Mint: Recover pending melts at startup (#499)

* wip works with fakewallet

* startup refactor

* add tests

* regtest tests for pending melts

* wip CLN

* remove db migration

* remove foreign key relation to keyset id

* fix: get_promise from db and restore DLEQs

* test: check for keyset not found error

* fix migrations

* lower-case all db column names

* add more tests for regtest

* simlate failure for lightning

* test wallet spent state with hodl invoices

* retry

* regtest with postgres

* retry postgres

* add sleeps

* longer sleep on github

* more sleep for github sigh

* increase sleep ffs

* add sleep loop

* try something

* do not pay with wallet but with ledger

* fix lnbits pending state

* fix pipeline to use fake admin from docker

tests/helpers.py

@@ -32,6 +32,7 @@ is_regtest: bool = not is_fake
 is_deprecated_api_only = settings.debug_mint_only_deprecated
 is_github_actions = os.getenv("GITHUB_ACTIONS") == "true"
 is_postgres = settings.mint_database.startswith("postgres")
+SLEEP_TIME = 1 if not is_github_actions else 2
 
 docker_lightning_cli = [
     "docker",
@@ -156,31 +157,6 @@ def pay_onchain(address: str, sats: int) -> str:
     return run_cmd(cmd)
 
 
-# def clean_database(settings):
-#     if DB_TYPE == POSTGRES:
-#         db_url = make_url(settings.lnbits_database_url)
-
-#         conn = psycopg2.connect(settings.lnbits_database_url)
-#         conn.autocommit = True
-#         with conn.cursor() as cur:
-#             try:
-#                 cur.execute("DROP DATABASE lnbits_test")
-#             except psycopg2.errors.InvalidCatalogName:
-#                 pass
-#             cur.execute("CREATE DATABASE lnbits_test")
-
-#         db_url.database = "lnbits_test"
-#         settings.lnbits_database_url = str(db_url)
-
-#         core.db.__init__("database")
-
-#         conn.close()
-#     else:
-#         # FIXME: do this once mock data is removed from test data folder
-#         # os.remove(settings.lnbits_data_folder + "/database.sqlite3")
-#         pass
-
-
 def pay_if_regtest(bolt11: str):
     if is_regtest:
         pay_real_invoice(bolt11)