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.annotation.SuppressLint;
  21 import android.database.Cursor;
  22 import android.os.AsyncTask;
  23 import android.os.Bundle;
  24 import com.google.android.material.snackbar.BaseTransientBottomBar;
  25 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  26 import com.google.android.material.snackbar.Snackbar;
  27 import androidx.fragment.app.DialogFragment;
  28 import androidx.appcompat.widget.Toolbar;
  29 import android.text.Editable;
  30 import android.text.InputType;
  31 import android.text.TextWatcher;
  32 import android.util.Log;
  33 import android.util.TypedValue;
  34 import android.view.Gravity;
  35 import android.view.Menu;
  36 import android.view.MenuItem;
  37 import android.view.MotionEvent;
  38 import android.view.View;
  39 import android.view.inputmethod.EditorInfo;
  40 import android.widget.AutoCompleteTextView;
  41 import android.widget.EditText;
  42 import android.widget.ProgressBar;
  43 import android.widget.TableLayout;
  44 import android.widget.TableRow;
  45 import android.widget.TextView;
  46 import android.widget.Toast;
  47
  48 import net.ktnx.mobileledger.BuildConfig;
  49 import net.ktnx.mobileledger.R;
  50 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  51 import net.ktnx.mobileledger.async.SaveTransactionTask;
  52 import net.ktnx.mobileledger.async.TaskCallback;
  53 import net.ktnx.mobileledger.model.Data;
  54 import net.ktnx.mobileledger.model.LedgerTransaction;
  55 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  56 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  57 import net.ktnx.mobileledger.ui.DatePickerFragment;
  58 import net.ktnx.mobileledger.ui.OnSwipeTouchListener;
  59 import net.ktnx.mobileledger.utils.Globals;
  60 import net.ktnx.mobileledger.utils.MLDB;
  61
  62 import java.text.ParseException;
  63 import java.util.ArrayList;
  64 import java.util.Date;
  65 import java.util.List;
  66 import java.util.Locale;
  67 import java.util.Objects;
  68
  69 /*
  70  * TODO: nicer progress while transaction is submitted
  71  * TODO: reports
  72  * TODO: get rid of the custom session/cookie and auth code?
  73  *         (the last problem with the POST was the missing content-length header)
  74  * TODO: nicer swiping removal with visual feedback
  75  *  */
  76
  77 public class NewTransactionActivity extends CrashReportingActivity
  78         implements TaskCallback, DescriptionSelectedCallback {
  79     private static SaveTransactionTask saver;
  80     private TableLayout table;
  81     private ProgressBar progress;
  82     private FloatingActionButton fab;
  83     private TextView tvDate;
  84     private AutoCompleteTextView tvDescription;
  85     private static boolean isZero(float f) {
  86         return (f < 0.005) && (f > -0.005);
  87     }
  88     @Override
  89     protected void onCreate(Bundle savedInstanceState) {
  90         super.onCreate(savedInstanceState);
  91
  92         setContentView(R.layout.activity_new_transaction);
  93         Toolbar toolbar = findViewById(R.id.toolbar);
  94         setSupportActionBar(toolbar);
  95         toolbar.setSubtitle(Data.profile.get().getName());
  96
  97         tvDate = findViewById(R.id.new_transaction_date);
  98         tvDate.setOnFocusChangeListener((v, hasFocus) -> {
  99             if (hasFocus) pickTransactionDate(v);
 100         });
 101         tvDescription = findViewById(R.id.new_transaction_description);
 102         MLDB.hookAutocompletionAdapter(this, tvDescription, MLDB.DESCRIPTION_HISTORY_TABLE,
 103                 "description", false, findViewById(R.id.new_transaction_acc_1), this);
 104         hookTextChangeListener(tvDescription);
 105
 106         progress = findViewById(R.id.save_transaction_progress);
 107         fab = findViewById(R.id.fab);
 108         fab.setOnClickListener(v -> saveTransaction());
 109
 110         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
 111         table = findViewById(R.id.new_transaction_accounts_table);
 112         for (int i = 0; i < table.getChildCount(); i++) {
 113             TableRow row = (TableRow) table.getChildAt(i);
 114             AutoCompleteTextView tvAccountName = (AutoCompleteTextView) row.getChildAt(0);
 115             TextView tvAmount = (TextView) row.getChildAt(1);
 116             hookSwipeListener(row);
 117             MLDB.hookAutocompletionAdapter(this, tvAccountName, MLDB.ACCOUNTS_TABLE, "name", true,
 118                     tvAmount, null);
 119             hookTextChangeListener(tvAccountName);
 120             hookTextChangeListener(tvAmount);
