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

   1 /*
   2  * Copyright © 2021 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.app.Activity;
  21 import android.content.Context;
  22 import android.content.Intent;
  23 import android.content.res.Resources;
  24 import android.os.Bundle;
  25 import android.renderscript.RSInvalidStateException;
  26 import android.view.LayoutInflater;
  27 import android.view.Menu;
  28 import android.view.MenuInflater;
  29 import android.view.MenuItem;
  30 import android.view.View;
  31 import android.view.ViewGroup;
  32 import android.widget.ProgressBar;
  33
  34 import androidx.activity.result.ActivityResultLauncher;
  35 import androidx.activity.result.contract.ActivityResultContract;
  36 import androidx.annotation.NonNull;
  37 import androidx.annotation.Nullable;
  38 import androidx.appcompat.app.AlertDialog;
  39 import androidx.fragment.app.Fragment;
  40 import androidx.fragment.app.FragmentActivity;
  41 import androidx.lifecycle.ViewModelProvider;
  42 import androidx.recyclerview.widget.LinearLayoutManager;
  43 import androidx.recyclerview.widget.RecyclerView;
  44
  45 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  46 import com.google.android.material.snackbar.Snackbar;
  47
  48 import net.ktnx.mobileledger.R;
  49 import net.ktnx.mobileledger.json.API;
  50 import net.ktnx.mobileledger.model.Data;
  51 import net.ktnx.mobileledger.model.LedgerTransaction;
  52 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  53 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  54 import net.ktnx.mobileledger.utils.Logger;
  55 import net.ktnx.mobileledger.utils.Misc;
  56 import net.ktnx.mobileledger.utils.SimpleDate;
  57
  58 import org.jetbrains.annotations.NotNull;
  59
  60 import java.util.regex.Matcher;
  61 import java.util.regex.Pattern;
  62
  63 /**
  64  * A simple {@link Fragment} subclass.
  65  * Activities that contain this fragment must implement the
  66  * {@link OnNewTransactionFragmentInteractionListener} interface
  67  * to handle interaction events.
  68  */
  69
  70 // TODO: offer to undo account remove-on-swipe
  71
  72 public class NewTransactionFragment extends Fragment {
  73     private NewTransactionItemsAdapter listAdapter;
  74     private NewTransactionModel viewModel;
  75     final ActivityResultLauncher<Void> scanQrLauncher =
  76             registerForActivityResult(new ActivityResultContract<Void, String>() {
  77                 @NonNull
  78                 @Override
  79                 public Intent createIntent(@NonNull Context context, Void input) {
  80                     final Intent intent = new Intent("com.google.zxing.client.android.SCAN");
  81                     intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
  82                     return intent;
  83                 }
  84                 @Override
  85                 public String parseResult(int resultCode, @Nullable Intent intent) {
  86                     if (resultCode == Activity.RESULT_CANCELED)
  87                         return null;
  88                     return intent.getStringExtra("SCAN_RESULT");
  89                 }
  90             }, this::onQrScanned);
  91     private FloatingActionButton fab;
  92     private OnNewTransactionFragmentInteractionListener mListener;
  93     private MobileLedgerProfile mProfile;
  94     public NewTransactionFragment() {
  95         // Required empty public constructor
  96         setHasOptionsMenu(true);
  97     }
  98     private void onQrScanned(String text) {
  99         Logger.debug("qr", String.format("Got QR scan result [%s]", text));
 100         Pattern p =
 101                 Pattern.compile("^(\\d+)\\*(\\d+)\\*(\\d+)-(\\d+)-(\\d+)\\*([:\\d]+)\\*([\\d.]+)$");
 102         Matcher m = p.matcher(text);
 103         if (m.matches()) {
 104             float amount = Float.parseFloat(m.group(7));
 105             viewModel.setDate(
 106                     new SimpleDate(Integer.parseInt(m.group(3)), Integer.parseInt(m.group(4)),
 107                             Integer.parseInt(m.group(5))));
 108
 109             if (viewModel.accountsInInitialState()) {
 110                 {
 111                     NewTransactionModel.Item firstItem = viewModel.getItem(1);
 112                     if (firstItem == null) {
 113                         viewModel.addAccount(new LedgerTransactionAccount("разход:пазар"));
 114                         listAdapter.notifyItemInserted(viewModel.items.size() - 1);
 115                     }
 116                     else {
 117                         firstItem.setAccountName("разход:пазар");
 118                         firstItem.getAccount()
 119                                  .resetAmount();
 120                         listAdapter.notifyItemChanged(1);
 121                     }
 122                 }
 123                 {
 124                     NewTransactionModel.Item secondItem = viewModel.getItem(2);
 125                     if (secondItem == null) {
 126                         viewModel.addAccount(
 127                                 new LedgerTransactionAccount("актив:кеш:дам", -amount, null, null));
 128                         listAdapter.notifyItemInserted(viewModel.items.size() - 1);
