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, findViewById(R.id.new_transaction_acc_1), 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 = new LedgerTransaction(null, date, tvDescription.getText().toString(), mProfile);
 165
 166             TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 167             LedgerTransactionAccount emptyAmountAccount = null;
 168             float emptyAmountAccountBalance = 0;
 169             for (int i = 0; i < table.getChildCount(); i++) {
 170                 TableRow row = (TableRow) table.getChildAt(i);
 171                 String acc = ((TextView) row.getChildAt(0)).getText().toString();
 172                 if (acc.isEmpty()) continue;
 173
 174                 String amt = ((TextView) row.getChildAt(1)).getText().toString();
 175                 LedgerTransactionAccount item;
 176                 if (amt.length() > 0) {
 177                     final float amount = Float.parseFloat(amt);
 178                     item = new LedgerTransactionAccount(acc, amount);
 179                     emptyAmountAccountBalance += amount;
 180                 }
 181                 else {
 182                     item = new LedgerTransactionAccount(acc);
 183                     emptyAmountAccount = item;
 184                 }
 185
 186                 tr.addAccount(item);
 187             }
 188
 189             if (emptyAmountAccount != null)
 190                 emptyAmountAccount.setAmount(-emptyAmountAccountBalance);
 191             saver.execute(tr);
 192         }
 193         catch (ParseException e) {
 194             debug("new-transaction", "Parse error", e);
 195             Toast.makeText(this, getResources().getString(R.string.error_invalid_date),
 196                     Toast.LENGTH_LONG).show();
 197             tvDate.requestFocus();
 198
 199             progress.setVisibility(View.GONE);
 200             toggleAllEditing(true);
 201             if (fab != null) fab.setEnabled(true);
 202         }
 203         catch (Exception e) {
 204             debug("new-transaction", "Unknown error", e);
 205
 206             progress.setVisibility(View.GONE);
 207             toggleAllEditing(true);
 208             if (fab != null) fab.setEnabled(true);
 209         }
 210     }
 211     private void toggleAllEditing(boolean enabled) {
 212         tvDate.setEnabled(enabled);
 213         tvDescription.setEnabled(enabled);
 214         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 215         for (int i = 0; i < table.getChildCount(); i++) {
 216             TableRow row = (TableRow) table.getChildAt(i);
 217             for (int j = 0; j < row.getChildCount(); j++) {
 218                 row.getChildAt(j).setEnabled(enabled);
 219             }
 220         }
 221     }
 222     private void hookSwipeListener(final TableRow row) {
 223         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 224             private void onSwipeAside() {
 225                 if (table.getChildCount() > 2) {
 226                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 227                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 228                     TextView prev_amt =
 229                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : tvDescription;
 230                     TextView next_acc =
 231                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 232
 233                     if (next_acc == null) {
 234                         prev_amt.setNextFocusRightId(R.id.none);
 235                         prev_amt.setNextFocusForwardId(R.id.none);
 236                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 237                     }
 238                     else {
 239                         prev_amt.setNextFocusRightId(next_acc.getId());
 240                         prev_amt.setNextFocusForwardId(next_acc.getId());
 241                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 242                     }
 243
 244                     if (row.hasFocus()) {
 245                         if (next_acc != null) next_acc.requestFocus();
 246                         else prev_amt.requestFocus();
 247                     }
 248
 249                     table.removeView(row);
 250                     check_transaction_submittable();
 251 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 252                 }
 253                 else {
 254                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 255                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 256                 }
 257             }
 258             public void onSwipeLeft() {
 259                 onSwipeAside();
 260             }
 261             public void onSwipeRight() {
 262                 onSwipeAside();
 263             }
 264             //            @Override
 265 //            public boolean performClick(View view, MotionEvent m) {
 266 //                return true;
 267 //            }
 268             public boolean onTouch(View view, MotionEvent m) {
 269                 return gestureDetector.onTouchEvent(m);
 270             }
 271         });
 272     }
 273
 274     public void simulateCrash(MenuItem item) {
 275         debug("crash", "Will crash intentionally");
 276         new AsyncCrasher().execute();
 277     }
 278     public boolean onCreateOptionsMenu(Menu menu) {
 279         // Inflate the menu; this adds items to the action bar if it is present.
