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.support.design.widget.BaseTransientBottomBar;
  25 import android.support.design.widget.FloatingActionButton;
  26 import android.support.design.widget.Snackbar;
  27 import android.support.v4.app.DialogFragment;
  28 import android.support.v7.widget.Toolbar;
  29 import android.text.Editable;
  30 import android.text.InputType;
  31 import android.text.TextWatcher;
  32 import android.util.Log;
  33 import android.util.TypedValue;
  34 import android.view.Gravity;
  35 import android.view.Menu;
  36 import android.view.MenuItem;
  37 import android.view.MotionEvent;
  38 import android.view.View;
  39 import android.view.inputmethod.EditorInfo;
  40 import android.widget.AutoCompleteTextView;
  41 import android.widget.EditText;
  42 import android.widget.ProgressBar;
  43 import android.widget.TableLayout;
  44 import android.widget.TableRow;
  45 import android.widget.TextView;
  46 import android.widget.Toast;
  47
  48 import net.ktnx.mobileledger.BuildConfig;
  49 import net.ktnx.mobileledger.R;
  50 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  51 import net.ktnx.mobileledger.async.SaveTransactionTask;
  52 import net.ktnx.mobileledger.async.TaskCallback;
  53 import net.ktnx.mobileledger.model.Data;
  54 import net.ktnx.mobileledger.model.LedgerTransaction;
  55 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  56 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  57 import net.ktnx.mobileledger.ui.DatePickerFragment;
  58 import net.ktnx.mobileledger.ui.OnSwipeTouchListener;
  59 import net.ktnx.mobileledger.utils.Globals;
  60 import net.ktnx.mobileledger.utils.MLDB;
  61
  62 import java.text.ParseException;
  63 import java.util.ArrayList;
  64 import java.util.Date;
  65 import java.util.List;
  66 import java.util.Locale;
  67 import java.util.Objects;
  68
  69 /*
  70  * TODO: nicer progress while transaction is submitted
  71  * TODO: reports
  72  * TODO: get rid of the custom session/cookie and auth code?
  73  *         (the last problem with the POST was the missing content-length header)
  74  * TODO: nicer swiping removal with visual feedback
  75  *  */
  76
  77 public class NewTransactionActivity extends CrashReportingActivity
  78         implements TaskCallback, DescriptionSelectedCallback {
  79     private static SaveTransactionTask saver;
  80     private TableLayout table;
  81     private ProgressBar progress;
  82     private FloatingActionButton fab;
  83     private TextView tvDate;
  84     private AutoCompleteTextView tvDescription;
  85     private static boolean isZero(float f) {
  86         return (f < 0.005) && (f > -0.005);
  87     }
  88     @Override
  89     protected void onCreate(Bundle savedInstanceState) {
  90         super.onCreate(savedInstanceState);
  91         setContentView(R.layout.activity_new_transaction);
  92         Toolbar toolbar = findViewById(R.id.toolbar);
  93         setSupportActionBar(toolbar);
  94         toolbar.setSubtitle(Data.profile.get().getName());
  95
  96         tvDate = findViewById(R.id.new_transaction_date);
  97         tvDate.setOnFocusChangeListener((v, hasFocus) -> {
  98             if (hasFocus) pickTransactionDate(v);
  99         });
 100         tvDescription = findViewById(R.id.new_transaction_description);
 101         MLDB.hookAutocompletionAdapter(this, tvDescription, MLDB.DESCRIPTION_HISTORY_TABLE,
 102                 "description", false, findViewById(R.id.new_transaction_acc_1), this);
 103         hookTextChangeListener(tvDescription);
 104
 105         progress = findViewById(R.id.save_transaction_progress);
 106         fab = findViewById(R.id.fab);
 107         fab.setOnClickListener(v -> saveTransaction());
 108
 109         Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
 110         table = findViewById(R.id.new_transaction_accounts_table);
 111         for (int i = 0; i < table.getChildCount(); i++) {
 112             TableRow row = (TableRow) table.getChildAt(i);
 113             AutoCompleteTextView tvAccountName = (AutoCompleteTextView) row.getChildAt(0);
 114             TextView tvAmount = (TextView) row.getChildAt(1);
 115             hookSwipeListener(row);
 116             MLDB.hookAutocompletionAdapter(this, tvAccountName, MLDB.ACCOUNTS_TABLE, "name", true,
 117                     tvAmount, null);
 118             hookTextChangeListener(tvAccountName);
 119             hookTextChangeListener(tvAmount);
 120 //            Log.d("swipe", "hooked to row "+i);
 121         }
 122     }
 123
 124     @Override
 125     public void finish() {
 126         super.finish();
 127         overridePendingTransition(R.anim.dummy, R.anim.slide_out_right);
 128     }
 129
 130     @Override
 131     public boolean onOptionsItemSelected(MenuItem item) {
 132         switch (item.getItemId()) {
 133             case android.R.id.home:
 134                 finish();
 135                 return true;
 136         }
 137         return super.onOptionsItemSelected(item);
 138     }
 139     @Override
 140     protected void onStart() {
 141         super.onStart();
 142         if (tvDescription.getText().toString().isEmpty()) tvDescription.requestFocus();
 143     }
 144     public void saveTransaction() {
