firefly-iii/app/Validation/TransactionValidation.php
2021-04-06 08:51:27 +02:00

608 lines
23 KiB
PHP

<?php
/**
* TransactionValidation.php
* Copyright (c) 2019 james@firefly-iii.org
*
* This file is part of Firefly III (https://github.com/firefly-iii).
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
declare(strict_types=1);
namespace FireflyIII\Validation;
use FireflyIII\Models\Account;
use FireflyIII\Models\Transaction;
use FireflyIII\Models\TransactionGroup;
use FireflyIII\Models\TransactionJournal;
use Illuminate\Validation\Validator;
use Log;
/**
* Trait TransactionValidation
*/
trait TransactionValidation
{
/**
* Validates the given account information. Switches on given transaction type.
*
* @param Validator $validator
*/
public function validateAccountInformation(Validator $validator): void
{
Log::debug('Now in validateAccountInformation()');
$transactions = $this->getTransactionsArray($validator);
$data = $validator->getData();
$transactionType = $data['type'] ?? 'invalid';
Log::debug(sprintf('Going to loop %d transaction(s)', count($transactions)));
/**
* @var int $index
* @var array $transaction
*/
foreach ($transactions as $index => $transaction) {
if (!is_int($index)) {
continue;
}
$this->validateSingleAccount($validator, $index, $transactionType, $transaction);
}
}
/**
* @param Validator $validator
*
* @return array
*/
protected function getTransactionsArray(Validator $validator): array
{
$data = $validator->getData();
$transactions = $data['transactions'] ?? [];
if (!is_countable($transactions)) {
Log::error(sprintf('Transactions array is not countable, because its a %s', gettype($transactions)));
return [];
}
// a superfluous check but you never know.
if (!is_array($transactions)) {
Log::error(sprintf('Transactions array is not an array, because its a %s', gettype($transactions)));
return [];
}
return $transactions;
}
/**
* @param Validator $validator
* @param int $index
* @param string $transactionType
* @param array $transaction
*/
protected function validateSingleAccount(Validator $validator, int $index, string $transactionType, array $transaction): void
{
/** @var AccountValidator $accountValidator */
$accountValidator = app(AccountValidator::class);
$transactionType = $transaction['type'] ?? $transactionType;
$accountValidator->setTransactionType($transactionType);
// validate source account.
$sourceId = array_key_exists('source_id', $transaction) ? (int)$transaction['source_id'] : null;
$sourceName = array_key_exists('source_name', $transaction) ? (string)$transaction['source_name'] : null;
$sourceIban = array_key_exists('source_iban', $transaction) ? (string)$transaction['source_iban'] : null;
$validSource = $accountValidator->validateSource($sourceId, $sourceName, $sourceIban);
// do something with result:
if (false === $validSource) {
$validator->errors()->add(sprintf('transactions.%d.source_id', $index), $accountValidator->sourceError);
$validator->errors()->add(sprintf('transactions.%d.source_name', $index), $accountValidator->sourceError);
return;
}
// validate destination account
$destinationId = array_key_exists('destination_id', $transaction) ? (int)$transaction['destination_id'] : null;
$destinationName = array_key_exists('destination_name', $transaction) ? (string)$transaction['destination_name'] : null;
$destinationIban = array_key_exists('destination_iban', $transaction) ? (string)$transaction['destination_iban'] : null;
$validDestination = $accountValidator->validateDestination($destinationId, $destinationName, $destinationIban);
// do something with result:
if (false === $validDestination) {
$validator->errors()->add(sprintf('transactions.%d.destination_id', $index), $accountValidator->destError);
$validator->errors()->add(sprintf('transactions.%d.destination_name', $index), $accountValidator->destError);
}
}
/**
* Validates the given account information. Switches on given transaction type.
