Added an option to export or import the app data

app/src/main/assets/app/applySettings.js

@@ -22,9 +22,12 @@ function handleStorageChange(event) {
             break;
         case 'selectedMainWeatherProvider':
             setTimeout(() => {
-           window.location.reload();
-           sendThemeToAndroid('overcast')
-           }, 1500);
+                if(localStorage.getItem('selectedMainWeatherProvider') === 'Accuweather' && !localStorage.getItem('ApiForAccu')){
+                } else{
+                    window.location.reload();
+                    sendThemeToAndroid('overcast')
+                }
+            }, 1500);
             break;
         case 'ApiForAccu':
             setTimeout(() => {
@@ -53,14 +56,18 @@ window.addEventListener('storage', handleStorageChange);
 
 // apply when options are changed
 
-function HandleNoReloadSettings() {
+let debounceTimer;
 
-    const renderLocation = localStorage.getItem('CurrentLocationName')
-        setTimeout(() =>{
-            LoadLocationOnRequest(localStorage.getItem('currentLat'), localStorage.getItem('currentLong'), renderLocation)
-           onAllLocationsLoaded()
-        }, 300);
-    }
+function HandleNoReloadSettings() {
+    const renderLocation = localStorage.getItem('CurrentLocationName');
+
+    clearTimeout(debounceTimer);
+
+    debounceTimer = setTimeout(() => {
+        LoadLocationOnRequest(localStorage.getItem('currentLat'), localStorage.getItem('currentLong'), renderLocation);
+        onAllLocationsLoaded();
+    }, 500);
+}
 
 
 function RemoveDisplayedAnimations() {

app/src/main/assets/pages/settings.html

@@ -324,6 +324,20 @@
                     <md-icon icon-outlined slot="end">open_in_new</md-icon>
                 </md-list-item>
 
+                <md-list-item type="button" id="exportAppData">
+                    <md-icon icon-filled slot="start">upgrade</md-icon>
+                    <div slot="headline">Export data</div>
+                    <div slot="supporting-text">Export all your settings, locations, and their last fetched weather data—literally everything!</div>
+                </md-list-item>
+
+
+                <md-list-item type="button" id="importAppData">
+                    <md-icon icon-filled slot="start">download</md-icon>
+                    <div slot="headline">Import data</div>
+                    <div slot="supporting-text" style="color: var(--Error);">Warning: Importing will erase your current app data</div>
+                </md-list-item>
+                <input type="file" id="ImportFile" style="display:none;" accept="application/json">
+
             </md-list>
 
 
@@ -1093,6 +1107,59 @@ function ChangeSelectedMainProviderName() {
                 } else{
                     document.getElementById('useWeatherAlerts').selected = true
                 }
+
+                document.getElementById("exportAppData").addEventListener("click", () => {
+
+
+
+    const data = { ...localStorage };
+
+    // Check if local storage has data
+    if (Object.keys(data).length > 0) {
+        // Convert data to JSON string
+        const jsonData = JSON.stringify(data, null, 2);
+
+        // Use Android interface to save the file
+        Android.saveFile(jsonData);
+    } else {
+        // Show toast message if no data is found
+        ShowSnackMessage.ShowSnack("No data found", "short");
+    }
+});
+
+document.getElementById('importAppData').addEventListener('click', () => {
+    Android.importFile();
+});
+
+function handleImportedData(importedData) {
+    try {
+        const data = JSON.parse(importedData);
+
+        if (typeof data !== "object" || data === null) {
+            throw new Error("Invalid data format");
+        }
+
+        localStorage.clear();
+
+
+      setTimeout(() => {
+        for (const [key, value] of Object.entries(data)) {
+            localStorage.setItem(key, value);
+
+        }
+        ShowSnackMessage.ShowSnack("Data imported successfully!", "short");
+
+}, 1000);
+      setTimeout(() => {
+      Android.reloadTheApp();
+}, 1500);
+
+    } catch (error) {
+        ShowSnackMessage.ShowSnack("Error parsing the imported JSON data. Please ensure it is valid and correctly formatted.", "long");
+        console.error(error);
+    }
+}
+
     </script>
 </script>
 

app/src/main/java/com/example/weathermaster/SettingsActivity.java

@@ -21,6 +21,8 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.webkit.JavascriptInterface;
+import android.webkit.ValueCallback;
+import android.webkit.WebChromeClient;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
@@ -30,6 +32,7 @@ import android.widget.Toast;
 
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.app.ActivityCompat;
@@ -38,9 +41,26 @@ import androidx.core.content.res.ResourcesCompat;
 
 import com.google.android.material.snackbar.Snackbar;
 
