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())
  82                .setDisplayHomeAsUpEnabled(true);
  83         list = findViewById(R.id.new_transaction_accounts);
  84         viewModel = ViewModelProviders.of(this)
  85                                       .get(NewTransactionModel.class);
  86         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
  87         list.setAdapter(listAdapter);
  88         list.setLayoutManager(new LinearLayoutManager(this));
  89         Data.profile.observe(this, profile -> listAdapter.setProfile(profile));
  90         listAdapter.notifyDataSetChanged();
  91         new ItemTouchHelper(new ItemTouchHelper.Callback() {
  92             @Override
  93             public int getMovementFlags(@NonNull RecyclerView recyclerView,
  94                                         @NonNull RecyclerView.ViewHolder viewHolder) {
  95                 int flags = makeFlag(ItemTouchHelper.ACTION_STATE_IDLE, ItemTouchHelper.END);
  96                 // the top item is always there (date and description)
  97                 if (viewHolder.getAdapterPosition() > 0) {
  98                     if (viewModel.getAccountCount() > 2) {
  99                         flags |= makeFlag(ItemTouchHelper.ACTION_STATE_SWIPE,
 100                                 ItemTouchHelper.START | ItemTouchHelper.END);
 101                     }
 102                 }
 103
 104                 return flags;
 105             }
 106             @Override
 107             public boolean onMove(@NonNull RecyclerView recyclerView,
 108                                   @NonNull RecyclerView.ViewHolder viewHolder,
 109                                   @NonNull RecyclerView.ViewHolder target) {
 110                 return false;
 111             }
 112             @Override
 113             public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
 114                 if (viewModel.getAccountCount() == 2)
 115                     Snackbar.make(list, R.string.msg_at_least_two_accounts_are_required,
 116                             Snackbar.LENGTH_LONG)
 117                             .setAction("Action", null)
 118                             .show();
 119                 else {
 120                     int pos = viewHolder.getAdapterPosition();
 121                     viewModel.removeItem(pos - 1);
 122                     listAdapter.notifyItemRemoved(pos);
 123                     viewModel.sendCountNotifications(); // needed after items re-arrangement
 124                     viewModel.checkTransactionSubmittable(listAdapter);
 125                 }
 126             }
 127         }).attachToRecyclerView(list);
 128
 129         viewModel.isSubmittable()
 130                  .observe(this, new Observer<Boolean>() {
 131                      @Override
 132                      public void onChanged(Boolean isSubmittable) {
 133                          if (isSubmittable) {
 134                              if (fab != null) {
 135                                  fab.show();
 136                                  fab.setEnabled(true);
 137                              }
 138                          }
 139                          else {
 140                              if (fab != null) {
 141                                  fab.hide();
 142                              }
 143                          }
 144                      }
 145                  });
 146         viewModel.checkTransactionSubmittable(listAdapter);
 147     }
 148     @Override
 149     protected void initProfile() {
 150         String profileUUID = getIntent().getStringExtra("profile_uuid");
 151
 152         if (profileUUID != null) {
 153             mProfile = Data.getProfile(profileUUID);
 154             if (mProfile == null) finish();
 155             Data.setCurrentProfile(mProfile);
 156         }
 157         else super.initProfile();
 158     }
 159     @Override
 160     public void finish() {
 161         super.finish();
 162         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 163     }
 164     @Override
 165     public boolean onOptionsItemSelected(MenuItem item) {
 166         switch (item.getItemId()) {
 167             case android.R.id.home:
 168                 finish();
 169                 return true;
 170         }
 171         return super.onOptionsItemSelected(item);
 172     }
 173     @Override
 174     protected void onStart() {
 175         super.onStart();
 176         // FIXME if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 177     }
 178     public void saveTransaction() {
 179         if (fab != null) fab.setEnabled(false);
 180         listAdapter.toggleAllEditing(false);
 181         progress.setVisibility(View.VISIBLE);
 182         try {
 183
 184             saver = new SendTransactionTask(this, mProfile);
 185
 186             Date date = viewModel.getDate();
 187             LedgerTransaction tr =
 188                     new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
 189
 190             LedgerTransactionAccount emptyAmountAccount = null;
 191             float emptyAmountAccountBalance = 0;
 192             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 193                 LedgerTransactionAccount acc = viewModel.getAccount(i);
 194                 if (acc.getAccountName()
 195                        .trim()
 196                        .isEmpty()) 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) fab.setEnabled(true);
 218         }
 219     }
 220     public void simulateCrash(MenuItem item) {
 221         debug("crash", "Will crash intentionally");
 222         new AsyncCrasher().execute();
 223     }
 224     public boolean onCreateOptionsMenu(Menu menu) {
 225         // Inflate the menu; this adds items to the action bar if it is present.
 226         getMenuInflater().inflate(R.menu.new_transaction, menu);
 227
 228         if (BuildConfig.DEBUG) {
 229             menu.findItem(R.id.action_simulate_crash)
 230                 .setVisible(true);
 231         }
 232
 233         return true;
 234     }
 235
 236
 237     public int dp2px(float dp) {
 238         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 239                 getResources().getDisplayMetrics()));
 240     }
 241     public void resetTransactionFromMenu(MenuItem item) {
 242         resetForm();
 243     }
 244     @Override
 245     public void done(String error) {
 246         progress.setVisibility(View.INVISIBLE);
 247         debug("visuals", "hiding progress");
 248
 249         if (error == null) resetForm();
 250         else Snackbar.make(list, error, BaseTransientBottomBar.LENGTH_LONG)
 251                      .show();
 252
 253         listAdapter.toggleAllEditing(true);
 254         viewModel.checkTransactionSubmittable(listAdapter);
 255     }
 256
 257     private void resetForm() {
 258         listAdapter.reset();
 259     }
 260     private class AsyncCrasher extends AsyncTask<Void, Void, Void> {
 261         @Override
 262         protected Void doInBackground(Void... voids) {
 263             throw new RuntimeException("Simulated crash");
 264         }
 265     }
 266
 267 }