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.Log;
  28 import android.util.TypedValue;
  29 import android.view.Gravity;
  30 import android.view.Menu;
  31 import android.view.MenuItem;
  32 import android.view.MotionEvent;
  33 import android.view.View;
  34 import android.view.inputmethod.EditorInfo;
  35 import android.widget.AutoCompleteTextView;
  36 import android.widget.EditText;
  37 import android.widget.ProgressBar;
  38 import android.widget.TableLayout;
  39 import android.widget.TableRow;
  40 import android.widget.TextView;
  41 import android.widget.Toast;
  42
  43 import com.google.android.material.floatingactionbutton.FloatingActionButton;
  44 import com.google.android.material.snackbar.BaseTransientBottomBar;
  45 import com.google.android.material.snackbar.Snackbar;
  46
  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.SaveTransactionTask;
  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.DatePickerFragment;
  57 import net.ktnx.mobileledger.ui.OnSwipeTouchListener;
  58 import net.ktnx.mobileledger.utils.Globals;
  59 import net.ktnx.mobileledger.utils.LockHolder;
  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 /*
  72  * TODO: nicer progress while transaction is submitted
  73  * TODO: reports
  74  * TODO: get rid of the custom session/cookie and auth code?
  75  *         (the last problem with the POST was the missing content-length header)
  76  *  */
  77
  78 public class NewTransactionActivity extends ProfileThemedActivity
  79         implements TaskCallback, DescriptionSelectedCallback {
  80     private static SaveTransactionTask saver;
  81     private TableLayout table;
  82     private ProgressBar progress;
  83     private FloatingActionButton fab;
  84     private TextView tvDate;
  85     private AutoCompleteTextView tvDescription;
  86     private static boolean isZero(float f) {
  87         return (f < 0.005) && (f > -0.005);
  88     }
  89     @Override
  90     protected void onCreate(Bundle savedInstanceState) {
  91         super.onCreate(savedInstanceState);
  92
  93         setContentView(R.layout.activity_new_transaction);
  94         Toolbar toolbar = findViewById(R.id.toolbar);
  95         setSupportActionBar(toolbar);
  96         toolbar.setSubtitle(Data.profile.get().getName());
  97
  98         tvDate = findViewById(R.id.new_transaction_date);
  99         tvDate.setOnFocusChangeListener((v, hasFocus) -> {
 100             if (hasFocus) pickTransactionDate(v);
 101         });
 102         tvDescription = findViewById(R.id.new_transaction_description);
 103         MLDB.hookAutocompletionAdapter(this, tvDescription, MLDB.DESCRIPTION_HISTORY_TABLE,
 104                 "description", false, findViewById(R.id.new_transaction_acc_1), this);
 105         hookTextChangeListener(tvDescription);
 106
 107         progress = findViewById(R.id.save_transaction_progress);
 108         fab = findViewById(R.id.fab);
 109         fab.setOnClickListener(v -> saveTransaction());
 110
 111         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
 112         table = findViewById(R.id.new_transaction_accounts_table);
 113         for (int i = 0; i < table.getChildCount(); i++) {
 114             TableRow row = (TableRow) table.getChildAt(i);
 115             AutoCompleteTextView tvAccountName = (AutoCompleteTextView) row.getChildAt(0);
 116             TextView tvAmount = (TextView) row.getChildAt(1);
 117             hookSwipeListener(row);
 118             MLDB.hookAutocompletionAdapter(this, tvAccountName, MLDB.ACCOUNTS_TABLE, "name", true,
 119                     tvAmount, null);
 120             hookTextChangeListener(tvAccountName);
 121             hookTextChangeListener(tvAmount);
 122 //            Log.d("swipe", "hooked to row "+i);
 123         }
 124     }
 125
 126     @Override
 127     public void finish() {
 128         super.finish();
 129         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 130     }
 131
 132     @Override
 133     public boolean onOptionsItemSelected(MenuItem item) {
 134         switch (item.getItemId()) {
 135             case android.R.id.home:
 136                 finish();
 137                 return true;
 138         }
 139         return super.onOptionsItemSelected(item);
 140     }
 141     @Override
 142     protected void onStart() {
 143         super.onStart();
 144         if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 145     }
 146     public void saveTransaction() {
 147         if (fab != null) fab.setEnabled(false);
 148         toggleAllEditing(false);
 149         progress.setVisibility(View.VISIBLE);
 150         try {
 151
 152             saver = new SaveTransactionTask(this);
 153
 154             String dateString = tvDate.getText().toString();
 155             Date date;
 156             if (dateString.isEmpty()) date = new Date();
 157             else date = Globals.parseLedgerDate(dateString);
 158             LedgerTransaction tr = new LedgerTransaction(date, tvDescription.getText().toString());
 159
 160             TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 161             for (int i = 0; i < table.getChildCount(); i++) {
 162                 TableRow row = (TableRow) table.getChildAt(i);