 129                     }
 130                     else {
 131                         secondItem.setAccountName("актив:кеш:дам");
 132                         secondItem.getAccount()
 133                                   .setAmount(-amount);
 134                         listAdapter.notifyItemChanged(2);
 135                     }
 136                 }
 137             }
 138             else {
 139                 viewModel.addAccount(new LedgerTransactionAccount("разход:пазар"));
 140                 viewModel.addAccount(
 141                         new LedgerTransactionAccount("актив:кеш:дам", -amount, null, null));
 142                 listAdapter.notifyItemRangeInserted(viewModel.items.size() - 1, 2);
 143             }
 144
 145             listAdapter.checkTransactionSubmittable();
 146         }
 147     }
 148     @Override
 149     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
 150         super.onCreateOptionsMenu(menu, inflater);
 151         final FragmentActivity activity = getActivity();
 152
 153         inflater.inflate(R.menu.new_transaction_fragment, menu);
 154
 155         menu.findItem(R.id.scan_qr)
 156             .setOnMenuItemClickListener(this::onScanQrAction);
 157
 158         menu.findItem(R.id.action_reset_new_transaction_activity)
 159             .setOnMenuItemClickListener(item -> {
 160                 listAdapter.reset();
 161                 return true;
 162             });
 163
 164         final MenuItem toggleCurrencyItem = menu.findItem(R.id.toggle_currency);
 165         toggleCurrencyItem.setOnMenuItemClickListener(item -> {
 166             viewModel.toggleCurrencyVisible();
 167             return true;
 168         });
 169         if (activity != null)
 170             viewModel.showCurrency.observe(activity, toggleCurrencyItem::setChecked);
 171
 172         final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
 173         toggleCommentsItem.setOnMenuItemClickListener(item -> {
 174             viewModel.toggleShowComments();
 175             return true;
 176         });
 177         if (activity != null)
 178             viewModel.showComments.observe(activity, toggleCommentsItem::setChecked);
 179     }
 180     private boolean onScanQrAction(MenuItem item) {
 181         try {
 182             scanQrLauncher.launch(null);
 183         }
 184         catch (Exception e) {
 185             Logger.debug("qr", "Error launching QR scanner", e);
 186         }
 187
 188         return true;
 189     }
 190     @Override
 191     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 192                              Bundle savedInstanceState) {
 193         // Inflate the layout for this fragment
 194         return inflater.inflate(R.layout.fragment_new_transaction, container, false);
 195     }
 196
 197     @Override
 198     public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
 199         super.onViewCreated(view, savedInstanceState);
 200         FragmentActivity activity = getActivity();
 201         if (activity == null)
 202             throw new RSInvalidStateException(
 203                     "getActivity() returned null within onActivityCreated()");
 204
 205         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 206         viewModel.observeDataProfile(this);
 207         mProfile = Data.getProfile();
 208         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 209
 210         RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
 211         list.setAdapter(listAdapter);
 212         list.setLayoutManager(new LinearLayoutManager(activity));
 213
 214         Data.observeProfile(getViewLifecycleOwner(), profile -> {
 215             mProfile = profile;
 216             listAdapter.setProfile(profile);
 217         });
 218         listAdapter.notifyDataSetChanged();
 219         viewModel.isSubmittable()
 220                  .observe(getViewLifecycleOwner(), isSubmittable -> {
 221                      if (isSubmittable) {
 222                          if (fab != null) {
 223                              fab.show();
 224                          }
 225                      }
 226                      else {
 227                          if (fab != null) {
 228                              fab.hide();
 229                          }
 230                      }
 231                  });
 232 //        viewModel.checkTransactionSubmittable(listAdapter);
 233
 234         fab = activity.findViewById(R.id.fab);
 235         fab.setOnClickListener(v -> onFabPressed());
 236
 237         boolean keep = false;
 238
 239         Bundle args = getArguments();
 240         if (args != null) {
 241             String error = args.getString("error");
 242             if (error != null) {
 243                 Logger.debug("new-trans-f", String.format("Got error: %s", error));
 244
 245                 Context context = getContext();
 246                 if (context != null) {
 247                     AlertDialog.Builder builder = new AlertDialog.Builder(context);
 248                     final Resources resources = context.getResources();
 249                     final StringBuilder message = new StringBuilder();
