walletrpc: add ListUnspent RPC

lnrpc/walletrpc/walletkit.swagger.json

@@ -28,6 +28,18 @@
         }
       }
     },
+    "lnrpcAddressType": {
+      "type": "string",
+      "enum": [
+        "WITNESS_PUBKEY_HASH",
+        "NESTED_PUBKEY_HASH",
+        "UNUSED_WITNESS_PUBKEY_HASH",
+        "UNUSED_NESTED_PUBKEY_HASH"
+      ],
+      "default": "WITNESS_PUBKEY_HASH",
+      "description": "- `p2wkh`: Pay to witness key hash (`WITNESS_PUBKEY_HASH` = 0)\n- `np2wkh`: Pay to nested witness key hash (`NESTED_PUBKEY_HASH` = 1)",
+      "title": "`AddressType` has to be one of:"
+    },
     "lnrpcOutPoint": {
       "type": "object",
       "properties": {
@@ -112,6 +124,37 @@
         }
       }
     },
+    "lnrpcUtxo": {
+      "type": "object",
+      "properties": {
+        "address_type": {
+          "$ref": "#/definitions/lnrpcAddressType",
+          "title": "The type of address"
+        },
+        "address": {
+          "type": "string",
+          "title": "The address"
+        },
+        "amount_sat": {
+          "type": "string",
+          "format": "int64",
+          "title": "The value of the unspent coin in satoshis"
+        },
+        "pk_script": {
+          "type": "string",
+          "title": "The pkscript in hex"
+        },
+        "outpoint": {
+          "$ref": "#/definitions/lnrpcOutPoint",
+          "title": "The outpoint in format txid:n"
+        },
+        "confirmations": {
+          "type": "string",
+          "format": "int64",
+          "title": "The number of confirmations for the Utxo"
+        }
+      }
+    },
     "signrpcKeyDescriptor": {
       "type": "object",
       "properties": {
@@ -202,6 +245,18 @@
         }
       }
     },
+    "walletrpcListUnspentResponse": {
+      "type": "object",
+      "properties": {
+        "utxos": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/lnrpcUtxo"
+          },
+          "description": "A list of utxos satisfying the specified number of confirmations."
+        }
+      }
+    },
     "walletrpcPendingSweep": {
       "type": "object",
       "properties": {