app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionActivity.java

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.os.AsyncTask;
  21 import android.os.Bundle;
  22 import android.util.TypedValue;
  23 import android.view.Menu;
  24 import android.view.MenuItem;
  25 import android.view.View;
  26 import android.widget.ProgressBar;
  27
  28 import androidx.annotation.NonNull;
  29 import androidx.appcompat.widget.Toolbar;
  30 import androidx.lifecycle.Observer;
  31 import androidx.lifecycle.ViewModelProviders;
  32 import androidx.recyclerview.widget.ItemTouchHelper;
  33 import androidx.recyclerview.widget.LinearLayoutManager;
  34 import androidx.recyclerview.widget.RecyclerView;
  35
  36 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  37 import com.google.android.material.snackbar.BaseTransientBottomBar;
  38 import com.google.android.material.snackbar.Snackbar;
  39
  40 import net.ktnx.mobileledger.BuildConfig;
  41 import net.ktnx.mobileledger.R;
  42 import net.ktnx.mobileledger.async.SendTransactionTask;
  43 import net.ktnx.mobileledger.async.TaskCallback;
  44 import net.ktnx.mobileledger.model.Data;
  45 import net.ktnx.mobileledger.model.LedgerTransaction;
  46 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  47
  48 import java.util.Date;
  49 import java.util.Objects;
  50
  51 import static net.ktnx.mobileledger.utils.Logger.debug;
  52
  53 /*
  54  * TODO: nicer progress while transaction is submitted
  55  * TODO: reports
  56  * TODO: get rid of the custom session/cookie and auth code?
  57  *         (the last problem with the POST was the missing content-length header)
  58  *  */
  59
  60 public class NewTransactionActivity extends ProfileThemedActivity implements TaskCallback {
  61     private static SendTransactionTask saver;
  62     private ProgressBar progress;
  63     private FloatingActionButton fab;
  64     private NewTransactionItemsAdapter listAdapter;
  65     private NewTransactionModel viewModel;
  66     private RecyclerView list;
  67     @Override
  68     protected void onCreate(Bundle savedInstanceState) {
  69         super.onCreate(savedInstanceState);
  70
  71         setContentView(R.layout.activity_new_transaction);
  72         Toolbar toolbar = findViewById(R.id.toolbar);
  73         setSupportActionBar(toolbar);
  74         Data.profile.observe(this,
  75                 mobileLedgerProfile -> toolbar.setSubtitle(mobileLedgerProfile.getName()));
  76
  77         progress = findViewById(R.id.save_transaction_progress);
  78         fab = findViewById(R.id.fab);
  79         fab.setOnClickListener(v -> saveTransaction());
  80
  81         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
  82         list = findViewById(R.id.new_transaction_accounts);
  83         viewModel = ViewModelProviders.of(this).get(NewTransactionModel.class);
  84         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
  85         list.setAdapter(listAdapter);
  86         list.setLayoutManager(new LinearLayoutManager(this));
  87         Data.profile.observe(this, profile -> listAdapter.setProfile(profile));
  88         listAdapter.notifyDataSetChanged();
  89         new ItemTouchHelper(new ItemTouchHelper.Callback() {
  90             @Override
  91             public int getMovementFlags(@NonNull RecyclerView recyclerView,
  92                                         @NonNull RecyclerView.ViewHolder viewHolder) {
  93                 int flags = makeFlag(ItemTouchHelper.ACTION_STATE_IDLE, ItemTouchHelper.END);
  94                 // the top item is always there (date and description)
  95                 if (viewHolder.getAdapterPosition() > 0) {
  96                     if (viewModel.getAccountCount() > 2) {
  97                         flags |= makeFlag(ItemTouchHelper.ACTION_STATE_SWIPE,
  98                                 ItemTouchHelper.START | ItemTouchHelper.END);
  99                     }
 100                 }
 101
 102                 return flags;
 103             }
 104             @Override
 105             public boolean onMove(@NonNull RecyclerView recyclerView,
 106                                   @NonNull RecyclerView.ViewHolder viewHolder,
 107                                   @NonNull RecyclerView.ViewHolder target) {
 108                 return false;
 109             }
 110             @Override
 111             public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
 112                 if (viewModel.getAccountCount() == 2)
 113                     Snackbar.make(list, R.string.msg_at_least_two_accounts_are_required,
 114                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 115                 else {
 116                     int pos = viewHolder.getAdapterPosition();
 117                     viewModel.removeItem(pos - 1);
 118                     listAdapter.notifyItemRemoved(pos);
 119                     viewModel.sendCountNotifications(); // needed after items re-arrangement
 120                     viewModel.checkTransactionSubmittable(listAdapter);
