/*  Copyright (C) 2024 Arjan Schrijver

    This file is part of Gadgetbridge.

    Gadgetbridge is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Gadgetbridge is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
package nodomain.freeyourgadget.gadgetbridge.util;

import android.Manifest;
import android.app.Activity;
import android.app.NotificationManager;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Build;
import android.provider.Settings;
import android.widget.Toast;

import androidx.core.app.ActivityCompat;
import androidx.core.app.NotificationManagerCompat;
import androidx.core.content.ContextCompat;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.Set;

import nodomain.freeyourgadget.gadgetbridge.BuildConfig;
import nodomain.freeyourgadget.gadgetbridge.R;

public class PermissionsUtils {
    private static final Logger LOG = LoggerFactory.getLogger(PermissionsUtils.class);

    private static final String CUSTOM_PERM_NOTIFICATION_LISTENER = "custom_perm_notifications_listener";
    private static final String CUSTOM_PERM_NOTIFICATION_SERVICE = "custom_perm_notifications_service";
    private static final String CUSTOM_PERM_DISPLAY_OVER = "custom_perm_display_over";

    public static ArrayList<PermissionDetails> getRequiredPermissionsList(Context context) {
        ArrayList<PermissionDetails> permissionsList = new ArrayList<>();
        permissionsList.add(new PermissionDetails(CUSTOM_PERM_NOTIFICATION_LISTENER, context.getString(R.string.menuitem_notifications), "Forwarding notifications to connected gadgets"));
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            permissionsList.add(new PermissionDetails(CUSTOM_PERM_NOTIFICATION_SERVICE, "Manage Do Not Disturb", "Change DND notification policy"));
            permissionsList.add(new PermissionDetails(CUSTOM_PERM_DISPLAY_OVER, "Display over other apps", "Used by Bangle.js to start apps and other functionality on your phone"));
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q && Build.VERSION.SDK_INT <= Build.VERSION_CODES.S) {
            permissionsList.add(new PermissionDetails(Manifest.permission.ACCESS_BACKGROUND_LOCATION, "Background location", "Required for scanning for Bluetooth devices"));
        }
        permissionsList.add(new PermissionDetails(Manifest.permission.ACCESS_FINE_LOCATION, "Fine location", "Send location to gadgets which don't have GPS"));
        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
            permissionsList.add(new PermissionDetails(Manifest.permission.BLUETOOTH, "Bluetooth", "Connect to Bluetooth devices"));
            permissionsList.add(new PermissionDetails(Manifest.permission.BLUETOOTH_ADMIN, "Bluetooth admin", "Discover and pair Bluetooth devices"));
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
            permissionsList.add(new PermissionDetails(Manifest.permission.BLUETOOTH_SCAN, "Bluetooth scan", "Scan for Bluetooth devices"));
            permissionsList.add(new PermissionDetails(Manifest.permission.BLUETOOTH_CONNECT, "Bluetooth connect", "Connect to Bluetooth devices"));
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
            permissionsList.add(new PermissionDetails(Manifest.permission.POST_NOTIFICATIONS, "Post notifications", "Post ongoing notification which keeps the service running"));
        }
        if (BuildConfig.INTERNET_ACCESS) {
            permissionsList.add(new PermissionDetails(Manifest.permission.INTERNET, "Internet access", "Synchronization with online resources"));
        }
        permissionsList.add(new PermissionDetails(Manifest.permission.MEDIA_CONTENT_CONTROL, "Media content control", "Read and control media playback"));
        permissionsList.add(new PermissionDetails(Manifest.permission.READ_CONTACTS, "Contacts", "Send contacts to gadgets"));
        permissionsList.add(new PermissionDetails(Manifest.permission.READ_CALENDAR, "Calendar", "Send calendar to gadgets"));
        permissionsList.add(new PermissionDetails(Manifest.permission.RECEIVE_SMS, "Receive SMS", "Forward SMS messages to gadgets"));
        permissionsList.add(new PermissionDetails(Manifest.permission.SEND_SMS, "Send SMS", "Send SMS (canned response) from gadgets"));
        permissionsList.add(new PermissionDetails(Manifest.permission.READ_CALL_LOG, "Read call log", "Forward call log to gadgets"));
        permissionsList.add(new PermissionDetails(Manifest.permission.READ_PHONE_STATE, "Read phone state", "Read status of ongoing calls"));
        permissionsList.add(new PermissionDetails(Manifest.permission.CALL_PHONE, "Call phone", "Initiate phone calls from gadgets"));
        permissionsList.add(new PermissionDetails(Manifest.permission.PROCESS_OUTGOING_CALLS, "Process outgoing calls", "Read the number of an outgoing call to display it on a gadget"));
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            permissionsList.add(new PermissionDetails(Manifest.permission.ANSWER_PHONE_CALLS, "Answer phone calls", "Answer phone calls from gadgets"));
        }
        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.S_V2) {
            permissionsList.add(new PermissionDetails(Manifest.permission.READ_EXTERNAL_STORAGE, "External storage", "Using images, ringtones, app files and more"));
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
            permissionsList.add(new PermissionDetails(Manifest.permission.QUERY_ALL_PACKAGES, "Query all packages", "Read names and icons of all installed apps"));
        }
        return permissionsList;
    }