 163                 String acc = ((TextView) row.getChildAt(0)).getText().toString();
 164                 String amt = ((TextView) row.getChildAt(1)).getText().toString();
 165                 LedgerTransactionAccount item =
 166                         amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 167                                          : new LedgerTransactionAccount(acc);
 168
 169                 tr.addAccount(item);
 170             }
 171             saver.execute(tr);
 172         }
 173         catch (ParseException e) {
 174             Log.d("new-transaction", "Parse error", e);
 175             Toast.makeText(this, getResources().getString(R.string.error_invalid_date),
 176                     Toast.LENGTH_LONG).show();
 177             tvDate.requestFocus();
 178
 179             progress.setVisibility(View.GONE);
 180             toggleAllEditing(true);
 181             if (fab != null) fab.setEnabled(true);
 182         }
 183         catch (Exception e) {
 184             Log.d("new-transaction", "Unknown error", e);
 185
 186             progress.setVisibility(View.GONE);
 187             toggleAllEditing(true);
 188             if (fab != null) fab.setEnabled(true);
 189         }
 190     }
 191     private void toggleAllEditing(boolean enabled) {
 192         tvDate.setEnabled(enabled);
 193         tvDescription.setEnabled(enabled);
 194         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 195         for (int i = 0; i < table.getChildCount(); i++) {
 196             TableRow row = (TableRow) table.getChildAt(i);
 197             for (int j = 0; j < row.getChildCount(); j++) {
 198                 row.getChildAt(j).setEnabled(enabled);
 199             }
 200         }
 201     }
 202     private void hookSwipeListener(final TableRow row) {
 203         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 204             private void onSwipeAside() {
 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             public void onSwipeLeft() {
 239                 onSwipeAside();
 240             }
 241             public void onSwipeRight() {
 242                 onSwipeAside();
 243             }
 244             //            @Override
 245 //            public boolean performClick(View view, MotionEvent m) {
 246 //                return true;
 247 //            }
 248             public boolean onTouch(View view, MotionEvent m) {
 249                 return gestureDetector.onTouchEvent(m);
 250             }
 251         });
 252     }
 253
 254     public boolean simulateCrash(MenuItem item) {
 255         Log.d("crash", "Will crash intentionally");
 256         new AsyncCrasher().execute();
 257         return true;
 258     }
 259     public boolean onCreateOptionsMenu(Menu menu) {
 260         // Inflate the menu; this adds items to the action bar if it is present.
 261         getMenuInflater().inflate(R.menu.new_transaction, menu);
 262
 263         if (BuildConfig.DEBUG) {
 264             menu.findItem(R.id.action_simulate_crash).setVisible(true);
 265         }
 266         check_transaction_submittable();
 267
 268         return true;
 269     }
 270
 271     public void pickTransactionDate(View view) {
 272         DialogFragment picker = new DatePickerFragment();
 273         picker.show(getSupportFragmentManager(), "datePicker");
 274     }
 275
 276     public int dp2px(float dp) {
 277         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 278                 getResources().getDisplayMetrics()));
 279     }
 280     private void hookTextChangeListener(final TextView view) {
 281         view.addTextChangedListener(new TextWatcher() {
 282             @Override
 283             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 284
 285             }
 286
 287             @Override
 288             public void onTextChanged(CharSequence s, int start, int before, int count) {
 289
 290             }
 291
 292             @Override
 293             public void afterTextChanged(Editable s) {
 294 //                Log.d("input", "text changed");
 295                 check_transaction_submittable();
 296             }
 297         });
 298
 299     }
 300     private TableRow doAddAccountRow(boolean focus) {
 301         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 302         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 303                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 304         acc.setHint(R.string.new_transaction_account_hint);
 305         acc.setWidth(0);
 306         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 307                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 308         acc.setSingleLine(true);
 309
 310         final EditText amt = new EditText(this);
 311         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 312                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 313         amt.setHint(R.string.new_transaction_amount_hint);
 314         amt.setWidth(0);
 315         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 316                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 317         amt.setMinWidth(dp2px(40));
 318         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 319         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 320         amt.setSelectAllOnFocus(true);
 321
 322         // forward navigation support
 323         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 324         final TextView last_amt = (TextView) last_row.getChildAt(1);
 325         last_amt.setNextFocusForwardId(acc.getId());
 326         last_amt.setNextFocusRightId(acc.getId());
 327         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 328         acc.setNextFocusForwardId(amt.getId());
 329         acc.setNextFocusRightId(amt.getId());
 330
 331         final TableRow row = new TableRow(this);
 332         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 333                 TableRow.LayoutParams.MATCH_PARENT));
 334         row.setGravity(Gravity.BOTTOM);
 335         row.addView(acc);
 336         row.addView(amt);
 337         table.addView(row);
 338
 339         if (focus) acc.requestFocus();
 340
 341         hookSwipeListener(row);
 342         MLDB.hookAutocompletionAdapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt, null);
 343         hookTextChangeListener(acc);
 344         hookTextChangeListener(amt);
 345
 346         return row;
 347     }
 348     public void addTransactionAccountFromMenu(MenuItem item) {
 349         doAddAccountRow(true);
 350     }
 351     public void resetTransactionFromMenu(MenuItem item) {
 352         resetForm();
 353     }
 354     public void saveTransactionFromMenu(MenuItem item) {
 355         saveTransaction();
 356     }
 357     // rules:
 358     // 1) at least two account names
 359     // 2) each amount must have account name
 360     // 3) amounts must balance to 0, or
 361     // 3a) there must be exactly one empty amount
 362     // 4) empty accounts with empty amounts are ignored
 363     // 5) a row with an empty account name or empty amount is guaranteed to exist
 364     @SuppressLint("DefaultLocale")
 365     private void check_transaction_submittable() {
 366         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 367         int accounts = 0;
 368         int accounts_with_values = 0;
 369         int amounts = 0;
 370         int amounts_with_accounts = 0;
 371         int empty_rows = 0;
 372         TextView empty_amount = null;
 373         boolean single_empty_amount = false;
 374         boolean single_empty_amount_has_account = false;
 375         float running_total = 0f;
 376         boolean have_description =
 377                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 378                         .isEmpty();
 379
 380         try {
 381             for (int i = 0; i < table.getChildCount(); i++) {
 382                 TableRow row = (TableRow) table.getChildAt(i);
 383
 384                 TextView acc_name_v = (TextView) row.getChildAt(0);
 385                 TextView amount_v = (TextView) row.getChildAt(1);
 386                 String amt = String.valueOf(amount_v.getText());
 387                 String acc_name = String.valueOf(acc_name_v.getText());
 388                 acc_name = acc_name.trim();
 389
 390                 if (!acc_name.isEmpty()) {
 391                     accounts++;
 392
 393                     if (!amt.isEmpty()) {
 394                         accounts_with_values++;
 395                     }
 396                 }
 397                 else empty_rows++;
 398
 399                 if (amt.isEmpty()) {
 400                     amount_v.setHint(String.format("%1.2f", 0f));
 401                     if (empty_amount == null) {
 402                         empty_amount = amount_v;
 403                         single_empty_amount = true;
 404                         single_empty_amount_has_account = !acc_name.isEmpty();
 405                     }
 406                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 407                 }
 408                 else {
 409                     amounts++;
 410                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 411                     running_total += Float.valueOf(amt);
 412                 }
 413             }
 414
 415             if ((empty_rows == 0) &&
 416                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 417             {
 418                 doAddAccountRow(false);
 419             }
 420
 421             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 422                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 423                                                "single_empty_with_acc=%s", accounts,
 424                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 425                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 426
 427             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 428                 (amounts_with_accounts == amounts) &&
 429                 (single_empty_amount && single_empty_amount_has_account || isZero(running_total)))
 430             {
 431                 if (fab != null) {
 432                     fab.show();
 433                     fab.setEnabled(true);
 434                 }
 435             }
 436             else {
 437                 if (fab != null) fab.hide();
 438             }
 439
