console: add get_exchange_rate API

electrum_gui/android/console.py

@@ -2,6 +2,7 @@
 
 import asyncio
 import copy
+import decimal
 import itertools
 import json
 import logging
@@ -1377,6 +1378,18 @@ def get_exchange_currency(self, type, amount):
                 text = self.format_amount((int(Decimal(amount) / Decimal(rate) * COIN)))
             return text
 
+    @api.api_entry(force_version=api.Version.V2)
+    def get_exchange_rate(self, chain_code: str, token_id: Optional[str] = None) -> decimal.Decimal:
+        chain_info = coin_manager.get_chain_info(chain_code)
+        if token_id is None:
+            coin_code = chain_info.chain_code  # Main coin use chain_code
+        elif token_id == "fee":
+            coin_code = chain_info.fee_coin
+        else:
+            coin_code = coin_manager.get_coin_by_token_address(chain_code, token_id).code
+
+        return price_manager.get_last_price(coin_code, self.ccy)
+
     def _set_base_uint(self, base_unit):
         """
         Set base unit for(BTC/mBTC/bits/sat), for btc only