#!/usr/bin/php
<?php
/* Upgarde script for https://github.com/MPOS/php-mpos/issues/1981 */

// Change to working directory
chdir(dirname(__FILE__));

// Include all settings and classes
require_once('shared.inc.php');

// Version information
$db_version_old = '0.0.7';  // What version do we expect
$db_version_new = '0.0.8';  // What is the new version we wish to upgrade to
$db_version_now = $setting->getValue('DB_VERSION');  // Our actual version installed

// Upgrade specific variables
$dDifficulty = POW(2, ($config['difficulty'] - 16));
$aSql[] = "UPDATE " . $statistics->getTableName() . " SET valid = valid * $dDifficulty, invalid = invalid * $dDifficulty, pplns_valid = pplns_valid * $dDifficulty, pplns_invalid = pplns_invalid * $dDifficulty";
$aSql[] = "UPDATE " . $block->getTableName() . "      SET shares = shares * $dDifficulty";
$aSql[] = "UPDATE " . $setting->getTableName() . "    SET value = '0.0.8' WHERE name = 'DB_VERSION'";

if ($db_version_now == $db_version_old && version_compare($db_version_now, DB_VERSION, '<')) {
  // Run the upgrade
  echo 'Starting database migration to version ' . $db_version_new . PHP_EOL;
  foreach ($aSql as $sql) {
    echo '  Preparing: ' . $sql . PHP_EOL;
    $stmt = $mysqli->prepare($sql);
    if ($stmt && $stmt->execute()) {
      echo '    success' . PHP_EOL;
    } else {
      echo '    failed: ' . $mysqli->error . PHP_EOL;
      exit(1);
    }
  }
}
?>