 280         getMenuInflater().inflate(R.menu.new_transaction, menu);
 281
 282         if (BuildConfig.DEBUG) {
 283             menu.findItem(R.id.action_simulate_crash).setVisible(true);
 284         }
 285         check_transaction_submittable();
 286
 287         return true;
 288     }
 289
 290     public void pickTransactionDate(View view) {
 291         DialogFragment picker = new DatePickerFragment();
 292         picker.show(getSupportFragmentManager(), "datePicker");
 293     }
 294
 295     public int dp2px(float dp) {
 296         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 297                 getResources().getDisplayMetrics()));
 298     }
 299     private void hookTextChangeListener(final TextView view) {
 300         view.addTextChangedListener(new TextWatcher() {
 301             @Override
 302             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 303
 304             }
 305
 306             @Override
 307             public void onTextChanged(CharSequence s, int start, int before, int count) {
 308
 309             }
 310
 311             @Override
 312             public void afterTextChanged(Editable s) {
 313 //                debug("input", "text changed");
 314                 check_transaction_submittable();
 315             }
 316         });
 317
 318     }
 319     private TableRow doAddAccountRow(boolean focus) {
 320         final AutoCompleteTextView acc = new AutoCompleteTextViewWithClear(this);
 321         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 322                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 323         acc.setHint(R.string.new_transaction_account_hint);
 324         acc.setWidth(0);
 325         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 326                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 327         acc.setSingleLine(true);
 328
 329         final EditText amt = new EditText(this);
 330         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 331                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 332         amt.setHint(R.string.new_transaction_amount_hint);
 333         amt.setWidth(0);
 334         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 335                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 336         amt.setMinWidth(dp2px(40));
 337         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 338         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 339         amt.setSelectAllOnFocus(true);
 340
 341         // forward navigation support
 342         TextView last_amt;
 343         int rows = table.getChildCount();
 344         if (rows > 0) {
 345             final TableRow last_row = (TableRow) table.getChildAt(rows - 1);
 346             last_amt = (TextView) last_row.getChildAt(1);
 347         }
 348         else {
 349             last_amt = tvDescription;
 350         }
 351         last_amt.setNextFocusForwardId(acc.getId());
 352         last_amt.setNextFocusRightId(acc.getId());
 353         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 354         acc.setNextFocusForwardId(amt.getId());
 355         acc.setNextFocusRightId(amt.getId());
 356
 357         final TableRow row = new TableRow(this);
 358         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 359                 TableRow.LayoutParams.MATCH_PARENT));
 360         row.setGravity(Gravity.BOTTOM);
 361         row.addView(acc);
 362         row.addView(amt);
 363         table.addView(row);
 364
 365         if (focus) acc.requestFocus();
 366
 367         hookSwipeListener(row);
 368         MLDB.hookAutocompletionAdapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt, null,
 369                 mProfile);
 370         hookTextChangeListener(acc);
 371         hookTextChangeListener(amt);
 372
 373         return row;
 374     }
 375     public void addTransactionAccountFromMenu(MenuItem item) {
 376         doAddAccountRow(true);
 377     }
 378     public void resetTransactionFromMenu(MenuItem item) {
 379         resetForm();
 380     }
 381     public void saveTransactionFromMenu(MenuItem item) {
 382         saveTransaction();
 383     }
 384     // rules:
 385     // 1) at least two account names
 386     // 2) each amount must have account name
 387     // 3) amounts must balance to 0, or
 388     // 3a) there must be exactly one empty amount
 389     // 4) empty accounts with empty amounts are ignored
 390     // 5) a row with an empty account name or empty amount is guaranteed to exist
 391     @SuppressLint("DefaultLocale")
 392     private void check_transaction_submittable() {
 393         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 394         int accounts = 0;
 395         int accounts_with_values = 0;
 396         int amounts = 0;
 397         int amounts_with_accounts = 0;
 398         int empty_rows = 0;
 399         TextView empty_amount = null;
 400         boolean single_empty_amount = false;
 401         boolean single_empty_amount_has_account = false;
 402         float running_total = 0f;
 403         boolean have_description =
 404                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 405                         .isEmpty();
 406
 407         try {
 408             for (int i = 0; i < table.getChildCount(); i++) {
 409                 TableRow row = (TableRow) table.getChildAt(i);
 410
 411                 TextView acc_name_v = (TextView) row.getChildAt(0);
 412                 TextView amount_v = (TextView) row.getChildAt(1);
 413                 String amt = String.valueOf(amount_v.getText());
 414                 String acc_name = String.valueOf(acc_name_v.getText());
 415                 acc_name = acc_name.trim();
 416
 417                 if (!acc_name.isEmpty()) {
 418                     accounts++;
 419
 420                     if (!amt.isEmpty()) {
 421                         accounts_with_values++;
 422                     }
 423                 }
 424                 else empty_rows++;
 425
 426                 if (amt.isEmpty()) {
 427                     amount_v.setHint(String.format("%1.2f", 0f));
 428                     if (empty_amount == null) {
 429                         empty_amount = amount_v;
 430                         single_empty_amount = true;
 431                         single_empty_amount_has_account = !acc_name.isEmpty();
 432                     }
 433                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 434                 }
 435                 else {
 436                     amounts++;
 437                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 438                     running_total += Float.valueOf(amt);
