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 android.text.Editable;
  25 import android.text.InputType;
  26 import android.text.TextWatcher;
  27 import android.util.TypedValue;
  28 import android.view.Gravity;
  29 import android.view.Menu;
  30 import android.view.MenuItem;
  31 import android.view.MotionEvent;
  32 import android.view.View;
  33 import android.view.inputmethod.EditorInfo;
  34 import android.widget.AutoCompleteTextView;
  35 import android.widget.EditText;
  36 import android.widget.ProgressBar;
  37 import android.widget.TableLayout;
  38 import android.widget.TableRow;
  39 import android.widget.TextView;
  40 import android.widget.Toast;
  41
  42 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  43 import com.google.android.material.snackbar.BaseTransientBottomBar;
  44 import com.google.android.material.snackbar.Snackbar;
  45
  46 import net.ktnx.mobileledger.App;
  47 import net.ktnx.mobileledger.BuildConfig;
  48 import net.ktnx.mobileledger.R;
  49 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  50 import net.ktnx.mobileledger.async.SendTransactionTask;
  51 import net.ktnx.mobileledger.async.TaskCallback;
  52 import net.ktnx.mobileledger.model.Data;
  53 import net.ktnx.mobileledger.model.LedgerTransaction;
  54 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  55 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  56 import net.ktnx.mobileledger.ui.AutoCompleteTextViewWithClear;
  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.Locale;
  66 import java.util.Objects;
  67
  68 import androidx.appcompat.widget.Toolbar;
  69 import androidx.fragment.app.DialogFragment;
  70
  71 import static net.ktnx.mobileledger.utils.Logger.debug;
  72
  73 /*
  74  * TODO: nicer progress while transaction is submitted
  75  * TODO: reports
  76  * TODO: get rid of the custom session/cookie and auth code?
  77  *         (the last problem with the POST was the missing content-length header)
  78  *  */
  79
  80 public class NewTransactionActivity extends ProfileThemedActivity
  81         implements TaskCallback, DescriptionSelectedCallback {
  82     private static SendTransactionTask saver;
  83     private TableLayout table;
  84     private ProgressBar progress;
  85     private FloatingActionButton fab;
  86     private TextView tvDate;
  87     private AutoCompleteTextView tvDescription;
  88     private static boolean isZero(float f) {
  89         return (f < 0.005) && (f > -0.005);
  90     }
  91     @Override
  92     protected void onCreate(Bundle savedInstanceState) {
  93         super.onCreate(savedInstanceState);
  94
  95         setContentView(R.layout.activity_new_transaction);
  96         Toolbar toolbar = findViewById(R.id.toolbar);
  97         setSupportActionBar(toolbar);
  98         toolbar.setSubtitle(mProfile.getName());
  99
 100         tvDate = findViewById(R.id.new_transaction_date);
 101         tvDate.setOnFocusChangeListener((v, hasFocus) -> {
 102             if (hasFocus) pickTransactionDate(v);
 103         });
 104         tvDescription = findViewById(R.id.new_transaction_description);
 105         MLDB.hookAutocompletionAdapter(this, tvDescription, MLDB.DESCRIPTION_HISTORY_TABLE,
 106                 "description", false, this, mProfile);
 107         hookTextChangeListener(tvDescription);
 108
 109         progress = findViewById(R.id.save_transaction_progress);
 110         fab = findViewById(R.id.fab);
 111         fab.setOnClickListener(v -> saveTransaction());
 112
 113         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
 114         table = findViewById(R.id.new_transaction_accounts_table);
 115
 116         while (table.getChildCount() < 2) {
 117             doAddAccountRow(false);
 118         }
 119
 120         check_transaction_submittable();
 121     }
 122     @Override
 123     protected void initProfile() {
 124         String profileUUID = getIntent().getStringExtra("profile_uuid");
 125
 126         if (profileUUID != null) {
 127             mProfile = Data.getProfile(profileUUID);
 128             if (mProfile == null) finish();
 129         }
 130         else super.initProfile();
 131     }
 132     @Override
 133     public void finish() {
 134         super.finish();
 135         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 136     }
 137
 138     @Override
 139     public boolean onOptionsItemSelected(MenuItem item) {
 140         switch (item.getItemId()) {
 141             case android.R.id.home:
 142                 finish();
 143                 return true;
 144         }
 145         return super.onOptionsItemSelected(item);
 146     }
 147     @Override
 148     protected void onStart() {
 149         super.onStart();
 150         if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 151     }
 152     public void saveTransaction() {
 153         if (fab != null) fab.setEnabled(false);
 154         toggleAllEditing(false);
 155         progress.setVisibility(View.VISIBLE);
 156         try {
 157
 158             saver = new SendTransactionTask(this, mProfile);
 159
 160             String dateString = tvDate.getText().toString();
 161             Date date;
 162             if (dateString.isEmpty()) date = new Date();
 163             else date = Globals.parseLedgerDate(dateString);
 164             LedgerTransaction tr =
