From 24575c9fa44dfc0f43b57287228230dba121817a Mon Sep 17 00:00:00 2001
From: trueptolemy <trueptolemy@foxmail.com>
Date: Mon, 7 Oct 2019 03:17:54 +0800
Subject: [PATCH] pylightning: Fix the compat of `txprepare`

---
 contrib/pylightning/lightning/lightning.py | 37 +++++++++++++++++-----
 1 file changed, 29 insertions(+), 8 deletions(-)

diff --git a/contrib/pylightning/lightning/lightning.py b/contrib/pylightning/lightning/lightning.py
index f7e17dc78..792cc230e 100644
--- a/contrib/pylightning/lightning/lightning.py
+++ b/contrib/pylightning/lightning/lightning.py
@@ -891,7 +891,19 @@ class LightningRpc(UnixDomainSocketRpc):
 
         return self.call("withdraw", payload)
 
-    def txprepare(self, outputs, feerate=None, minconf=None, utxos=None):
+    def _deprecated_txprepare(self, destination, satoshi, feerate=None, minconf=None):
+        warnings.warn("txprepare now takes output arg: expect removal"
+                      " in Mid-2020",
+                      DeprecationWarning)
+        payload = {
+            "destination": destination,
+            "satoshi": satoshi,
+            "feerate": feerate,
+            "minconf": minconf,
+        }
+        return self.call("txprepare", payload)
+
+    def txprepare(self, *args, **kwargs):
         """
         Prepare a bitcoin transaction which sends to [outputs].
         The format of output is like [{address1: amount1},
@@ -901,13 +913,22 @@ class LightningRpc(UnixDomainSocketRpc):
         Outputs will be reserved until you call txdiscard or txsend, or
         lightningd restarts.
         """
-        payload = {
-            "outputs": outputs,
-            "feerate": feerate,
-            "minconf": minconf,
-            "utxos": utxos,
-        }
-        return self.call("txprepare", payload)
+        if 'destination' in kwargs or 'satoshi' in kwargs:
+            return self._deprecated_txprepare(*args, **kwargs)
+
+        if not isinstance(args[0], list):
+            return self._deprecated_txprepare(*args, **kwargs)
+
+        def _txprepare(outputs, feerate=None, minconf=None, utxos=None):
+            payload = {
+                "outputs": outputs,
+                "feerate": feerate,
+                "minconf": minconf,
+                "utxos": utxos,
+            }
+            return self.call("txprepare", payload)
+
+        return _txprepare(*args, **kwargs)
 
     def txdiscard(self, txid):
         """