MeshChatX/android/app/src/main/java/com/meshchatx/MainActivity.java

package com.meshchatx;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
import androidx.appcompat.app.AppCompatActivity;
import com.chaquo.python.Python;
import com.chaquo.python.android.AndroidPlatform;

public class MainActivity extends AppCompatActivity {
    private WebView webView;
    private ProgressBar progressBar;
    private static final String SERVER_URL = "https://127.0.0.1:8000";
    private static final int SERVER_PORT = 8000;

    @SuppressLint("SetJavaScriptEnabled")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        webView = findViewById(R.id.webView);
        progressBar = findViewById(R.id.progressBar);

        if (!Python.isStarted()) {
            Python.start(new AndroidPlatform(this));
        }

        WebSettings webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        webSettings.setDomStorageEnabled(true);
        webSettings.setDatabaseEnabled(true);
        webSettings.setAllowFileAccess(true);
        webSettings.setAllowContentAccess(true);
        webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);

        webView.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageFinished(WebView view, String url) {
                super.onPageFinished(view, url);
                progressBar.setVisibility(android.view.View.GONE);
            }

            @Override
            public void onPageStarted(WebView view, String url, android.graphics.Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
                progressBar.setVisibility(android.view.View.VISIBLE);
            }

            @SuppressLint("WebViewClientOnReceivedSslError")
            @Override
            public void onReceivedSslError(WebView view, android.webkit.SslErrorHandler handler, android.net.http.SslError error) {
                // Ignore SSL certificate errors for localhost
                handler.proceed();
            }
        });

        startMeshChatServer();
        
        new Thread(() -> {
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            runOnUiThread(() -> {
                webView.loadUrl(SERVER_URL);
            });
        }).start();
    }

    private void startMeshChatServer() {
        new Thread(() -> {
            try {
                Python py = Python.getInstance();
                py.getModule("meshchat_wrapper").callAttr("start_server", SERVER_PORT);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }).start();
    }

    @Override
    public void onBackPressed() {
        if (webView.canGoBack()) {
            webView.goBack();
        } else {
            super.onBackPressed();
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (webView != null) {
            webView.destroy();
        }
    }
}