 145         if (fab != null) fab.setEnabled(false);
 146         toggleAllEditing(false);
 147         progress.setVisibility(View.VISIBLE);
 148         try {
 149
 150             saver = new SaveTransactionTask(this);
 151
 152             String dateString = tvDate.getText().toString();
 153             Date date;
 154             if (dateString.isEmpty()) date = new Date();
 155             else date = Globals.parseLedgerDate(dateString);
 156             LedgerTransaction tr = new LedgerTransaction(date, tvDescription.getText().toString());
 157
 158             TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 159             for (int i = 0; i < table.getChildCount(); i++) {
 160                 TableRow row = (TableRow) table.getChildAt(i);
 161                 String acc = ((TextView) row.getChildAt(0)).getText().toString();
 162                 String amt = ((TextView) row.getChildAt(1)).getText().toString();
 163                 LedgerTransactionAccount item =
 164                         amt.length() > 0 ? new LedgerTransactionAccount(acc, Float.parseFloat(amt))
 165                                          : new LedgerTransactionAccount(acc);
 166
 167                 tr.addAccount(item);
 168             }
 169             saver.execute(tr);
 170         }
 171         catch (ParseException e) {
 172             Log.d("new-transaction", "Parse error", e);
 173             Toast.makeText(this, getResources().getString(R.string.error_invalid_date),
 174                     Toast.LENGTH_LONG).show();
 175             tvDate.requestFocus();
 176
 177             progress.setVisibility(View.GONE);
 178             toggleAllEditing(true);
 179             if (fab != null) fab.setEnabled(true);
 180         }
 181         catch (Exception e) {
 182             Log.d("new-transaction", "Unknown error", e);
 183
 184             progress.setVisibility(View.GONE);
 185             toggleAllEditing(true);
 186             if (fab != null) fab.setEnabled(true);
 187         }
 188     }
 189     private void toggleAllEditing(boolean enabled) {
 190         tvDate.setEnabled(enabled);
 191         tvDescription.setEnabled(enabled);
 192         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 193         for (int i = 0; i < table.getChildCount(); i++) {
 194             TableRow row = (TableRow) table.getChildAt(i);
 195             for (int j = 0; j < row.getChildCount(); j++) {
 196                 row.getChildAt(j).setEnabled(enabled);
 197             }
 198         }
 199     }
 200     private void hookSwipeListener(final TableRow row) {
 201         row.getChildAt(0).setOnTouchListener(new OnSwipeTouchListener(this) {
 202             public void onSwipeLeft() {
 203 //                Log.d("swipe", "LEFT" + row.getId());
 204                 if (table.getChildCount() > 2) {
 205                     TableRow prev_row = (TableRow) table.getChildAt(table.indexOfChild(row) - 1);
 206                     TableRow next_row = (TableRow) table.getChildAt(table.indexOfChild(row) + 1);
 207                     TextView prev_amt =
 208                             (prev_row != null) ? (TextView) prev_row.getChildAt(1) : tvDescription;
 209                     TextView next_acc =
 210                             (next_row != null) ? (TextView) next_row.getChildAt(0) : null;
 211
 212                     if (next_acc == null) {
 213                         prev_amt.setNextFocusRightId(R.id.none);
 214                         prev_amt.setNextFocusForwardId(R.id.none);
 215                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 216                     }
 217                     else {
 218                         prev_amt.setNextFocusRightId(next_acc.getId());
 219                         prev_amt.setNextFocusForwardId(next_acc.getId());
 220                         prev_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 221                     }
 222
 223                     if (row.hasFocus()) {
 224                         if (next_acc != null) next_acc.requestFocus();
 225                         else prev_amt.requestFocus();
 226                     }
 227
 228                     table.removeView(row);
 229                     check_transaction_submittable();
 230 //                    Toast.makeText(NewTransactionActivity.this, "LEFT", Toast.LENGTH_LONG).show();
 231                 }
 232                 else {
 233                     Snackbar.make(table, R.string.msg_at_least_two_accounts_are_required,
 234                             Snackbar.LENGTH_LONG).setAction("Action", null).show();
 235                 }
 236             }
 237             //            @Override
 238 //            public boolean performClick(View view, MotionEvent m) {
 239 //                return true;
 240 //            }
 241             public boolean onTouch(View view, MotionEvent m) {
 242                 return gestureDetector.onTouchEvent(m);
 243             }
 244         });
 245     }
 246
 247     public boolean simulateCrash(MenuItem item) {
 248         Log.d("crash", "Will crash intentionally");
 249         new AsyncCrasher().execute();
 250         return true;
 251     }
 252     public boolean onCreateOptionsMenu(Menu menu) {
 253         // Inflate the menu; this adds items to the action bar if it is present.
