From 225981eea32f8e0bcf85e928d84d172376c3e938 Mon Sep 17 00:00:00 2001
From: Believethehype <tobias_baur@yahoo.com>
Date: Wed, 27 Dec 2023 14:19:19 +0100
Subject: [PATCH] added examples for nwc (currently not yet used by the
 framework)

---
 nostr_dvm/tasks/texttospeech.py |  4 +-
 nostr_dvm/utils/nwc_tools.py    | 86 +++++++++++++++++++++++++++++++++
 2 files changed, 89 insertions(+), 1 deletion(-)
 create mode 100644 nostr_dvm/utils/nwc_tools.py

diff --git a/nostr_dvm/tasks/texttospeech.py b/nostr_dvm/tasks/texttospeech.py
index 996ff13..3b10d67 100644
--- a/nostr_dvm/tasks/texttospeech.py
+++ b/nostr_dvm/tasks/texttospeech.py
@@ -100,7 +100,9 @@ class TextToSpeech(DVMTaskInterface):
 
         print(TTS().list_models())
         try:
-            tts = TTS("tts_models/multilingual/multi-dataset/xtts_v2").to(device)
+            model = "tts_models/multilingual/multi-dataset/your_tts"
+            #model = "tts_models/multilingual/multi-dataset/xtts_v2"
+            tts = TTS(model).to(device)
 
             tts.tts_to_file(
                 text=options["prompt"],
diff --git a/nostr_dvm/utils/nwc_tools.py b/nostr_dvm/utils/nwc_tools.py
new file mode 100644
index 0000000..57c9afe
--- /dev/null
+++ b/nostr_dvm/utils/nwc_tools.py
@@ -0,0 +1,86 @@
+import json
+import os
+
+import requests
+from nostr_sdk import Keys, PublicKey, Client, nip04_encrypt, EventBuilder, Tag
+
+from nostr_dvm.utils.dvmconfig import DVMConfig
+from nostr_dvm.utils.nostr_utils import check_and_set_private_key
+from nostr_dvm.utils.zap_utils import zaprequest
+
+
+def nwc_zap(connectionstr, bolt11, keys):
+    target_pubkey, relay, secret = parse_connection_str(connectionstr)
+    SecretSK = Keys.from_sk_str(secret)
+
+    content = {
+        "method": "pay_invoice",
+        "params": {
+            "invoice": bolt11
+        }
+    }
+
+    client = Client(keys)
+    client.add_relay(relay)
+    client.connect()
+
+    client_public_key = PublicKey.from_hex(target_pubkey)
+    encrypted_content = nip04_encrypt(SecretSK.secret_key(), client_public_key, json.dumps(content))
+
+    pTag = Tag.parse(["p", client_public_key.to_hex()])
+    event = EventBuilder(23194, encrypted_content,
+                         [pTag]).to_event(keys)
+
+    event_id = client.send_event(event)
+    print(event_id.to_hex())
+
+
+def parse_connection_str(connectionstring):
+    split = connectionstring.split("?")
+    targetpubkey = split[0].split(":")[1]
+    split2 = split[1].split("&")
+    relay = split2[0].split("=")[1]
+    relay = relay.replace("%3A%2F%2F", "://")
+    secret = split2[1].split("=")[1]
+    return targetpubkey, relay, secret
+
+
+def make_nwc_account(identifier, nwcdomain):
+    pubkey = Keys.from_sk_str(os.getenv("DVM_PRIVATE_KEY_" + identifier.upper())).public_key().to_hex()
+    data = {
+        'name': identifier,
+        'host': os.getenv("LNBITS_HOST"),
+        'key': os.getenv("LNBITS_ADMIN_KEY_" + identifier.upper()),
+        'pubkey': pubkey,
+    }
+
+    try:
+        url = nwcdomain
+        header = {"content-type": "application/json"}
+        res = requests.post(url, headers=header, json=data)
+        obj = json.loads(res.text)
+        if obj['params']['connectionURI'] != "Users already exists":
+            return obj['params']['connectionURI']
+        else:
+            return ""
+
+    except Exception as e:
+        print(e)
+        return ""
+
+
+def nwc_test(nwc_server):
+    connectionstring = make_nwc_account("test", nwc_server + "/api/new")
+    print(connectionstring)
+    #  TODO Store the connection string in a db, use here if you already have one
+    # connectionstring = "nostr+walletconnect:..."
+    if connectionstring != "":
+        # we use the keys from a test user
+        keys = Keys.from_sk_str(check_and_set_private_key("test"))
+
+        # we zap npub1nxa4tywfz9nqp7z9zp7nr7d4nchhclsf58lcqt5y782rmf2hefjquaa6q8's profile 21 sats and say Cool stuff
+        pubkey = PublicKey.from_bech32("npub1nxa4tywfz9nqp7z9zp7nr7d4nchhclsf58lcqt5y782rmf2hefjquaa6q8")
+        bolt11 = zaprequest("hype@bitcoinfixesthis.org", 21, "Cool Stuff", None,
+                            pubkey, keys, DVMConfig.RELAY_LIST)
+
+        nwc_zap(connectionstring, bolt11, keys)