 165                     new LedgerTransaction(null, date, tvDescription.getText().toString(), mProfile);
 166
 167             TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 168             LedgerTransactionAccount emptyAmountAccount = null;
 169             float emptyAmountAccountBalance = 0;
 170             for (int i = 0; i < table.getChildCount(); i++) {
 171                 TableRow row = (TableRow) table.getChildAt(i);
 172                 String acc = ((TextView) row.getChildAt(0)).getText().toString();
 173                 if (acc.isEmpty()) continue;
 174
 175                 String amt = ((TextView) row.getChildAt(1)).getText().toString();
 176                 LedgerTransactionAccount item;
 177                 if (amt.length() > 0) {
 178                     final float amount = Float.parseFloat(amt);
 179                     item = new LedgerTransactionAccount(acc, amount);
 180                     emptyAmountAccountBalance += amount;
 181                 }
 182                 else {
 183                     item = new LedgerTransactionAccount(acc);
 184                     emptyAmountAccount = item;
 185                 }
 186
 187                 tr.addAccount(item);
 188             }
 189
 190             if (emptyAmountAccount != null)
 191                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 192             saver.execute(tr);
 193         }
 194         catch (ParseException e) {
 195             debug("new-transaction", "Parse error", e);
 196             Toast.makeText(this, getResources().getString(R.string.error_invalid_date),
 197                     Toast.LENGTH_LONG).show();
 198             tvDate.requestFocus();
 199
 200             progress.setVisibility(View.GONE);
 201             toggleAllEditing(true);
 202             if (fab != null) fab.setEnabled(true);
 203         }
 204         catch (Exception e) {
 205             debug("new-transaction", "Unknown error", e);
 206
 207             progress.setVisibility(View.GONE);
 208             toggleAllEditing(true);
 209             if (fab != null) fab.setEnabled(true);
 210         }
 211     }
 212     private void toggleAllEditing(boolean enabled) {
 213         tvDate.setEnabled(enabled);
 214         tvDescription.setEnabled(enabled);
 215         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 216         for (int i = 0; i < table.getChildCount(); i++) {
 217             TableRow row = (TableRow) table.getChildAt(i);
 218             for (int j = 0; j < row.getChildCount(); j++) {
 219                 row.getChildAt(j).setEnabled(enabled);
 220             }
 221         }
 222     }
 223     private void hookSwipeListener(final TableRow row) {
 224         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 225             private void onSwipeAside() {
 226                 if (table.getChildCount() > 2) {
 227                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 228                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 229                     TextView prev_amt =
 230                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : tvDescription;
 231                     TextView next_acc =
 232                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 233
 234                     if (next_acc == null) {
 235                         prev_amt.setNextFocusRightId(R.id.none);
 236                         prev_amt.setNextFocusForwardId(R.id.none);
 237                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 238                     }
 239                     else {
 240                         prev_amt.setNextFocusRightId(next_acc.getId());
 241                         prev_amt.setNextFocusForwardId(next_acc.getId());
 242                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 243                     }
 244
 245                     if (row.hasFocus()) {
 246                         if (next_acc != null) next_acc.requestFocus();
 247                         else prev_amt.requestFocus();
 248                     }
 249
 250                     table.removeView(row);
 251                     check_transaction_submittable();
 252 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 253                 }
 254                 else {
 255                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 256                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 257                 }
 258             }
 259             public void onSwipeLeft() {
 260                 onSwipeAside();
 261             }
 262             public void onSwipeRight() {
 263                 onSwipeAside();
 264             }
 265             //            @Override
 266 //            public boolean performClick(View view, MotionEvent m) {
 267 //                return true;
 268 //            }
 269             public boolean onTouch(View view, MotionEvent m) {
 270                 return gestureDetector.onTouchEvent(m);
 271             }
 272         });
 273     }
 274
 275     public void simulateCrash(MenuItem item) {
 276         debug("crash", "Will crash intentionally");
 277         new AsyncCrasher().execute();
 278     }
 279     public boolean onCreateOptionsMenu(Menu menu) {
 280         // Inflate the menu; this adds items to the action bar if it is present.
