+/*
+ * Copyright © 2022 Damyan Ivanov.
+ * This file is part of MoLe.
+ * MoLe is free software: you can distribute it and/or modify it
+ * under the term of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
+ *
+ * MoLe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License terms for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.ktnx.mobileledger.ui.new_transaction;
+
+import android.annotation.SuppressLint;
+import android.os.Build;
+import android.text.TextUtils;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModel;
+
+import net.ktnx.mobileledger.BuildConfig;
+import net.ktnx.mobileledger.db.Currency;
+import net.ktnx.mobileledger.db.DB;
+import net.ktnx.mobileledger.db.Profile;
+import net.ktnx.mobileledger.db.TemplateAccount;
+import net.ktnx.mobileledger.db.TemplateHeader;
+import net.ktnx.mobileledger.db.TransactionWithAccounts;
+import net.ktnx.mobileledger.model.Data;
+import net.ktnx.mobileledger.model.InertMutableLiveData;
+import net.ktnx.mobileledger.model.LedgerTransaction;
+import net.ktnx.mobileledger.model.LedgerTransactionAccount;
+import net.ktnx.mobileledger.model.MatchedTemplate;
+import net.ktnx.mobileledger.utils.Globals;
+import net.ktnx.mobileledger.utils.Logger;
+import net.ktnx.mobileledger.utils.Misc;
+import net.ktnx.mobileledger.utils.SimpleDate;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Locale;
+import java.util.Objects;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.regex.MatchResult;
+
+enum ItemType {generalData, transactionRow}
+
+enum FocusedElement {Account, Comment, Amount, Description, TransactionComment}
+
+
+public class NewTransactionModel extends ViewModel {
+ private static final int MIN_ITEMS = 3;
+ private final MutableLiveData<Boolean> showCurrency = new MutableLiveData<>(false);
+ private final MutableLiveData<Boolean> isSubmittable = new InertMutableLiveData<>(false);
+ private final MutableLiveData<Boolean> showComments = new MutableLiveData<>(true);
+ private final MutableLiveData<List<Item>> items = new MutableLiveData<>();
+ private final MutableLiveData<Boolean> simulateSave = new InertMutableLiveData<>(false);
+ private final AtomicInteger busyCounter = new AtomicInteger(0);
+ private final MutableLiveData<Boolean> busyFlag = new InertMutableLiveData<>(false);
+ private final Observer<Profile> profileObserver = profile -> {
+ if (profile != null) {
+ showCurrency.postValue(profile.getShowCommodityByDefault());
+ showComments.postValue(profile.getShowCommentsByDefault());
+ }
+ };
+ private final MutableLiveData<FocusInfo> focusInfo = new MutableLiveData<>();
+ private boolean observingDataProfile;
+ public NewTransactionModel() {
+ }
+ public LiveData<Boolean> getShowCurrency() {
+ return showCurrency;
+ }
+ public LiveData<List<Item>> getItems() {
+ return items;
+ }
+ private void setItems(@NonNull List<Item> newList) {
+ checkTransactionSubmittable(newList);
+ setItemsWithoutSubmittableChecks(newList);
+ }
+ private void replaceItems(@NonNull List<Item> newList) {
+ renumberItems();
+
+ setItems(newList);
+ }
+ /**
+ * make old items replaceable in-place. makes the new values visually blend in
+ */
+ private void renumberItems() {
+ renumberItems(items.getValue());
+ }
+ private void renumberItems(List<Item> list) {
+ if (list == null) {
+ return;
+ }
+
+ int id = 0;
+ for (Item item : list)
+ item.id = id++;
+ }
+ private void setItemsWithoutSubmittableChecks(@NonNull List<Item> list) {
+ final int cnt = list.size();
+ for (int i = 1; i < cnt - 1; i++) {
+ final TransactionAccount item = list.get(i)
+ .toTransactionAccount();
+ if (item.isLast) {
+ TransactionAccount replacement = new TransactionAccount(item);
+ replacement.isLast = false;
+ list.set(i, replacement);
+ }
+ }
+ final TransactionAccount last = list.get(cnt - 1)
+ .toTransactionAccount();
+ if (!last.isLast) {
+ TransactionAccount replacement = new TransactionAccount(last);
+ replacement.isLast = true;
+ list.set(cnt - 1, replacement);
+ }
+
+ if (BuildConfig.DEBUG)
+ dumpItemList("Before setValue()", list);
+ items.setValue(list);
+ }
+ private List<Item> copyList() {
+ List<Item> copy = new ArrayList<>();
+ List<Item> oldList = items.getValue();
+
+ if (oldList != null)
+ for (Item item : oldList) {
+ copy.add(Item.from(item));
+ }
+
+ return copy;
+ }
+ private List<Item> copyListWithoutItem(int position) {
+ List<Item> copy = new ArrayList<>();
+ List<Item> oldList = items.getValue();
+
+ if (oldList != null) {
+ int i = 0;
+ for (Item item : oldList) {
+ if (i++ == position)
+ continue;
+ copy.add(Item.from(item));
+ }
+ }
+
+ return copy;
+ }
+ private List<Item> shallowCopyList() {
+ return new ArrayList<>(Objects.requireNonNull(items.getValue()));
+ }
+ LiveData<Boolean> getShowComments() {
+ return showComments;
+ }
+ void observeDataProfile(LifecycleOwner activity) {
+ if (!observingDataProfile)
+ Data.observeProfile(activity, profileObserver);
+ observingDataProfile = true;
+ }
+ boolean getSimulateSaveFlag() {
