213 lines
7.0 KiB
PHP
213 lines
7.0 KiB
PHP
<?php
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// Make sure we are called from index.php
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if (!defined('SECURITY'))
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die('Hacking attempt');
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class Transaction {
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private $sError = '';
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private $table = 'transactions';
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private $tableBlocks = 'blocks';
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public function __construct($debug, $mysqli, $config, $block) {
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$this->debug = $debug;
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$this->mysqli = $mysqli;
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$this->config = $config;
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$this->block = $block;
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$this->debug->append("Instantiated Transaction class", 2);
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}
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// get and set methods
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private function setErrorMessage($msg) {
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$this->sError = $msg;
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}
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public function getError() {
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return $this->sError;
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}
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/**
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* Add a new transaction to our class table
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* @param account_id int Account ID to book transaction for
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* @param amount float Coin amount
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* @param type string Transaction type [Credit, Debit_AP, Debit_MP, Fee, Donation, Orphan_Credit, Orphan_Fee, Orphan_Donation]
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* @param block_id int Block ID to link transaction to [optional]
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* @param coin_address string Coin address for this transaction [optional]
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* @return bool
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**/
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public function addTransaction($account_id, $amount, $type='Credit', $block_id=NULL, $coin_address=NULL) {
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$stmt = $this->mysqli->prepare("INSERT INTO $this->table (account_id, amount, block_id, type, coin_address) VALUES (?, ?, ?, ?, ?)");
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if ($this->checkStmt($stmt)) {
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$stmt->bind_param("idiss", $account_id, $amount, $block_id, $type, $coin_address);
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if ($stmt->execute()) {
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$this->setErrorMessage("Failed to store transaction");
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$stmt->close();
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return true;
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}
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}
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return false;
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}
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/**
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* Sometimes transactions become orphans when a block associated to them is orphaned
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* Updates the transaction types to Orphan_<type>
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* @param block_id int Orphaned block ID
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* @return bool
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**/
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public function setOrphan($block_id) {
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$this->debug->append("STA " . __METHOD__, 4);
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$stmt = $this->mysqli->prepare("
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UPDATE $this->table
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SET type = 'Orphan_Credit'
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WHERE type = 'Credit'
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AND block_id = ?
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");
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if (!($this->checkStmt($stmt) && $stmt->bind_param('i', $block_id) && $stmt->execute())) {
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$this->debug->append("Failed to set orphan credit transactions for $block_id");
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return false;
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}
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$stmt = $this->mysqli->prepare("
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UPDATE $this->table
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SET type = 'Orphan_Fee'
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WHERE type = 'Fee'
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AND block_id = ?
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");
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if (!($this->checkStmt($stmt) && $stmt->bind_param('i', $block_id) && $stmt->execute())) {
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$this->debug->append("Failed to set orphan fee transactions for $block_id");
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return false;
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}
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$stmt = $this->mysqli->prepare("
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UPDATE $this->table
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SET type = 'Orphan_Donation'
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WHERE type = 'Donation'
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AND block_id = ?
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");
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if (!($this->checkStmt($stmt) && $stmt->bind_param('i', $block_id) && $stmt->execute())) {
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$this->debug->append("Failed to set orphan donation transactions for $block_id");
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return false;
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}
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return true;
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}
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/**
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* Get all transactions from start for account_id
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* @param account_id int Account ID
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* @param start int Starting point, id of transaction
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* @return data array Database fields as defined in SELECT
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**/
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public function getTransactions($account_id, $start=0) {
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$this->debug->append("STA " . __METHOD__, 4);
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$stmt = $this->mysqli->prepare("
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SELECT
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t.id AS id,
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t.type AS type,
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t.amount AS amount,
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t.coin_address AS coin_address,
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t.timestamp AS timestamp,
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b.height AS height,
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b.confirmations AS confirmations
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FROM transactions AS t
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LEFT JOIN blocks AS b ON t.block_id = b.id
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WHERE t.account_id = ?
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ORDER BY id DESC");
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if ($this->checkStmt($stmt)) {
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if(!$stmt->bind_param('i', $account_id)) return false;
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$stmt->execute();
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$result = $stmt->get_result();
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return $result->fetch_all(MYSQLI_ASSOC);
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}
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$this->debug->append('Unable to fetch transactions');
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return false;
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}
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private function checkStmt($bState) {
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if ($bState ===! true) {
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$this->debug->append("Failed to prepare statement: " . $this->mysqli->error);
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$this->setErrorMessage('Internal application Error');
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return false;
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}
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return true;
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}
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/**
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* Get total balance for all users locked in wallet
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* This includes any outstanding unconfirmed transactions!
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* @param none
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* @return data double Amount locked for users
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**/
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public function getLockedBalance() {
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$this->debug->append("STA " . __METHOD__, 4);
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$stmt = $this->mysqli->prepare("
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SELECT ROUND(IFNULL(t1.credit, 0) - IFNULL(t2.debit, 0) - IFNULL(t3.other, 0), 8) AS balance
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FROM
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(
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SELECT sum(t.amount) AS credit
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FROM $this->table AS t
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WHERE t.type = 'Credit'
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) AS t1,
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(
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SELECT sum(t.amount) AS debit
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FROM $this->table AS t
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WHERE t.type IN ('Debit_MP', 'Debit_AP')
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) AS t2,
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(
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SELECT sum(t.amount) AS other
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FROM " . $this->table . " AS t
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WHERE t.type IN ('Donation','Fee')
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) AS t3");
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if ($this->checkStmt($stmt) && $stmt->execute() && $stmt->bind_result($dBalance) && $stmt->fetch())
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return $dBalance;
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// Catchall
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$this->setErrorMessage('Unable to find locked credits for all users');
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$this->debug->append('MySQL query failed : ' . $this->mysqli->error);
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return false;
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}
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/**
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* Get an accounts total balance
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* @param account_id int Account ID
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* @return data float Credit - Debit - Fees - Donation
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**/
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public function getBalance($account_id) {
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$this->debug->append("STA " . __METHOD__, 4);
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$stmt = $this->mysqli->prepare("
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SELECT ROUND(IFNULL(t1.credit, 0) - IFNULL(t2.debit, 0) - IFNULL(t3.other, 0), 8) AS balance
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FROM
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(
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SELECT sum(t.amount) AS credit
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FROM $this->table AS t
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LEFT JOIN " . $this->block->getTableName() . " AS b ON t.block_id = b.id
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WHERE t.type = 'Credit'
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AND b.confirmations >= ?
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AND t.account_id = ?
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) AS t1,
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(
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SELECT sum(t.amount) AS debit
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FROM $this->table AS t
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WHERE t.type IN ('Debit_MP', 'Debit_AP')
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AND t.account_id = ?
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) AS t2,
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(
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SELECT sum(t.amount) AS other
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FROM $this->table AS t
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LEFT JOIN " . $this->block->getTableName() . " AS b ON t.block_id = b.id
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WHERE t.type IN ('Donation','Fee')
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AND b.confirmations >= ?
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AND t.account_id = ?
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) AS t3
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");
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if ($this->checkStmt($stmt)) {
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$stmt->bind_param("iiiii", $this->config['confirmations'], $account_id, $account_id, $this->config['confirmations'], $account_id);
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if (!$stmt->execute()) {
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$this->debug->append("Unable to execute statement: " . $stmt->error);
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$this->setErrorMessage("Fetching balance failed");
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}
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$result = $stmt->get_result();
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$stmt->close();
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return $result->fetch_object()->balance;
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}
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return false;
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}
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}
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$transaction = new Transaction($debug, $mysqli, $config, $block);
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