    public static boolean checkPermission(Context context, String permission) {
        if (permission.equals(CUSTOM_PERM_NOTIFICATION_LISTENER)) {
            Set<String> set = NotificationManagerCompat.getEnabledListenerPackages(context);
            return set.contains(context.getPackageName());
        } else if (permission.equals(CUSTOM_PERM_NOTIFICATION_SERVICE) && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            return ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)).isNotificationPolicyAccessGranted();
        } else if (permission.equals(CUSTOM_PERM_DISPLAY_OVER) && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            return Settings.canDrawOverlays(context);
        } else {
            return ContextCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_DENIED;
        }
    }

    public static boolean checkAllPermissions(Context context) {
        boolean result = true;
        for (PermissionDetails permission : getRequiredPermissionsList(context)) {
            if (!checkPermission(context, permission.getPermission())) {
                result = false;
            }
        }
        return result;
    }

    public static void requestAllPermissions(Activity activity) {
    }

    public static void requestPermission(Activity activity, String permission) {
        if (permission.equals(CUSTOM_PERM_NOTIFICATION_LISTENER)) {
            try {
                activity.startActivity(new Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS"));
            } catch (ActivityNotFoundException e) {
                GB.toast(activity, "'Notification Listener Settings' activity not found", Toast.LENGTH_LONG, GB.ERROR);
            }
        } else if (permission.equals(CUSTOM_PERM_NOTIFICATION_SERVICE)) {
            try {
                activity.startActivity(new Intent(android.provider.Settings.ACTION_NOTIFICATION_POLICY_ACCESS_SETTINGS));
            } catch (ActivityNotFoundException e) {
                GB.toast(activity, "'Notification Policy' activity not found", Toast.LENGTH_LONG, GB.ERROR);
                LOG.error("'Notification Policy' activity not found");
            }
        } else if (permission.equals(CUSTOM_PERM_DISPLAY_OVER)) {
            activity.startActivity(new Intent(android.provider.Settings.ACTION_MANAGE_OVERLAY_PERMISSION));
        } else {
            ActivityCompat.requestPermissions(activity, new String[]{permission}, 0);
        }
    }

    public static class PermissionDetails {
        private String permission;
        private String title;
        private String summary;

        public PermissionDetails(String permission, String title, String summary) {
            this.permission = permission;
            this.title = title;
            this.summary = summary;
        }

        public String getPermission() {
            return permission;
        }
        public String getTitle() {
            return title;
        }
        public String getSummary() {
            return summary;
        }
    }