 281         getMenuInflater().inflate(R.menu.new_transaction, menu);
 282
 283         if (BuildConfig.DEBUG) {
 284             menu.findItem(R.id.action_simulate_crash).setVisible(true);
 285         }
 286         check_transaction_submittable();
 287
 288         return true;
 289     }
 290
 291     public void pickTransactionDate(View view) {
 292         DialogFragment picker = new DatePickerFragment();
 293         picker.show(getSupportFragmentManager(), "datePicker");
 294     }
 295
 296     public int dp2px(float dp) {
 297         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 298                 getResources().getDisplayMetrics()));
 299     }
 300     private void hookTextChangeListener(final TextView view) {
 301         view.addTextChangedListener(new TextWatcher() {
 302             @Override
 303             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 304
 305             }
 306
 307             @Override
 308             public void onTextChanged(CharSequence s, int start, int before, int count) {
 309
 310             }
 311
 312             @Override
 313             public void afterTextChanged(Editable s) {
 314 //                debug("input", "text changed");
 315                 check_transaction_submittable();
 316             }
 317         });
 318
 319     }
 320     private TableRow doAddAccountRow(boolean focus) {
 321         final AutoCompleteTextView acc = new AutoCompleteTextViewWithClear(this);
 322         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 323                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 324         acc.setHint(R.string.new_transaction_account_hint);
 325         acc.setWidth(0);
 326         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 327                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 328         acc.setSingleLine(true);
 329
 330         final EditText amt = new EditText(this);
 331         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 332                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 333         amt.setHint(R.string.new_transaction_amount_hint);
 334         amt.setWidth(0);
 335         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 336                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 337         amt.setMinWidth(dp2px(40));
 338         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 339         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 340         amt.setSelectAllOnFocus(true);
 341
 342         // forward navigation support
 343         TextView last_amt;
 344         int rows = table.getChildCount();
 345         if (rows > 0) {
 346             final TableRow last_row = (TableRow) table.getChildAt(rows - 1);
 347             last_amt = (TextView) last_row.getChildAt(1);
 348         }
 349         else {
 350             last_amt = tvDescription;
 351         }
 352         last_amt.setNextFocusForwardId(acc.getId());
 353         last_amt.setNextFocusRightId(acc.getId());
 354         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 355         acc.setNextFocusForwardId(amt.getId());
 356         acc.setNextFocusRightId(amt.getId());
 357
 358         final TableRow row = new TableRow(this);
 359         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 360                 TableRow.LayoutParams.MATCH_PARENT));
 361         row.setGravity(Gravity.BOTTOM);
 362         row.addView(acc);
 363         row.addView(amt);
 364         table.addView(row);
 365
 366         if (focus) acc.requestFocus();
 367
 368         hookSwipeListener(row);
 369         MLDB.hookAutocompletionAdapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true,
 370                 description -> amt.requestFocus(), mProfile);
 371         hookTextChangeListener(acc);
 372         hookTextChangeListener(amt);
 373
 374         return row;
 375     }
 376     public void addTransactionAccountFromMenu(MenuItem item) {
 377         doAddAccountRow(true);
 378     }
 379     public void resetTransactionFromMenu(MenuItem item) {
 380         resetForm();
 381     }
 382     public void saveTransactionFromMenu(MenuItem item) {
 383         saveTransaction();
 384     }
 385     // rules:
 386     // 1) at least two account names
 387     // 2) each amount must have account name
 388     // 3) amounts must balance to 0, or
 389     // 3a) there must be exactly one empty amount
