mmgen-remote: new quote command

mmgen/data/version

@@ -1 +1 @@
-16.3.0dev13
+16.3.0dev14

mmgen/proto/rune/rpc/remote.py

@@ -63,6 +63,7 @@ class THORChainRemoteRPCClient(RemoteRPCClient):
 			'inbound_addrs',
 			'acct_info',
 			'balance',
+			'quote',
 			'tx_info')}
 
 	def __init__(self, cfg, proto):
@@ -138,6 +139,14 @@ class THORChainRemoteRPCClient(RemoteRPCClient):
 		assert len(rune_res) == 1, f'{rune_res}: result length is not one!'
 		return self.proto.coin_amt(int(rune_res[0]['amount']), from_unit='satoshi')
 
+	def quote(self, send_asset: str, recv_asset: str, amt: Decimal):
+		"get a swap quote for a given send asset, receive asset and amount"
+		from ....swap.util import init_swap_proto, get_swap_asset
+		from_asset = get_swap_asset(self.cfg, send_asset, direction='send')
+		to_asset = get_swap_asset(self.cfg, recv_asset, direction='recv')
+		send_amt = init_swap_proto(self.cfg, from_asset).coin_amt(str(amt))
+		return self.get_quote(from_asset, to_asset, send_amt)
+
 	def get_quote(self, from_asset, to_asset, amt, *, amt_is_atomic=False):
 		from ....swap.util import get_swap_proto_mod
 		swap_cfg = get_swap_proto_mod(self.swap_proto).SwapCfg(self.cfg)

mmgen/swap/util.py

@@ -26,3 +26,8 @@ def init_swap_proto(cfg, asset):
 		asset.coin,
 		tokensym = asset.tokensym,
 		need_amt = True)
+
+def get_swap_asset(cfg, asset, *, direction='send'):
+	"given an asset symbol, and optionally direction, return a swap asset instance"
+	assert isinstance(asset, str), '‘asset’ must be a string'
+	return get_swap_proto_mod(cfg.swap_proto).SwapAsset(asset, direction)

mmgen/tool/__init__.py

@@ -125,6 +125,10 @@ def process_args(cmd, cmd_args, cls):
 				arg = False
 			else:
 				die(1, f'{arg!r}: invalid boolean value for keyword argument')
+		elif arg_type == 'Decimal':
+			from decimal import Decimal
+			Decimal(arg) # check without converting
+			return arg
 
 		try:
 			return __builtins__[arg_type](arg)

mmgen/tx/new_swap.py

@@ -13,7 +13,7 @@ tx.new_swap: new swap transaction class
 from collections import namedtuple
 
 from ..amt import UniAmt
-from ..swap.util import get_swap_proto_mod, init_swap_proto
+from ..swap.util import get_swap_asset, init_swap_proto
 
 from .new import New
 
@@ -22,7 +22,7 @@ def get_send_proto(cfg):
 		arg = cfg._args.pop(0)
 	except:
 		cfg._usage()
-	return init_swap_proto(cfg, get_swap_proto_mod(cfg.swap_proto).SwapAsset(arg, 'send'))
+	return init_swap_proto(cfg, get_swap_asset(cfg, arg, direction='send'))
 
 class NewSwap(New):
 	desc = 'swap transaction'

test/cmdtest_d/remote.py

@@ -34,6 +34,7 @@ class CmdTestRemote(CmdTestBase, CmdTestSwapMethods, CmdTestRuneMethods):
 		('actions_addr',        'getting actions for address'),
 		('actions_txid',        'getting actions for txid'),
 		('actions_addr_txid',   'getting actions for txid and addr'),
+		('quote',               'getting a swap quote'),
 		('stop_thornode_servers','stopping the Thornode RPC and Midgard servers'))
 
 	def __init__(self, cfg, trunner, cfgs, spawn):
@@ -81,5 +82,8 @@ class CmdTestRemote(CmdTestBase, CmdTestSwapMethods, CmdTestRuneMethods):
 	def actions_addr_txid(self):
 		return self._rune_remote('actions', ['addr=thor1abcdefg', 'txid=deadbeef'])
 
+	def quote(self):
+		return self._rune_remote('quote', ['BTC', 'LTC', '1.2345'])
+
 	def stop_servers(self):
 		self.stop_thornode_servers(['rpc','midgard'])