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStream;
+
 public class SettingsActivity extends AppCompatActivity {
 
     private WebView webview;
+
+    private ValueCallback<Uri[]> filePathCallback;
+    private final static int FILECHOOSER_RESULTCODE = 1;
+    private final static int EXPORT_REQUEST_CODE = 2;
+    private static final int PERMISSION_REQUEST_CODE = 1;
+    private static final int SAVE_DOCUMENT_REQUEST_CODE = 2;
+    private static final int IMPORT_REQUEST_CODE = 3;
+
+    private String dataToSave;
     private boolean isFirstLoad = true;
 
     public void onBackPressed() {
@@ -75,6 +95,7 @@ public class SettingsActivity extends AppCompatActivity {
         webview.addJavascriptInterface(androidInterface, "AndroidInterface");
         webview.addJavascriptInterface(new ShowToastInterface(this), "ToastAndroidShow");
         webview.addJavascriptInterface(new ShowSnackInterface(this), "ShowSnackMessage");
+        webview.addJavascriptInterface(new WebAppInterface(), "Android");
         webview.setBackgroundColor(getResources().getColor(R.color.yellowBg));
 
         webview.loadUrl("file:///android_asset/pages/settings.html");
@@ -107,12 +128,141 @@ public class SettingsActivity extends AppCompatActivity {
                     webview.evaluateJavascript(jsCodePrimaryColor, null);
                 }
             }
-        });
 
+        });
+        }
+
+
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
+        if (requestCode == FILECHOOSER_RESULTCODE) {
+            if (filePathCallback != null) {
+                Uri[] results = null;
+                if (resultCode == RESULT_OK && data != null) {
+                    String dataString = data.getDataString();
+                    if (dataString != null) {
+                        results = new Uri[]{Uri.parse(dataString)};
+                    }
+                }
+                filePathCallback.onReceiveValue(results);
+                filePathCallback = null;
+            }
+        } else if (requestCode == SAVE_DOCUMENT_REQUEST_CODE) {
+            if (resultCode == RESULT_OK && data != null && data.getData() != null) {
+                saveToUri(data.getData());
+            } else {
+                Toast.makeText(this, "Error exporting", Toast.LENGTH_SHORT).show();
+            }
+        } else if (requestCode == IMPORT_REQUEST_CODE) {
+            if (resultCode == RESULT_OK && data != null && data.getData() != null) {
+                importFromUri(data.getData());
+            } else {
+                Toast.makeText(this, "Error importing file", Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+
+
+    private void restartApp() {
+        Toast.makeText(this, "App is restarting...", Toast.LENGTH_SHORT).show();
+
+        Intent intent = new Intent(getApplicationContext(), MainActivity.class);
+
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
+
+        startActivity(intent);
+
+        finish();
 
     }
 
 
+
+    public class WebAppInterface {
+        @JavascriptInterface
+        public void saveFile(String data) {
+            dataToSave = data;
+            openFilePickerExport();
+        }
+
+        @JavascriptInterface
+        public void importFile() {
+            openFilePickerImport();  // Open file picker for importing JSON data
+        }
+
+        @JavascriptInterface
+        public void reloadTheApp() {
+            restartApp();  // Open file picker for importing JSON data
+        }
+    }
+
+
+
+
+
+    private void openFilePickerExport() {
+        Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
+        intent.addCategory(Intent.CATEGORY_OPENABLE);
+        intent.setType("application/json");
+        intent.putExtra(Intent.EXTRA_TITLE, "WeatherMasterData.json");
+        startActivityForResult(intent, SAVE_DOCUMENT_REQUEST_CODE);
+    }
+
+    private void openFilePickerImport() {
+        Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
+        intent.addCategory(Intent.CATEGORY_OPENABLE);
+        intent.setType("application/json");
+        startActivityForResult(intent, IMPORT_REQUEST_CODE);
+    }
+
+    private void importFromUri(Uri uri) {
+        try {
+            InputStream inputStream = getContentResolver().openInputStream(uri);
+            if (inputStream != null) {
+                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
+                StringBuilder stringBuilder = new StringBuilder();
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    stringBuilder.append(line);
+                }
+                reader.close();
+                inputStream.close();
+
+                String importedData = stringBuilder.toString();
+
+                String escapedData = importedData.replace("'", "\\'").replace("\"", "\\\"");
+
+                runOnUiThread(() -> {
+                    String jsCode = "handleImportedData('" + escapedData + "');";
+                    webview.evaluateJavascript(jsCode, null);
+                });
+            }
+        } catch (Exception e) {
+            Toast.makeText(this, "Error reading file", Toast.LENGTH_LONG).show();
+            e.printStackTrace();
+        }
+    }
+
+
+
+    private void saveToUri(Uri uri) {
+        try {
+            OutputStream outputStream = getContentResolver().openOutputStream(uri);
+            if (outputStream != null) {
+                outputStream.write(dataToSave.getBytes());
+                outputStream.close();
+                Toast.makeText(this, "Backup saved", Toast.LENGTH_SHORT).show();
+            } else {
+                Toast.makeText(this, "Error", Toast.LENGTH_SHORT).show();
+            }
+        } catch (Exception e) {
+            Toast.makeText(this, "Error saving file", Toast.LENGTH_LONG).show();
+            e.printStackTrace();
+        }
+    }
     private void requestNotificationPermissions() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
             if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.POST_NOTIFICATIONS)
@@ -201,6 +351,10 @@ public class SettingsActivity extends AppCompatActivity {
         }
     }
 
+//    export or import data
+
+
+
     public class AndroidInterface {
         private SettingsActivity sActivity;