 121 //            Log.d("swipe", "hooked to row "+i);
 122         }
 123     }
 124
 125     @Override
 126     public void finish() {
 127         super.finish();
 128         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 129     }
 130
 131     @Override
 132     public boolean onOptionsItemSelected(MenuItem item) {
 133         switch (item.getItemId()) {
 134             case android.R.id.home:
 135                 finish();
 136                 return true;
 137         }
 138         return super.onOptionsItemSelected(item);
 139     }
 140     @Override
 141     protected void onStart() {
 142         super.onStart();
 143         if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 144     }
 145     public void saveTransaction() {
 146         if (fab != null) fab.setEnabled(false);
 147         toggleAllEditing(false);
 148         progress.setVisibility(View.VISIBLE);
 149         try {
 150
 151             saver = new SaveTransactionTask(this);
 152
 153             String dateString = tvDate.getText().toString();
 154             Date date;
 155             if (dateString.isEmpty()) date = new Date();
 156             else date = Globals.parseLedgerDate(dateString);
 157             LedgerTransaction tr = new LedgerTransaction(date, tvDescription.getText().toString());
 158
 159             TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 160             for (int i = 0; i < table.getChildCount(); i++) {
 161                 TableRow row = (TableRow) table.getChildAt(i);
 162                 String acc = ((TextView) row.getChildAt(0)).getText().toString();
 163                 String amt = ((TextView) row.getChildAt(1)).getText().toString();
 164                 LedgerTransactionAccount item =
 165                         amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 166                                          : new LedgerTransactionAccount(acc);
 167
 168                 tr.addAccount(item);
 169             }
 170             saver.execute(tr);
 171         }
 172         catch (ParseException e) {
 173             Log.d("new-transaction", "Parse error", e);
 174             Toast.makeText(this, getResources().getString(R.string.error_invalid_date),
 175                     Toast.LENGTH_LONG).show();
 176             tvDate.requestFocus();
 177
 178             progress.setVisibility(View.GONE);
 179             toggleAllEditing(true);
 180             if (fab != null) fab.setEnabled(true);
 181         }
 182         catch (Exception e) {
 183             Log.d("new-transaction", "Unknown error", e);
 184
 185             progress.setVisibility(View.GONE);
 186             toggleAllEditing(true);
 187             if (fab != null) fab.setEnabled(true);
 188         }
 189     }
 190     private void toggleAllEditing(boolean enabled) {
 191         tvDate.setEnabled(enabled);
 192         tvDescription.setEnabled(enabled);
 193         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 194         for (int i = 0; i < table.getChildCount(); i++) {
 195             TableRow row = (TableRow) table.getChildAt(i);
 196             for (int j = 0; j < row.getChildCount(); j++) {
 197                 row.getChildAt(j).setEnabled(enabled);
 198             }
 199         }
 200     }
 201     private void hookSwipeListener(final TableRow row) {
 202         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 203             public void onSwipeLeft() {
 204 //                Log.d("swipe", "LEFT" + row.getId());
 205                 if (table.getChildCount() > 2) {
 206                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 207                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 208                     TextView prev_amt =
 209                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : tvDescription;
 210                     TextView next_acc =
 211                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 212
 213                     if (next_acc == null) {
 214                         prev_amt.setNextFocusRightId(R.id.none);
 215                         prev_amt.setNextFocusForwardId(R.id.none);
 216                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 217                     }
 218                     else {
 219                         prev_amt.setNextFocusRightId(next_acc.getId());
 220                         prev_amt.setNextFocusForwardId(next_acc.getId());
 221                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 222                     }
 223
 224                     if (row.hasFocus()) {
 225                         if (next_acc != null) next_acc.requestFocus();