+ Boolean value = simulateSave.getValue();
+ if (value == null)
+ return false;
+ return value;
+ }
+ LiveData<Boolean> getSimulateSave() {
+ return simulateSave;
+ }
+ void toggleSimulateSave() {
+ simulateSave.setValue(!getSimulateSaveFlag());
+ }
+ LiveData<Boolean> isSubmittable() {
+ return this.isSubmittable;
+ }
+ void reset() {
+ Logger.debug("new-trans", "Resetting model");
+ List<Item> list = new ArrayList<>();
+ Item.resetIdDispenser();
+ list.add(new TransactionHead(""));
+ final String defaultCurrency = Objects.requireNonNull(Data.getProfile())
+ .getDefaultCommodity();
+ list.add(new TransactionAccount("", defaultCurrency));
+ list.add(new TransactionAccount("", defaultCurrency));
+ noteFocusChanged(0, FocusedElement.Description);
+ renumberItems();
+ isSubmittable.setValue(false);
+ setItemsWithoutSubmittableChecks(list);
+ }
+ boolean accountsInInitialState() {
+ final List<Item> list = items.getValue();
+
+ if (list == null)
+ return true;
+
+ for (Item item : list) {
+ if (!(item instanceof TransactionAccount))
+ continue;
+
+ TransactionAccount accRow = (TransactionAccount) item;
+ if (!accRow.isEmpty())
+ return false;
+ }
+
+ return true;
+ }
+ void applyTemplate(MatchedTemplate matchedTemplate, String text) {
+ SimpleDate transactionDate = null;
+ final MatchResult matchResult = matchedTemplate.matchResult;
+ final TemplateHeader templateHead = matchedTemplate.templateHead;
+ {
+ int day = extractIntFromMatches(matchResult, templateHead.getDateDayMatchGroup(),
+ templateHead.getDateDay());
+ int month = extractIntFromMatches(matchResult, templateHead.getDateMonthMatchGroup(),
+ templateHead.getDateMonth());
+ int year = extractIntFromMatches(matchResult, templateHead.getDateYearMatchGroup(),
+ templateHead.getDateYear());
+
+ if (year > 0 || month > 0 || day > 0) {
+ SimpleDate today = SimpleDate.today();
+ if (year <= 0)
+ year = today.year;
+ if (month <= 0)
+ month = today.month;
+ if (day <= 0)
+ day = today.day;
+
+ transactionDate = new SimpleDate(year, month, day);
+
+ Logger.debug("pattern", "setting transaction date to " + transactionDate);
+ }
+ }
+
+ List<Item> present = copyList();
+
+ TransactionHead head = new TransactionHead(present.get(0)
+ .toTransactionHead());
+ if (transactionDate != null)
+ head.setDate(transactionDate);
+
+ final String transactionDescription = extractStringFromMatches(matchResult,
+ templateHead.getTransactionDescriptionMatchGroup(),
+ templateHead.getTransactionDescription());
+ if (Misc.emptyIsNull(transactionDescription) != null)
+ head.setDescription(transactionDescription);
+
+ final String transactionComment = extractStringFromMatches(matchResult,
+ templateHead.getTransactionCommentMatchGroup(),
+ templateHead.getTransactionComment());
+ if (Misc.emptyIsNull(transactionComment) != null)
+ head.setComment(transactionComment);
+
+ List<Item> newItems = new ArrayList<>();
+
+ newItems.add(head);
+
+ for (int i = 1; i < present.size(); i++) {
+ final TransactionAccount row = present.get(i)
+ .toTransactionAccount();
+ if (!row.isEmpty())
+ newItems.add(new TransactionAccount(row));
+ }
+
+ DB.get()
+ .getTemplateDAO()
+ .getTemplateWithAccountsAsync(templateHead.getId(), entry -> {
+ int rowIndex = 0;
+ final boolean accountsInInitialState = accountsInInitialState();
+ for (TemplateAccount acc : entry.accounts) {
+ rowIndex++;
+
+ String accountName =
+ extractStringFromMatches(matchResult, acc.getAccountNameMatchGroup(),
+ acc.getAccountName());
+ String accountComment =
+ extractStringFromMatches(matchResult, acc.getAccountCommentMatchGroup(),
+ acc.getAccountComment());
+ Float amount = extractFloatFromMatches(matchResult, acc.getAmountMatchGroup(),
+ acc.getAmount());
+ if (amount != null && acc.getNegateAmount() != null && acc.getNegateAmount())
+ amount = -amount;
+
+ TransactionAccount accRow = new TransactionAccount(accountName);
+ accRow.setComment(accountComment);
+ if (amount != null)
+ accRow.setAmount(amount);
+ accRow.setCurrency(
+ extractCurrencyFromMatches(matchResult, acc.getCurrencyMatchGroup(),
+ acc.getCurrencyObject()));
+
+ newItems.add(accRow);
+ }
+
+ renumberItems(newItems);
+ Misc.onMainThread(() -> replaceItems(newItems));
+ });
+ }
+ @NonNull
+ private String extractCurrencyFromMatches(MatchResult m, Integer group, Currency literal) {
+ return Misc.nullIsEmpty(
+ extractStringFromMatches(m, group, (literal == null) ? "" : literal.getName()));
+ }
+ private int extractIntFromMatches(MatchResult m, Integer group, Integer literal) {
+ if (literal != null)
+ return literal;
+
+ if (group != null) {
+ int grp = group;
+ if (grp > 0 && grp <= m.groupCount())
+ try {
+ return Integer.parseInt(m.group(grp));
+ }
+ catch (NumberFormatException e) {
+ Logger.debug("new-trans", "Error extracting matched number", e);
+ }
+ }
+
+ return 0;
+ }
+ @Nullable
+ private String extractStringFromMatches(MatchResult m, Integer group, String literal) {
+ if (literal != null)
+ return literal;
+
+ if (group != null) {
