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                 if (viewModel.getAccountCount() > 2) flags |=
  95                         makeFlag(ItemTouchHelper.ACTION_STATE_SWIPE,
  96                                 ItemTouchHelper.START | ItemTouchHelper.END);
  97                 return flags;
  98             }
  99             @Override
 100             public boolean onMove(@NonNull RecyclerView recyclerView,
 101                                   @NonNull RecyclerView.ViewHolder viewHolder,
 102                                   @NonNull RecyclerView.ViewHolder target) {
 103                 return false;
 104             }
 105             @Override
 106             public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
 107                 if (viewModel.getAccountCount() == 2)
 108                     Snackbar.make(list, R.string.msg_at_least_two_accounts_are_required,
 109                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 110                 else {
 111                     int pos = viewHolder.getAdapterPosition();
 112                     listAdapter.removeItem(pos);
 113                     // FIXME hook next/prev links somehow
 114                     throw new RuntimeException("TODO");
 115                 }
 116             }
 117         }).attachToRecyclerView(list);
 118
 119         viewModel.isSubmittable().observe(this, new Observer<Boolean>() {
 120             @Override
 121             public void onChanged(Boolean isSubmittable) {
 122                 if (isSubmittable) {
 123                     if (fab != null) {
 124                         fab.show();
 125                         fab.setEnabled(true);
 126                     }
 127                 }
 128                 else {
 129                     if (fab != null) {
 130                         fab.hide();
 131                     }
 132                 }
 133             }
 134         });
 135         viewModel.checkTransactionSubmittable(listAdapter);
 136     }
 137     @Override
 138     protected void initProfile() {
 139         String profileUUID = getIntent().getStringExtra("profile_uuid");
 140
 141         if (profileUUID != null) {
 142             mProfile = Data.getProfile(profileUUID);
 143             if (mProfile == null) finish();
 144         }
 145         else super.initProfile();
 146     }
 147     @Override
 148     public void finish() {
 149         super.finish();
 150         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 151     }
 152     @Override
 153     public boolean onOptionsItemSelected(MenuItem item) {
 154         switch (item.getItemId()) {
 155             case android.R.id.home:
 156                 finish();
 157                 return true;
 158         }
 159         return super.onOptionsItemSelected(item);
 160     }
 161     @Override
 162     protected void onStart() {
 163         super.onStart();
 164         // FIXME if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 165     }
 166     public void saveTransaction() {
 167         if (fab != null) fab.setEnabled(false);
 168         listAdapter.toggleAllEditing(false);
 169         progress.setVisibility(View.VISIBLE);
 170         try {
 171
 172             saver = new SendTransactionTask(this, mProfile);
 173
 174             Date date = viewModel.getDate();
 175             LedgerTransaction tr =
 176                     new LedgerTransaction(null, date, viewModel.getDescription(),
 177                             mProfile);
 178
 179             LedgerTransactionAccount emptyAmountAccount = null;
 180             float emptyAmountAccountBalance = 0;
 181             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 182                 LedgerTransactionAccount acc = viewModel.getAccount(i);
 183                 if (acc.getAccountName().trim().isEmpty()) continue;
 184
 185                 if (acc.isAmountSet()) {
 186                     emptyAmountAccountBalance += acc.getAmount();
 187                 }
 188                 else {
 189                     emptyAmountAccount = acc;
 190                 }
 191
 192                 tr.addAccount(acc);
 193             }
 194
 195             if (emptyAmountAccount != null)
 196                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 197             saver.execute(tr);
 198         }
 199         catch (Exception e) {
 200             debug("new-transaction", "Unknown error", e);
 201
 202             progress.setVisibility(View.GONE);
 203             listAdapter.toggleAllEditing(true);
 204             if (fab != null) fab.setEnabled(true);
 205         }
 206     }
 207     public void simulateCrash(MenuItem item) {
 208         debug("crash", "Will crash intentionally");
 209         new AsyncCrasher().execute();
 210     }
 211     public boolean onCreateOptionsMenu(Menu menu) {
 212         // Inflate the menu; this adds items to the action bar if it is present.
 213         getMenuInflater().inflate(R.menu.new_transaction, menu);
 214
 215         if (BuildConfig.DEBUG) {
 216             menu.findItem(R.id.action_simulate_crash).setVisible(true);
 217         }
 218
 219         return true;
 220     }
 221
 222
 223     public int dp2px(float dp) {
 224         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 225                 getResources().getDisplayMetrics()));
 226     }
 227     public void resetTransactionFromMenu(MenuItem item) {
 228         resetForm();
 229     }
 230     @Override
 231     public void done(String error) {
 232         progress.setVisibility(View.INVISIBLE);
 233         debug("visuals", "hiding progress");
 234
 235         if (error == null) resetForm();
 236         else Snackbar.make(list, error, BaseTransientBottomBar.LENGTH_LONG).show();
 237
 238         listAdapter.toggleAllEditing(true);
 239         viewModel.checkTransactionSubmittable(listAdapter);
 240     }
 241
 242     private void resetForm() {
 243         listAdapter.reset();
 244     }
 245     private class AsyncCrasher extends AsyncTask<Void, Void, Void> {
 246         @Override
 247         protected Void doInBackground(Void... voids) {
 248             throw new RuntimeException("Simulated crash");
 249         }
 250     }
 251
 252 }