*
* @param Validator $validator
* @param TransactionGroup $transactionGroup
*/
public function validateAccountInformationUpdate(Validator $validator, TransactionGroup $transactionGroup): void
{
Log::debug('Now in validateAccountInformationUpdate()');
$transactions = $this->getTransactionsArray($validator);
/**
* @var int $index
* @var array $transaction
*/
foreach ($transactions as $index => $transaction) {
$this->validateSingleUpdate($validator, $index, $transaction, $transactionGroup);
}
}
/**
* @param Validator $validator
* @param int $index
* @param array $transaction
* @param TransactionGroup $transactionGroup
*/
protected function validateSingleUpdate(Validator $validator, int $index, array $transaction, TransactionGroup $transactionGroup): void
{
Log::debug('Now validating single account update in validateSingleUpdate()');
// if no account types are given, just skip the check.
if (
!array_key_exists('source_id', $transaction)
&& !array_key_exists('source_name', $transaction)
&& !array_key_exists('destination_id', $transaction)
&& !array_key_exists('destination_name', $transaction)) {
Log::debug('No account data has been submitted so will not validating account info.');
return;
}
// create validator:
/** @var AccountValidator $accountValidator */
$accountValidator = app(AccountValidator::class);
// get the transaction type using the original transaction group:
$accountValidator->setTransactionType($this->getTransactionType($transactionGroup, []));
// validate if the submitted source and / or name are valid
if (array_key_exists('source_id', $transaction) || array_key_exists('source_name', $transaction)) {
Log::debug('Will try to validate source account information.');
$sourceId = (int)($transaction['source_id'] ?? 0);
$sourceName = $transaction['source_name'] ?? null;
$validSource = $accountValidator->validateSource($sourceId, $sourceName, null);
// do something with result:
if (false === $validSource) {
Log::warning('Looks like the source account is not valid so complain to the user about it.');
$validator->errors()->add(sprintf('transactions.%d.source_id', $index), $accountValidator->sourceError);
$validator->errors()->add(sprintf('transactions.%d.source_name', $index), $accountValidator->sourceError);
return;
}
Log::debug('Source account info is valid.');
}
if (array_key_exists('destination_id', $transaction) || array_key_exists('destination_name', $transaction)) {
Log::debug('Will try to validate destination account information.');
// at this point the validator may not have a source account, because it was never submitted for validation.
// must add it ourselves or the validator can never check if the destination is correct.
// the $transaction array must have a journal id or it's just one, this was validated before.
if (null === $accountValidator->source) {
Log::debug('Account validator has no source account, must find it.');
$source = $this->getOriginalSource($transaction, $transactionGroup);
if (null !== $source) {
Log::debug('Found a source!');
$accountValidator->source = $source;
}
}
$destinationId = (int)($transaction['destination_id'] ?? 0);
$destinationName = $transaction['destination_name'] ?? null;
$validDestination = $accountValidator->validateDestination($destinationId, $destinationName, null);
// do something with result:
if (false === $validDestination) {
Log::warning('Looks like the destination account is not valid so complain to the user about it.');
$validator->errors()->add(sprintf('transactions.%d.destination_id', $index), $accountValidator->destError);
$validator->errors()->add(sprintf('transactions.%d.destination_name', $index), $accountValidator->destError);
}
Log::debug('Destination account info is valid.');
}
Log::debug('Done with validateSingleUpdate().');
}
/**
* @param TransactionGroup $group
* @param array $transactions
*
* @return string
*/
private function getTransactionType(TransactionGroup $group, array $transactions): string
{
return $transactions[0]['type'] ?? strtolower($group->transactionJournals()->first()->transactionType->type);
}
/**
* @param array $transaction
* @param TransactionGroup $transactionGroup
*
* @return Account|null
*/
private function getOriginalSource(array $transaction, TransactionGroup $transactionGroup): ?Account
{
if (1 === $transactionGroup->transactionJournals->count()) {
$journal = $transactionGroup->transactionJournals->first();
return $journal->transactions()->where('amount', '<', 0)->first()->account;
}
/** @var TransactionJournal $journal */
foreach ($transactionGroup->transactionJournals as $journal) {
if ((int)$journal->id === (int)$transaction['transaction_journal_id']) {
return $journal->transactions()->where('amount', '<', 0)->first()->account;
}
}
return null;
}
/**
* Adds an error to the validator when there are no transactions in the array of data.
*
* @param Validator $validator
*/
public function validateOneRecurrenceTransaction(Validator $validator): void
{
Log::debug('Now in validateOneRecurrenceTransaction()');
$transactions = $this->getTransactionsArray($validator);
// need at least one transaction
if (0 === count($transactions)) {
$validator->errors()->add('transactions', (string)trans('validation.at_least_one_transaction'));
}
}
/**
* Adds an error to the validator when there are no transactions in the array of data.