+ int grp = group;
+ if (grp > 0 && grp <= m.groupCount())
+ return m.group(grp);
+ }
+
+ return null;
+ }
+ private Float extractFloatFromMatches(MatchResult m, Integer group, Float literal) {
+ if (literal != null)
+ return literal;
+
+ if (group != null) {
+ int grp = group;
+ if (grp > 0 && grp <= m.groupCount())
+ try {
+ return Float.valueOf(m.group(grp));
+ }
+ catch (NumberFormatException e) {
+ Logger.debug("new-trans", "Error extracting matched number", e);
+ }
+ }
+
+ return null;
+ }
+ void removeItem(int pos) {
+ Logger.debug("new-trans", String.format(Locale.US, "Removing item at position %d", pos));
+ List<Item> newList = copyListWithoutItem(pos);
+ final FocusInfo fi = focusInfo.getValue();
+ if ((fi != null) && (pos < fi.position))
+ noteFocusChanged(fi.position - 1, fi.element);
+ setItems(newList);
+ }
+ void noteFocusChanged(int position, @Nullable FocusedElement element) {
+ FocusInfo present = focusInfo.getValue();
+ if (present == null || present.position != position || present.element != element)
+ focusInfo.setValue(new FocusInfo(position, element));
+ }
+ public LiveData<FocusInfo> getFocusInfo() {
+ return focusInfo;
+ }
+ void moveItem(int fromIndex, int toIndex) {
+ List<Item> newList = shallowCopyList();
+ Item item = newList.remove(fromIndex);
+ newList.add(toIndex, item);
+
+ FocusInfo fi = focusInfo.getValue();
+ if (fi != null && fi.position == fromIndex)
+ noteFocusChanged(toIndex, fi.element);
+
+ items.setValue(newList); // same count, same submittable state
+ }
+ void moveItemLast(List<Item> list, int index) {
+ /* 0
+ 1 <-- index
+ 2
+ 3 <-- desired position
+ (no bottom filler)
+ */
+ int itemCount = list.size();
+
+ if (index < itemCount - 1)
+ list.add(list.remove(index));
+ }
+ void toggleCurrencyVisible() {
+ final boolean newValue = !Objects.requireNonNull(showCurrency.getValue());
+
+ // remove currency from all items, or reset currency to the default
+ // no need to clone the list, because the removal of the currency won't lead to
+ // visual changes -- the currency fields will be hidden or reset to default anyway
+ // still, there may be changes in the submittable state
+ final List<Item> list = Objects.requireNonNull(this.items.getValue());
+ final Profile profile = Objects.requireNonNull(Data.getProfile());
+ for (int i = 1; i < list.size(); i++) {
+ ((TransactionAccount) list.get(i)).setCurrency(
+ newValue ? profile.getDefaultCommodity() : "");
+ }
+ checkTransactionSubmittable(null);
+ showCurrency.setValue(newValue);
+ }
+ void stopObservingBusyFlag(Observer<Boolean> observer) {
+ busyFlag.removeObserver(observer);
+ }
+ void incrementBusyCounter() {
+ int newValue = busyCounter.incrementAndGet();
+ if (newValue == 1)
+ busyFlag.postValue(true);
+ }
+ void decrementBusyCounter() {
+ int newValue = busyCounter.decrementAndGet();
+ if (newValue == 0)
+ busyFlag.postValue(false);
+ }
+ public LiveData<Boolean> getBusyFlag() {
+ return busyFlag;
+ }
+ public void toggleShowComments() {
+ showComments.setValue(!Objects.requireNonNull(showComments.getValue()));
+ }
+ public LedgerTransaction constructLedgerTransaction() {
+ List<Item> list = Objects.requireNonNull(items.getValue());
+ TransactionHead head = list.get(0)
+ .toTransactionHead();
+ LedgerTransaction tr = head.asLedgerTransaction();
+
+ tr.setComment(head.getComment());
+ HashMap<String, List<LedgerTransactionAccount>> emptyAmountAccounts = new HashMap<>();
+ HashMap<String, Float> emptyAmountAccountBalance = new HashMap<>();
+ for (int i = 1; i < list.size(); i++) {
+ TransactionAccount item = list.get(i)
+ .toTransactionAccount();
+ String currency = item.getCurrency();
+ LedgerTransactionAccount acc = new LedgerTransactionAccount(item.getAccountName()
+ .trim(), currency);
+ if (acc.getAccountName()
+ .isEmpty())
+ continue;
+
+ acc.setComment(item.getComment());
+
+ if (item.isAmountSet()) {
+ acc.setAmount(item.getAmount());
+ Float emptyCurrBalance = emptyAmountAccountBalance.get(currency);
+ if (emptyCurrBalance == null) {
+ emptyAmountAccountBalance.put(currency, item.getAmount());
+ }
+ else {
+ emptyAmountAccountBalance.put(currency, emptyCurrBalance + item.getAmount());
+ }
+ }
+ else {
+ List<LedgerTransactionAccount> emptyCurrAccounts =
+ emptyAmountAccounts.get(currency);
+ if (emptyCurrAccounts == null)
+ emptyAmountAccounts.put(currency, emptyCurrAccounts = new ArrayList<>());
+ emptyCurrAccounts.add(acc);
+ }
+
+ tr.addAccount(acc);
+ }
+
+ if (emptyAmountAccounts.size() > 0) {
+ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+ emptyAmountAccounts.forEach((currency, accounts) -> {
+ final Float balance = emptyAmountAccountBalance.get(currency);
+
+ if (balance != null && !Misc.isZero(balance) && accounts.size() != 1) {
+ throw new RuntimeException(String.format(Locale.US,
+ "Should not happen: approved transaction has %d accounts " +
+ "without amounts for currency '%s'", accounts.size(), currency));
+ }
+ accounts.forEach(acc -> acc.setAmount(balance == null ? 0 : -balance));
