feat: Added support to Android via Termux App (#423)

This PR adds support to Android via the Termux App.

pikaraoke/app.py

@@ -550,7 +550,10 @@ def info():
     url = k.url
 
     # cpu
-    cpu = str(psutil.cpu_percent()) + "%"
+    try:
+        cpu = str(psutil.cpu_percent()) + "%"
+    except:
+        cpu = "CPU usage query unsupported"
 
     # mem
     memory = psutil.virtual_memory()
@@ -925,6 +928,10 @@ def main():
     )
     cherrypy.engine.start()
 
+    # force headless mode when on Android
+    if (platform == "android") and not args.hide_splash_screen:
+        args.hide_splash_screen = True
+        logging.info("Forced to run headless mode in Android")
     # Start the splash screen using selenium
     if not args.hide_splash_screen:
         if raspberry_pi:

pikaraoke/karaoke.py

@@ -189,18 +189,30 @@ def __init__(
 
         self.generate_qr_code()
 
-    # Other ip-getting methods are unreliable and sometimes return 127.0.0.1
-    # https://stackoverflow.com/a/28950776
     def get_ip(self):
-        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-        try:
-            # doesn't even have to be reachable
-            s.connect(("10.255.255.255", 1))
-            IP = s.getsockname()[0]
-        except Exception:
-            IP = "127.0.0.1"
-        finally:
-            s.close()
+        # python socket.connect will not work on android, access denied. Workaround: use ifconfig which is installed to termux by default, iirc.
+        if self.platform == "android":
+            # shell command is: ifconfig 2> /dev/null | awk '/wlan0/{flag=1} flag && /inet /{print $2; exit}'
+            IP = (
+                subprocess.check_output(
+                    "ifconfig 2> /dev/null | awk '/wlan0/{flag=1} flag && /inet /{print $2; exit}'",
+                    shell=True,
+                )
+                .decode("utf8")
+                .strip()
+            )
+        else:
+            # Other ip-getting methods are unreliable and sometimes return 125.0.0.1
+            # https://stackoverflow.com/a/28950774
+            s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+            try:
+                # doesn't even have to be reachable
+                s.connect(("10.255.255.255", 1))
+                IP = s.getsockname()[0]
+            except Exception:
+                IP = "127.0.0.1"
+            finally:
+                s.close()
         return IP
 
     def get_raspi_wifi_conf_vals(self):

pikaraoke/lib/get_platform.py

@@ -24,15 +24,29 @@ def get_ffmpeg_version():
 def is_raspberry_pi():
     try:
         return (
-            os.uname()[4][:3] == "arm" or os.uname()[4] == "aarch64"
-        ) and sys.platform != "darwin"
+            (os.uname()[4][:3] == "arm" or os.uname()[4] == "aarch64")
+            and sys.platform != "darwin"
+            and not is_android()
+        )
     except AttributeError:
         return False
 
 
+def is_android():
+    return os.path.exists("/system/app/") and os.path.exists("/system/priv-app")
+
+
 def get_platform():
     if sys.platform == "darwin":
         return "osx"
+    # elif sys.platform.startswith("linux"):
+    #    for key in os.environ:
+    #        if key == "PREFIX":
+    #            if "termux" in os.environ[key]:
+    #                return "Termux on Android"
+    #    return "linux"
+    elif is_android():
+        return "android"
     elif is_raspberry_pi():
         try:
             with open("/proc/device-tree/model", "r") as file: