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  * TODO: nicer swiping removal with visual feedback
  77  *  */
  78
  79 public class NewTransactionActivity extends ProfileThemedActivity
  80         implements TaskCallback, DescriptionSelectedCallback {
  81     private static SaveTransactionTask saver;
  82     private TableLayout table;
  83     private ProgressBar progress;
  84     private FloatingActionButton fab;
  85     private TextView tvDate;
  86     private AutoCompleteTextView tvDescription;
  87     private static boolean isZero(float f) {
  88         return (f < 0.005) && (f > -0.005);
  89     }
  90     @Override
  91     protected void onCreate(Bundle savedInstanceState) {
  92         super.onCreate(savedInstanceState);
  93
  94         setContentView(R.layout.activity_new_transaction);
  95         Toolbar toolbar = findViewById(R.id.toolbar);
  96         setSupportActionBar(toolbar);
  97         toolbar.setSubtitle(Data.profile.get().getName());
  98
  99         tvDate = findViewById(R.id.new_transaction_date);
 100         tvDate.setOnFocusChangeListener((v, hasFocus) -> {
 101             if (hasFocus) pickTransactionDate(v);
 102         });
 103         tvDescription = findViewById(R.id.new_transaction_description);
 104         MLDB.hookAutocompletionAdapter(this, tvDescription, MLDB.DESCRIPTION_HISTORY_TABLE,
 105                 "description", false, findViewById(R.id.new_transaction_acc_1), this);
 106         hookTextChangeListener(tvDescription);
 107
 108         progress = findViewById(R.id.save_transaction_progress);
 109         fab = findViewById(R.id.fab);
 110         fab.setOnClickListener(v -> saveTransaction());
 111
 112         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
 113         table = findViewById(R.id.new_transaction_accounts_table);
 114         for (int i = 0; i < table.getChildCount(); i++) {
 115             TableRow row = (TableRow) table.getChildAt(i);
 116             AutoCompleteTextView tvAccountName = (AutoCompleteTextView) row.getChildAt(0);
 117             TextView tvAmount = (TextView) row.getChildAt(1);
 118             hookSwipeListener(row);
 119             MLDB.hookAutocompletionAdapter(this, tvAccountName, MLDB.ACCOUNTS_TABLE, "name", true,
 120                     tvAmount, null);
 121             hookTextChangeListener(tvAccountName);
 122             hookTextChangeListener(tvAmount);
 123 //            Log.d("swipe", "hooked to row "+i);
 124         }
 125     }
 126
 127     @Override
 128     public void finish() {
 129         super.finish();
 130         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 131     }
 132
 133     @Override
 134     public boolean onOptionsItemSelected(MenuItem item) {
 135         switch (item.getItemId()) {
 136             case android.R.id.home:
 137                 finish();
 138                 return true;
 139         }
 140         return super.onOptionsItemSelected(item);
 141     }
 142     @Override
 143     protected void onStart() {
 144         super.onStart();
 145         if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 146     }
 147     public void saveTransaction() {
 148         if (fab != null) fab.setEnabled(false);
 149         toggleAllEditing(false);
 150         progress.setVisibility(View.VISIBLE);
 151         try {
 152
 153             saver = new SaveTransactionTask(this);
 154
 155             String dateString = tvDate.getText().toString();
 156             Date date;
 157             if (dateString.isEmpty()) date = new Date();
 158             else date = Globals.parseLedgerDate(dateString);
 159             LedgerTransaction tr = new LedgerTransaction(date, tvDescription.getText().toString());
 160
 161             TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 162             for (int i = 0; i < table.getChildCount(); i++) {
 163                 TableRow row = (TableRow) table.getChildAt(i);
 164                 String acc = ((TextView) row.getChildAt(0)).getText().toString();
 165                 String amt = ((TextView) row.getChildAt(1)).getText().toString();
 166                 LedgerTransactionAccount item =
 167                         amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 168                                          : new LedgerTransactionAccount(acc);
 169
 170                 tr.addAccount(item);
 171             }
 172             saver.execute(tr);
 173         }
 174         catch (ParseException e) {
 175             Log.d("new-transaction", "Parse error", e);
 176             Toast.makeText(this, getResources().getString(R.string.error_invalid_date),
 177                     Toast.LENGTH_LONG).show();
 178             tvDate.requestFocus();
 179
 180             progress.setVisibility(View.GONE);
 181             toggleAllEditing(true);
 182             if (fab != null) fab.setEnabled(true);
 183         }
 184         catch (Exception e) {
 185             Log.d("new-transaction", "Unknown error", e);
 186
 187             progress.setVisibility(View.GONE);
 188             toggleAllEditing(true);
 189             if (fab != null) fab.setEnabled(true);
 190         }
 191     }
 192     private void toggleAllEditing(boolean enabled) {
 193         tvDate.setEnabled(enabled);
 194         tvDescription.setEnabled(enabled);