+ });
+ }
+ else {
+ for (String currency : emptyAmountAccounts.keySet()) {
+ List<LedgerTransactionAccount> accounts =
+ Objects.requireNonNull(emptyAmountAccounts.get(currency));
+ final Float balance = emptyAmountAccountBalance.get(currency);
+ if (balance != null && !Misc.isZero(balance) && accounts.size() != 1)
+ throw new RuntimeException(String.format(Locale.US,
+ "Should not happen: approved transaction has %d accounts for " +
+ "currency %s", accounts.size(), currency));
+ for (LedgerTransactionAccount acc : accounts) {
+ acc.setAmount(balance == null ? 0 : -balance);
+ }
+ }
+ }
+ }
+
+ return tr;
+ }
+ void loadTransactionIntoModel(@NonNull TransactionWithAccounts tr) {
+ List<Item> newList = new ArrayList<>();
+ Item.resetIdDispenser();
+
+ Item currentHead = Objects.requireNonNull(items.getValue())
+ .get(0);
+ TransactionHead head = new TransactionHead(tr.transaction.getDescription());
+ head.setComment(tr.transaction.getComment());
+ if (currentHead instanceof TransactionHead)
+ head.setDate(((TransactionHead) currentHead).date);
+
+ newList.add(head);
+
+ List<LedgerTransactionAccount> accounts = new ArrayList<>();
+ for (net.ktnx.mobileledger.db.TransactionAccount acc : tr.accounts) {
+ accounts.add(new LedgerTransactionAccount(acc));
+ }
+
+ TransactionAccount firstNegative = null;
+ TransactionAccount firstPositive = null;
+ int singleNegativeIndex = -1;
+ int singlePositiveIndex = -1;
+ int negativeCount = 0;
+ boolean hasCurrency = false;
+ for (int i = 0; i < accounts.size(); i++) {
+ LedgerTransactionAccount acc = accounts.get(i);
+ TransactionAccount item = new TransactionAccount(acc.getAccountName(),
+ Misc.nullIsEmpty(acc.getCurrency()));
+ newList.add(item);
+
+ item.setAccountName(acc.getAccountName());
+ item.setComment(acc.getComment());
+ if (acc.isAmountSet()) {
+ item.setAmount(acc.getAmount());
+ if (acc.getAmount() < 0) {
+ if (firstNegative == null) {
+ firstNegative = item;
+ singleNegativeIndex = i + 1;
+ }
+ else
+ singleNegativeIndex = -1;
+ }
+ else {
+ if (firstPositive == null) {
+ firstPositive = item;
+ singlePositiveIndex = i + 1;
+ }
+ else
+ singlePositiveIndex = -1;
+ }
+ }
+ else
+ item.resetAmount();
+
+ if (item.getCurrency()
+ .length() > 0)
+ hasCurrency = true;
+ }
+ if (BuildConfig.DEBUG)
+ dumpItemList("Loaded previous transaction", newList);
+
+ if (singleNegativeIndex != -1) {
+ firstNegative.resetAmount();
+ moveItemLast(newList, singleNegativeIndex);
+ }
+ else if (singlePositiveIndex != -1) {
+ firstPositive.resetAmount();
+ moveItemLast(newList, singlePositiveIndex);
+ }
+
+ final boolean foundTransactionHasCurrency = hasCurrency;
+ Misc.onMainThread(() -> {
+ setItems(newList);
+ noteFocusChanged(1, FocusedElement.Amount);
+ if (foundTransactionHasCurrency)
+ showCurrency.setValue(true);
+ });
+ }
+ /**
+ * A transaction is submittable if:
+ * 0) has description
+ * 1) has at least two account names
+ * 2) each row with amount has account name
+ * 3) for each commodity:
+ * 3a) amounts must balance to 0, or
+ * 3b) there must be exactly one empty amount (with account)
+ * 4) empty accounts with empty amounts are ignored
+ * Side effects:
+ * 5) a row with an empty account name or empty amount is guaranteed to exist for each
+ * commodity
+ * 6) at least two rows need to be present in the ledger
+ *
+ * @param list - the item list to check. Can be the displayed list or a list that will be
+ * displayed soon
+ */
+ @SuppressLint("DefaultLocale")
+ void checkTransactionSubmittable(@Nullable List<Item> list) {
+ boolean workingWithLiveList = false;
+ if (list == null) {
+ list = copyList();
+ workingWithLiveList = true;
+ }
+
+ if (BuildConfig.DEBUG)
+ dumpItemList(String.format("Before submittable checks (%s)",
+ workingWithLiveList ? "LIVE LIST" : "custom list"), list);
+
+ int accounts = 0;
+ final BalanceForCurrency balance = new BalanceForCurrency();
+ final String descriptionText = list.get(0)
+ .toTransactionHead()
+ .getDescription();
+ boolean submittable = true;
+ boolean listChanged = false;
+ final ItemsForCurrency itemsForCurrency = new ItemsForCurrency();
+ final ItemsForCurrency itemsWithEmptyAmountForCurrency = new ItemsForCurrency();
+ final ItemsForCurrency itemsWithAccountAndEmptyAmountForCurrency = new ItemsForCurrency();
+ final ItemsForCurrency itemsWithEmptyAccountForCurrency = new ItemsForCurrency();
+ final ItemsForCurrency itemsWithAmountForCurrency = new ItemsForCurrency();
+ final ItemsForCurrency itemsWithAccountForCurrency = new ItemsForCurrency();
+ final ItemsForCurrency emptyRowsForCurrency = new ItemsForCurrency();
+ final List<Item> emptyRows = new ArrayList<>();
+
+ try {
+ if ((descriptionText == null) || descriptionText.trim()
+ .isEmpty())
+ {
+ Logger.debug("submittable", "Transaction not submittable: missing description");
+ submittable = false;
+ }
+
+ boolean hasInvalidAmount = false;
+
+ for (int i = 1; i < list.size(); i++) {
+ TransactionAccount item = list.get(i)