//    @TargetApi(Build.VERSION_CODES.M)
//    private List<String> getWantedPermissions() {
//        List<String> wantedPermissions = new ArrayList<>();
//
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.BLUETOOTH);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_ADMIN) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.BLUETOOTH_ADMIN);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.READ_CONTACTS);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.CALL_PHONE);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CALL_LOG) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.READ_CALL_LOG);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.READ_PHONE_STATE);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.PROCESS_OUTGOING_CALLS) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.PROCESS_OUTGOING_CALLS);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECEIVE_SMS) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.RECEIVE_SMS);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_SMS) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.READ_SMS);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.SEND_SMS) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.SEND_SMS);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.READ_EXTERNAL_STORAGE);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CALENDAR) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.READ_CALENDAR);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.ACCESS_FINE_LOCATION);
//        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_DENIED)
//            wantedPermissions.add(Manifest.permission.ACCESS_COARSE_LOCATION);
//
//        try {
//            if (ContextCompat.checkSelfPermission(this, Manifest.permission.MEDIA_CONTENT_CONTROL) == PackageManager.PERMISSION_DENIED)
//                wantedPermissions.add(Manifest.permission.MEDIA_CONTENT_CONTROL);
//        } catch (Exception ignored) {
//        }
//
//        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
//            if (pesterWithPermissions) {
//                if (ContextCompat.checkSelfPermission(this, Manifest.permission.ANSWER_PHONE_CALLS) == PackageManager.PERMISSION_DENIED) {
//                    wantedPermissions.add(Manifest.permission.ANSWER_PHONE_CALLS);
//                }
//            }
//        }
//
//        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q && Build.VERSION.SDK_INT <= Build.VERSION_CODES.S) {
//            if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_BACKGROUND_LOCATION) == PackageManager.PERMISSION_DENIED) {
//                wantedPermissions.add(Manifest.permission.ACCESS_BACKGROUND_LOCATION);
//            }
//            if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_DENIED) {
//                wantedPermissions.add(Manifest.permission.ACCESS_FINE_LOCATION);
//            }
//        }
//
//        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
//            if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.QUERY_ALL_PACKAGES) == PackageManager.PERMISSION_DENIED) {
//                wantedPermissions.add(Manifest.permission.QUERY_ALL_PACKAGES);
//            }
//        }
//
//        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
//            if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.BLUETOOTH_SCAN) == PackageManager.PERMISSION_DENIED) {
//                wantedPermissions.add(Manifest.permission.BLUETOOTH_SCAN);
//            }
//            if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.BLUETOOTH_CONNECT) == PackageManager.PERMISSION_DENIED) {
//                wantedPermissions.add(Manifest.permission.BLUETOOTH_CONNECT);
//            }
//        }
//
//        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
//            if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.POST_NOTIFICATIONS) == PackageManager.PERMISSION_DENIED) {
//                wantedPermissions.add(Manifest.permission.POST_NOTIFICATIONS);
//            }
//        }
//
//        if (BuildConfig.INTERNET_ACCESS) {
//            if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.INTERNET) == PackageManager.PERMISSION_DENIED) {
//                wantedPermissions.add(Manifest.permission.INTERNET);
//            }
//        }
//
//        return wantedPermissions;
//    }

