Merge bitcoin#21063: wallet, rpc: update listdescriptors response format

2e5f7de wallet, rpc: update listdescriptors response format (Ivan Metlushko)

Pull request description:

  Update `listdescriptors` response format according to [RPC interface guidelines](https://github.com/bitcoin/bitcoin/blob/master/doc/developer-notes.md#rpc-interface-guidelines).

  This is a follow up for bitcoin#20226

  **Before:**
  ```
  Result:
  [                               (json array) Response is an array of descriptor objects
    {                             (json object)
      "desc" : "str",             (string) Descriptor string representation
      "timestamp" : n,            (numeric) The creation time of the descriptor
      "active" : true|false,      (boolean) Activeness flag
      "internal" : true|false,    (boolean, optional) Whether this is internal or external descriptor; defined only for active descriptors
      "range" : [                 (json array, optional) Defined only for ranged descriptors
        n,                        (numeric) Range start inclusive
        n                         (numeric) Range end inclusive
      ],
      "next" : n                  (numeric, optional) The next index to generate addresses from; defined only for ranged descriptors
    },
    ...
  ]
  ```

  **After:**
  ```
  Result:
  {                                 (json object)
    "wallet_name" : "str",          (string) Name of wallet this operation was performed on
    "descriptors" : [               (json array) Array of descriptor objects
      {                             (json object)
        "desc" : "str",             (string) Descriptor string representation
        "timestamp" : n,            (numeric) The creation time of the descriptor
        "active" : true|false,      (boolean) Activeness flag
        "internal" : true|false,    (boolean, optional) Whether this is internal or external descriptor; defined only for active descriptors
        "range" : [                 (json array, optional) Defined only for ranged descriptors
          n,                        (numeric) Range start inclusive
          n                         (numeric) Range end inclusive
        ],
        "next" : n                  (numeric, optional) The next index to generate addresses from; defined only for ranged descriptors
      },
      ...
    ]
  }
  ```

ACKs for top commit:
  achow101:
    re-ACK 2e5f7de
  meshcollider:
    utACK 2e5f7de
  jonatack:
    re-ACK 2e5f7de

Tree-SHA512: 49bf73e46e2a61003ce594a4bfc506eb9592ccb799c2909c43a1a527490a4b4009f78dc09f3d47b4e945d3d7bb3cd2632cf48c5ace5feed5066158cc010dddc1

Author: fanquake

src/wallet/rpcdump.cpp

@@ -1943,22 +1943,23 @@ RPCHelpMan listdescriptors()
         "listdescriptors",
         "\nList descriptors imported into a descriptor-enabled wallet.",
         {},
-        RPCResult{
-            RPCResult::Type::ARR, "", "Response is an array of descriptor objects",
+        RPCResult{RPCResult::Type::OBJ, "", "", {
+            {RPCResult::Type::STR, "wallet_name", "Name of wallet this operation was performed on"},
+            {RPCResult::Type::ARR, "descriptors", "Array of descriptor objects",
             {
                 {RPCResult::Type::OBJ, "", "", {
                     {RPCResult::Type::STR, "desc", "Descriptor string representation"},
                     {RPCResult::Type::NUM, "timestamp", "The creation time of the descriptor"},
                     {RPCResult::Type::BOOL, "active", "Activeness flag"},
-                    {RPCResult::Type::BOOL, "internal", true, "Whether this is internal or external descriptor; defined only for active descriptors"},
+                    {RPCResult::Type::BOOL, "internal", true, "Whether this is an internal or external descriptor; defined only for active descriptors"},
                     {RPCResult::Type::ARR_FIXED, "range", true, "Defined only for ranged descriptors", {
                         {RPCResult::Type::NUM, "", "Range start inclusive"},
                         {RPCResult::Type::NUM, "", "Range end inclusive"},
                     }},
                     {RPCResult::Type::NUM, "next", true, "The next index to generate addresses from; defined only for ranged descriptors"},
                 }},
-            }
-        },
+            }}
+        }},
         RPCExamples{
             HelpExampleCli("listdescriptors", "") + HelpExampleRpc("listdescriptors", "")
         },
@@ -1975,7 +1976,7 @@ RPCHelpMan listdescriptors()
 