+ .toTransactionAccount();
+
+ String accName = item.getAccountName()
+ .trim();
+ String currName = item.getCurrency();
+
+ itemsForCurrency.add(currName, item);
+
+ if (accName.isEmpty()) {
+ itemsWithEmptyAccountForCurrency.add(currName, item);
+
+ if (item.isAmountSet()) {
+ // 2) each amount has account name
+ Logger.debug("submittable", String.format(
+ "Transaction not submittable: row %d has no account name, but" +
+ " has" + " amount %1.2f", i + 1, item.getAmount()));
+ submittable = false;
+ }
+ else {
+ emptyRowsForCurrency.add(currName, item);
+ }
+ }
+ else {
+ accounts++;
+ itemsWithAccountForCurrency.add(currName, item);
+ }
+
+ if (item.isAmountSet() && item.isAmountValid()) {
+ itemsWithAmountForCurrency.add(currName, item);
+ balance.add(currName, item.getAmount());
+ }
+ else {
+ if (!item.isAmountValid()) {
+ Logger.debug("submittable",
+ String.format("Not submittable: row %d has an invalid amount", i));
+ submittable = false;
+ hasInvalidAmount = true;
+ }
+
+ itemsWithEmptyAmountForCurrency.add(currName, item);
+
+ if (!accName.isEmpty())
+ itemsWithAccountAndEmptyAmountForCurrency.add(currName, item);
+ }
+ }
+
+ // 1) has at least two account names
+ if (accounts < 2) {
+ if (accounts == 0)
+ Logger.debug("submittable", "Transaction not submittable: no account names");
+ else if (accounts == 1)
+ Logger.debug("submittable",
+ "Transaction not submittable: only one account name");
+ else
+ Logger.debug("submittable",
+ String.format("Transaction not submittable: only %d account names",
+ accounts));
+ submittable = false;
+ }
+
+ // 3) for each commodity:
+ // 3a) amount must balance to 0, or
+ // 3b) there must be exactly one empty amount (with account)
+ for (String balCurrency : itemsForCurrency.currencies()) {
+ float currencyBalance = balance.get(balCurrency);
+ if (Misc.isZero(currencyBalance)) {
+ // remove hints from all amount inputs in that currency
+ for (int i = 1; i < list.size(); i++) {
+ TransactionAccount acc = list.get(i)
+ .toTransactionAccount();
+ if (Misc.equalStrings(acc.getCurrency(), balCurrency)) {
+ if (BuildConfig.DEBUG)
+ Logger.debug("submittable",
+ String.format(Locale.US, "Resetting hint of %d:'%s' [%s]",
+ i, Misc.nullIsEmpty(acc.getAccountName()),
+ balCurrency));
+ // skip if the amount is set, in which case the hint is not
+ // important/visible
+ if (!acc.isAmountSet() && acc.amountHintIsSet &&
+ !TextUtils.isEmpty(acc.getAmountHint()))
+ {
+ acc.setAmountHint(null);
+ listChanged = true;
+ }
+ }
+ }
+ }
+ else {
+ List<Item> tmpList =
+ itemsWithAccountAndEmptyAmountForCurrency.getList(balCurrency);
+ int balanceReceiversCount = tmpList.size();
+ if (balanceReceiversCount != 1) {
+ if (BuildConfig.DEBUG) {
+ if (balanceReceiversCount == 0)
+ Logger.debug("submittable", String.format(
+ "Transaction not submittable [curr:%s]: non-zero balance " +
+ "with no empty amounts with accounts", balCurrency));
+ else
+ Logger.debug("submittable", String.format(
+ "Transaction not submittable [curr:%s]: non-zero balance " +
+ "with multiple empty amounts with accounts", balCurrency));
+ }
+ submittable = false;
+ }
+
+ List<Item> emptyAmountList =
+ itemsWithEmptyAmountForCurrency.getList(balCurrency);
+
+ // suggest off-balance amount to a row and remove hints on other rows
+ Item receiver = null;
+ if (!tmpList.isEmpty())
+ receiver = tmpList.get(0);
+ else if (!emptyAmountList.isEmpty())
+ receiver = emptyAmountList.get(0);
+
+ for (int i = 0; i < list.size(); i++) {
+ Item item = list.get(i);
+ if (!(item instanceof TransactionAccount))
+ continue;
+
+ TransactionAccount acc = item.toTransactionAccount();
+ if (!Misc.equalStrings(acc.getCurrency(), balCurrency))
+ continue;
+
+ if (item == receiver) {
+ final String hint = Data.formatNumber(-currencyBalance);
+ if (!acc.isAmountHintSet() ||
+ !Misc.equalStrings(acc.getAmountHint(), hint))
+ {
+ Logger.debug("submittable",
+ String.format("Setting amount hint of {%s} to %s [%s]", acc,
+ hint, balCurrency));
+ acc.setAmountHint(hint);
+ listChanged = true;
+ }
+ }
+ else {
+ if (BuildConfig.DEBUG)
+ Logger.debug("submittable",
+ String.format("Resetting hint of '%s' [%s]",
+ Misc.nullIsEmpty(acc.getAccountName()),
+ balCurrency));
+ if (acc.amountHintIsSet && !TextUtils.isEmpty(acc.getAmountHint())) {
+ acc.setAmountHint(null);
+ listChanged = true;
+ }
+ }
+ }
+ }
+ }
+
+ // 5) a row with an empty account name or empty amount is guaranteed to exist for
+ // each commodity
+ if (!hasInvalidAmount) {
+ for (String balCurrency : balance.currencies()) {
+ int currEmptyRows = itemsWithEmptyAccountForCurrency.size(balCurrency);
+ int currRows = itemsForCurrency.size(balCurrency);
+ int currAccounts = itemsWithAccountForCurrency.size(balCurrency);
+ int currAmounts = itemsWithAmountForCurrency.size(balCurrency);
+ if ((currEmptyRows == 0) &&
+ ((currRows == currAccounts) || (currRows == currAmounts)))
+ {
+ // perhaps there already is an unused empty row for another currency that
+ // is not used?