 226                         else prev_amt.requestFocus();
 227                     }
 228
 229                     table.removeView(row);
 230                     check_transaction_submittable();
 231 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 232                 }
 233                 else {
 234                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 235                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 236                 }
 237             }
 238             //            @Override
 239 //            public boolean performClick(View view, MotionEvent m) {
 240 //                return true;
 241 //            }
 242             public boolean onTouch(View view, MotionEvent m) {
 243                 return gestureDetector.onTouchEvent(m);
 244             }
 245         });
 246     }
 247
 248     public boolean simulateCrash(MenuItem item) {
 249         Log.d("crash", "Will crash intentionally");
 250         new AsyncCrasher().execute();
 251         return true;
 252     }
 253     public boolean onCreateOptionsMenu(Menu menu) {
 254         // Inflate the menu; this adds items to the action bar if it is present.
 255         getMenuInflater().inflate(R.menu.new_transaction, menu);
 256
 257         if (BuildConfig.DEBUG) {
 258             menu.findItem(R.id.action_simulate_crash).setVisible(true);
 259         }
 260         check_transaction_submittable();
 261
 262         return true;
 263     }
 264
 265     public void pickTransactionDate(View view) {
 266         DialogFragment picker = new DatePickerFragment();
 267         picker.show(getSupportFragmentManager(), "datePicker");
 268     }
 269
 270     public int dp2px(float dp) {
 271         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 272                 getResources().getDisplayMetrics()));
 273     }
 274     private void hookTextChangeListener(final TextView view) {
 275         view.addTextChangedListener(new TextWatcher() {
 276             @Override
 277             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 278
 279             }
 280
 281             @Override
 282             public void onTextChanged(CharSequence s, int start, int before, int count) {
 283
 284             }
 285
 286             @Override
 287             public void afterTextChanged(Editable s) {
 288 //                Log.d("input", "text changed");
 289                 check_transaction_submittable();
 290             }
 291         });
 292
 293     }
 294     private TableRow doAddAccountRow(boolean focus) {
 295         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 296         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 297                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 298         acc.setHint(R.string.new_transaction_account_hint);
 299         acc.setWidth(0);
 300         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 301                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 302         acc.setSingleLine(true);
 303
 304         final EditText amt = new EditText(this);
 305         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 306                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 307         amt.setHint(R.string.new_transaction_amount_hint);
 308         amt.setWidth(0);
 309         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 310                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 311         amt.setMinWidth(dp2px(40));
 312         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 313         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 314         amt.setSelectAllOnFocus(true);
 315
 316         // forward navigation support
 317         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 318         final TextView last_amt = (TextView) last_row.getChildAt(1);
 319         last_amt.setNextFocusForwardId(acc.getId());
 320         last_amt.setNextFocusRightId(acc.getId());
 321         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 322         acc.setNextFocusForwardId(amt.getId());
 323         acc.setNextFocusRightId(amt.getId());
 324
 325         final TableRow row = new TableRow(this);
 326         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 327                 TableRow.LayoutParams.MATCH_PARENT));
 328         row.setGravity(Gravity.BOTTOM);
 329         row.addView(acc);
 330         row.addView(amt);
 331         table.addView(row);
 332
 333         if (focus) acc.requestFocus();
 334
 335         hookSwipeListener(row);
 336         MLDB.hookAutocompletionAdapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt, null);
