app/src/main/java/net/ktnx/mobileledger/ui/new_transaction/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.new_transaction;
  19
  20 import android.content.Context;
  21 import android.content.res.Resources;
  22 import android.os.Bundle;
  23 import android.renderscript.RSInvalidStateException;
  24 import android.view.LayoutInflater;
  25 import android.view.Menu;
  26 import android.view.MenuInflater;
  27 import android.view.MenuItem;
  28 import android.view.View;
  29 import android.view.ViewGroup;
  30 import android.widget.ProgressBar;
  31
  32 import androidx.annotation.NonNull;
  33 import androidx.annotation.Nullable;
  34 import androidx.appcompat.app.AlertDialog;
  35 import androidx.fragment.app.Fragment;
  36 import androidx.fragment.app.FragmentActivity;
  37 import androidx.lifecycle.ViewModelProvider;
  38 import androidx.recyclerview.widget.LinearLayoutManager;
  39 import androidx.recyclerview.widget.RecyclerView;
  40
  41 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  42 import com.google.android.material.snackbar.Snackbar;
  43
  44 import net.ktnx.mobileledger.R;
  45 import net.ktnx.mobileledger.json.API;
  46 import net.ktnx.mobileledger.model.Data;
  47 import net.ktnx.mobileledger.model.LedgerTransaction;
  48 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  49 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  50 import net.ktnx.mobileledger.ui.QRScanAbleFragment;
  51 import net.ktnx.mobileledger.utils.Logger;
  52 import net.ktnx.mobileledger.utils.Misc;
  53 import net.ktnx.mobileledger.utils.SimpleDate;
  54
  55 import org.jetbrains.annotations.NotNull;
  56
  57 import java.util.regex.Matcher;
  58 import java.util.regex.Pattern;
  59
  60 /**
  61  * A simple {@link Fragment} subclass.
  62  * Activities that contain this fragment must implement the
  63  * {@link OnNewTransactionFragmentInteractionListener} interface
  64  * to handle interaction events.
  65  */
  66
  67 // TODO: offer to undo account remove-on-swipe
  68
  69 public class NewTransactionFragment extends QRScanAbleFragment {
  70     private NewTransactionItemsAdapter listAdapter;
  71     private NewTransactionModel viewModel;
  72     private FloatingActionButton fab;
  73     private OnNewTransactionFragmentInteractionListener mListener;
  74     private MobileLedgerProfile mProfile;
  75     public NewTransactionFragment() {
  76         // Required empty public constructor
  77         setHasOptionsMenu(true);
  78     }
  79     protected void onQrScanned(String text) {
  80         Logger.debug("qr", String.format("Got QR scan result [%s]", text));
  81         Pattern p =
  82                 Pattern.compile("^(\\d+)\\*(\\d+)\\*(\\d+)-(\\d+)-(\\d+)\\*([:\\d]+)\\*([\\d.]+)$");
  83         Matcher m = p.matcher(text);
  84         if (m.matches()) {
  85             float amount = Float.parseFloat(m.group(7));
  86             viewModel.setDate(
  87                     new SimpleDate(Integer.parseInt(m.group(3)), Integer.parseInt(m.group(4)),
  88                             Integer.parseInt(m.group(5))));
  89
  90             if (viewModel.accountsInInitialState()) {
  91                 {
  92                     NewTransactionModel.Item firstItem = viewModel.getItem(1);
  93                     if (firstItem == null) {
  94                         viewModel.addAccount(new LedgerTransactionAccount("разход:пазар"));
  95                         listAdapter.notifyItemInserted(viewModel.items.size() - 1);
  96                     }
  97                     else {
  98                         firstItem.setAccountName("разход:пазар");
  99                         firstItem.getAccount()
 100                                  .resetAmount();
 101                         listAdapter.notifyItemChanged(1);
 102                     }
 103                 }
 104                 {
 105                     NewTransactionModel.Item secondItem = viewModel.getItem(2);
 106                     if (secondItem == null) {
 107                         viewModel.addAccount(
 108                                 new LedgerTransactionAccount("актив:кеш:дам", -amount, null, null));
 109                         listAdapter.notifyItemInserted(viewModel.items.size() - 1);
 110                     }
 111                     else {
 112                         secondItem.setAccountName("актив:кеш:дам");
 113                         secondItem.getAccount()
 114                                   .setAmount(-amount);
 115                         listAdapter.notifyItemChanged(2);
 116                     }
 117                 }
 118             }
 119             else {
 120                 viewModel.addAccount(new LedgerTransactionAccount("разход:пазар"));
 121                 viewModel.addAccount(
 122                         new LedgerTransactionAccount("актив:кеш:дам", -amount, null, null));
 123                 listAdapter.notifyItemRangeInserted(viewModel.items.size() - 1, 2);
