From ff11e7878bc14e658cc2efd518a845f27ff7c738 Mon Sep 17 00:00:00 2001
From: callebtc <93376500+callebtc@users.noreply.github.com>
Date: Sun, 25 Dec 2022 11:42:37 +0100
Subject: [PATCH] mint: endpoint get pubkeys for keyset

---
 cashu/mint/ledger.py |  8 ++++----
 cashu/mint/router.py | 14 +++++++++++++-
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/cashu/mint/ledger.py b/cashu/mint/ledger.py
index afa1f99..af4129b 100644
--- a/cashu/mint/ledger.py
+++ b/cashu/mint/ledger.py
@@ -57,12 +57,12 @@ class Ledger:
             seed=self.master_key, derivation_path=derivation_path, version=VERSION
         )
         # check if current keyset is stored in db and store if not
-        logger.debug(f"Loading keyset {keyset.id} from db.")
+        logger.trace(f"Loading keyset {keyset.id} from db.")
         tmp_keyset_local: List[MintKeyset] = await self.crud.get_keyset(
             id=keyset.id, db=self.db
         )
         if not len(tmp_keyset_local) and autosave:
-            logger.debug(f"Storing keyset {keyset.id}.")
+            logger.trace(f"Storing keyset {keyset.id}.")
             await self.crud.store_keyset(keyset=keyset, db=self.db)
 
         # store the new keyset in the current keysets
@@ -74,10 +74,10 @@ class Ledger:
         # load all past keysets from db
         tmp_keysets: List[MintKeyset] = await self.crud.get_keyset(db=self.db)
         self.keysets = MintKeysets(tmp_keysets)
-        logger.debug(f"Loading {len(self.keysets.keysets)} keysets form db.")
+        logger.trace(f"Loading {len(self.keysets.keysets)} keysets form db.")
         # generate all derived keys from stored derivation paths of past keysets
         for _, v in self.keysets.keysets.items():
-            logger.debug(f"Generating keys for keyset {v.id}")
+            logger.trace(f"Generating keys for keyset {v.id}")
             v.generate_keys(self.master_key)
         # load the current keyset
         self.keyset = await self.load_keyset(self.derivation_path, autosave)
diff --git a/cashu/mint/router.py b/cashu/mint/router.py
index 09ca2e2..c7fe9f9 100644
--- a/cashu/mint/router.py
+++ b/cashu/mint/router.py
@@ -23,11 +23,23 @@ router: APIRouter = APIRouter()
 
 @router.get("/keys")
 async def keys() -> dict[int, str]:
-    """Get the public keys of the mint"""
+    """Get the public keys of the mint of the newest keyset"""
     keyset = ledger.get_keyset()
     return keyset
 
 
+@router.get("/keys/{idBase64Urlsafe}")
+async def keyset_keys(idBase64Urlsafe: str) -> dict[int, str]:
+    """
+    Get the public keys of the mint of a specificy keyset id.
+    The id is encoded in base64_urlsafe and needs to be converted back to
+    normal base64 before it can be processed.
+    """
+    id = idBase64Urlsafe.replace("-", "+").replace("_", "/")
+    keyset = ledger.get_keyset(keyset_id=id)
+    return keyset
+
+
 @router.get("/keysets")
 async def keysets() -> dict[str, list[str]]:
     """Get all active keysets of the mint"""