 337         hookTextChangeListener(acc);
 338         hookTextChangeListener(amt);
 339
 340         return row;
 341     }
 342     public void addTransactionAccountFromMenu(MenuItem item) {
 343         doAddAccountRow(true);
 344     }
 345     public void resetTransactionFromMenu(MenuItem item) {
 346         resetForm();
 347     }
 348     public void saveTransactionFromMenu(MenuItem item) {
 349         saveTransaction();
 350     }
 351     // rules:
 352     // 1) at least two account names
 353     // 2) each amount must have account name
 354     // 3) amounts must balance to 0, or
 355     // 3a) there must be exactly one empty amount
 356     // 4) empty accounts with empty amounts are ignored
 357     // 5) a row with an empty account name or empty amount is guaranteed to exist
 358     @SuppressLint("DefaultLocale")
 359     private void check_transaction_submittable() {
 360         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 361         int accounts = 0;
 362         int accounts_with_values = 0;
 363         int amounts = 0;
 364         int amounts_with_accounts = 0;
 365         int empty_rows = 0;
 366         TextView empty_amount = null;
 367         boolean single_empty_amount = false;
 368         boolean single_empty_amount_has_account = false;
 369         float running_total = 0f;
 370         boolean have_description =
 371                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 372                         .isEmpty();
 373
 374         try {
 375             for (int i = 0; i < table.getChildCount(); i++) {
 376                 TableRow row = (TableRow) table.getChildAt(i);
 377
 378                 TextView acc_name_v = (TextView) row.getChildAt(0);
 379                 TextView amount_v = (TextView) row.getChildAt(1);
 380                 String amt = String.valueOf(amount_v.getText());
 381                 String acc_name = String.valueOf(acc_name_v.getText());
 382                 acc_name = acc_name.trim();
 383
 384                 if (!acc_name.isEmpty()) {
 385                     accounts++;
 386
 387                     if (!amt.isEmpty()) {
 388                         accounts_with_values++;
 389                     }
 390                 }
 391                 else empty_rows++;
 392
 393                 if (amt.isEmpty()) {
 394                     amount_v.setHint(String.format("%1.2f", 0f));
 395                     if (empty_amount == null) {
 396                         empty_amount = amount_v;
 397                         single_empty_amount = true;
 398                         single_empty_amount_has_account = !acc_name.isEmpty();
 399                     }
 400                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 401                 }
 402                 else {
 403                     amounts++;
 404                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 405                     running_total += Float.valueOf(amt);
 406                 }
 407             }
 408
 409             if ((empty_rows == 0) &&
 410                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 411             {
 412                 doAddAccountRow(false);
 413             }
 414
 415             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 416                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 417                                                "single_empty_with_acc=%s", accounts,
 418                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 419                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 420
 421             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 422                 (amounts_with_accounts == amounts) &&
 423                 (single_empty_amount && single_empty_amount_has_account || isZero(running_total)))
 424             {
 425                 if (fab != null) {
 426                     fab.show();
 427                     fab.setEnabled(true);
 428                 }
 429             }
 430             else {
 431                 if (fab != null) fab.hide();
 432             }
 433
 434             if (single_empty_amount) {
 435                 empty_amount.setHint(String.format("%1.2f",
 436                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 437             }
 438
 439         }
 440         catch (NumberFormatException e) {
 441             if (fab != null) fab.hide();
 442         }
 443         catch (Exception e) {
 444             e.printStackTrace();
 445             if (fab != null) fab.hide();
 446         }
 447     }
 448
 449     @Override