 254         getMenuInflater().inflate(R.menu.new_transaction, menu);
 255
 256         if (BuildConfig.DEBUG) {
 257             menu.findItem(R.id.action_simulate_crash).setVisible(true);
 258         }
 259         check_transaction_submittable();
 260
 261         return true;
 262     }
 263
 264     public void pickTransactionDate(View view) {
 265         DialogFragment picker = new DatePickerFragment();
 266         picker.show(getSupportFragmentManager(), "datePicker");
 267     }
 268
 269     public int dp2px(float dp) {
 270         return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
 271                 getResources().getDisplayMetrics()));
 272     }
 273     private void hookTextChangeListener(final TextView view) {
 274         view.addTextChangedListener(new TextWatcher() {
 275             @Override
 276             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 277
 278             }
 279
 280             @Override
 281             public void onTextChanged(CharSequence s, int start, int before, int count) {
 282
 283             }
 284
 285             @Override
 286             public void afterTextChanged(Editable s) {
 287 //                Log.d("input", "text changed");
 288                 check_transaction_submittable();
 289             }
 290         });
 291
 292     }
 293     private TableRow doAddAccountRow(boolean focus) {
 294         final AutoCompleteTextView acc = new AutoCompleteTextView(this);
 295         acc.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 296                 TableRow.LayoutParams.WRAP_CONTENT, 9f));
 297         acc.setHint(R.string.new_transaction_account_hint);
 298         acc.setWidth(0);
 299         acc.setImeOptions(EditorInfo.IME_ACTION_NEXT | EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 300                           EditorInfo.IME_FLAG_NAVIGATE_NEXT);
 301         acc.setSingleLine(true);
 302
 303         final EditText amt = new EditText(this);
 304         amt.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
 305                 TableRow.LayoutParams.MATCH_PARENT, 1f));
 306         amt.setHint(R.string.new_transaction_amount_hint);
 307         amt.setWidth(0);
 308         amt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED |
 309                          InputType.TYPE_NUMBER_FLAG_DECIMAL);
 310         amt.setMinWidth(dp2px(40));
 311         amt.setTextAlignment(EditText.TEXT_ALIGNMENT_VIEW_END);
 312         amt.setImeOptions(EditorInfo.IME_ACTION_DONE);
 313         amt.setSelectAllOnFocus(true);
 314
 315         // forward navigation support
 316         final TableRow last_row = (TableRow) table.getChildAt(table.getChildCount() - 1);
 317         final TextView last_amt = (TextView) last_row.getChildAt(1);
 318         last_amt.setNextFocusForwardId(acc.getId());
 319         last_amt.setNextFocusRightId(acc.getId());
 320         last_amt.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 321         acc.setNextFocusForwardId(amt.getId());
 322         acc.setNextFocusRightId(amt.getId());
 323
 324         final TableRow row = new TableRow(this);
 325         row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
 326                 TableRow.LayoutParams.MATCH_PARENT));
 327         row.setGravity(Gravity.BOTTOM);
 328         row.addView(acc);
 329         row.addView(amt);
 330         table.addView(row);
 331
 332         if (focus) acc.requestFocus();
 333
 334         hookSwipeListener(row);
 335         MLDB.hookAutocompletionAdapter(this, acc, MLDB.ACCOUNTS_TABLE, "name", true, amt, null);
 336         hookTextChangeListener(acc);
 337         hookTextChangeListener(amt);
 338
 339         return row;
 340     }
 341     public void addTransactionAccountFromMenu(MenuItem item) {
 342         doAddAccountRow(true);
 343     }
 344     public void resetTransactionFromMenu(MenuItem item) {
 345         resetForm();
 346     }
 347     public void saveTransactionFromMenu(MenuItem item) {
 348         saveTransaction();
 349     }
 350     // rules:
 351     // 1) at least two account names
 352     // 2) each amount must have account name
 353     // 3) amounts must balance to 0, or
 354     // 3a) there must be exactly one empty amount
 355     // 4) empty accounts with empty amounts are ignored
 356     // 5) a row with an empty account name or empty amount is guaranteed to exist