 440             if (single_empty_amount) {
 441                 empty_amount.setHint(String.format("%1.2f",
 442                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 443             }
 444
 445         }
 446         catch (NumberFormatException e) {
 447             if (fab != null) fab.hide();
 448         }
 449         catch (Exception e) {
 450             e.printStackTrace();
 451             if (fab != null) fab.hide();
 452         }
 453     }
 454
 455     @Override
 456     public void done(String error) {
 457         progress.setVisibility(View.INVISIBLE);
 458         Log.d("visuals", "hiding progress");
 459
 460         if (error == null) resetForm();
 461         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 462                 BaseTransientBottomBar.LENGTH_LONG).show();
 463
 464         toggleAllEditing(true);
 465         check_transaction_submittable();
 466     }
 467
 468     private void resetForm() {
 469         tvDate.setText("");
 470         tvDescription.setText("");
 471
 472         tvDescription.requestFocus();
 473
 474         while (table.getChildCount() > 2) {
 475             table.removeViewAt(2);
 476         }
 477         for (int i = 0; i < 2; i++) {
 478             TableRow tr = (TableRow) table.getChildAt(i);
 479             if (tr == null) break;
 480
 481             ((TextView) tr.getChildAt(0)).setText("");
 482             ((TextView) tr.getChildAt(1)).setText("");
 483         }
 484     }
 485     @Override
 486     public void descriptionSelected(String description) {
 487         Log.d("descr selected", description);
 488         if (!inputStateIsInitial()) return;
 489
 490         try (Cursor c = MLDB.getDatabase().rawQuery(
 491                 "select profile, id from transactions where description=? order by date desc " +
 492                 "limit 1", new String[]{description}))
 493         {
 494             if (!c.moveToNext()) return;
 495
 496             String profileUUID = c.getString(0);
 497             int transactionId = c.getInt(1);
 498             LedgerTransaction tr;
 499             try (LockHolder lh = Data.profiles.lockForReading()) {
 500                 MobileLedgerProfile profile = null;
 501                 for (int i = 0; i < Data.profiles.size(); i++) {
 502                     MobileLedgerProfile p = Data.profiles.get(i);
 503                     if (p.getUuid().equals(profileUUID)) {
 504                         profile = p;
 505                         break;
 506                     }
 507                 }
 508                 if (profile == null) throw new RuntimeException(String.format(
 509                         "Unable to find profile %s, which is supposed to contain " +
 510                         "transaction %d with description %s", profileUUID, transactionId,
 511                         description));
 512
 513                 tr = profile.loadTransaction(transactionId);
 514             }
 515             int i = 0;
 516             table = findViewById(R.id.new_transaction_accounts_table);
 517             ArrayList<LedgerTransactionAccount> accounts = tr.getAccounts();
 518             TableRow firstNegative = null;
 519             int negativeCount = 0;
 520             for (i = 0; i < accounts.size(); i++) {
 521                 LedgerTransactionAccount acc = accounts.get(i);
 522                 TableRow row = (TableRow) table.getChildAt(i);
 523                 if (row == null) row = doAddAccountRow(false);
 524
 525                 ((TextView) row.getChildAt(0)).setText(acc.getAccountName());
 526                 ((TextView) row.getChildAt(1))
 527                         .setText(String.format(Locale.US, "%1.2f", acc.getAmount()));
 528
 529                 if (acc.getAmount() < 0.005) {
 530                     if (firstNegative == null) firstNegative = row;
 531                     negativeCount++;
 532                 }
 533             }
 534
 535             if (negativeCount == 1) {
 536                 ((TextView) firstNegative.getChildAt(1)).setText(null);
 537             }
 538
 539             check_transaction_submittable();
 540
 541             EditText firstAmount = (EditText) ((TableRow) table.getChildAt(0)).getChildAt(1);
 542             String amtString = String.valueOf(firstAmount.getText());
 543             firstAmount.requestFocus();
 544             firstAmount.setSelection(0, amtString.length());
 545         }
 546
 547     }
 548     private boolean inputStateIsInitial() {
 549         table = findViewById(R.id.new_transaction_accounts_table);
 550
 551         if (table.getChildCount() != 2) return false;
 552
 553         for (int i = 0; i < 2; i++) {
 554             TableRow row = (TableRow) table.getChildAt(i);
 555             if (((TextView) row.getChildAt(0)).getText().length() > 0) return false;
 556             if (((TextView) row.getChildAt(1)).getText().length() > 0) return false;
 557         }
 558
 559         return true;
 560     }
 561     private class AsyncCrasher extends AsyncTask<Void, Void, Void> {
 562         @Override
 563         protected Void doInBackground(Void... voids) {
 564             throw new RuntimeException("Simulated crash");
 565         }
 566     }
 567 }