices for quick mobile payments. The codes are in SPAYD format, compatible with all major Czech banking apps.
+This module adds **SPAYD format QR codes** to invoices for quick mobile payments via Czech banking apps. Compatible with all major Czech banks (ČSOB, Komerční banka, Česká spořitelna, Raiffeisenbank, etc.).
 
-* **Bank account format:** Enter Czech bank accounts in the standard Odoo field using the Czech format, e.g., `123-456/0800`
+## ✅ Supported Features
+
+* **Bank account formats:**
+  - Czech local format: `123-456/0800` (automatically converted to IBAN)
+  - IBAN format: `CZ6508000000001234567890`, `SK6509000000005123456789`, etc.
   ![Bank Account Entry](static/description/bank_account_en.png)
 
-* **Foreign accounts:** For foreign accounts, you can enter IBAN in the same field (standard Odoo field).
+* **Currency support:**
-* **Currency support:** Czech QR codes are generated for invoices in CZK currency. For foreign payments, the original Odoo QR code is preserved.
+  - ✅ **CZK** - Standard Czech payments
+  - ✅ **EUR** - Cross-border payments (for Slovak companies invoicing Czech customers)
+  - ❌ Other currencies - Not supported (SPAYD is primarily for CZK and EUR)
+
+* **Use cases:**
+  - Czech company invoicing Czech customers in CZK
+  - **Slovak company invoicing Czech customers in EUR** (your use case!)
+  - Any company with a CZ/SK/EU IBAN invoicing Czech customers
+
+## ⚡ Quick Setup for Slovak Companies
+
+If you are a **Slovak company** invoicing **Czech customers in EUR**:
+
+1. **Set up your EUR bank account:**
+   - Go to **Accounting → Configuration → Journals**
+   - Select your bank journal
+   - In the **Bank Account** field, enter your **EUR IBAN** (e.g., `SK6509000000005123456789`)
+   - Set **Currency** to **EUR**
+
+2. **Create invoice for Czech customer:**
+   - Set customer country to **Czech Republic (CZ)**
+   - Set invoice currency to **EUR**
+   - Confirm the invoice (post it)
+
+3. **QR code generates automatically!**
+   - The QR code will be in **SPAYD format** with `CC:EUR`
+   - Czech customers can scan it with their banking app
+   - Payment will be processed in EUR to your account
 
 ## Frequently Asked Questions (FAQ)
 
-**The QR code is not generated on the invoice**
+**Q: The QR code is not generated on the invoice**
-Make sure you have the **QR Codes** option enabled in the **Invoicing** app configuration.
+A: Make sure you have:
+- The **QR Codes** option enabled in the **Invoicing** app configuration
+- A bank account set up for your company with the **same currency as the invoice** (EUR or CZK)
+- The invoice is **confirmed/posted**
 ![QR Code Settings](static/description/qr_payment_settings_en.png)
 
 
-**The QR code is generated on the invoice, but scanning it results in an error**
+**Q: The QR code is generated on the invoice, but scanning it results in an error**
-Check whether a bank account for the Czech currency is set up for the main company. See "Bank account format" section above.
+A: Check whether:
+- A bank account for the **invoice currency** (EUR or CZK) is set up for the company
+- The bank account number is in **valid format** (Czech format `123-456/0800` or IBAN)
+- The customer's banking app supports **SPAYD QR codes**
+
+
+**Q: Can I use EUR currency with this module?**
+A: ✅ **Yes!** This module now supports both **CZK and EUR** currencies. Perfect for Slovak companies invoicing Czech customers in EUR.
+
+
+**Q: Does this work with Slovak (SK) IBAN?**
+A: ✅ **Yes!** The module handles any valid IBAN (SK, CZ, DE, AT, etc.). If your bank account is already an IBAN, it will be used as-is.
+
+
+**Q: Can I use this for invoices in other currencies (USD, GBP)?**
+A: ❌ **No.** The SPAYD standard is designed for CZK and EUR. Other currencies are not supported by Czech banking apps via QR codes.
+
+
+**Q: I'm a Slovak company. Will Czech customers be able to pay EUR invoices via QR code?**
+A: ✅ **Yes**, if:
+- Your bank account is a **EUR account** (Slovak or international)
+- The invoice currency is **EUR**
+- The Czech customer's bank supports **cross-border EUR payments** (most do)
+- The QR code will contain `CC:EUR` and your SK/EUR IBAN
 ---
 
 ## About

__manifest__.py

@@ -4,18 +4,35 @@
     'depends': ['account', 'base', 'l10n_cz'],
     'countries': ['cz'],
     'category': 'Accounting',
-    'summary': 'Add Czech standard QR codes for payment to your invoices.',
+    'summary': 'Add Czech standard QR codes (SPAYD) for payment to your invoices.',
     'description': """
 
