Modifier/app/src/main/java/com/example/modifier/fragments/SettingsFragment.java

package com.example.modifier.fragments;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.Fragment;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.RequestFuture;
import com.android.volley.toolbox.Volley;
import com.example.modifier.model.TelephonyConfig;
import com.example.modifier.Global;
import com.example.modifier.MainActivity;
import com.example.modifier.ModifierService;
import com.example.modifier.R;
import com.example.modifier.Utils;
import com.example.modifier.databinding.FragmentSettingsBinding;
import com.google.android.material.dialog.MaterialAlertDialogBuilder;
import com.google.gson.Gson;

import org.apache.commons.lang3.RandomStringUtils;
import org.apache.commons.lang3.StringUtils;
import org.json.JSONObject;

import java.io.File;
import java.io.FileWriter;
import java.time.Instant;
import java.util.Objects;
import java.util.Optional;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class SettingsFragment extends Fragment {

    private FragmentSettingsBinding binding;

    Handler handler = new Handler(Looper.getMainLooper());
    ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(8);

    public SettingsFragment() {
        Log.i("SettingsFragment", "SettingsFragment");
    }


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @SuppressLint("SetTextI18n")
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        if (binding != null) {
            return binding.getRoot();
        }
        binding = FragmentSettingsBinding.inflate(inflater, container, false);
        binding.tlIccid.setEndIconOnClickListener(v -> {
            binding.etIccid.setText(RandomStringUtils.randomNumeric(20));
        });
        binding.tlImsi.setEndIconOnClickListener(v -> {
            String mcc = Optional.ofNullable(binding.etMcc.getText()).map(Objects::toString).orElse("");
            String mnc = Optional.ofNullable(binding.etMnc.getText()).map(Objects::toString).orElse("");
            if (StringUtils.isEmpty(mcc) || StringUtils.isEmpty(mnc)) {
                Toast.makeText(getContext(), "MCC and MNC are required", Toast.LENGTH_SHORT).show();
                return;
            }
            binding.etImsi.setText(mcc + mnc + RandomStringUtils.randomNumeric(15 - mcc.length() - mnc.length()));
        });
        binding.tlImei.setEndIconOnClickListener(v -> {
            binding.etImei.setText(Utils.generateIMEI());
        });
        binding.btnSave.setOnClickListener(v -> {
            onSave();
        });
        binding.etServer.setThreshold(1000);
        binding.btnServer.setOnClickListener(v -> {
            String server = binding.etServer.getText().toString();
            if (StringUtils.isEmpty(server)) {
                Toast.makeText(getContext(), "Server is required", Toast.LENGTH_SHORT).show();
                return;
            }
            Global.saveServer(server, binding.etDeviceLabel.getText().toString());
            binding.etServer.setSimpleItems(Global.getServers().toArray(new String[0]));

            ModifierService modifierService = ModifierService.getInstance();
            if (modifierService != null) {
                modifierService.connect();
            }

            Utils.makeLoadingButton(getContext(), binding.btnServer);
            binding.btnServer.setEnabled(false);
            handler.postDelayed(() -> {
                binding.btnServer.setIconResource(R.drawable.ic_done);
                binding.btnServer.setText("OK");
                handler.postDelayed(() -> {
                    binding.btnServer.setEnabled(true);
                    binding.btnServer.setIcon(null);
                    binding.btnServer.setText("Save");
                }, 1500);
            }, 500);
        });

        binding.btnRequest.setOnClickListener(v -> {

            Utils.makeLoadingButton(getContext(), binding.btnRequest);
            binding.btnRequest.setEnabled(false);
            executor.submit(() -> {
                try {

                    RequestQueue queue = Volley.newRequestQueue(getContext());
                    RequestFuture<JSONObject> future = RequestFuture.newFuture();
                    JsonObjectRequest request = new JsonObjectRequest(Request.Method.PUT, Global.serverUrl + "/api/rcs-number", null, future, future);
                    queue.add(request);

                    JSONObject jsonObject = future.get(60, TimeUnit.SECONDS);
                    Integer id = jsonObject.getInt("id");
                    String expiryTimeStr = jsonObject.getString("expiryTime");
                    Instant expiryTime = Instant.parse(expiryTimeStr);
                    String number = jsonObject.getString("number");
                    String mcc = jsonObject.getString("mcc");
                    String mnc = jsonObject.getString("mnc");
                    String country = jsonObject.getString("country");
                    String iccid = RandomStringUtils.randomNumeric(20);
                    String imsi = mcc + mnc + RandomStringUtils.randomNumeric(15 - mcc.length() - mnc.length());
                    String imei = Utils.generateIMEI();
                    Global.save(new TelephonyConfig(number, mcc, mnc, iccid, imsi, imei, country));