 357     @SuppressLint("DefaultLocale")
 358     private void check_transaction_submittable() {
 359         TableLayout table = findViewById(R.id.new_transaction_accounts_table);
 360         int accounts = 0;
 361         int accounts_with_values = 0;
 362         int amounts = 0;
 363         int amounts_with_accounts = 0;
 364         int empty_rows = 0;
 365         TextView empty_amount = null;
 366         boolean single_empty_amount = false;
 367         boolean single_empty_amount_has_account = false;
 368         float running_total = 0f;
 369         boolean have_description =
 370                 !((TextView) findViewById(R.id.new_transaction_description)).getText().toString()
 371                         .isEmpty();
 372
 373         try {
 374             for (int i = 0; i < table.getChildCount(); i++) {
 375                 TableRow row = (TableRow) table.getChildAt(i);
 376
 377                 TextView acc_name_v = (TextView) row.getChildAt(0);
 378                 TextView amount_v = (TextView) row.getChildAt(1);
 379                 String amt = String.valueOf(amount_v.getText());
 380                 String acc_name = String.valueOf(acc_name_v.getText());
 381                 acc_name = acc_name.trim();
 382
 383                 if (!acc_name.isEmpty()) {
 384                     accounts++;
 385
 386                     if (!amt.isEmpty()) {
 387                         accounts_with_values++;
 388                     }
 389                 }
 390                 else empty_rows++;
 391
 392                 if (amt.isEmpty()) {
 393                     amount_v.setHint(String.format("%1.2f", 0f));
 394                     if (empty_amount == null) {
 395                         empty_amount = amount_v;
 396                         single_empty_amount = true;
 397                         single_empty_amount_has_account = !acc_name.isEmpty();
 398                     }
 399                     else if (!acc_name.isEmpty()) single_empty_amount = false;
 400                 }
 401                 else {
 402                     amounts++;
 403                     if (!acc_name.isEmpty()) amounts_with_accounts++;
 404                     running_total += Float.valueOf(amt);
 405                 }
 406             }
 407
 408             if ((empty_rows == 0) &&
 409                 ((table.getChildCount() == accounts) || (table.getChildCount() == amounts)))
 410             {
 411                 doAddAccountRow(false);
 412             }
 413
 414             Log.d("submittable", String.format("accounts=%d, accounts_with_values=%s, " +
 415                                                "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " +
 416                                                "single_empty_with_acc=%s", accounts,
 417                     accounts_with_values, amounts_with_accounts, amounts, running_total,
 418                     (single_empty_amount && single_empty_amount_has_account) ? "true" : "false"));
 419
 420             if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) &&
 421                 (amounts_with_accounts == amounts) &&
 422                 (single_empty_amount && single_empty_amount_has_account || isZero(running_total)))
 423             {
 424                 if (fab != null) {
 425                     fab.show();
 426                     fab.setEnabled(true);
 427                 }
 428             }
 429             else {
 430                 if (fab != null) fab.hide();
 431             }
 432
 433             if (single_empty_amount) {
 434                 empty_amount.setHint(String.format("%1.2f",
 435                         (Math.abs(running_total) > 0.005) ? -running_total : 0f));
 436             }
 437
 438         }
 439         catch (NumberFormatException e) {
 440             if (fab != null) fab.hide();
 441         }
 442         catch (Exception e) {
 443             e.printStackTrace();
 444             if (fab != null) fab.hide();
 445         }
 446     }
 447
 448     @Override
 449     public void done(String error) {
 450         progress.setVisibility(View.INVISIBLE);
 451         Log.d("visuals", "hiding progress");
 452
 453         if (error == null) resetForm();
 454         else Snackbar.make(findViewById(R.id.new_transaction_accounts_table), error,