     LOCK(wallet->cs_wallet);
 
-    UniValue response(UniValue::VARR);
+    UniValue descriptors(UniValue::VARR);
     const auto active_spk_mans = wallet->GetActiveScriptPubKeyMans();
     for (const auto& spk_man : wallet->GetAllScriptPubKeyMans()) {
         const auto desc_spk_man = dynamic_cast<DescriptorScriptPubKeyMan*>(spk_man);
@@ -2004,9 +2005,13 @@ RPCHelpMan listdescriptors()
             spk.pushKV("range", range);
             spk.pushKV("next", wallet_descriptor.next_index);
         }
-        response.push_back(spk);
+        descriptors.push_back(spk);
     }
 
+    UniValue response(UniValue::VOBJ);
+    response.pushKV("wallet_name", wallet->GetName());
+    response.pushKV("descriptors", descriptors);
+
     return response;
 },
     };

test/functional/wallet_listdescriptors.py

@@ -37,15 +37,16 @@ def run_test(self):
 
         self.log.info('Test the command for empty descriptors wallet.')
         node.createwallet(wallet_name='w2', blank=True, descriptors=True)
-        assert_equal(0, len(node.get_wallet_rpc('w2').listdescriptors()))
+        assert_equal(0, len(node.get_wallet_rpc('w2').listdescriptors()['descriptors']))
 
         self.log.info('Test the command for a default descriptors wallet.')
         node.createwallet(wallet_name='w3', descriptors=True)
         result = node.get_wallet_rpc('w3').listdescriptors()
-        assert_equal(2, len(result))
-        assert_equal(2, len([d for d in result if d['active']]))
-        assert_equal(1, len([d for d in result if d['internal']]))
-        for item in result:
+        assert_equal("w3", result['wallet_name'])
+        assert_equal(2, len(result['descriptors']))
+        assert_equal(2, len([d for d in result['descriptors'] if d['active']]))
+        assert_equal(1, len([d for d in result['descriptors'] if d['internal']]))
+        for item in result['descriptors']:
             assert item['desc'] != ''
             assert item['next'] == 0
             assert item['range'] == [0, 0]
@@ -60,12 +61,17 @@ def run_test(self):
             'desc': descsum_create('pkh(' + xprv + hardened_path + '/0/*)'),
             'timestamp': 1296688602,
         }])
-        expected = {'desc': descsum_create('pkh([80002067' + hardened_path + ']' + xpub_acc + '/0/*)'),
-                    'timestamp': 1296688602,
-                    'active': False,
-                    'range': [0, 0],
-                    'next': 0}
-        assert_equal([expected], wallet.listdescriptors())
+        expected = {
+            'wallet_name': 'w2',
+            'descriptors': [
+                {'desc': descsum_create('pkh([80002067' + hardened_path + ']' + xpub_acc + '/0/*)'),
+                 'timestamp': 1296688602,
+                 'active': False,
+                 'range': [0, 0],
+                 'next': 0},
+            ],
+        }
+        assert_equal(expected, wallet.listdescriptors())
 
         self.log.info('Test non-active non-range combo descriptor')
         node.createwallet(wallet_name='w4', blank=True, descriptors=True)
@@ -74,9 +80,14 @@ def run_test(self):
             'desc': descsum_create('combo(' + node.get_deterministic_priv_key().key + ')'),
             'timestamp': 1296688602,
         }])
-        expected = [{'active': False,
-                     'desc': 'combo(038af19f35924e37ad7c3c8045d1e19b9b90b7310e08b892e620c253a102fe49f0)#2j2j0825',
-                     'timestamp': 1296688602}]
+        expected = {
+            'wallet_name': 'w4',
+            'descriptors': [
+                {'active': False,
+                 'desc': 'combo(038af19f35924e37ad7c3c8045d1e19b9b90b7310e08b892e620c253a102fe49f0)#2j2j0825',
+                 'timestamp': 1296688602},
+            ]
+        }
         assert_equal(expected, wallet.listdescriptors())