                    Global.stop(false, true, true);

                    handler.post(() -> {
                        TelephonyConfig telephonyConfig = Global.telephonyConfig;
                        binding.etNumber.setText(telephonyConfig.getNumber());
                        binding.etMcc.setText(telephonyConfig.getMcc());
                        binding.etMnc.setText(telephonyConfig.getMnc());
                        binding.etIccid.setText(telephonyConfig.getIccid());
                        binding.etImsi.setText(telephonyConfig.getImsi());
                        binding.etImei.setText(telephonyConfig.getImei());
                        binding.etCountry.setText(telephonyConfig.getCountry());
                        binding.btnRequest.setText("Waiting for OTP...");
                    });

                    try {
                        Utils.runAsRoot("am start -a android.intent.action.MAIN -c android.intent.category.LAUNCHER com.google.android.apps.messaging");
                        Thread.sleep(1000);
                        Utils.runAsRoot("am start com.google.android.apps.messaging/com.google.android.apps.messaging.ui.appsettings.SettingsActivity;");
                        Utils.runAsRoot("am start com.google.android.apps.messaging/com.google.android.apps.messaging.ui.appsettings.RcsSettingsActivity;");
                        Thread.sleep(1000);
                        Intent intent = new Intent(getContext(), MainActivity.class);
                        intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
                        startActivity(intent);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                    boolean success = false;
                    while (Instant.now().isBefore(expiryTime)) {
                        try {
                            Log.i("SettingsFragment", "Waiting for OTP...");
                            RequestFuture<JSONObject> future1 = RequestFuture.newFuture();
                            JsonObjectRequest request1 = new JsonObjectRequest(Request.Method.GET, Global.serverUrl + "/api/rcs-number/" + id, null, future1, future1);
                            queue.add(request1);
                            JSONObject jsonObject1 = null;
                            try {
                                jsonObject1 = future1.get(60, TimeUnit.SECONDS);
                            } catch (Exception e) {
                                e.printStackTrace();
                            }
                            if (jsonObject1 == null) {
                                continue;
                            }
                            String status = jsonObject1.optString("status");
                            if ("success".equals(status)) {
                                String message = jsonObject1.optString("message");
                                Matcher matcher = Pattern.compile("Your Messenger verification code is G-(\\d{6})")
                                        .matcher(message);
                                if (matcher.find()) {
                                    String otp = matcher.group(1);
                                    Intent intent = new Intent();
                                    intent.setAction("com.example.modifier.sms");
                                    intent.putExtra("sender", "3538");
                                    intent.putExtra("message", "Your Messenger verification code is G-" + otp);
                                    getContext().sendBroadcast(intent);
                                    success = true;
                                    break;
                                }
                            }
                            Thread.sleep(2000);
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }

                    if (!success) {
                        handler.post(() -> {
                            new MaterialAlertDialogBuilder(getContext())
                                    .setTitle("Error")
                                    .setMessage("Failed to get OTP")
                                    .setPositiveButton("OK", (dialog, which) -> {
                                        dialog.dismiss();
                                    })
                                    .show();
                        });
                    } else {
                        handler.post(() -> {
                            new MaterialAlertDialogBuilder(getContext())
                                    .setTitle("Success")
                                    .setMessage("OTP sent successfully")
                                    .setPositiveButton("OK", (dialog, which) -> {
                                        dialog.dismiss();
                                    })
                                    .show();
                        });
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }

                handler.post(() -> {
                    binding.btnRequest.setEnabled(true);
                    binding.btnRequest.setIcon(null);
                    binding.btnRequest.setText("Request");
                });
            });
        });

        executor.execute(() -> {
            Global.load();
            handler.post(() -> {
                binding.etServer.setText(Global.serverUrl);
                binding.etServer.setSimpleItems(Global.getServers().toArray(new String[0]));
                binding.etDeviceLabel.setText(Global.name);
                TelephonyConfig telephonyConfig = Global.telephonyConfig;
                binding.etNumber.setText(telephonyConfig.getNumber());
                binding.etMcc.setText(telephonyConfig.getMcc());
                binding.etMnc.setText(telephonyConfig.getMnc());
                binding.etIccid.setText(telephonyConfig.getIccid());
                binding.etImsi.setText(telephonyConfig.getImsi());
                binding.etImei.setText(telephonyConfig.getImei());
                binding.etCountry.setText(telephonyConfig.getCountry());
            });
        });

        return binding.getRoot();
    }

    private void onSave() {
        Utils.makeLoadingButton(getContext(), binding.btnSave);
        binding.btnSave.setEnabled(false);
        executor.execute(() -> {
            save();
            handler.post(() -> {
                binding.btnSave.setIconResource(R.drawable.ic_done);
                binding.btnSave.setText("OK");
                handler.postDelayed(() -> {
                    binding.btnSave.setEnabled(true);
                    binding.btnSave.setIcon(null);
                    binding.btnSave.setText("Save");
                }, 1500);
            });
        });
    }

    private void save() {
        try {
            TelephonyConfig telephonyConfig = new TelephonyConfig(binding.etNumber.getText().toString(),
                    binding.etMcc.getText().toString(),
                    binding.etMnc.getText().toString(),
                    binding.etIccid.getText().toString(),
                    binding.etImsi.getText().toString(),
                    binding.etImei.getText().toString(),
                    binding.etCountry.getText().toString());
            File file = new File(ContextCompat.getDataDir(getContext()), "config.json");
            Gson gson = new Gson();
            String json = gson.toJson(telephonyConfig);

            try {
                FileWriter writer = new FileWriter(file);
                writer.write(json);
                writer.close();
            } catch (Exception e) {
                e.printStackTrace();
            }

            Utils.runAsRoot(
                    "cp " + file.getPath() + " /data/data/com.android.phone/rcsConfig.json",
                    "echo 'copied to phone'",
                    "chmod 777 /data/data/com.android.phone/rcsConfig.json");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}