Wallet: Lightning interface (#318)

* mint does not start yet

* fix import

* revert mint db migrations

* handle zero fee case

* cli: adjust fee message

* wallet: replace requests with httpx

* clean up

* rename http client decorator

* fix pending check in main, todo: TEST PROXIES WITH HTTPX

* fix up

* use httpx for nostr as well

* update packages to same versions as https://github.com/lnbits/lnbits/pull/1609/files

* fix proof deserialization

* check for string

* tests passing

* adjust wallet api tests

* lockfile

* add correct responses to Lightning interface and delete melt_id for proofs for which the payent has failed

* fix create_invoice checking_id response

* migrations atomic

* proofs are stored automatically when created

* make format

* use bolt11 lib

* stricter type checking

* add fee response to payments

* assert fees in test_melt

* test that mint_id and melt_id is stored correctly in proofs and proofs_used

* remove traces

* refactor: Lightning interface into own file and LedgerCrud with typing

* fix tests

* fix payment response

* rename variable

cashu/core/helpers.py

@@ -3,7 +3,7 @@ import math
 from functools import partial, wraps
 from typing import List
 
-from ..core.base import Proof
+from ..core.base import BlindedSignature, Proof
 from ..core.settings import settings
 
 
@@ -11,6 +11,10 @@ def sum_proofs(proofs: List[Proof]):
     return sum([p.amount for p in proofs])
 
 
+def sum_promises(promises: List[BlindedSignature]):
+    return sum([p.amount for p in promises])
+
+
 def async_wrap(func):
     @wraps(func)
     async def run(*args, loop=None, executor=None, **kwargs):