From c61afab6edd010722240e8a92528ddb06b574d7f Mon Sep 17 00:00:00 2001 From: Damyan Ivanov Date: Sun, 17 Nov 2019 19:25:14 +0200 Subject: [PATCH] rework checkTransactionSubmittable more debug, clear rules, and hints when decision is made --- .../ui/activity/NewTransactionModel.java | 157 ++++++++++-------- 1 file changed, 91 insertions(+), 66 deletions(-) diff --git a/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java b/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java index f6d556e5..e1166b2e 100644 --- a/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java +++ b/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java @@ -25,7 +25,9 @@ import androidx.lifecycle.MutableLiveData; import androidx.lifecycle.Observer; import androidx.lifecycle.ViewModel; +import net.ktnx.mobileledger.BuildConfig; import net.ktnx.mobileledger.model.LedgerTransactionAccount; +import net.ktnx.mobileledger.utils.Logger; import net.ktnx.mobileledger.utils.Misc; import org.jetbrains.annotations.NotNull; @@ -34,12 +36,12 @@ import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; +import java.util.List; import java.util.Locale; import java.util.regex.Matcher; import java.util.regex.Pattern; import static net.ktnx.mobileledger.utils.Logger.debug; -import static net.ktnx.mobileledger.utils.Misc.isZero; public class NewTransactionModel extends ViewModel { static final Pattern reYMD = Pattern.compile("^\\s*(\\d+)\\d*/\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$"); @@ -123,28 +125,35 @@ public class NewTransactionModel extends ViewModel { return trailer; } - // rules: - // 1) at least two account names - // 2) each amount must have account name - // 3) amounts must balance to 0, or - // 3a) there must be exactly one empty amount - // 4) empty accounts with empty amounts are ignored - // 5) a row with an empty account name or empty amount is guaranteed to exist + /* + A transaction is submittable if: + 0) has description + 1) has at least two account names + 2) each amount has account name + 3) amounts must balance to 0, or + 3a) there must be exactly one empty amount (with account) + 4) empty accounts with empty amounts are ignored + 5) a row with an empty account name or empty amount is guaranteed to exist + */ @SuppressLint("DefaultLocale") public void checkTransactionSubmittable(NewTransactionItemsAdapter adapter) { int accounts = 0; - int accounts_with_values = 0; int amounts = 0; - int amounts_with_accounts = 0; int empty_rows = 0; - Item empty_amount = null; - boolean single_empty_amount = false; - boolean single_empty_amount_has_account = false; - float running_total = 0f; + float balance = 0f; final String descriptionText = getDescription(); - final boolean have_description = ((descriptionText != null) && !descriptionText.isEmpty()); + boolean submittable = true; + List itemsWithEmptyAmount = new ArrayList<>(); + List itemsWithAccountAndEmptyAmount = new ArrayList<>(); try { + if ((descriptionText == null) || descriptionText.trim() + .isEmpty()) + { + Logger.debug("submittable", "Transaction not submittable: missing description"); + submittable = false; + } + for (int i = 0; i < this.items.size(); i++) { Item item = this.items.get(i); @@ -153,80 +162,96 @@ public class NewTransactionModel extends ViewModel { .trim(); if (acc_name.isEmpty()) { empty_rows++; - } - else { - accounts++; if (acc.isAmountSet()) { - accounts_with_values++; + // 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, acc.getAmount())); + submittable = false; } } + else { + accounts++; + } if (acc.isAmountSet()) { amounts++; - if (!acc_name.isEmpty()) - amounts_with_accounts++; - running_total += acc.getAmount(); + balance += acc.getAmount(); } else { - if (empty_amount == null) { - empty_amount = item; - single_empty_amount = true; - single_empty_amount_has_account = !acc_name.isEmpty(); + itemsWithEmptyAmount.add(item); + + if (!acc_name.isEmpty()) { + itemsWithAccountAndEmptyAmount.add(item); } - else if (!acc_name.isEmpty()) - single_empty_amount = false; } } - if ((empty_rows == 0) && - ((this.items.size() == accounts) || (this.items.size() == amounts))) - { - adapter.addRow(); + // 1) has at least two account names + if (accounts < 2) { + Logger.debug("submittable", + String.format("Transaction not submittable: only %d account names", + accounts)); + submittable = false; } - for (NewTransactionModel.Item item : items) { - - final LedgerTransactionAccount acc = item.getAccount(); - if (acc.isAmountSet()) - continue; - - if (single_empty_amount) { - if (item.equals(empty_amount)) { - empty_amount.setAmountHint(Misc.isZero(running_total) ? null - : String.format( - "%1.2f", - -running_total)); - continue; - } - } - else { - // no single empty account and this account's amount is not set - // => hint should be '0.00' + // 3) amount must balance to 0, or + // 3a) there must be exactly one empty amount (with account) + if (Misc.isZero(balance)) { + for (Item item : items) { item.setAmountHint(null); } - } + else { + int balanceReceiversCount = itemsWithAccountAndEmptyAmount.size(); + if (balanceReceiversCount != 1) { + Logger.debug("submittable", (balanceReceiversCount == 0) ? + "Transaction not submittable: non-zero balance " + + "with no empty amounts with accounts" : + "Transaction not submittable: non-zero balance " + + "with multiple empty amounts with accounts"); + submittable = false; + } - debug("submittable", String.format(Locale.US, - "%s, accounts=%d, accounts_with_values=%s, " + - "amounts_with_accounts=%d, amounts=%d, running_total=%1.2f, " + - "single_empty_with_acc=%s", have_description ? "description" : "NO description", - accounts, accounts_with_values, amounts_with_accounts, amounts, running_total, - (single_empty_amount && single_empty_amount_has_account) ? "true" : "false")); + // suggest off-balance amount to a row and remove hints on other rows + Item receiver = null; + if (!itemsWithAccountAndEmptyAmount.isEmpty()) + receiver = itemsWithAccountAndEmptyAmount.get(0); + else if (!itemsWithEmptyAmount.isEmpty()) + receiver = itemsWithEmptyAmount.get(0); + + for (Item item : items) { + if (item.equals(receiver)) { + Logger.debug("submittable", + String.format("Setting amount hint to %1.2f", -balance)); + item.setAmountHint(String.format("%1.2f", -balance)); + } + else + item.setAmountHint(null); + } + } - if (have_description && (accounts >= 2) && (accounts_with_values >= (accounts - 1)) && - (amounts_with_accounts == amounts) && - (single_empty_amount && single_empty_amount_has_account || isZero(running_total))) + // 5) a row with an empty account name or empty amount is guaranteed to exist + if ((empty_rows == 0) && + ((this.items.size() == accounts) || (this.items.size() == amounts))) { - debug("submittable", "YES"); - isSubmittable.setValue(true); - } - else { - debug("submittable", "NO"); - isSubmittable.setValue(false); + adapter.addRow(); } + + debug("submittable", submittable ? "YES" : "NO"); + isSubmittable.setValue(submittable); + + if (BuildConfig.DEBUG) { + debug("submittable", "== Dump of all items"); + for (int i = 0; i < items.size(); i++) { + Item item = items.get(i); + LedgerTransactionAccount acc = item.getAccount(); + debug("submittable", String.format("Item %2d: [%4.2f] %s", i, + acc.isAmountSet() ? acc.getAmount() : 0, acc.getAccountName())); + } + } } catch (NumberFormatException e) { debug("submittable", "NO (because of NumberFormatException)"); -- 2.39.2