 124             }
 125
 126             listAdapter.checkTransactionSubmittable();
 127         }
 128     }
 129     @Override
 130     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
 131         super.onCreateOptionsMenu(menu, inflater);
 132         final FragmentActivity activity = getActivity();
 133
 134         inflater.inflate(R.menu.new_transaction_fragment, menu);
 135
 136         menu.findItem(R.id.scan_qr)
 137             .setOnMenuItemClickListener(this::onScanQrAction);
 138
 139         menu.findItem(R.id.action_reset_new_transaction_activity)
 140             .setOnMenuItemClickListener(item -> {
 141                 listAdapter.reset();
 142                 return true;
 143             });
 144
 145         final MenuItem toggleCurrencyItem = menu.findItem(R.id.toggle_currency);
 146         toggleCurrencyItem.setOnMenuItemClickListener(item -> {
 147             viewModel.toggleCurrencyVisible();
 148             return true;
 149         });
 150         if (activity != null)
 151             viewModel.showCurrency.observe(activity, toggleCurrencyItem::setChecked);
 152
 153         final MenuItem toggleCommentsItem = menu.findItem(R.id.toggle_comments);
 154         toggleCommentsItem.setOnMenuItemClickListener(item -> {
 155             viewModel.toggleShowComments();
 156             return true;
 157         });
 158         if (activity != null)
 159             viewModel.showComments.observe(activity, toggleCommentsItem::setChecked);
 160     }
 161     private boolean onScanQrAction(MenuItem item) {
 162         try {
 163             scanQrLauncher.launch(null);
 164         }
 165         catch (Exception e) {
 166             Logger.debug("qr", "Error launching QR scanner", e);
 167         }
 168
 169         return true;
 170     }
 171     @Override
 172     public View onCreateView(LayoutInflater inflater, ViewGroup container,
 173                              Bundle savedInstanceState) {
 174         // Inflate the layout for this fragment
 175         return inflater.inflate(R.layout.fragment_new_transaction, container, false);
 176     }
 177
 178     @Override
 179     public void onViewCreated(@NotNull View view, @Nullable Bundle savedInstanceState) {
 180         super.onViewCreated(view, savedInstanceState);
 181         FragmentActivity activity = getActivity();
 182         if (activity == null)
 183             throw new RSInvalidStateException(
 184                     "getActivity() returned null within onActivityCreated()");
 185
 186         viewModel = new ViewModelProvider(activity).get(NewTransactionModel.class);
 187         viewModel.observeDataProfile(this);
 188         mProfile = Data.getProfile();
 189         listAdapter = new NewTransactionItemsAdapter(viewModel, mProfile);
 190
 191         RecyclerView list = activity.findViewById(R.id.new_transaction_accounts);
 192         list.setAdapter(listAdapter);
 193         list.setLayoutManager(new LinearLayoutManager(activity));
 194
 195         Data.observeProfile(getViewLifecycleOwner(), profile -> {
 196             mProfile = profile;
 197             listAdapter.setProfile(profile);
 198         });
 199         listAdapter.notifyDataSetChanged();
 200         viewModel.isSubmittable()
 201                  .observe(getViewLifecycleOwner(), isSubmittable -> {
 202                      if (isSubmittable) {
 203                          if (fab != null) {
 204                              fab.show();
 205                          }
 206                      }
 207                      else {
 208                          if (fab != null) {
 209                              fab.hide();
 210                          }
 211                      }
 212                  });
 213 //        viewModel.checkTransactionSubmittable(listAdapter);
 214
 215         fab = activity.findViewById(R.id.fabAdd);
 216         fab.setOnClickListener(v -> onFabPressed());
 217
 218         boolean keep = false;
 219
 220         Bundle args = getArguments();
 221         if (args != null) {
 222             String error = args.getString("error");
 223             if (error != null) {
 224                 Logger.debug("new-trans-f", String.format("Got error: %s", error));
 225
 226                 Context context = getContext();
 227                 if (context != null) {
 228                     AlertDialog.Builder builder = new AlertDialog.Builder(context);
 229                     final Resources resources = context.getResources();
 230                     final StringBuilder message = new StringBuilder();
 231                     message.append(resources.getString(R.string.err_json_send_error_head));
 232                     message.append("\n\n");
 233                     message.append(error);
 234                     if (mProfile.getApiVersion()
 235                                 .equals(API.auto))
 236                         message.append(