+// boolean foundIt = false;
+// for (Item item : emptyRows) {
+// Currency itemCurrency = item.getCurrency();
+// String itemCurrencyName =
+// (itemCurrency == null) ? "" : itemCurrency.getName();
+// if (Misc.isZero(balance.get(itemCurrencyName))) {
+// item.setCurrency(Currency.loadByName(balCurrency));
+// item.setAmountHint(
+// Data.formatNumber(-balance.get(balCurrency)));
+// foundIt = true;
+// break;
+// }
+// }
+//
+// if (!foundIt)
+ final TransactionAccount newAcc = new TransactionAccount("", balCurrency);
+ final float bal = balance.get(balCurrency);
+ if (!Misc.isZero(bal) && currAmounts == currRows)
+ newAcc.setAmountHint(Data.formatNumber(-bal));
+ Logger.debug("submittable",
+ String.format("Adding new item with %s for currency %s",
+ newAcc.getAmountHint(), balCurrency));
+ list.add(newAcc);
+ listChanged = true;
+ }
+ }
+ }
+
+ // drop extra empty rows, not needed
+ for (String currName : emptyRowsForCurrency.currencies()) {
+ List<Item> emptyItems = emptyRowsForCurrency.getList(currName);
+ while ((list.size() > MIN_ITEMS) && (emptyItems.size() > 1)) {
+ // the list is a copy, so the empty item is no longer present
+ Item itemToRemove = emptyItems.remove(1);
+ removeItemById(list, itemToRemove.id);
+ listChanged = true;
+ }
+
+ // unused currency, remove last item (which is also an empty one)
+ if ((list.size() > MIN_ITEMS) && (emptyItems.size() == 1)) {
+ List<Item> currItems = itemsForCurrency.getList(currName);
+
+ if (currItems.size() == 1) {
+ // the list is a copy, so the empty item is no longer present
+ removeItemById(list, emptyItems.get(0).id);
+ listChanged = true;
+ }
+ }
+ }
+
+ // 6) at least two rows need to be present in the ledger
+ // (the list also contains header and trailer)
+ while (list.size() < MIN_ITEMS) {
+ list.add(new TransactionAccount(""));
+ listChanged = true;
+ }
+
+ Logger.debug("submittable", submittable ? "YES" : "NO");
+ isSubmittable.setValue(submittable);
+
+ if (BuildConfig.DEBUG)
+ dumpItemList("After submittable checks", list);
+ }
+ catch (NumberFormatException e) {
+ Logger.debug("submittable", "NO (because of NumberFormatException)");
+ isSubmittable.setValue(false);
+ }
+ catch (Exception e) {
+ e.printStackTrace();
+ Logger.debug("submittable", "NO (because of an Exception)");
+ isSubmittable.setValue(false);
+ }
+
+ if (listChanged && workingWithLiveList) {
+ setItemsWithoutSubmittableChecks(list);
+ }
+ }
+ private void removeItemById(@NotNull List<Item> list, int id) {
+ if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
+ list.removeIf(item -> item.id == id);
+ }
+ else {
+ for (Item item : list) {
+ if (item.id == id) {
+ list.remove(item);
+ break;
+ }
+ }
+ }
+ }
+ @SuppressLint("DefaultLocale")
+ private void dumpItemList(@NotNull String msg, @NotNull List<Item> list) {
+ Logger.debug("submittable", "== Dump of all items " + msg);
+ for (int i = 1; i < list.size(); i++) {
+ TransactionAccount item = list.get(i)
+ .toTransactionAccount();
+ Logger.debug("submittable", String.format("%d:%s", i, item.toString()));
+ }
+ }
+ public void setItemCurrency(int position, String newCurrency) {
+ TransactionAccount item = Objects.requireNonNull(items.getValue())
+ .get(position)
+ .toTransactionAccount();
+ final String oldCurrency = item.getCurrency();
+
+ if (Misc.equalStrings(oldCurrency, newCurrency))
+ return;
+
+ List<Item> newList = copyList();
+ newList.get(position)
+ .toTransactionAccount()
+ .setCurrency(newCurrency);
+
+ setItems(newList);
+ }
+ public boolean accountListIsEmpty() {
+ List<Item> items = Objects.requireNonNull(this.items.getValue());
+
+ for (Item item : items) {
+ if (!(item instanceof TransactionAccount))
+ continue;
+
+ if (!((TransactionAccount) item).isEmpty())
+ return false;
+ }
+
+ return true;
+ }
+
+ public static class FocusInfo {
+ int position;
+ FocusedElement element;
+ public FocusInfo(int position, @Nullable FocusedElement element) {
+ this.position = position;
+ this.element = element;
+ }
+ }
+
+ static abstract class Item {
+ private static int idDispenser = 0;
+ protected int id;
+ private Item() {
+ if (this instanceof TransactionHead)
+ id = 0;
+ else
+ synchronized (Item.class) {
+ id = ++idDispenser;
+ }
+ }
+ public Item(int id) {
+ this.id = id;
+ }
+ public static Item from(Item origin) {
+ if (origin instanceof TransactionHead)
+ return new TransactionHead((TransactionHead) origin);
+ if (origin instanceof TransactionAccount)
+ return new TransactionAccount((TransactionAccount) origin);
+ throw new RuntimeException("Don't know how to handle " + origin);
+ }
+ private static void resetIdDispenser() {
+ idDispenser = 0;
+ }
+ public int getId() {
+ return id;
+ }
+ public abstract ItemType getType();
+ public TransactionHead toTransactionHead() {
+ if (this instanceof TransactionHead)
+ return (TransactionHead) this;
+
+ throw new IllegalStateException("Wrong item type " + this);
+ }
+ public TransactionAccount toTransactionAccount() {
+ if (this instanceof TransactionAccount)
+ return (TransactionAccount) this;
+
+ throw new IllegalStateException("Wrong item type " + this);
+ }
+ public boolean equalContents(@Nullable Object item) {
+ if (item == null)
