feat: convert accounts mvp to mvvm architecture

app/build.gradle

@@ -162,6 +162,8 @@ dependencies {
     //exoplayer
     implementation 'com.google.android.exoplayer:exoplayer:r1.5.7'
 
+    implementation "androidx.lifecycle:lifecycle-extensions:$rootProject.lifecycleVersion"
+
     //utils
     implementation 'com.github.deano2390:MaterialShowcaseView:1.2.0@aar'
     implementation "com.jakewharton:butterknife:$rootProject.butterknifeVersion"

app/src/main/java/org/fossasia/phimpme/accounts/AccountRepository.java

@@ -0,0 +1,44 @@
+package org.fossasia.phimpme.accounts;
+
+import io.realm.Realm;
+import io.realm.RealmQuery;
+import org.fossasia.phimpme.data.local.AccountDatabase;
+import org.fossasia.phimpme.data.local.DatabaseHelper;
+
+/** Created by @codedsun on 09/Oct/2019 */
+class AccountRepository {
+
+  private Realm realm = Realm.getDefaultInstance();
+  private DatabaseHelper databaseHelper = new DatabaseHelper(realm);
+
+  // Fetches the details of all accounts
+  RealmQuery<AccountDatabase> fetchAllAccounts() {
+    return databaseHelper.fetchAccountDetails();
+  }
+
+  // saves username, password and serverUrl for an account in database
+  void saveUsernamePasswordServerUrlForAccount(
+      AccountDatabase.AccountName accountName, String serverUrl, String username, String password) {
+    realm.beginTransaction();
+    AccountDatabase account = realm.createObject(AccountDatabase.class, accountName.toString());
+    account.setServerUrl(serverUrl);
+    account.setUsername(username);
+    account.setPassword(password);
+    realm.commitTransaction();
+  }
+
+  // saves username and token for an account in database
+  void saveUsernameAndToken(
+      AccountDatabase.AccountName accountName, String username, String token) {
+    realm.beginTransaction();
+    AccountDatabase account = realm.createObject(AccountDatabase.class, accountName.toString());
+    account.setUsername(username);
+    account.setToken(token);
+    realm.commitTransaction();
+  }
+
+  // deletes an account from database
+  void deleteAccount(String accountName) {
+    databaseHelper.deleteSignedOutAccount(accountName);
+  }
+}

app/src/main/java/org/fossasia/phimpme/accounts/AccountViewModel.java

@@ -0,0 +1,72 @@
+package org.fossasia.phimpme.accounts;
+
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+import io.realm.RealmQuery;
+import org.fossasia.phimpme.data.local.AccountDatabase;
+
+/** Created by @codedsun on 09/Oct/2019 */
+public class AccountViewModel extends ViewModel {
+
+  final int NEXTCLOUD_REQUEST_CODE = 3;
+  final int OWNCLOUD_REQUEST_CODE = 9;
+  final int RESULT_OK = 1;
+
+  private AccountRepository accountRepository = new AccountRepository();
+  MutableLiveData<Boolean> error = new MutableLiveData<>();
+  MutableLiveData<RealmQuery<AccountDatabase>> accountDetails = new MutableLiveData<>();
+
+  public AccountViewModel() {}
+
+  // Used to fetch all the current logged in accounts
+  void fetchAccountDetails() {
+    RealmQuery<AccountDatabase> accountDetails = accountRepository.fetchAllAccounts();
+    if (accountDetails.findAll().size() > 0) {
+      this.accountDetails.postValue(accountDetails);
+    } else {
+      error.postValue(true);
+    }
+  }
+
+  // used to save nextcloud or owncloud details
+  void saveOwnCloudOrNextCloudToken(
+      int requestCode, String serverUrl, String userName, String password) {
+    switch (requestCode) {
+      case NEXTCLOUD_REQUEST_CODE:
+        accountRepository.saveUsernamePasswordServerUrlForAccount(
+            AccountDatabase.AccountName.NEXTCLOUD, serverUrl, userName, password);
+        break;
+
+      case OWNCLOUD_REQUEST_CODE:
+        accountRepository.saveUsernamePasswordServerUrlForAccount(
+            AccountDatabase.AccountName.OWNCLOUD, serverUrl, userName, password);
+        break;
+    }
+  }
+
+  // to save dropbox details
+  void saveDropboxToken(String token) {
+    accountRepository.saveUsernameAndToken(
+        AccountDatabase.AccountName.DROPBOX, AccountDatabase.AccountName.DROPBOX.toString(), token);
+  }
+
+  // to save box details
+  void saveBoxToken(String username, String token) {
+    accountRepository.saveUsernameAndToken(AccountDatabase.AccountName.BOX, username, token);
+  }
+
+  // to save pintrest details
+  void savePinterestToken(String username) {
+    accountRepository.saveUsernameAndToken(AccountDatabase.AccountName.PINTEREST, username, "");
+  }
+
+  // to delete a specific account from database
+  void deleteAccountFromDatabase(String accountName) {
+    accountRepository.deleteAccount(accountName);
+  }
+
+  // to save imgur account details
+  void saveImgurAccount(String username, String token) {
+    accountRepository.saveUsernameAndToken(AccountDatabase.AccountName.IMGUR, username, token);
+  }
+}

build.gradle

@@ -52,6 +52,7 @@ ext {
     stethoVersion = "1.5.0"
     showcaseVersion = "5.4.3"
     nextCloudVersion = "1.5.0"
+    lifecycleVersion = "2.1.0"
     glideVersion = "4.10.0"
 }