 195         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 196         for (int i = 0; i < table.getChildCount(); i++) {
 197             TableRow row = (TableRow) table.getChildAt(i);
 198             for (int j = 0; j < row.getChildCount(); j++) {
 199                 row.getChildAt(j).setEnabled(enabled);
 200             }
 201         }
 202     }
 203     private void hookSwipeListener(final TableRow row) {
 204         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 205             private void onSwipeAside() {
 206                 if (table.getChildCount() > 2) {
 207                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 208                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 209                     TextView prev_amt =
 210                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : tvDescription;
 211                     TextView next_acc =
 212                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 213
 214                     if (next_acc == null) {
 215                         prev_amt.setNextFocusRightId(R.id.none);
 216                         prev_amt.setNextFocusForwardId(R.id.none);
 217                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 218                     }
 219                     else {
 220                         prev_amt.setNextFocusRightId(next_acc.getId());
 221                         prev_amt.setNextFocusForwardId(next_acc.getId());
 222                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 223                     }
 224
 225                     if (row.hasFocus()) {
 226                         if (next_acc != null) next_acc.requestFocus();
 227                         else prev_amt.requestFocus();
 228                     }
 229
 230                     table.removeView(row);
 231                     check_transaction_submittable();
 232 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 233                 }
 234                 else {
 235                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 236                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 237                 }
 238             }
 239             public void onSwipeLeft() {
 240                 onSwipeAside();
 241             }
 242             public void onSwipeRight() {
 243                 onSwipeAside();
 244             }
 245             //            @Override
 246 //            public boolean performClick(View view, MotionEvent m) {
 247 //                return true;
 248 //            }
 249             public boolean onTouch(View view, MotionEvent m) {
 250                 return gestureDetector.onTouchEvent(m);
 251             }
 252         });
 253     }
 254
 255     public boolean simulateCrash(MenuItem item) {
 256         Log.d("crash", "Will crash intentionally");
 257         new AsyncCrasher().execute();
 258         return true;
 259     }
 260     public boolean onCreateOptionsMenu(Menu menu) {
 261         // Inflate the menu; this adds items to the action bar if it is present.
 262         getMenuInflater().inflate(R.menu.new_transaction, menu);
 263
 264         if (BuildConfig.DEBUG) {
 265             menu.findItem(R.id.action_simulate_crash).setVisible(true);
 266         }
 267         check_transaction_submittable();
 268
 269         return true;
 270     }
 271
 272     public void pickTransactionDate(View view) {
 273         DialogFragment picker = new DatePickerFragment();
 274         picker.show(getSupportFragmentManager(), "datePicker");
 275     }
 276
 277     public int dp2px(float dp) {
 278         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 279                 getResources().getDisplayMetrics()));
 280     }
 281     private void hookTextChangeListener(final TextView view) {
 282         view.addTextChangedListener(new TextWatcher() {
 283             @Override
 284             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 285
 286             }
 287
 288             @Override
 289             public void onTextChanged(CharSequence s, int start, int before, int count) {
 290
 291             }
 292
 293             @Override
 294             public void afterTextChanged(Editable s) {
 295 //                Log.d("input", "text changed");
 296                 check_transaction_submittable();
 297             }
 298         });
 299
 300     }
 301     private TableRow doAddAccountRow(boolean focus) {
 302         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 303         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 304                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 305         acc.setHint(R.string.new_transaction_account_hint);
 306         acc.setWidth(0);
 307         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 308                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 309         acc.setSingleLine(true);
 310
 311         final EditText amt = new EditText(this);
 312         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 313                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 314         amt.setHint(R.string.new_transaction_amount_hint);
 315         amt.setWidth(0);