+ return false;
+
+ if (!getClass().equals(item.getClass()))
+ return false;
+
+ // shortcut - comparing same instance
+ if (item == this)
+ return true;
+
+ if (this instanceof TransactionHead)
+ return ((TransactionHead) item).equalContents((TransactionHead) this);
+ if (this instanceof TransactionAccount)
+ return ((TransactionAccount) item).equalContents((TransactionAccount) this);
+
+ throw new RuntimeException("Don't know how to handle " + this);
+ }
+ }
+
+
+//==========================================================================================
+
+ public static class TransactionHead extends Item {
+ private SimpleDate date;
+ private String description;
+ private String comment;
+ TransactionHead(String description) {
+ super();
+ this.description = description;
+ }
+ public TransactionHead(TransactionHead origin) {
+ super(origin.id);
+ date = origin.date;
+ description = origin.description;
+ comment = origin.comment;
+ }
+ public SimpleDate getDate() {
+ return date;
+ }
+ public void setDate(SimpleDate date) {
+ this.date = date;
+ }
+ public void setDate(String text) throws ParseException {
+ if (Misc.emptyIsNull(text) == null) {
+ date = null;
+ return;
+ }
+
+ date = Globals.parseLedgerDate(text);
+ }
+ /**
+ * getFormattedDate()
+ *
+ * @return nicely formatted, shortest available date representation
+ */
+ String getFormattedDate() {
+ if (date == null)
+ return null;
+
+ Calendar today = GregorianCalendar.getInstance();
+
+ if (today.get(Calendar.YEAR) != date.year) {
+ return String.format(Locale.US, "%d/%02d/%02d", date.year, date.month, date.day);
+ }
+
+ if (today.get(Calendar.MONTH) + 1 != date.month) {
+ return String.format(Locale.US, "%d/%02d", date.month, date.day);
+ }
+
+ return String.valueOf(date.day);
+ }
+ @NonNull
+ @Override
+ public String toString() {
+ @SuppressLint("DefaultLocale") StringBuilder b = new StringBuilder(
+ String.format("id:%d/%s", id, Integer.toHexString(hashCode())));
+
+ if (TextUtils.isEmpty(description))
+ b.append(" «no description»");
+ else
+ b.append(String.format(" '%s'", description));
+
+ if (date != null)
+ b.append(String.format("@%s", date));
+
+ if (!TextUtils.isEmpty(comment))
+ b.append(String.format(" /%s/", comment));
+
+ return b.toString();
+ }
+ public String getDescription() {
+ return description;
+ }
+ public void setDescription(String description) {
+ this.description = description;
+ }
+ public String getComment() {
+ return comment;
+ }
+ public void setComment(String comment) {
+ this.comment = comment;
+ }
+ @Override
+ public ItemType getType() {
+ return ItemType.generalData;
+ }
+ public LedgerTransaction asLedgerTransaction() {
+ return new LedgerTransaction(0, (date == null) ? SimpleDate.today() : date, description,
+ Objects.requireNonNull(Data.getProfile()));
+ }
+ public boolean equalContents(TransactionHead other) {
+ if (other == null)
+ return false;
+
+ return Objects.equals(date, other.date) &&
+ Misc.equalStrings(description, other.description) &&
+ Misc.equalStrings(comment, other.comment);
+ }
+ }
+
+ public static class TransactionAccount extends Item {
+ private String accountName;
+ private String amountHint;
+ private String comment;
+ @NotNull
+ private String currency = "";
+ private float amount;
+ private boolean amountSet;
+ private boolean amountValid = true;
+ @NotNull
+ private String amountText = "";
+ private FocusedElement focusedElement = FocusedElement.Account;
+ private boolean amountHintIsSet = false;
+ private boolean isLast = false;
+ private int accountNameCursorPosition;
+ public TransactionAccount(TransactionAccount origin) {
+ super(origin.id);
+ accountName = origin.accountName;
+ amount = origin.amount;
+ amountSet = origin.amountSet;
+ amountHint = origin.amountHint;
+ amountHintIsSet = origin.amountHintIsSet;
+ amountText = origin.amountText;
+ comment = origin.comment;
+ currency = origin.currency;
+ amountValid = origin.amountValid;
+ focusedElement = origin.focusedElement;
+ isLast = origin.isLast;
+ accountNameCursorPosition = origin.accountNameCursorPosition;
+ }
+ public TransactionAccount(String accountName) {
+ super();
+ this.accountName = accountName;
+ }
+ public TransactionAccount(String accountName, @NotNull String currency) {
+ super();
+ this.accountName = accountName;
+ this.currency = currency;
+ }
+ public @NotNull String getAmountText() {
+ return amountText;
+ }
+ public void setAmountText(@NotNull String amountText) {
+ this.amountText = amountText;
+ }
+ public boolean setAndCheckAmountText(@NotNull String amountText) {
+ String amtText = amountText.trim();
+ this.amountText = amtText;
+
+ boolean significantChange = false;
+
+ if (amtText.isEmpty()) {
+ if (amountSet) {
+ significantChange = true;
+ }
+ resetAmount();
+ }
+ else {
+ try {
+ amtText = amtText.replace(Data.getDecimalSeparator(), Data.decimalDot);
+ final float parsedAmount = Float.parseFloat(amtText);
+ if (!amountSet || !amountValid || !Misc.equalFloats(parsedAmount, amount))
+ significantChange = true;
+ amount = parsedAmount;
+ amountSet = true;
+ amountValid = true;
+ }
+ catch (NumberFormatException e) {
+ Logger.debug("new-trans", String.format(