*
* @param Validator $validator
*/
public function validateOneTransaction(Validator $validator): void
{
Log::debug('Now in validateOneTransaction()');
$transactions = $this->getTransactionsArray($validator);
// need at least one transaction
if (0 === count($transactions)) {
$validator->errors()->add('transactions.0.description', (string)trans('validation.at_least_one_transaction'));
Log::debug('Added error: at_least_one_transaction.');
return;
}
Log::debug('Added NO errors.');
}
/**
* @param Validator $validator
*/
public function validateTransactionArray(Validator $validator): void
{
$transactions = $this->getTransactionsArray($validator);
foreach ($transactions as $key => $value) {
if (!is_int($key)) {
$validator->errors()->add('transactions.0.description', (string)trans('validation.at_least_one_transaction'));
Log::debug('Added error: at_least_one_transaction.');
return;
}
}
}
/**
* All types of splits must be equal.
*
* @param Validator $validator
*/
public function validateTransactionTypes(Validator $validator): void
{
Log::debug('Now in validateTransactionTypes()');
$transactions = $this->getTransactionsArray($validator);
$types = [];
foreach ($transactions as $transaction) {
$types[] = $transaction['type'] ?? 'invalid';
}
$unique = array_unique($types);
if (count($unique) > 1) {
$validator->errors()->add('transactions.0.type', (string)trans('validation.transaction_types_equal'));
return;
}
$first = $unique[0] ?? 'invalid';
if ('invalid' === $first) {
$validator->errors()->add('transactions.0.type', (string)trans('validation.invalid_transaction_type'));
}
}
/**
* All types of splits must be equal.
*
* @param Validator $validator
* @param TransactionGroup $transactionGroup
*/
public function validateTransactionTypesForUpdate(Validator $validator, TransactionGroup $transactionGroup): void
{
Log::debug('Now in validateTransactionTypesForUpdate()');
$transactions = $this->getTransactionsArray($validator);
$types = [];
foreach ($transactions as $transaction) {
$originalType = $this->getOriginalType((int)($transaction['transaction_journal_id'] ?? 0));
// if type is not set, fall back to the type of the journal, if one is given.
$types[] = $transaction['type'] ?? $originalType;
}
$unique = array_unique($types);
if (count($unique) > 1) {
Log::warning('Add error for mismatch transaction types.');
$validator->errors()->add('transactions.0.type', (string)trans('validation.transaction_types_equal'));
return;
}
Log::debug('No errors in validateTransactionTypesForUpdate()');
}
/**
* @param int $journalId
*
* @return string
*/
private function getOriginalType(int $journalId): string
{
if (0 === $journalId) {
return 'invalid';
}
/** @var TransactionJournal|null $journal */
$journal = TransactionJournal::with(['transactionType'])->find($journalId);
if (null !== $journal) {
return strtolower($journal->transactionType->type);
}
return 'invalid';
}
/**
* @param Validator $validator
*/
private function validateEqualAccounts(Validator $validator): void
{
Log::debug('Now in validateEqualAccounts()');
$transactions = $this->getTransactionsArray($validator);
// needs to be split
if (count($transactions) < 2) {
return;
}
$type = $transactions[0]['type'] ?? 'withdrawal';
$sources = [];
$dests = [];
foreach ($transactions as $transaction) {
$sources[] = sprintf('%d-%s', $transaction['source_id'] ?? 0, $transaction['source_name'] ?? '');
$dests[] = sprintf('%d-%s', $transaction['destination_id'] ?? 0, $transaction['destination_name'] ?? '');
}
$sources = array_unique($sources);
$dests = array_unique($dests);
switch ($type) {
default:
case 'withdrawal':
if (count($sources) > 1) {
$validator->errors()->add('transactions.0.source_id', (string)trans('validation.all_accounts_equal'));
}
break;
case 'deposit':
if (count($dests) > 1) {
$validator->errors()->add('transactions.0.destination_id', (string)trans('validation.all_accounts_equal'));
}
break;
case'transfer':
if (count($sources) > 1 || count($dests) > 1) {
$validator->errors()->add('transactions.0.source_id', (string)trans('validation.all_accounts_equal'));
$validator->errors()->add('transactions.0.destination_id', (string)trans('validation.all_accounts_equal'));
}
break;
}
}
/**
* @param Validator $validator
* @param TransactionGroup $transactionGroup
*/
private function validateEqualAccountsForUpdate(Validator $validator, TransactionGroup $transactionGroup): void
{
Log::debug('Now in validateEqualAccountsForUpdate()');
$transactions = $this->getTransactionsArray($validator);
if (2 !== count($transactions)) {
Log::debug('Less than 2 transactions, do nothing.');
return;
}
$type = $this->getTransactionType($transactionGroup, $transactions);
// compare source ID's, destination ID's, source names and destination names.