 316         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 317                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 318         amt.setMinWidth(dp2px(40));
 319         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 320         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 321         amt.setSelectAllOnFocus(true);
 322
 323         // forward navigation support
 324         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 325         final TextView last_amt = (TextView) last_row.getChildAt(1);
 326         last_amt.setNextFocusForwardId(acc.getId());
 327         last_amt.setNextFocusRightId(acc.getId());
 328         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 329         acc.setNextFocusForwardId(amt.getId());
 330         acc.setNextFocusRightId(amt.getId());
 331
 332         final TableRow row = new TableRow(this);
 333         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 334                 TableRow.LayoutParams.MATCH_PARENT));
 335         row.setGravity(Gravity.BOTTOM);
 336         row.addView(acc);
 337         row.addView(amt);
 338         table.addView(row);
 339
 340         if (focus) acc.requestFocus();
 341
 342         hookSwipeListener(row);
 343         MLDB.hookAutocompletionAdapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt, null);
 344         hookTextChangeListener(acc);
 345         hookTextChangeListener(amt);
 346
 347         return row;
 348     }
 349     public void addTransactionAccountFromMenu(MenuItem item) {
 350         doAddAccountRow(true);
 351     }
 352     public void resetTransactionFromMenu(MenuItem item) {
 353         resetForm();
 354     }
 355     public void saveTransactionFromMenu(MenuItem item) {
 356         saveTransaction();
 357     }
 358     // rules:
 359     // 1) at least two account names
 360     // 2) each amount must have account name
 361     // 3) amounts must balance to 0, or
 362     // 3a) there must be exactly one empty amount
 363     // 4) empty accounts with empty amounts are ignored
 364     // 5) a row with an empty account name or empty amount is guaranteed to exist
 365     @SuppressLint("DefaultLocale")
 366     private void check_transaction_submittable() {
 367         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 368         int accounts = 0;
 369         int accounts_with_values = 0;
 370         int amounts = 0;
 371         int amounts_with_accounts = 0;
 372         int empty_rows = 0;
 373         TextView empty_amount = null;
 374         boolean single_empty_amount = false;
 375         boolean single_empty_amount_has_account = false;
 376         float running_total = 0f;
 377         boolean have_description =
 378                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 379                         .isEmpty();
 380
 381         try {
 382             for (int i = 0; i < table.getChildCount(); i++) {
 383                 TableRow row = (TableRow) table.getChildAt(i);
 384
 385                 TextView acc_name_v = (TextView) row.getChildAt(0);
 386                 TextView amount_v = (TextView) row.getChildAt(1);
 387                 String amt = String.valueOf(amount_v.getText());
 388                 String acc_name = String.valueOf(acc_name_v.getText());
 389                 acc_name = acc_name.trim();
 390
 391                 if (!acc_name.isEmpty()) {
 392                     accounts++;
 393
 394                     if (!amt.isEmpty()) {
 395                         accounts_with_values++;
 396                     }
 397                 }
 398                 else empty_rows++;
 399
 400                 if (amt.isEmpty()) {
 401                     amount_v.setHint(String.format("%1.2f", 0f));
 402                     if (empty_amount == null) {
 403                         empty_amount = amount_v;
 404                         single_empty_amount = true;
 405                         single_empty_amount_has_account = !acc_name.isEmpty();
 406                     }
 407                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 408                 }
 409                 else {
 410                     amounts++;
 411                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 412                     running_total += Float.valueOf(amt);
 413                 }
 414             }
 415
 416             if ((empty_rows == 0) &&
 417                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 418             {
 419                 doAddAccountRow(false);
 420             }
 421
 422             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 423                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 424                                                "single_empty_with_acc=%s", accounts,
 425                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 426                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 427
 428             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 429                 (amounts_with_accounts == amounts) &&
 430                 (single_empty_amount && single_empty_amount_has_account || isZero(running_total)))
 431             {
 432                 if (fab != null) {
 433                     fab.show();
 434                     fab.setEnabled(true);
 435                 }
 436             }
 437             else {
