[cli/core/api] Allow setting locale/language

Fixes #35 as far as I can tell

README.md

@@ -302,6 +302,8 @@ log_level = debug
 max_memory = 1024
 ; default install directory
 install_dir = /mnt/tank/games
+; locale override, must be in RFC 1766 format (e.g. "en-US")
+locale = en-US
 
 ; default settings to use (currently limited to WINE executable)
 [default]
@@ -321,6 +323,8 @@ skip_update_check = true
 ; start parameters to use (in addition to the required ones)
 start_params = -windowed
 wine_executable = /path/to/proton/wine64
+; override language with two-letter language code
+language = fr
 
 [AppName.env]
 ; environment variables to set for this game (mostly useful on linux)

legendary/api/egs.py

@@ -22,7 +22,7 @@ class EPCAPI:
     _ecommerce_host = 'ecommerceintegration-public-service-ecomprod02.ol.epicgames.com'
     _datastorage_host = 'datastorage-public-service-liveegs.live.use1a.on.epicgames.com'
 
-    def __init__(self):
+    def __init__(self, lc='en', cc='US'):
         self.session = requests.session()
         self.log = logging.getLogger('EPCAPI')
         self.unauth_session = requests.session()
@@ -33,6 +33,9 @@ class EPCAPI:
         self.access_token = None
         self.user = None
 
+        self.language_code = lc
+        self.country_code = cc
+
     def resume_session(self, session):
         self.session.headers['Authorization'] = f'bearer {session["access_token"]}'
         r = self.session.get(f'https://{self._oauth_host}/account/api/oauth/verify')
@@ -115,7 +118,7 @@ class EPCAPI:
     def get_game_info(self, namespace, catalog_item_id):
         r = self.session.get(f'https://{self._catalog_host}/catalog/api/shared/namespace/{namespace}/bulk/items',
                              params=dict(id=catalog_item_id, includeDLCDetails=True, includeMainGameDetails=True,
-                                         country='US', locale='en'))
+                                         country=self.country_code, locale=self.language_code))
         r.raise_for_status()
         return r.json().get(catalog_item_id, None)
 

legendary/cli.py

@@ -370,7 +370,8 @@ class LegendaryCLI:
 
         params, cwd, env = self.core.get_launch_parameters(app_name=app_name, offline=args.offline,
                                                            extra_args=extra, user=args.user_name_override,
-                                                           wine_bin=args.wine_bin, wine_pfx=args.wine_pfx)
+                                                           wine_bin=args.wine_bin, wine_pfx=args.wine_pfx,
+                                                           language=args.language)
 
         logger.info(f'Launching {app_name}...')
         if args.dry_run:
@@ -679,6 +680,8 @@ def main():
                                help='Override username used when launching the game (only works with some titles)')
     launch_parser.add_argument('--dry-run', dest='dry_run', action='store_true',
                                help='Print the command line that would have been used to launch the game and exit')
+    launch_parser.add_argument('--language', dest='language', action='store', metavar='<two letter language code>',
+                               help='Override language for game launch (defaults to system settings)')
     if os.name != 'nt':
         launch_parser.add_argument('--wine', dest='wine_bin', action='store', metavar='<wine binary>',
                                    default=os.environ.get('LGDRY_WINE_BINARY', None),

legendary/core.py

@@ -9,6 +9,7 @@ import shutil
 from base64 import b64decode
 from collections import defaultdict
 from datetime import datetime, timezone
+from locale import getdefaultlocale
 from multiprocessing import Queue
 from random import choice as randchoice
 from requests.exceptions import HTTPError
@@ -46,6 +47,7 @@ class LegendaryCore:
         self.lgd = LGDLFS()
 
         self.local_timezone = datetime.now().astimezone().tzinfo
+        self.language_code, self.country_code = ('en', 'US')
 
         # epic lfs only works on Windows right now
         if os.name == 'nt':
@@ -53,6 +55,22 @@ class LegendaryCore:
         else:
             self.egl = None
 
+    def get_locale(self):
+        locale = self.lgd.config.get('Legendary', 'locale', fallback=getdefaultlocale()[0])
+
+        if locale:
+            try:
+                self.language_code, self.country_code = locale.split('-' if '-' in locale else '_')
+                self.log.debug(f'Set locale to {self.language_code}-{self.country_code}')
+
+                # if egs is loaded make sure to override its language setting as well
+                if self.egs:
+                    self.egs.language_code, self.egs.country_code = self.language_code, self.country_code
+            except Exception as e:
+                self.log.warning(f'Getting locale failed: {e!r}, falling back to using en-US.')
+        else:
+            self.log.warning(f'Could not determine locale, falling back to en-US')
+
     def auth(self, username, password):
         """
         Attempts direct non-web login, raises CaptchaError if manual login is required
@@ -158,6 +176,8 @@ class LegendaryCore:
     def get_game_and_dlc_list(self, update_assets=True,
                               platform_override=None,
                               skip_ue=True) -> (List[Game], Dict[str, Game]):
+        # resolve locale
+        self.get_locale()
         _ret = []
         _dlc = defaultdict(list)
 
@@ -209,7 +229,8 @@ class LegendaryCore:
 
     def get_launch_parameters(self, app_name: str, offline: bool = False,
                               user: str = None, extra_args: list = None,
-                              wine_bin: str = None, wine_pfx: str = None) -> (list, str, dict):
+                              wine_bin: str = None, wine_pfx: str = None,
+                              language: str = None) -> (list, str, dict):
         install = self.lgd.get_installed_game(app_name)
         game = self.lgd.get_game_meta(app_name)
 
@@ -260,11 +281,16 @@ class LegendaryCore:
                 f.write(ovt)
             params.append(f'-epicovt={ovt_path}')
 
+        language_code = self.lgd.config.get(app_name, 'language', fallback=language)
+        if not language_code:  # fall back to system or config language
+            self.get_locale()
+            language_code = self.language_code
+
         params.extend([
               '-EpicPortal',
               f'-epicusername={user_name}',
               f'-epicuserid={account_id}',
-              '-epiclocale=en'
+              f'-epiclocale={language_code}'
         ])
 
         if extra_args: