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.ViewModelProviders;
  31 import androidx.recyclerview.widget.ItemTouchHelper;
  32 import androidx.recyclerview.widget.LinearLayoutManager;
  33 import androidx.recyclerview.widget.RecyclerView;
  34
  35 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  36 import com.google.android.material.snackbar.BaseTransientBottomBar;
  37 import com.google.android.material.snackbar.Snackbar;
  38
  39 import net.ktnx.mobileledger.BuildConfig;
  40 import net.ktnx.mobileledger.R;
  41 import net.ktnx.mobileledger.async.SendTransactionTask;
  42 import net.ktnx.mobileledger.async.TaskCallback;
  43 import net.ktnx.mobileledger.model.Data;
  44 import net.ktnx.mobileledger.model.LedgerTransaction;
  45 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  46
  47 import java.util.Date;
  48 import java.util.Objects;
  49
  50 import static net.ktnx.mobileledger.utils.Logger.debug;
  51
  52 /*
  53  * TODO: nicer progress while transaction is submitted
  54  * TODO: reports
  55  * TODO: get rid of the custom session/cookie and auth code?
  56  *         (the last problem with the POST was the missing content-length header)
  57  *  */
  58
  59 public class NewTransactionActivity extends ProfileThemedActivity implements TaskCallback {
  60     private static SendTransactionTask saver;
  61     private ProgressBar progress;
  62     private FloatingActionButton fab;
  63     private NewTransactionItemsAdapter listAdapter;
  64     private NewTransactionModel viewModel;
  65     private RecyclerView list;
  66     @Override
  67     protected void onCreate(Bundle savedInstanceState) {
  68         super.onCreate(savedInstanceState);
  69
  70         setContentView(R.layout.activity_new_transaction);
  71         Toolbar toolbar = findViewById(R.id.toolbar);
  72         setSupportActionBar(toolbar);
  73         Data.profile.observe(this,
  74                 mobileLedgerProfile -> toolbar.setSubtitle(mobileLedgerProfile.getName()));
  75
  76         progress = findViewById(R.id.save_transaction_progress);
  77         fab = findViewById(R.id.fab);
  78         fab.setOnClickListener(v -> saveTransaction());
  79
  80         Objects.requireNonNull(getSupportActionBar())
  81                .setDisplayHomeAsUpEnabled(true);
  82         list = findViewById(R.id.new_transaction_accounts);
  83         viewModel = ViewModelProviders.of(this)
  84                                       .get(NewTransactionModel.class);
  85         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
  86         list.setAdapter(listAdapter);
  87         list.setLayoutManager(new LinearLayoutManager(this));
  88         Data.profile.observe(this, profile -> listAdapter.setProfile(profile));
  89         listAdapter.notifyDataSetChanged();
  90         new ItemTouchHelper(new ItemTouchHelper.Callback() {
  91             @Override
  92             public int getMovementFlags(@NonNull RecyclerView recyclerView,
  93                                         @NonNull RecyclerView.ViewHolder viewHolder) {
  94                 int flags = makeFlag(ItemTouchHelper.ACTION_STATE_IDLE, ItemTouchHelper.END);
  95                 // the top item is always there (date and description)
  96                 if (viewHolder.getAdapterPosition() > 0) {
  97                     if (viewModel.getAccountCount() > 2) {
  98                         flags |= makeFlag(ItemTouchHelper.ACTION_STATE_SWIPE,
  99                                 ItemTouchHelper.START | ItemTouchHelper.END);
 100                     }
 101                 }
 102
 103                 return flags;
 104             }
 105             @Override
 106             public boolean onMove(@NonNull RecyclerView recyclerView,
 107                                   @NonNull RecyclerView.ViewHolder viewHolder,
 108                                   @NonNull RecyclerView.ViewHolder target) {
 109                 return false;
 110             }
 111             @Override
 112             public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
 113                 if (viewModel.getAccountCount() == 2)
 114                     Snackbar.make(list, R.string.msg_at_least_two_accounts_are_required,
 115                             Snackbar.LENGTH_LONG)
 116                             .setAction("Action", null)
 117                             .show();
 118                 else {
 119                     int pos = viewHolder.getAdapterPosition();
 120                     viewModel.removeItem(pos - 1);
 121                     listAdapter.notifyItemRemoved(pos);
 122                     viewModel.sendCountNotifications(); // needed after items re-arrangement
 123                     viewModel.checkTransactionSubmittable(listAdapter);
 124                 }
 125             }
 126         }).attachToRecyclerView(list);
 127
 128         viewModel.isSubmittable()
 129                  .observe(this, isSubmittable -> {