-Czech QR Payment Generator
+Czech QR Payment Generator (SPAYD)
-==========================
+===================================
-Allow to generate czech banks compliant QR code for payment on the invoice, if the invoice currency is "CZK"
+Allow to generate Czech banks compliant QR code for payment on the invoice.
+
+Supports:
+---------
+* **CZK currency** - Standard Czech payments
+* **EUR currency** - For Slovak companies and international businesses invoicing Czech customers
 
 Key Features:
 -------------
-* **Standard SPAYD Support:** Fully compatible with all major Czech banking apps.
+* **Standard SPAYD Support:** Fully compatible with all major Czech banking apps (ČSOB, Komerční banka, Česká spořitelna, etc.)
 * **Smart IBAN Conversion:** Automatically converts local account numbers (e.g. 123-456/0800) to IBAN format.
+* **Multi-country IBAN Support:** Works with Czech (CZ), Slovak (SK), and other SEPA IBANs.
 * **Integration:** Works with standard Odoo invoice templates.
+* **Currency Support:** CZK and EUR (for cross-border payments).
+
+Usage for Slovak Companies:
+---------------------------
+If you are a Slovak company invoicing Czech customers in EUR:
+1. Set up your EUR bank account in Odoo
+2. Create invoice for Czech customer in EUR currency
+3. QR code will be automatically generated in SPAYD format
+4. Czech customer can scan and pay via their banking app
+
+Note: Czech banks will process EUR payments if the recipient has a EUR account.
     """,
     'author': 'Ash technology s.r.o.',
     'website': 'https://github.com/ash-technology/l10n_cz_extra',

models/account_move.py

@@ -9,10 +9,14 @@ class AccountMove(models.Model):
     def get_cz_qr_code_base64(self):
         """ Returns Base64 PNG image for the invoice PDF """
         self.ensure_one()
-        if self.currency_id.name != 'CZK':
+        
+        # Support both EUR and CZK currencies
+        # (for Slovak companies invoicing Czech customers in EUR)
+        allowed_currencies = ['CZK', 'EUR']
+        if self.currency_id.name not in allowed_currencies:
             return False
 
-        # Find bank: 1. Matching CZK, 2. No currency set (default)
+        # Find bank: 1. Matching currency, 2. No currency set (default)
         bank = self.company_id.partner_id.bank_ids.filtered(lambda b: b.currency_id == self.currency_id)[:1]
         if not bank:
             bank = self.company_id.partner_id.bank_ids.filtered(lambda b: not b.currency_id)[:1]
@@ -21,11 +25,13 @@ class AccountMove(models.Model):
             return False
 
         # Build SPAYD string
+        # Note: cz_to_iban handles both CZ format (123-456/0800) and IBAN format (SK..., CZ..., etc.)
         iban = self.cz_to_iban(bank.acc_number)
         amount = '%.2f' % self.amount_residual
         vs = ''.join(filter(str.isdigit, self.payment_reference or ''))[-10:]
+        currency = self.currency_id.name or 'EUR'
         
-        spayd = f"SPD*1.0*ACC:{iban}*AM:{amount}*CC:CZK*X-VS:{vs}"
+        spayd = f"SPD*1.0*ACC:{iban}*AM:{amount}*CC:{currency}*X-VS:{vs}"
 
         # Generate QR Image
         qr = qrcode.make(spayd)
@@ -35,23 +41,31 @@ class AccountMove(models.Model):
 
     def cz_to_iban(self, acc_number):
         """
-        Converts '123-456/0800' or '456/0800' to a valid CZ IBAN.
+        Converts Czech account number formats to IBAN.
+        
+        Supports:
+        - Czech local format: '123-456/0800' or '456/0800'
+        - IBAN format: 'CZ6508000000001234567890', 'SK6509000000005123456789', etc.
+        
+        Returns:
+            str: Valid IBAN (uppercase) or original input if conversion fails
         """
         if not acc_number:
             return ""
         
         # Clean the input
-        clean_acc = acc_number.replace(" ", "")
+        clean_acc = acc_number.replace(" ", "").upper()
         
-        # If already an IBAN, return it
+        # If already an IBAN (any country), return it
-        if clean_acc.upper().startswith('CZ'):
+        # IBAN format: 2-letter country code + 2-digit checksum + account number
-            return clean_acc.upper()
+        if len(clean_acc) >= 4 and clean_acc[:2].isalpha() and clean_acc[2:4].isdigit():
+            return clean_acc
     
         try:
             # Split into [prefix-main, bank_code]
             parts = clean_acc.split('/')
             if len(parts) != 2:
-                return clean_acc # Fallback
+                return clean_acc  # Fallback for non-CZ format
                 
             bank_code = parts[1]
             account_parts = parts[0].split('-')