ManageSpaceActivity: convert to Kotlin while we're here

Signed-off-by: Álvaro Brey Vilas <alvaro.brey@nextcloud.com>

src/main/java/com/owncloud/android/ui/activity/ManageSpaceActivity.java

@@ -1,190 +0,0 @@
-/*
- *   ownCloud Android client application
- *
- *   @author masensio
- *   Copyright (C) 2016 ownCloud Inc.
- *
- *   This program is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License version 2,
- *   as published by the Free Software Foundation.
- *
- *   This program 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 General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-package com.owncloud.android.ui.activity;
-
-import android.os.AsyncTask;
-import android.os.Bundle;
-import android.view.MenuItem;
-import android.view.View;
-import android.widget.Button;
-import android.widget.TextView;
-
-import com.google.android.material.snackbar.Snackbar;
-import com.nextcloud.client.account.UserAccountManager;
-import com.nextcloud.client.di.Injectable;
-import com.nextcloud.client.preferences.AppPreferences;
-import com.owncloud.android.R;
-import com.owncloud.android.lib.common.utils.Log_OC;
-
-import java.io.File;
-
-import javax.inject.Inject;
-
-import androidx.appcompat.app.ActionBar;
-import androidx.appcompat.app.AppCompatActivity;
-
-public class ManageSpaceActivity extends AppCompatActivity implements Injectable {
-
-    private static final String TAG = ManageSpaceActivity.class.getSimpleName();
-    private static final String LIB_FOLDER = "lib";
-
-    @Inject AppPreferences preferences;
-    @Inject UserAccountManager accountManager;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_manage_space);
-
-        ActionBar actionBar = getSupportActionBar();
-        if (actionBar != null) {
-            actionBar.setDisplayHomeAsUpEnabled(true);
-            actionBar.setTitle(R.string.manage_space_title);
-        }
-
-        TextView descriptionTextView = findViewById(R.id.general_description);
-        descriptionTextView.setText(getString(R.string.manage_space_description, getString(R.string.app_name)));
-
-        Button clearDataButton = findViewById(R.id.clearDataButton);
-        clearDataButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                ClearDataAsyncTask clearDataTask = new ClearDataAsyncTask();
-                clearDataTask.execute();
-            }
-        });
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        boolean retval = true;
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                finish();
-                break;
-            default:
-                Log_OC.w(TAG, "Unknown menu item triggered");
-                retval =  super.onOptionsItemSelected(item);
-                break;
-        }
-        return retval;
-    }
-
-    /**
-     * AsyncTask for Clear Data, saving the passcode
-     */
-    private class ClearDataAsyncTask extends AsyncTask<Void, Void, Boolean>{
-
-        private final AppPreferences preferences = ManageSpaceActivity.this.preferences;
-        private final UserAccountManager userAccountManager = ManageSpaceActivity.this.accountManager;
-
-        @Override
-        protected Boolean doInBackground(Void... params) {
-
-            String lockPref = preferences.getLockPreference();
-            boolean passCodeEnable = SettingsActivity.LOCK_PASSCODE.equals(lockPref);
-
-            String passCodeDigits[] = new String[4];
-            if (passCodeEnable) {
-                passCodeDigits = preferences.getPassCode();
-            }
-
-            // Clear data
-            preferences.clear();
-            boolean result = clearApplicationData();
-
-            // Recover passcode
-            if (passCodeEnable) {
-                preferences.setPassCode(
-                    passCodeDigits[0],
-                    passCodeDigits[1],
-                    passCodeDigits[2],
-                    passCodeDigits[3]
-                );
-            }
-
-            preferences.setLockPreference(lockPref);
-            userAccountManager.removeAllAccounts();
-
-            return result;
-        }
-
-        @Override
-        protected void onPostExecute(Boolean result) {
-            super.onPostExecute(result);
-            if (!result) {
-                Snackbar.make(
-                        findViewById(android.R.id.content),
-                        R.string.manage_space_clear_data,
-                        Snackbar.LENGTH_LONG
-                ).show();
-            } else {
-                finishAndRemoveTask();
-                System.exit(0);
-            }
-        }
-
-        public boolean clearApplicationData() {
-            boolean clearResult = true;
-            File appDir = new File(getCacheDir().getParent());
-            if (appDir.exists()) {
-                String[] children = appDir.list();
-                if (children != null) {
-                    for (String s : children) {
-                        if (!LIB_FOLDER.equals(s)) {
-                            File fileToDelete = new File(appDir, s);
-                            clearResult = clearResult && deleteDir(fileToDelete);
-                            Log_OC.d(TAG, "Clear Application Data, File: " + fileToDelete.getName() + " DELETED *****");
-                        }
-                    }
-                } else {
-                    clearResult = false;
-                }
-            }
-            return  clearResult;
-        }
-
-        public boolean deleteDir(File dir) {
-            if (dir != null && dir.isDirectory()) {
-                String[] children = dir.list();
-                if (children != null) {
-                    for (String child : children) {
-                        boolean success = deleteDir(new File(dir, child));
-                        if (!success) {
-                            Log_OC.w(TAG, "File NOT deleted " + child);
-                            return false;
-                        } else {
-                            Log_OC.d(TAG, "File deleted " + child);
-                        }
-                    }
-                } else {
-                    return false;
-                }
-            }
-
-            if (dir != null) {
-                return dir.delete();
-            } else {
-                return false;
-            }
-        }
-    }
-}