// I think I can get away with one combination being equal, as long as the rest
// of the code picks up on this as well.
// either way all fields must be blank or all equal
// but if ID's are equal don't bother with the names.
$comparison = $this->collectComparisonData($transactions);
$result = $this->compareAccountData($type, $comparison);
if (false === $result) {
if ('withdrawal' === $type) {
$validator->errors()->add('transactions.0.source_id', (string)trans('validation.all_accounts_equal'));
}
if ('deposit' === $type) {
$validator->errors()->add('transactions.0.destination_id', (string)trans('validation.all_accounts_equal'));
}
if ('transfer' === $type) {
$validator->errors()->add('transactions.0.source_id', (string)trans('validation.all_accounts_equal'));
$validator->errors()->add('transactions.0.destination_id', (string)trans('validation.all_accounts_equal'));
}
Log::warning('Add error about equal accounts.');
return;
}
Log::debug('No errors found in validateEqualAccountsForUpdate');
}
/**
* @param array $transactions
*
* @return array
*/
private function collectComparisonData(array $transactions): array
{
$fields = ['source_id', 'destination_id', 'source_name', 'destination_name'];
$comparison = [];
foreach ($fields as $field) {
$comparison[$field] = [];
/** @var array $transaction */
foreach ($transactions as $transaction) {
// source or destination may be omitted. If this is the case, use the original source / destination name + ID.
$originalData = $this->getOriginalData((int)($transaction['transaction_journal_id'] ?? 0));
// get field.
$comparison[$field][] = $transaction[$field] ?? $originalData[$field];
}
}
return $comparison;
}
/**
* @param int $journalId
*
* @return array
*/
private function getOriginalData(int $journalId): array
{
$return = [
'source_id' => 0,
'source_name' => '',
'destination_id' => 0,
'destination_name' => '',
];
if (0 === $journalId) {
return $return;
}
/** @var Transaction $source */
$source = Transaction::where('transaction_journal_id', $journalId)->where('amount', '<', 0)->with(['account'])->first();
if (null !== $source) {
$return['source_id'] = $source->account_id;
$return['source_name'] = $source->account->name;
}
/** @var Transaction $destination */
$destination = Transaction::where('transaction_journal_id', $journalId)->where('amount', '>', 0)->with(['account'])->first();
if (null !== $source) {
$return['destination_id'] = $destination->account_id;
$return['destination_name'] = $destination->account->name;
}
return $return;
}
/**
* @param string $type
* @param array $comparison
*
* @return bool
*/
private function compareAccountData(string $type, array $comparison): bool
{
switch ($type) {
default:
case 'withdrawal':
return $this->compareAccountDataWithdrawal($comparison);
case 'deposit':
return $this->compareAccountDataDeposit($comparison);
case 'transfer':
return $this->compareAccountDataTransfer($comparison);
}
}
/**
* @param array $comparison
*
* @return bool
*/
private function compareAccountDataWithdrawal(array $comparison): bool
{
if ($this->arrayEqual($comparison['source_id'])) {
// source ID's are equal, return void.
return true;
}
if ($this->arrayEqual($comparison['source_name'])) {
// source names are equal, return void.
return true;
}
return false;
}
/**
* @param array $array
*
* @return bool
*/
private function arrayEqual(array $array): bool
{
return 1 === count(array_unique($array));
}
/**
* @param array $comparison
*
* @return bool
*/
private function compareAccountDataDeposit(array $comparison): bool
{
if ($this->arrayEqual($comparison['destination_id'])) {
// destination ID's are equal, return void.
return true;
}
if ($this->arrayEqual($comparison['destination_name'])) {
// destination names are equal, return void.
return true;
}
return false;
}
/**
* @param array $comparison
*
* @return bool
*/
private function compareAccountDataTransfer(array $comparison): bool
{
if ($this->arrayEqual($comparison['source_id'])) {
// source ID's are equal, return void.
return true;
}
if ($this->arrayEqual($comparison['source_name'])) {
// source names are equal, return void.
return true;
}
if ($this->arrayEqual($comparison['destination_id'])) {
// destination ID's are equal, return void.
return true;
}
if ($this->arrayEqual($comparison['destination_name'])) {
// destination names are equal, return void.
return true;
}
return false;
}
}