+ "assuming amount is not set due to number format exception. " +
+ "input was '%s'", amtText));
+ if (amountValid) // it was valid and now it's not
+ significantChange = true;
+ amountValid = false;
+ }
+ }
+
+ return significantChange;
+ }
+ public boolean isLast() {
+ return isLast;
+ }
+ public boolean isAmountSet() {
+ return amountSet;
+ }
+ public String getAccountName() {
+ return accountName;
+ }
+ public void setAccountName(String accountName) {
+ this.accountName = accountName;
+ }
+ public float getAmount() {
+ if (!amountSet)
+ throw new IllegalStateException("Amount is not set");
+ return amount;
+ }
+ public void setAmount(float amount) {
+ this.amount = amount;
+ amountSet = true;
+ amountValid = true;
+ amountText = Data.formatNumber(amount);
+ }
+ public void resetAmount() {
+ amountSet = false;
+ amountValid = true;
+ amountText = "";
+ }
+ @Override
+ public ItemType getType() {
+ return ItemType.transactionRow;
+ }
+ public String getAmountHint() {
+ return amountHint;
+ }
+ public void setAmountHint(String amountHint) {
+ this.amountHint = amountHint;
+ amountHintIsSet = !TextUtils.isEmpty(amountHint);
+ }
+ public String getComment() {
+ return comment;
+ }
+ public void setComment(String comment) {
+ this.comment = comment;
+ }
+ @NotNull
+ public String getCurrency() {
+ return currency;
+ }
+ public void setCurrency(@org.jetbrains.annotations.Nullable String currency) {
+ this.currency = Misc.nullIsEmpty(currency);
+ }
+ public boolean isAmountValid() {
+ return amountValid;
+ }
+ public void setAmountValid(boolean amountValid) {
+ this.amountValid = amountValid;
+ }
+ public FocusedElement getFocusedElement() {
+ return focusedElement;
+ }
+ public void setFocusedElement(FocusedElement focusedElement) {
+ this.focusedElement = focusedElement;
+ }
+ public boolean isAmountHintSet() {
+ return amountHintIsSet;
+ }
+ public void setAmountHintIsSet(boolean amountHintIsSet) {
+ this.amountHintIsSet = amountHintIsSet;
+ }
+ public boolean isEmpty() {
+ return !amountSet && Misc.emptyIsNull(accountName) == null &&
+ Misc.emptyIsNull(comment) == null;
+ }
+ @SuppressLint("DefaultLocale")
+ @Override
+ @NotNull
+ public String toString() {
+ StringBuilder b = new StringBuilder();
+ b.append(String.format("id:%d/%s", id, Integer.toHexString(hashCode())));
+ if (!TextUtils.isEmpty(accountName))
+ b.append(String.format(" acc'%s'", accountName));
+
+ if (amountSet)
+ b.append(amountText)
+ .append(" [")
+ .append(amountValid ? "valid" : "invalid")
+ .append("] ")
+ .append(String.format(Locale.ROOT, " {raw %4.2f}", amount));
+ else if (amountHintIsSet)
+ b.append(String.format(" (hint %s)", amountHint));
+
+ if (!TextUtils.isEmpty(currency))
+ b.append(" ")
+ .append(currency);
+
+ if (!TextUtils.isEmpty(comment))
+ b.append(String.format(" /%s/", comment));
+
+ if (isLast)
+ b.append(" last");
+
+ return b.toString();
+ }
+ public boolean equalContents(TransactionAccount other) {
+ if (other == null)
+ return false;
+
+ boolean equal = Misc.equalStrings(accountName, other.accountName);
+ equal = equal && Misc.equalStrings(comment, other.comment) &&
+ (amountSet ? other.amountSet && amountValid == other.amountValid &&
+ Misc.equalStrings(amountText, other.amountText)
+ : !other.amountSet);
+
+ // compare amount hint only if there is no amount
+ if (!amountSet)
+ equal = equal && (amountHintIsSet ? other.amountHintIsSet &&
+ Misc.equalStrings(amountHint, other.amountHint)
+ : !other.amountHintIsSet);
+ equal = equal && Misc.equalStrings(currency, other.currency) && isLast == other.isLast;
+
+ Logger.debug("new-trans",
+ String.format("Comparing {%s} and {%s}: %s", this, other, equal));
+ return equal;
+ }
+ public int getAccountNameCursorPosition() {
+ return accountNameCursorPosition;
+ }
+ public void setAccountNameCursorPosition(int position) {
+ this.accountNameCursorPosition = position;
+ }
+ }
+
+ private static class BalanceForCurrency {
+ private final HashMap<String, Float> hashMap = new HashMap<>();
+ float get(String currencyName) {
+ Float f = hashMap.get(currencyName);
+ if (f == null) {
+ f = 0f;
+ hashMap.put(currencyName, f);
+ }
+ return f;
+ }
+ void add(String currencyName, float amount) {
+ hashMap.put(currencyName, get(currencyName) + amount);
+ }
+ Set<String> currencies() {
+ return hashMap.keySet();
+ }
+ boolean containsCurrency(String currencyName) {
+ return hashMap.containsKey(currencyName);
+ }
+ }
+
+ private static class ItemsForCurrency {
+ private final HashMap<@NotNull String, List<Item>> hashMap = new HashMap<>();
+ @NonNull
+ List<NewTransactionModel.Item> getList(@NotNull String currencyName) {
+ List<NewTransactionModel.Item> list = hashMap.get(currencyName);
+ if (list == null) {
+ list = new ArrayList<>();
+ hashMap.put(currencyName, list);
+ }
+ return list;
+ }
+ void add(@NotNull String currencyName, @NonNull NewTransactionModel.Item item) {
+ getList(Objects.requireNonNull(currencyName)).add(item);
+ }
+ int size(@NotNull String currencyName) {
+ return this.getList(Objects.requireNonNull(currencyName))
+ .size();
+ }
+ Set<String> currencies() {
+ return hashMap.keySet();
+ }
+ }
+}
projects / mobile-ledger.git / commitdiff