 438                 if (fab != null) fab.hide();
 439             }
 440
 441             if (single_empty_amount) {
 442                 empty_amount.setHint(String.format("%1.2f",
 443                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 444             }
 445
 446         }
 447         catch (NumberFormatException e) {
 448             if (fab != null) fab.hide();
 449         }
 450         catch (Exception e) {
 451             e.printStackTrace();
 452             if (fab != null) fab.hide();
 453         }
 454     }
 455
 456     @Override
 457     public void done(String error) {
 458         progress.setVisibility(View.INVISIBLE);
 459         Log.d("visuals", "hiding progress");
 460
 461         if (error == null) resetForm();
 462         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 463                 BaseTransientBottomBar.LENGTH_LONG).show();
 464
 465         toggleAllEditing(true);
 466         check_transaction_submittable();
 467     }
 468
 469     private void resetForm() {
 470         tvDate.setText("");
 471         tvDescription.setText("");
 472
 473         tvDescription.requestFocus();
 474
 475         while (table.getChildCount() > 2) {
 476             table.removeViewAt(2);
 477         }
 478         for (int i = 0; i < 2; i++) {
 479             TableRow tr = (TableRow) table.getChildAt(i);
 480             if (tr == null) break;
 481
 482             ((TextView) tr.getChildAt(0)).setText("");
 483             ((TextView) tr.getChildAt(1)).setText("");
 484         }
 485     }
 486     @Override
 487     public void descriptionSelected(String description) {
 488         Log.d("descr selected", description);
 489         if (!inputStateIsInitial()) return;
 490
 491         try (Cursor c = MLDB.getDatabase().rawQuery(
 492                 "select profile, id from transactions where description=? order by date desc " +
 493                 "limit 1", new String[]{description}))
 494         {
 495             if (!c.moveToNext()) return;
 496
 497             String profileUUID = c.getString(0);
 498             int transactionId = c.getInt(1);
 499             LedgerTransaction tr;
 500             try(LockHolder lh = Data.profiles.lockForReading()) {
 501                 MobileLedgerProfile profile = null;
 502                 for (int i = 0; i < Data.profiles.size(); i++) {
 503                     MobileLedgerProfile p = Data.profiles.get(i);
 504                     if (p.getUuid().equals(profileUUID)) {
 505                         profile = p;
 506                         break;
 507                     }
 508                 }
 509                 if (profile == null) throw new RuntimeException(String.format(
 510                         "Unable to find profile %s, which is supposed to contain " +
 511                         "transaction %d with description %s", profileUUID, transactionId,
 512                         description));
 513
 514                 tr = profile.loadTransaction(transactionId);
 515             }
 516             int i = 0;
 517             table = findViewById(R.id.new_transaction_accounts_table);
 518             ArrayList<LedgerTransactionAccount> accounts = tr.getAccounts();
 519             TableRow firstNegative = null;
 520             int negativeCount = 0;
 521             for (i = 0; i < accounts.size(); i++) {
 522                 LedgerTransactionAccount acc = accounts.get(i);
 523                 TableRow row = (TableRow) table.getChildAt(i);
 524                 if (row == null) row = doAddAccountRow(false);
 525
 526                 ((TextView) row.getChildAt(0)).setText(acc.getAccountName());
 527                 ((TextView) row.getChildAt(1))
 528                         .setText(String.format(Locale.US, "%1.2f", acc.getAmount()));
 529
 530                 if (acc.getAmount() < 0.005) {
 531                     if (firstNegative == null) firstNegative = row;
 532                     negativeCount++;
 533                 }
 534             }
 535
 536             if (negativeCount == 1) {
 537                 ((TextView) firstNegative.getChildAt(1)).setText(null);
 538             }
 539
 540             check_transaction_submittable();
 541
 542             EditText firstAmount = (EditText) ((TableRow) table.getChildAt(0)).getChildAt(1);
 543             String amtString = String.valueOf(firstAmount.getText());
 544             firstAmount.requestFocus();
 545             firstAmount.setSelection(0, amtString.length());
 546         }
 547
 548     }
 549     private boolean inputStateIsInitial() {
 550         table = findViewById(R.id.new_transaction_accounts_table);
 551
 552         if (table.getChildCount() != 2) return false;
 553
 554         for (int i = 0; i < 2; i++) {
 555             TableRow row = (TableRow) table.getChildAt(i);
 556             if (((TextView) row.getChildAt(0)).getText().length() > 0) return false;
 557             if (((TextView) row.getChildAt(1)).getText().length() > 0) return false;
 558         }
 559
 560         return true;
 561     }
 562     private class AsyncCrasher extends AsyncTask<Void, Void, Void>{
 563         @Override
 564         protected Void doInBackground(Void... voids) {
 565             throw new RuntimeException("Simulated crash");
 566         }
 567     }
 568 }