 121                 }
 122             }
 123         }).attachToRecyclerView(list);
 124
 125         viewModel.isSubmittable().observe(this, new Observer<Boolean>() {
 126             @Override
 127             public void onChanged(Boolean isSubmittable) {
 128                 if (isSubmittable) {
 129                     if (fab != null) {
 130                         fab.show();
 131                         fab.setEnabled(true);
 132                     }
 133                 }
 134                 else {
 135                     if (fab != null) {
 136                         fab.hide();
 137                     }
 138                 }
 139             }
 140         });
 141         viewModel.checkTransactionSubmittable(listAdapter);
 142     }
 143     @Override
 144     protected void initProfile() {
 145         String profileUUID = getIntent().getStringExtra("profile_uuid");
 146
 147         if (profileUUID != null) {
 148             mProfile = Data.getProfile(profileUUID);
 149             if (mProfile == null) finish();
 150             Data.setCurrentProfile(mProfile);
 151         }
 152         else super.initProfile();
 153     }
 154     @Override
 155     public void finish() {
 156         super.finish();
 157         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 158     }
 159     @Override
 160     public boolean onOptionsItemSelected(MenuItem item) {
 161         switch (item.getItemId()) {
 162             case android.R.id.home:
 163                 finish();
 164                 return true;
 165         }
 166         return super.onOptionsItemSelected(item);
 167     }
 168     @Override
 169     protected void onStart() {
 170         super.onStart();
 171         // FIXME if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 172     }
 173     public void saveTransaction() {
 174         if (fab != null) fab.setEnabled(false);
 175         listAdapter.toggleAllEditing(false);
 176         progress.setVisibility(View.VISIBLE);
 177         try {
 178
 179             saver = new SendTransactionTask(this, mProfile);
 180
 181             Date date = viewModel.getDate();
 182             LedgerTransaction tr =
 183                     new LedgerTransaction(null, date, viewModel.getDescription(),
 184                             mProfile);
 185
 186             LedgerTransactionAccount emptyAmountAccount = null;
 187             float emptyAmountAccountBalance = 0;
 188             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 189                 LedgerTransactionAccount acc = viewModel.getAccount(i);
 190                 if (acc.getAccountName().trim().isEmpty()) continue;
 191
 192                 if (acc.isAmountSet()) {
 193                     emptyAmountAccountBalance += acc.getAmount();
 194                 }
 195                 else {
 196                     emptyAmountAccount = acc;
 197                 }
 198
 199                 tr.addAccount(acc);
 200             }
 201
 202             if (emptyAmountAccount != null)
 203                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 204             saver.execute(tr);
 205         }
 206         catch (Exception e) {
 207             debug("new-transaction", "Unknown error", e);
 208
 209             progress.setVisibility(View.GONE);
 210             listAdapter.toggleAllEditing(true);
 211             if (fab != null) fab.setEnabled(true);
 212         }
 213     }
 214     public void simulateCrash(MenuItem item) {
 215         debug("crash", "Will crash intentionally");
 216         new AsyncCrasher().execute();
 217     }
 218     public boolean onCreateOptionsMenu(Menu menu) {
 219         // Inflate the menu; this adds items to the action bar if it is present.
 220         getMenuInflater().inflate(R.menu.new_transaction, menu);
 221
 222         if (BuildConfig.DEBUG) {
 223             menu.findItem(R.id.action_simulate_crash).setVisible(true);
 224         }
 225
 226         return true;
 227     }
 228
 229
 230     public int dp2px(float dp) {
 231         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 232                 getResources().getDisplayMetrics()));
 233     }
 234     public void resetTransactionFromMenu(MenuItem item) {
 235         resetForm();
 236     }
 237     @Override
 238     public void done(String error) {
 239         progress.setVisibility(View.INVISIBLE);
 240         debug("visuals", "hiding progress");
 241
 242         if (error == null) resetForm();
 243         else Snackbar.make(list, error, BaseTransientBottomBar.LENGTH_LONG).show();
 244
 245         listAdapter.toggleAllEditing(true);
 246         viewModel.checkTransactionSubmittable(listAdapter);
 247     }
 248
 249     private void resetForm() {
 250         listAdapter.reset();
 251     }
 252     private class AsyncCrasher extends AsyncTask<Void, Void, Void> {
 253         @Override
 254         protected Void doInBackground(Void... voids) {
 255             throw new RuntimeException("Simulated crash");
 256         }
 257     }
 258
 259 }