 250                     message.append(resources.getString(R.string.err_json_send_error_head));
 251                     message.append("\n\n");
 252                     message.append(error);
 253                     if (mProfile.getApiVersion()
 254                                 .equals(API.auto))
 255                         message.append(
 256                                 resources.getString(R.string.err_json_send_error_unsupported));
 257                     else {
 258                         message.append(resources.getString(R.string.err_json_send_error_tail));
 259                         builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
 260                             Logger.debug("error", "will start profile editor");
 261                             MobileLedgerProfile.startEditProfileActivity(context, mProfile);
 262                         });
 263                     }
 264                     builder.setMessage(message);
 265                     builder.create()
 266                            .show();
 267                 }
 268                 else {
 269                     Snackbar.make(list, error, Snackbar.LENGTH_INDEFINITE)
 270                             .show();
 271                 }
 272                 keep = true;
 273             }
 274         }
 275
 276         int focused = 0;
 277         if (savedInstanceState != null) {
 278             keep |= savedInstanceState.getBoolean("keep", true);
 279             focused = savedInstanceState.getInt("focused", 0);
 280         }
 281
 282         if (!keep)
 283             viewModel.reset();
 284         else {
 285             viewModel.setFocusedItem(focused);
 286         }
 287
 288         ProgressBar p = activity.findViewById(R.id.progressBar);
 289         viewModel.observeBusyFlag(getViewLifecycleOwner(), isBusy -> {
 290             if (isBusy) {
 291 //                Handler h = new Handler();
 292 //                h.postDelayed(() -> {
 293 //                    if (viewModel.getBusyFlag())
 294 //                        p.setVisibility(View.VISIBLE);
 295 //
 296 //                }, 10);
 297                 p.setVisibility(View.VISIBLE);
 298             }
 299             else
 300                 p.setVisibility(View.INVISIBLE);
 301         });
 302     }
 303     @Override
 304     public void onSaveInstanceState(@NonNull Bundle outState) {
 305         super.onSaveInstanceState(outState);
 306         outState.putBoolean("keep", true);
 307         final int focusedItem = viewModel.getFocusedItem();
 308         outState.putInt("focused", focusedItem);
 309     }
 310     private void onFabPressed() {
 311         fab.hide();
 312         Misc.hideSoftKeyboard(this);
 313         if (mListener != null) {
 314             SimpleDate date = viewModel.getDate();
 315             LedgerTransaction tr =
 316                     new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
 317
 318             tr.setComment(viewModel.getComment());
 319             LedgerTransactionAccount emptyAmountAccount = null;
 320             float emptyAmountAccountBalance = 0;
 321             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 322                 LedgerTransactionAccount acc =
 323                         new LedgerTransactionAccount(viewModel.getAccount(i));
 324                 if (acc.getAccountName()
 325                        .trim()
 326                        .isEmpty())
 327                     continue;
 328
 329                 if (acc.isAmountSet()) {
 330                     emptyAmountAccountBalance += acc.getAmount();
 331                 }
 332                 else {
 333                     emptyAmountAccount = acc;
 334                 }
 335
 336                 tr.addAccount(acc);
 337             }
 338
 339             if (emptyAmountAccount != null)
 340                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 341
 342             mListener.onTransactionSave(tr);
 343         }
 344     }
 345
 346     @Override
 347     public void onAttach(@NotNull Context context) {
 348         super.onAttach(context);
 349         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 350             mListener = (OnNewTransactionFragmentInteractionListener) context;
 351         }
 352         else {
 353             throw new RuntimeException(
 354                     context.toString() + " must implement OnFragmentInteractionListener");
 355         }
 356     }
 357
 358     @Override
 359     public void onDetach() {
 360         super.onDetach();
 361         mListener = null;
 362     }
 363
 364     /**
 365      * This interface must be implemented by activities that contain this
 366      * fragment to allow an interaction in this fragment to be communicated
 367      * to the activity and potentially other fragments contained in that
 368      * activity.
 369      * <p>
 370      * See the Android Training lesson <a href=
 371      * "http://developer.android.com/training/basics/fragments/communicating.html"
 372      * >Communicating with Other Fragments</a> for more information.
 373      */
 374     public interface OnNewTransactionFragmentInteractionListener {
 375         void onTransactionSave(LedgerTransaction tr);
 376     }
 377 }