//    @TargetApi(Build.VERSION_CODES.M)
//    private void checkAndRequestPermissions() {
//        List<String> wantedPermissions = getWantedPermissions();
//
//        if (!wantedPermissions.isEmpty()) {
//            Prefs prefs = GBApplication.getPrefs();
//            // If this is not the first run, we can rely on
//            // shouldShowRequestPermissionRationale(String permission)
//            // and ignore permissions that shouldn't or can't be requested again
//            if (prefs.getBoolean("permissions_asked", false)) {
//                // Don't request permissions that we shouldn't show a prompt for
//                // e.g. permissions that are "Never" granted by the user or never granted by the system
//                Set<String> shouldNotAsk = new HashSet<>();
//                for (String wantedPermission : wantedPermissions) {
//                    if (!shouldShowRequestPermissionRationale(wantedPermission)) {
//                        shouldNotAsk.add(wantedPermission);
//                    }
//                }
//                wantedPermissions.removeAll(shouldNotAsk);
//            } else {
//                // Permissions have not been asked yet, but now will be
//                prefs.getPreferences().edit().putBoolean("permissions_asked", true).apply();
//            }
//
//            if (!wantedPermissions.isEmpty()) {
//                GB.toast(this, getString(R.string.permission_granting_mandatory), Toast.LENGTH_LONG, GB.ERROR);
//                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.S) {
//                    ActivityCompat.requestPermissions(this, wantedPermissions.toArray(new String[0]), 0);
//                } else {
//                    requestMultiplePermissionsLauncher.launch(wantedPermissions.toArray(new String[0]));
//                }
//            }
//        }
//
//        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.S) { // The enclosed hack in it's current state cause crash on Banglejs builds tarkgetSDK=31 on a Android 13 device.
//            // HACK: On Lineage we have to do this so that the permission dialog pops up
//            if (fakeStateListener == null) {
//                fakeStateListener = new PhoneStateListener();
//                TelephonyManager telephonyManager = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
//                telephonyManager.listen(fakeStateListener, PhoneStateListener.LISTEN_CALL_STATE);
//                telephonyManager.listen(fakeStateListener, PhoneStateListener.LISTEN_NONE);
//            }
//        }
//    }

    /// Called from onCreate - this puts up a dialog explaining we need backgound location permissions, and then requests permissions when 'ok' pressed
//    public static class LocationPermissionsDialogFragment extends DialogFragment {
//        @Override
//        public Dialog onCreateDialog(Bundle savedInstanceState) {
//            // Use the Builder class for convenient dialog construction
//            MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(getActivity());
//            Context context = getContext();
//            builder.setMessage(context.getString(R.string.permission_location,
//                            getContext().getString(R.string.app_name),
//                            getContext().getString(R.string.ok)))
//                    .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
//                        public void onClick(DialogInterface dialog, int id) {
//                            Intent intent = new Intent(ACTION_REQUEST_LOCATION_PERMISSIONS);
//                            LocalBroadcastManager.getInstance(getContext()).sendBroadcast(intent);
//                        }
//                    });
//            return builder.create();
//        }
//    }

    // Register the permissions callback, which handles the user's response to the
    // system permissions dialog. Save the return value, an instance of
    // ActivityResultLauncher, as an instance variable.
    // This is required here rather than where it is used because it'll cause a
    // "LifecycleOwners must call register before they are STARTED" if not called from onCreate
//    public ActivityResultLauncher<String[]> requestMultiplePermissionsLauncher =
//            registerForActivityResult(new ActivityResultContracts.RequestMultiplePermissions(), isGranted -> {
//                if (isGranted.containsValue(true)) {
//                    // Permission is granted. Continue the action or workflow in your
//                    // app.
//                } else {
//                    // Explain to the user that the feature is unavailable because the
//                    // feature requires a permission that the user has denied. At the
//                    // same time, respect the user's decision. Don't link to system
//                    // settings in an effort to convince the user to change their
//                    // decision.
//                    GB.toast(this, getString(R.string.permission_granting_mandatory), Toast.LENGTH_LONG, GB.ERROR);
//                }
//            });

    /// Called from onCreate - this puts up a dialog explaining we need permissions, and then requests permissions when 'ok' pressed
//    public static class PermissionsDialogFragment extends DialogFragment {
//        @Override
//        public Dialog onCreateDialog(Bundle savedInstanceState) {
//            // Use the Builder class for convenient dialog construction
//            MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(getActivity());
//            Context context = getContext();
//            builder.setMessage(context.getString(R.string.permission_request,
//                            getContext().getString(R.string.app_name),
//                            getContext().getString(R.string.ok)))
//                    .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
//                        public void onClick(DialogInterface dialog, int id) {
//                            Intent intent = new Intent(ACTION_REQUEST_PERMISSIONS);
//                            LocalBroadcastManager.getInstance(getContext()).sendBroadcast(intent);
//                        }
//                    });
//            return builder.create();
//        }
//    }
}