src/main/java/com/owncloud/android/ui/activity/ManageSpaceActivity.kt

@@ -0,0 +1,162 @@
+/*
+ *   ownCloud Android client application
+ *
+ *   @author masensio
+ *   Copyright (C) 2016 ownCloud Inc.
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License version 2,
+ *   as published by the Free Software Foundation.
+ *
+ *   This program 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 General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.owncloud.android.ui.activity
+
+import android.os.AsyncTask
+import android.os.Bundle
+import android.view.MenuItem
+import android.widget.Button
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import com.google.android.material.snackbar.Snackbar
+import com.nextcloud.client.account.UserAccountManager
+import com.nextcloud.client.di.Injectable
+import com.nextcloud.client.preferences.AppPreferences
+import com.owncloud.android.R
+import com.owncloud.android.lib.common.utils.Log_OC
+import java.io.File
+import javax.inject.Inject
+import kotlin.system.exitProcess
+
+class ManageSpaceActivity : AppCompatActivity(), Injectable {
+
+    @Inject
+    lateinit var preferences: AppPreferences
+
+    @Inject
+    lateinit var userAccountManager: UserAccountManager
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_manage_space)
+        val actionBar = supportActionBar
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(true)
+            actionBar.setTitle(R.string.manage_space_title)
+        }
+        val descriptionTextView = findViewById<TextView>(R.id.general_description)
+        descriptionTextView.text = getString(R.string.manage_space_description, getString(R.string.app_name))
+        val clearDataButton = findViewById<Button>(R.id.clearDataButton)
+        clearDataButton.setOnClickListener {
+            val clearDataTask = ClearDataAsyncTask()
+            clearDataTask.execute()
+        }
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        var retval = true
+        when (item.itemId) {
+            android.R.id.home -> finish()
+            else -> {
+                Log_OC.w(TAG, "Unknown menu item triggered")
+                retval = super.onOptionsItemSelected(item)
+            }
+        }
+        return retval
+    }
+
+    /**
+     * AsyncTask for Clear Data, saving the passcode
+     */
+    private inner class ClearDataAsyncTask : AsyncTask<Void, Void, Boolean>() {
+        private val preferences = this@ManageSpaceActivity.preferences
+        private val userAccountManager = this@ManageSpaceActivity.userAccountManager
+
+        @Suppress("MagicNumber")
+        override fun doInBackground(vararg params: Void): Boolean {
+            val lockPref = preferences.lockPreference
+            val passCodeEnable = SettingsActivity.LOCK_PASSCODE == lockPref
+            var passCodeDigits = arrayOfNulls<String>(4)
+            if (passCodeEnable) {
+                passCodeDigits = preferences.passCode
+            }
+
+            // Clear data
+            preferences.clear()
+            val result = clearApplicationData()
+
+            // Recover passcode
+            if (passCodeEnable) {
+                preferences.setPassCode(
+                    passCodeDigits[0],
+                    passCodeDigits[1],
+                    passCodeDigits[2],
+                    passCodeDigits[3]
+                )
+            }
+            preferences.lockPreference = lockPref
+            userAccountManager.removeAllAccounts()
+            return result
+        }
+
+        override fun onPostExecute(result: Boolean) {
+            super.onPostExecute(result)
+            if (!result) {
+                Snackbar.make(
+                    findViewById(android.R.id.content),
+                    R.string.manage_space_clear_data,
+                    Snackbar.LENGTH_LONG
+                ).show()
+            } else {
+                finishAndRemoveTask()
+                exitProcess(0)
+            }
+        }
+
+        fun clearApplicationData(): Boolean {
+            var clearResult = true
+            val appDir = File(cacheDir.parent!!)
+            if (appDir.exists()) {
+                val children = appDir.list()
+                if (children != null) {
+                    children.filter { it != LIB_FOLDER }.forEach { s ->
+                        val fileToDelete = File(appDir, s)
+                        clearResult = clearResult && deleteDir(fileToDelete)
+                        Log_OC.d(TAG, "Clear Application Data, File: " + fileToDelete.name + " DELETED *****")
+                    }
+                } else {
+                    clearResult = false
+                }
+            }
+            return clearResult
+        }
+
+        @Suppress("ReturnCount")
+        fun deleteDir(dir: File?): Boolean {
+            if (dir != null && dir.isDirectory) {
+                dir.list()?.forEach { child ->
+                    val success = deleteDir(File(dir, child))
+                    if (!success) {
+                        Log_OC.w(TAG, "File NOT deleted $child")
+                        return false
+                    } else {
+                        Log_OC.d(TAG, "File deleted $child")
+                    }
+                } ?: return false
+            }
+            return dir?.delete() ?: false
+        }
+    }
+
+    companion object {
+        private val TAG = ManageSpaceActivity::class.java.simpleName
+        private const val LIB_FOLDER = "lib"
+    }
+}