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