 450     public void done(String error) {
 451         progress.setVisibility(View.INVISIBLE);
 452         Log.d("visuals", "hiding progress");
 453
 454         if (error == null) resetForm();
 455         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 456                 BaseTransientBottomBar.LENGTH_LONG).show();
 457
 458         toggleAllEditing(true);
 459         check_transaction_submittable();
 460     }
 461
 462     private void resetForm() {
 463         tvDate.setText("");
 464         tvDescription.setText("");
 465
 466         tvDescription.requestFocus();
 467
 468         while (table.getChildCount() > 2) {
 469             table.removeViewAt(2);
 470         }
 471         for (int i = 0; i < 2; i++) {
 472             TableRow tr = (TableRow) table.getChildAt(i);
 473             if (tr == null) break;
 474
 475             ((TextView) tr.getChildAt(0)).setText("");
 476             ((TextView) tr.getChildAt(1)).setText("");
 477         }
 478     }
 479     @Override
 480     public void descriptionSelected(String description) {
 481         Log.d("descr selected", description);
 482         if (!inputStateIsInitial()) return;
 483
 484         try (Cursor c = MLDB.getReadableDatabase().rawQuery(
 485                 "select profile, id from transactions where description=? order by date desc " +
 486                 "limit 1", new String[]{description}))
 487         {
 488             if (!c.moveToNext()) return;
 489
 490             String profileUUID = c.getString(0);
 491             int transactionId = c.getInt(1);
 492             List<MobileLedgerProfile> profiles = Data.profiles.getList();
 493             MobileLedgerProfile profile = null;
 494             for (int i = 0; i < profiles.size(); i++) {
 495                 MobileLedgerProfile p = profiles.get(i);
 496                 if (p.getUuid().equals(profileUUID)) {
 497                     profile = p;
 498                     break;
 499                 }
 500             }
 501             if (profile == null) throw new RuntimeException(String.format(
 502                     "Unable to find profile %s, which is supposed to contain " +
 503                     "transaction %d with description %s", profileUUID, transactionId, description));
 504
 505             LedgerTransaction tr = profile.loadTransaction(transactionId);
 506             int i = 0;
 507             table = findViewById(R.id.new_transaction_accounts_table);
 508             ArrayList<LedgerTransactionAccount> accounts = tr.getAccounts();
 509             TableRow firstNegative = null;
 510             int negativeCount = 0;
 511             for (i = 0; i < accounts.size(); i++) {
 512                 LedgerTransactionAccount acc = accounts.get(i);
 513                 TableRow row = (TableRow) table.getChildAt(i);
 514                 if (row == null) row = doAddAccountRow(false);
 515
 516                 ((TextView) row.getChildAt(0)).setText(acc.getAccountName());
 517                 ((TextView) row.getChildAt(1))
 518                         .setText(String.format(Locale.US, "%1.2f", acc.getAmount()));
 519
 520                 if (acc.getAmount() < 0.005) {
 521                     if (firstNegative == null) firstNegative = row;
 522                     negativeCount++;
 523                 }
 524             }
 525
 526             if (negativeCount == 1) {
 527                 ((TextView) firstNegative.getChildAt(1)).setText(null);
 528             }
 529
 530             check_transaction_submittable();
 531
 532             EditText firstAmount = (EditText) ((TableRow) table.getChildAt(0)).getChildAt(1);
 533             String amtString = String.valueOf(firstAmount.getText());
 534             firstAmount.requestFocus();
 535             firstAmount.setSelection(0, amtString.length());
 536         }
 537
 538     }
 539     private boolean inputStateIsInitial() {
 540         table = findViewById(R.id.new_transaction_accounts_table);
 541
 542         if (table.getChildCount() != 2) return false;
 543
 544         for (int i = 0; i < 2; i++) {
 545             TableRow row = (TableRow) table.getChildAt(i);
 546             if (((TextView) row.getChildAt(0)).getText().length() > 0) return false;
 547             if (((TextView) row.getChildAt(1)).getText().length() > 0) return false;
 548         }
 549
 550         return true;
 551     }
 552     private class AsyncCrasher extends AsyncTask<Void, Void, Void>{
 553         @Override
 554         protected Void doInBackground(Void... voids) {
 555             throw new RuntimeException("Simulated crash");
 556         }
 557     }
 558 }