 130                      if (isSubmittable) {
 131                          if (fab != null) {
 132                              fab.show();
 133                              fab.setEnabled(true);
 134                          }
 135                      }
 136                      else {
 137                          if (fab != null) {
 138                              fab.hide();
 139                          }
 140                      }
 141                  });
 142         viewModel.checkTransactionSubmittable(listAdapter);
 143     }
 144     @Override
 145     protected void initProfile() {
 146         String profileUUID = getIntent().getStringExtra("profile_uuid");
 147
 148         if (profileUUID != null) {
 149             mProfile = Data.getProfile(profileUUID);
 150             if (mProfile == null)
 151                 finish();
 152             Data.setCurrentProfile(mProfile);
 153         }
 154         else
 155             super.initProfile();
 156     }
 157     @Override
 158     public void finish() {
 159         super.finish();
 160         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 161     }
 162     @Override
 163     public boolean onOptionsItemSelected(MenuItem item) {
 164         switch (item.getItemId()) {
 165             case android.R.id.home:
 166                 finish();
 167                 return true;
 168         }
 169         return super.onOptionsItemSelected(item);
 170     }
 171     @Override
 172     protected void onStart() {
 173         super.onStart();
 174         // FIXME if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 175     }
 176     public void saveTransaction() {
 177         if (fab != null)
 178             fab.setEnabled(false);
 179         listAdapter.toggleAllEditing(false);
 180         progress.setVisibility(View.VISIBLE);
 181         try {
 182
 183             saver = new SendTransactionTask(this, mProfile);
 184
 185             Date date = viewModel.getDate();
 186             LedgerTransaction tr =
 187                     new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
 188
 189             LedgerTransactionAccount emptyAmountAccount = null;
 190             float emptyAmountAccountBalance = 0;
 191             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 192                 LedgerTransactionAccount acc = viewModel.getAccount(i);
 193                 if (acc.getAccountName()
 194                        .trim()
 195                        .isEmpty())
 196                     continue;
 197
 198                 if (acc.isAmountSet()) {
 199                     emptyAmountAccountBalance += acc.getAmount();
 200                 }
 201                 else {
 202                     emptyAmountAccount = acc;
 203                 }
 204
 205                 tr.addAccount(acc);
 206             }
 207
 208             if (emptyAmountAccount != null)
 209                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 210             saver.execute(tr);
 211         }
 212         catch (Exception e) {
 213             debug("new-transaction", "Unknown error", e);
 214
 215             progress.setVisibility(View.GONE);
 216             listAdapter.toggleAllEditing(true);
 217             if (fab != null)
 218                 fab.setEnabled(true);
 219         }
 220     }
 221     public void simulateCrash(MenuItem item) {
 222         debug("crash", "Will crash intentionally");
 223         new AsyncCrasher().execute();
 224     }
 225     public boolean onCreateOptionsMenu(Menu menu) {
 226         // Inflate the menu; this adds items to the action bar if it is present.
 227         getMenuInflater().inflate(R.menu.new_transaction, menu);
 228
 229         if (BuildConfig.DEBUG) {
 230             menu.findItem(R.id.action_simulate_crash)
 231                 .setVisible(true);
 232         }
 233
 234         return true;
 235     }
 236
 237
 238     public int dp2px(float dp) {
 239         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 240                 getResources().getDisplayMetrics()));
 241     }
 242     public void resetTransactionFromMenu(MenuItem item) {
 243         listAdapter.reset();
 244     }
 245     @Override
 246     public void done(String error) {
 247         progress.setVisibility(View.INVISIBLE);
 248         debug("visuals", "hiding progress");
 249
 250         if (error == null)
 251             listAdapter.reset();
 252         else
 253             Snackbar.make(list, error, BaseTransientBottomBar.LENGTH_LONG)
 254                     .show();
 255
 256         listAdapter.toggleAllEditing(true);
 257
 258         viewModel.checkTransactionSubmittable(listAdapter);
 259     }
 260
 261     private class AsyncCrasher extends AsyncTask<Void, Void, Void> {
 262         @Override
 263         protected Void doInBackground(Void... voids) {
 264             throw new RuntimeException("Simulated crash");
 265         }
 266     }
 267
 268 }