 390     // 4) empty accounts with empty amounts are ignored
 391     // 5) a row with an empty account name or empty amount is guaranteed to exist
 392     @SuppressLint("DefaultLocale")
 393     private void check_transaction_submittable() {
 394         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 395         int accounts = 0;
 396         int accounts_with_values = 0;
 397         int amounts = 0;
 398         int amounts_with_accounts = 0;
 399         int empty_rows = 0;
 400         TextView empty_amount = null;
 401         boolean single_empty_amount = false;
 402         boolean single_empty_amount_has_account = false;
 403         float running_total = 0f;
 404         boolean have_description =
 405                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 406                         .isEmpty();
 407
 408         try {
 409             for (int i = 0; i < table.getChildCount(); i++) {
 410                 TableRow row = (TableRow) table.getChildAt(i);
 411
 412                 TextView acc_name_v = (TextView) row.getChildAt(0);
 413                 TextView amount_v = (TextView) row.getChildAt(1);
 414                 String amt = String.valueOf(amount_v.getText());
 415                 String acc_name = String.valueOf(acc_name_v.getText());
 416                 acc_name = acc_name.trim();
 417
 418                 if (!acc_name.isEmpty()) {
 419                     accounts++;
 420
 421                     if (!amt.isEmpty()) {
 422                         accounts_with_values++;
 423                     }
 424                 }
 425                 else empty_rows++;
 426
 427                 if (amt.isEmpty()) {
 428                     amount_v.setHint(String.format("%1.2f", 0f));
 429                     if (empty_amount == null) {
 430                         empty_amount = amount_v;
 431                         single_empty_amount = true;
 432                         single_empty_amount_has_account = !acc_name.isEmpty();
 433                     }
 434                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 435                 }
 436                 else {
 437                     amounts++;
 438                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 439                     running_total += Float.valueOf(amt);
 440                 }
 441             }
 442
 443             if ((empty_rows == 0) &&
 444                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 445             {
 446                 doAddAccountRow(false);
 447             }
 448
 449             debug("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 450                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 451                                                "single_empty_with_acc=%s", accounts,
 452                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 453                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 454
 455             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 456                 (amounts_with_accounts == amounts) &&
 457                 (single_empty_amount && single_empty_amount_has_account || isZero(running_total)))
 458             {
 459                 if (fab != null) {
 460                     fab.show();
 461                     fab.setEnabled(true);
 462                 }
 463             }
 464             else {
 465                 if (fab != null) fab.hide();
 466             }
 467
 468             if (single_empty_amount) {
 469                 empty_amount.setHint(String.format("%1.2f",
 470                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 471             }
 472
 473         }
 474         catch (NumberFormatException e) {
 475             if (fab != null) fab.hide();
 476         }
 477         catch (Exception e) {
 478             e.printStackTrace();
 479             if (fab != null) fab.hide();
 480         }
 481     }
 482
 483     @Override
 484     public void done(String error) {
 485         progress.setVisibility(View.INVISIBLE);
 486         debug("visuals", "hiding progress");
 487
 488         if (error == null) resetForm();
 489         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 490                 BaseTransientBottomBar.LENGTH_LONG).show();
 491
 492         toggleAllEditing(true);
 493         check_transaction_submittable();
 494     }
 495
 496     private void resetForm() {
 497         tvDate.setText("");
