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