 439                 }
 440             }
 441
 442             if ((empty_rows == 0) &&
 443                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 444             {
 445                 doAddAccountRow(false);
 446             }
 447
 448             debug("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 449                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 450                                                "single_empty_with_acc=%s", accounts,
 451                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 452                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 453
 454             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 455                 (amounts_with_accounts == amounts) &&
 456                 (single_empty_amount && single_empty_amount_has_account || isZero(running_total)))
 457             {
 458                 if (fab != null) {
 459                     fab.show();
 460                     fab.setEnabled(true);
 461                 }
 462             }
 463             else {
 464                 if (fab != null) fab.hide();
 465             }
 466
 467             if (single_empty_amount) {
 468                 empty_amount.setHint(String.format("%1.2f",
 469                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 470             }
 471
 472         }
 473         catch (NumberFormatException e) {
 474             if (fab != null) fab.hide();
 475         }
 476         catch (Exception e) {
 477             e.printStackTrace();
 478             if (fab != null) fab.hide();
 479         }
 480     }
 481
 482     @Override
 483     public void done(String error) {
 484         progress.setVisibility(View.INVISIBLE);
 485         debug("visuals", "hiding progress");
 486
 487         if (error == null) resetForm();
 488         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 489                 BaseTransientBottomBar.LENGTH_LONG).show();
 490
 491         toggleAllEditing(true);
 492         check_transaction_submittable();
 493     }
 494
 495     private void resetForm() {
 496         tvDate.setText("");
 497         tvDescription.setText("");
 498
 499         tvDescription.requestFocus();
 500
 501         while (table.getChildCount() > 2) {
 502             table.removeViewAt(2);
 503         }
 504         for (int i = 0; i < 2; i++) {
 505             TableRow tr = (TableRow) table.getChildAt(i);
 506             if (tr == null) break;
 507
 508             ((TextView) tr.getChildAt(0)).setText("");
 509             ((TextView) tr.getChildAt(1)).setText("");
 510         }
 511     }
 512     @Override
 513     public void descriptionSelected(String description) {
 514         debug("descr selected", description);
 515         if (!inputStateIsInitial()) return;
 516
 517         String accFilter = mProfile.getPreferredAccountsFilter();
 518
 519         ArrayList<String> params = new ArrayList<>();
 520         StringBuilder sb = new StringBuilder(
 521                 "select t.profile, t.id from transactions t where t.description=?");
 522         params.add(description);
 523
 524         if (accFilter != null) {
 525             sb.append(" AND EXISTS (").append("SELECT 1 FROM transaction_accounts ta ")
 526                     .append("WHERE ta.profile = t.profile").append(" AND ta.transaction_id = t.id")
 527                     .append(" AND UPPER(ta.account_name) LIKE '%'||?||'%')");
 528             params.add(accFilter.toUpperCase());
 529         }
 530
 531         sb.append(" ORDER BY date desc limit 1");
 532
 533         final String sql = sb.toString();
 534         debug("descr", sql);
 535         debug("descr", params.toString());
 536
 537         try (Cursor c = App.getDatabase().rawQuery(sql, params.toArray(new String[]{}))) {
 538             if (!c.moveToNext()) return;
 539
 540             String profileUUID = c.getString(0);
 541             int transactionId = c.getInt(1);
 542             LedgerTransaction tr;
 543             MobileLedgerProfile profile = Data.getProfile(profileUUID);
 544             if (profile == null) throw new RuntimeException(String.format(
 545                     "Unable to find profile %s, which is supposed to contain " +
 546                     "transaction %d with description %s", profileUUID, transactionId, description));
 547
 548             tr = profile.loadTransaction(transactionId);
 549             ArrayList<LedgerTransactionAccount> accounts = tr.getAccounts();
 550             TableRow firstNegative = null;
 551             int negativeCount = 0;
 552             for (int i = 0; i < accounts.size(); i++) {
 553                 LedgerTransactionAccount acc = accounts.get(i);
 554                 TableRow row = (TableRow) table.getChildAt(i);
 555                 if (row == null) row = doAddAccountRow(false);
 556
 557                 ((TextView) row.getChildAt(0)).setText(acc.getAccountName());
 558                 ((TextView) row.getChildAt(1))
 559                         .setText(String.format(Locale.US, "%1.2f", acc.getAmount()));
 560
 561                 if (acc.getAmount() < 0.005) {
 562                     if (firstNegative == null) firstNegative = row;
 563                     negativeCount++;
 564                 }
 565             }
 566
 567             if (negativeCount == 1) {
 568                 ((TextView) firstNegative.getChildAt(1)).setText(null);
 569             }
 570
 571             check_transaction_submittable();
 572
 573             EditText firstAmount = (EditText) ((TableRow) table.getChildAt(0)).getChildAt(1);
 574             String amtString = String.valueOf(firstAmount.getText());
 575             firstAmount.requestFocus();
 576             firstAmount.setSelection(0, amtString.length());
 577         }
 578
 579     }
 580     private boolean inputStateIsInitial() {
 581         table = findViewById(R.id.new_transaction_accounts_table);
 582
 583         if (table.getChildCount() != 2) return false;
 584
 585         for (int i = 0; i < 2; i++) {
 586             TableRow row = (TableRow) table.getChildAt(i);
 587             if (((TextView) row.getChildAt(0)).getText().length() > 0) return false;
 588             if (((TextView) row.getChildAt(1)).getText().length() > 0) return false;
 589         }
 590
 591         return true;
 592     }
 593     private class AsyncCrasher extends AsyncTask<Void, Void, Void> {
 594         @Override
 595         protected Void doInBackground(Void... voids) {
 596             throw new RuntimeException("Simulated crash");
 597         }
 598     }
 599 }