public static function gen()
{
self::test();
list($old, $mg) = static::_readMeta();
if (!is_array($old)) {
$old = [];
}
$new = Table::getList();
$migration = '';
foreach ($old as $table) {
if (empty($new[$table->name])) {
$migration .= "DROP TABLE `{$table->name}`;\n";
}
}
foreach ($new as $table) {
if (empty($old[$table->name])) {
$migration .= $table->getCreateTable() . "\n";
} else {
$migration .= $table->diff($old[$table->name]);
}
}
if (!trim($migration)) {
echo "Nothing to do.\n";
return;
}
$fileName = static::_getNewMigrationFileName();
file_put_contents(static::_dir() . $fileName, "<?php\n\n\$db->execute(\"\n\t" . str_replace("\n", "\n\t", $migration) . "\n\");");
echo $migration . "\n";
echo "Created file {$fileName}\n";
$mg[] = $fileName;
static::_writeMeta($new, $mg);
}
public function diff(Table $oldTable)
{
$ret = [];
$old = $oldTable->columns;
$new = $this->columns;
if ($this->engine != $oldTable->engine) {
$ret[] = "ALTER TABLE `{$this->name}` ENGINE = {$this->engine};";
}
foreach ($new as $name => $column) {
if (isset($old[$name])) {
$str = $column->getQueryAdd();
if ($str != $old[$name]->getQueryAdd()) {
$ret[] = $column->getQueryChange();
}
} else {
if (!isset($old[$name])) {
$ret[] = $column->getQueryAdd();
}
}
}
$old = $oldTable->getKeys();
$new = $this->getKeys();
foreach ($old as $key => $entries) {
if (!isset($new[$key])) {
$ret[] = "ALTER TABLE `{$this->name}` DROP INDEX `{$key}`;";
}
}
foreach ($new as $key => $group) {
if (isset($old[$key])) {
$str = $group->getQueryAdd();
if ($str != $old[$key]->getQueryAdd()) {
$ret[] = $group->getQueryDrop();
$ret[] = $group->getQueryAdd();
}
} else {
$ret[] = $group->getQueryAdd();
}
}
$ret = trim(implode("\n", $ret));
return $ret ? $ret . "\n" : '';
}