 237                                 resources.getString(R.string.err_json_send_error_unsupported));
 238                     else {
 239                         message.append(resources.getString(R.string.err_json_send_error_tail));
 240                         builder.setPositiveButton(R.string.btn_profile_options, (dialog, which) -> {
 241                             Logger.debug("error", "will start profile editor");
 242                             MobileLedgerProfile.startEditProfileActivity(context, mProfile);
 243                         });
 244                     }
 245                     builder.setMessage(message);
 246                     builder.create()
 247                            .show();
 248                 }
 249                 else {
 250                     Snackbar.make(list, error, Snackbar.LENGTH_INDEFINITE)
 251                             .show();
 252                 }
 253                 keep = true;
 254             }
 255         }
 256
 257         int focused = 0;
 258         if (savedInstanceState != null) {
 259             keep |= savedInstanceState.getBoolean("keep", true);
 260             focused = savedInstanceState.getInt("focused", 0);
 261         }
 262
 263         if (!keep)
 264             viewModel.reset();
 265         else {
 266             viewModel.setFocusedItem(focused);
 267         }
 268
 269         ProgressBar p = activity.findViewById(R.id.progressBar);
 270         viewModel.observeBusyFlag(getViewLifecycleOwner(), isBusy -> {
 271             if (isBusy) {
 272 //                Handler h = new Handler();
 273 //                h.postDelayed(() -> {
 274 //                    if (viewModel.getBusyFlag())
 275 //                        p.setVisibility(View.VISIBLE);
 276 //
 277 //                }, 10);
 278                 p.setVisibility(View.VISIBLE);
 279             }
 280             else
 281                 p.setVisibility(View.INVISIBLE);
 282         });
 283     }
 284     @Override
 285     public void onSaveInstanceState(@NonNull Bundle outState) {
 286         super.onSaveInstanceState(outState);
 287         outState.putBoolean("keep", true);
 288         final int focusedItem = viewModel.getFocusedItem();
 289         outState.putInt("focused", focusedItem);
 290     }
 291     private void onFabPressed() {
 292         fab.hide();
 293         Misc.hideSoftKeyboard(this);
 294         if (mListener != null) {
 295             SimpleDate date = viewModel.getDate();
 296             LedgerTransaction tr =
 297                     new LedgerTransaction(null, date, viewModel.getDescription(), mProfile);
 298
 299             tr.setComment(viewModel.getComment());
 300             LedgerTransactionAccount emptyAmountAccount = null;
 301             float emptyAmountAccountBalance = 0;
 302             for (int i = 0; i < viewModel.getAccountCount(); i++) {
 303                 LedgerTransactionAccount acc =
 304                         new LedgerTransactionAccount(viewModel.getAccount(i));
 305                 if (acc.getAccountName()
 306                        .trim()
 307                        .isEmpty())
 308                     continue;
 309
 310                 if (acc.isAmountSet()) {
 311                     emptyAmountAccountBalance += acc.getAmount();
 312                 }
 313                 else {
 314                     emptyAmountAccount = acc;
 315                 }
 316
 317                 tr.addAccount(acc);
 318             }
 319
 320             if (emptyAmountAccount != null)
 321                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 322
 323             mListener.onTransactionSave(tr);
 324         }
 325     }
 326
 327     @Override
 328     public void onAttach(@NotNull Context context) {
 329         super.onAttach(context);
 330         if (context instanceof OnNewTransactionFragmentInteractionListener) {
 331             mListener = (OnNewTransactionFragmentInteractionListener) context;
 332         }
 333         else {
 334             throw new RuntimeException(
 335                     context.toString() + " must implement OnFragmentInteractionListener");
 336         }
 337     }
 338
 339     @Override
 340     public void onDetach() {
 341         super.onDetach();
 342         mListener = null;
 343     }
 344
 345     /**
 346      * This interface must be implemented by activities that contain this
 347      * fragment to allow an interaction in this fragment to be communicated
 348      * to the activity and potentially other fragments contained in that
 349      * activity.
 350      * <p>
 351      * See the Android Training lesson <a href=
 352      * "http://developer.android.com/training/basics/fragments/communicating.html"
 353      * >Communicating with Other Fragments</a> for more information.
 354      */
 355     public interface OnNewTransactionFragmentInteractionListener {
 356         void onTransactionSave(LedgerTransaction tr);
 357     }
 358 }