config: remove 'open_last_wallet' side-effecting

related: #5629

electrum/daemon.py

@@ -366,8 +366,7 @@ class Daemon(Logger):
         config = SimpleConfig(config_options)
         if self.gui_object:
             if hasattr(self.gui_object, 'new_window'):
-                config.open_last_wallet()
-                path = config.get_wallet_path()
+                path = config.get_wallet_path(use_gui_last_wallet=True)
                 self.gui_object.new_window(path, config.get('url'))
                 response = "ok"
             else:

electrum/gui/kivy/__init__.py

@@ -27,6 +27,7 @@
 
 import sys
 import os
+from typing import TYPE_CHECKING
 
 try:
     sys.argv = ['']
@@ -40,12 +41,17 @@ except ImportError:
 kivy.require('1.8.0')
 from kivy.logger import Logger
 
+if TYPE_CHECKING:
+    from electrum.simple_config import SimpleConfig
+    from electrum.daemon import Daemon
+    from electrum.plugin import Plugins
+
 
 
 
 class ElectrumGui:
 
-    def __init__(self, config, daemon, plugins):
+    def __init__(self, config: 'SimpleConfig', daemon: 'Daemon', plugins: 'Plugins'):
         Logger.debug('ElectrumGUI: initialising')
         self.daemon = daemon
         self.network = daemon.network
@@ -54,7 +60,6 @@ class ElectrumGui:
 
     def main(self):
         from .main_window import ElectrumWindow
-        self.config.open_last_wallet()
         w = ElectrumWindow(config=self.config,
                            network=self.network,
                            plugins = self.plugins,

electrum/gui/kivy/main_window.py

@@ -7,6 +7,7 @@ import traceback
 from decimal import Decimal
 import threading
 import asyncio
+from typing import TYPE_CHECKING
 
 from electrum.bitcoin import TYPE_ADDRESS
 from electrum.storage import WalletStorage
@@ -77,6 +78,10 @@ from electrum.util import (base_units, NoDynamicFeeEstimates, decimal_point_to_b
 from .uix.dialogs.lightning_open_channel import LightningOpenChannelDialog
 from .uix.dialogs.lightning_channels import LightningChannelsDialog
 
+if TYPE_CHECKING:
+    from electrum.simple_config import SimpleConfig
+
+
 class ElectrumWindow(App):
 
     electrum_config = ObjectProperty(None)
@@ -311,7 +316,7 @@ class ElectrumWindow(App):
         App.__init__(self)#, **kwargs)
 
         title = _('Electrum App')
-        self.electrum_config = config = kwargs.get('config', None)
+        self.electrum_config = config = kwargs.get('config', None)  # type: SimpleConfig
         self.language = config.get('language', 'en')
         self.network = network = kwargs.get('network', None)  # type: Network
         if self.network:
@@ -543,7 +548,7 @@ class ElectrumWindow(App):
             self.network.register_callback(self.on_channel, ['channel'])
             self.network.register_callback(self.on_payment_status, ['payment_status'])
         # load wallet
-        self.load_wallet_by_name(self.electrum_config.get_wallet_path())
+        self.load_wallet_by_name(self.electrum_config.get_wallet_path(use_gui_last_wallet=True))
         # URI passed in config
         uri = self.electrum_config.get('url')
         if uri:
@@ -565,7 +570,8 @@ class ElectrumWindow(App):
         elif not self.wallet:
             # wizard did not return a wallet; and there is no wallet open atm
             # try to open last saved wallet (potentially start wizard again)
-            self.load_wallet_by_name(self.electrum_config.get_wallet_path(), ask_if_wizard=True)
+            self.load_wallet_by_name(self.electrum_config.get_wallet_path(use_gui_last_wallet=True),
+                                     ask_if_wizard=True)
 
     def load_wallet_by_name(self, path, ask_if_wizard=False):
         if not path:
@@ -1077,7 +1083,7 @@ class ElectrumWindow(App):
         self.stop_wallet()
         os.unlink(wallet_path)
         self.show_error(_("Wallet removed: {}").format(basename))
-        new_path = self.electrum_config.get_wallet_path()
+        new_path = self.electrum_config.get_wallet_path(use_gui_last_wallet=True)
         self.load_wallet_by_name(new_path)
 
     def show_seed(self, label):

electrum/gui/qt/__init__.py

@@ -343,8 +343,7 @@ class ElectrumGui(Logger):
             return
         self.timer.start()
 
-        self.config.open_last_wallet()
-        path = self.config.get_wallet_path()
+        path = self.config.get_wallet_path(use_gui_last_wallet=True)
         if not self.start_new_window(path, self.config.get('url'), app_is_starting=True):
             return
         signal.signal(signal.SIGINT, lambda *args: self.app.quit())

electrum/gui/qt/main_window.py

@@ -556,7 +556,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         self.recently_visited_menu.setEnabled(len(recent))
 
     def get_wallet_folder(self):
-        return os.path.dirname(os.path.abspath(self.config.get_wallet_path()))
+        return os.path.dirname(os.path.abspath(self.wallet.storage.path))
 
     def new_wallet(self):
         try:

electrum/simple_config.py

@@ -265,15 +265,15 @@ class SimpleConfig(Logger):
             if os.path.exists(self.path):  # or maybe not?
                 raise
 
-    def get_wallet_path(self):
+    def get_wallet_path(self, *, use_gui_last_wallet=False):
         """Set the path of the wallet."""
 
         # command line -w option
         if self.get('wallet_path'):
             return os.path.join(self.get('cwd', ''), self.get('wallet_path'))
 
-        # path in config file
-        path = self.get('default_wallet_path')
+        if use_gui_last_wallet:
+            path = self.get('gui_last_wallet')
             if path and os.path.exists(path):
                 return path
 
@@ -304,12 +304,6 @@ class SimpleConfig(Logger):
     def get_session_timeout(self):
         return self.get('session_timeout', 300)
 
-    def open_last_wallet(self):
-        if self.get('wallet_path') is None:
-            last_wallet = self.get('gui_last_wallet')
-            if last_wallet is not None and os.path.exists(last_wallet):
-                self.cmdline_options['default_wallet_path'] = last_wallet
-
     def save_last_wallet(self, wallet):
         if self.get('wallet_path') is None:
             path = wallet.storage.path