#asknostr I signed up for #Bitrefill and I would like to send the account some funds from my CLN node. They offer me an lnurl (so the same thing used for zaps). How do I pay that using the lightning-cli (CLN)? I haven't figured out how to disable clnrest.py to actually use Zeus again - so the CLI is all I got. Thanks!
Discussion
I think you need to get a bolt11 invoice from the lnurl address or request. I have not personally dealt with this problem but this site looks promising. https://www.lnurlpay.com/
1. Decode the lnurl: The provided lnurl is usually encoded. Decode it to extract the actual URL for further details. In Python, you can use the bech32 library to decode it.
```
import bech32
hrp, data = bech32.decode(lnurl)
decoded_lnurl = bech32.convertbits(data, 5, 8, False)
```
2. Fetch lnurl Details: Perform an HTTP GET request to the decoded lnurl to obtain the invoice parameters.
```
import requests
response = requests.get(decoded_lnurl)
lnurl_data = response.json()
```
3. Construct Payment Parameters: Extract necessary parameters like callback URL, min amount, and max amount from lnurl_data.
```
callback_url = lnurl_data['callback']
min_amount = lnurl_data['min']
max_amount = lnurl_data['max']
```
4. Invoke lightning-cli to Prepare Invoice: Use the lightning-cli to generate an invoice on your node.
```
lightning-cli invoice [msatoshi] [label] [description]
```
5. Notify Service of Prepared Invoice: Typically, you need to notify the service that you have generated an invoice and are prepared to pay. This usually involves sending an HTTP GET or POST request to the callback_url.
```
callback_response = requests.get(f"{callback_url}?amount={min_amount}")
```
6. Perform the Payment: Use lightning-cli to execute the payment.
```
lightning-cli pay [bolt11]
```
7. Verify Payment: Verify that the payment was successful.
```
lightning-cli listpays [bolt11]
```
Replace placeholders like [msatoshi], [label], [description], and [bolt11] with actual values.