 498         tvDescription.setText("");
 499
 500         tvDescription.requestFocus();
 501
 502         while (table.getChildCount() > 2) {
 503             table.removeViewAt(2);
 504         }
 505         for (int i = 0; i < 2; i++) {
 506             TableRow tr = (TableRow) table.getChildAt(i);
 507             if (tr == null) break;
 508
 509             ((TextView) tr.getChildAt(0)).setText("");
 510             ((TextView) tr.getChildAt(1)).setText("");
 511         }
 512     }
 513     @Override
 514     public void descriptionSelected(String description) {
 515         debug("descr selected", description);
 516         if (!inputStateIsInitial()) return;
 517
 518         String accFilter = mProfile.getPreferredAccountsFilter();
 519
 520         ArrayList<String> params = new ArrayList<>();
 521         StringBuilder sb = new StringBuilder(
 522                 "select t.profile, t.id from transactions t where t.description=?");
 523         params.add(description);
 524
 525         if (accFilter != null) {
 526             sb.append(" AND EXISTS (").append("SELECT 1 FROM transaction_accounts ta ")
 527                     .append("WHERE ta.profile = t.profile").append(" AND ta.transaction_id = t.id")
 528                     .append(" AND UPPER(ta.account_name) LIKE '%'||?||'%')");
 529             params.add(accFilter.toUpperCase());
 530         }
 531
 532         sb.append(" ORDER BY date desc limit 1");
 533
 534         final String sql = sb.toString();
 535         debug("descr", sql);
 536         debug("descr", params.toString());
 537
 538         try (Cursor c = App.getDatabase().rawQuery(sql, params.toArray(new String[]{}))) {
 539             if (!c.moveToNext()) return;
 540
 541             String profileUUID = c.getString(0);
 542             int transactionId = c.getInt(1);
 543             LedgerTransaction tr;
 544             MobileLedgerProfile profile = Data.getProfile(profileUUID);
 545             if (profile == null) throw new RuntimeException(String.format(
 546                     "Unable to find profile %s, which is supposed to contain " +
 547                     "transaction %d with description %s", profileUUID, transactionId, description));
 548
 549             tr = profile.loadTransaction(transactionId);
 550             ArrayList<LedgerTransactionAccount> accounts = tr.getAccounts();
 551             TableRow firstNegative = null;
 552             int negativeCount = 0;
 553             for (int i = 0; i < accounts.size(); i++) {
 554                 LedgerTransactionAccount acc = accounts.get(i);
 555                 TableRow row = (TableRow) table.getChildAt(i);
 556                 if (row == null) row = doAddAccountRow(false);
 557
 558                 ((TextView) row.getChildAt(0)).setText(acc.getAccountName());
 559                 ((TextView) row.getChildAt(1))
 560                         .setText(String.format(Locale.US, "%1.2f", acc.getAmount()));
 561
 562                 if (acc.getAmount() < 0.005) {
 563                     if (firstNegative == null) firstNegative = row;
 564                     negativeCount++;
 565                 }
 566             }
 567
 568             if (negativeCount == 1) {
 569                 ((TextView) firstNegative.getChildAt(1)).setText(null);
 570             }
 571
 572             check_transaction_submittable();
 573
 574             EditText firstAmount = (EditText) ((TableRow) table.getChildAt(0)).getChildAt(1);
 575             String amtString = String.valueOf(firstAmount.getText());
 576             firstAmount.requestFocus();
 577             firstAmount.setSelection(0, amtString.length());
 578         }
 579
 580     }
 581     private boolean inputStateIsInitial() {
 582         table = findViewById(R.id.new_transaction_accounts_table);
 583
 584         if (table.getChildCount() != 2) return false;
 585
 586         for (int i = 0; i < 2; i++) {
 587             TableRow row = (TableRow) table.getChildAt(i);
 588             if (((TextView) row.getChildAt(0)).getText().length() > 0) return false;
 589             if (((TextView) row.getChildAt(1)).getText().length() > 0) return false;
 590         }
 591
 592         return true;
 593     }
 594     private class AsyncCrasher extends AsyncTask<Void, Void, Void> {
 595         @Override
 596         protected Void doInBackground(Void... voids) {
 597             throw new RuntimeException("Simulated crash");
 598         }
 599     }
 600 }