Respect the user's mpv input.conf settings (#230)

Respect the user's mpv input.conf settings

anime_downloader/players/mpv.py

@@ -22,17 +22,32 @@ def args(self):
         return ['--input-conf='+get_mpv_configfile(), self.stream_url]
 
 
-def get_mpv_configfile():
-    conf = os.path.join(config.APP_DIR, 'mpv-config.conf')
-
-    # TODO: Use available config too(?)
+def get_mpv_home():
+    if 'MPV_HOME' in os.environ:
+        return os.environ.get('MPV_HOME')
+    elif 'XDG_CONFIG_HOME' in os.environ:
+        return os.path.join(os.environ.get('XDG_CONFIG_HOME'), 'mpv')
+    elif os.path.exists(os.path.expanduser('~/.mpv')):
+        return os.path.expanduser('~/.mpv')
+    elif os.name == 'posix':
+        return os.path.expanduser('~/.config/mpv')
+    else:
+        return os.path.join(os.environ.get('APPDATA'), 'mpv')
 
-    # For now don't do this
-    # if os.path.exists(conf):
-    #     return conf
 
+def get_mpv_configfile():
+    # Read the user's input config file if it exists
+    userconf = os.path.join(get_mpv_home(), 'input.conf')
+    userconftext = ''
+    if os.path.exists(userconf):
+        with open(userconf, 'r') as userconfigfile:
+            userconftext = userconfigfile.read()
+
+    # Create a new config file to add anime-downloader specific key bindings
+    conf = os.path.join(config.APP_DIR, 'mpv-config.conf')
     with open(conf, 'w') as configfile:
         configfile.write(
+            userconftext +
             'q quit 50\nCLOSE_WIN quit 50\nSTOP quit 50\nctrl+c quit 50\n'
             '> quit 51\nNEXT quit 51\n< quit 52\nPREV quit 52\ni seek 80\n'
         )