 455                 BaseTransientBottomBar.LENGTH_LONG).show();
 456
 457         toggleAllEditing(true);
 458         check_transaction_submittable();
 459     }
 460
 461     private void resetForm() {
 462         tvDate.setText("");
 463         tvDescription.setText("");
 464
 465         tvDescription.requestFocus();
 466
 467         while (table.getChildCount() > 2) {
 468             table.removeViewAt(2);
 469         }
 470         for (int i = 0; i < 2; i++) {
 471             TableRow tr = (TableRow) table.getChildAt(i);
 472             if (tr == null) break;
 473
 474             ((TextView) tr.getChildAt(0)).setText("");
 475             ((TextView) tr.getChildAt(1)).setText("");
 476         }
 477     }
 478     @Override
 479     public void descriptionSelected(String description) {
 480         Log.d("descr selected", description);
 481         if (!inputStateIsInitial()) return;
 482
 483         try (Cursor c = MLDB.getReadableDatabase().rawQuery(
 484                 "select profile, id from transactions where description=? order by date desc " +
 485                 "limit 1", new String[]{description}))
 486         {
 487             if (!c.moveToNext()) return;
 488
 489             String profileUUID = c.getString(0);
 490             int transactionId = c.getInt(1);
 491             List<MobileLedgerProfile> profiles = Data.profiles.getList();
 492             MobileLedgerProfile profile = null;
 493             for (int i = 0; i < profiles.size(); i++) {
 494                 MobileLedgerProfile p = profiles.get(i);
 495                 if (p.getUuid().equals(profileUUID)) {
 496                     profile = p;
 497                     break;
 498                 }
 499             }
 500             if (profile == null) throw new RuntimeException(String.format(
 501                     "Unable to find profile %s, which is supposed to contain " +
 502                     "transaction %d with description %s", profileUUID, transactionId, description));
 503
 504             LedgerTransaction tr = profile.loadTransaction(transactionId);
 505             int i = 0;
 506             table = findViewById(R.id.new_transaction_accounts_table);
 507             ArrayList<LedgerTransactionAccount> accounts = tr.getAccounts();
 508             TableRow firstNegative = null;
 509             int negativeCount = 0;
 510             for (i = 0; i < accounts.size(); i++) {
 511                 LedgerTransactionAccount acc = accounts.get(i);
 512                 TableRow row = (TableRow) table.getChildAt(i);
 513                 if (row == null) row = doAddAccountRow(false);
 514
 515                 ((TextView) row.getChildAt(0)).setText(acc.getAccountName());
 516                 ((TextView) row.getChildAt(1))
 517                         .setText(String.format(Locale.US, "%1.2f", acc.getAmount()));
 518
 519                 if (acc.getAmount() < 0.005) {
 520                     if (firstNegative == null) firstNegative = row;
 521                     negativeCount++;
 522                 }
 523             }
 524
 525             if (negativeCount == 1) {
 526                 ((TextView) firstNegative.getChildAt(1)).setText(null);
 527             }
 528
 529             check_transaction_submittable();
 530
 531             EditText firstAmount = (EditText) ((TableRow) table.getChildAt(0)).getChildAt(1);
 532             String amtString = String.valueOf(firstAmount.getText());
 533             firstAmount.requestFocus();
 534             firstAmount.setSelection(0, amtString.length());
 535         }
 536
 537     }
 538     private boolean inputStateIsInitial() {
 539         table = findViewById(R.id.new_transaction_accounts_table);
 540
 541         if (table.getChildCount() != 2) return false;
 542
 543         for (int i = 0; i < 2; i++) {
 544             TableRow row = (TableRow) table.getChildAt(i);
 545             if (((TextView) row.getChildAt(0)).getText().length() > 0) return false;
 546             if (((TextView) row.getChildAt(1)).getText().length() > 0) return false;
 547         }
 548
 549         return true;
 550     }
 551     private class AsyncCrasher extends AsyncTask<Void, Void, Void>{
 552         @Override
 553         protected Void doInBackground(Void... voids) {
 554             throw new RuntimeException("Simulated crash");
 555         }
 556     }
 557 }