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<?php
namespace Inlm\SchemaGenerator;
use CzProject\SqlSchema;
class SchemaGenerator
{
private $extractor;
private $adapter;
private $dumper;
private $logger;
private $databaseType;
private $options;
private $customTypes;
private $testMode = FALSE;
public function __construct(IExtractor $extractor, IAdapter $adapter, IDumper $dumper, ILogger $logger = NULL, $databaseType = Database::MYSQL)
{
$this->extractor = $extractor;
$this->adapter = $adapter;
$this->dumper = $dumper;
$this->logger = $logger;
$this->databaseType = $databaseType;
$this->prepareDefaults($databaseType);
}
public function setCustomType($name, $dbType, $dbParameters = array(), array $dbOptions = array())
{
$this->customTypes[strtolower($name)] = new DataType($dbType, $dbParameters, $dbOptions);
return $this;
}
public function setOption($option, $value)
{
if ($value === NULL) {
$this->removeOption($option);
} else {
$this->options[$option] = $value;
}
return $this;
}
public function removeOption($option)
{
unset($this->options[$option]);
return $this;
}
public function setTestMode($testMode = TRUE)
{
$this->testMode = $testMode;
return $this;
}
public function generate($description = NULL)
{
if ($this->testMode) {
$this->log('TEST MODE');
}
$configOld = $this->adapter->load();
$options = $configOld->getOptions() + $this->options;
$this->log('Generating schema');
$configNew = new Configuration($this->extractor->generateSchema($options, $this->customTypes, $this->databaseType));
$configNew->setOptions($options);
$this->log('Generating diff');
$schemaDiff = new DiffGenerator($configOld->getSchema(), $configNew->getSchema());
$this->log('Generating migrations');
$this->dumper->start($this->databaseType, $description);
foreach ($schemaDiff->getCreatedAndUpdatedTables() as $diff) {
if ($diff instanceof Diffs\CreatedTable) {
$this->log(" - created table {$diff->getTableName()}");
$this->dumper->createTable($diff);
} elseif ($diff instanceof Diffs\UpdatedTable) {
foreach ($diff->getCreatedColumns() as $column) {
$this->log(" - created column {$column->getTableName()}.{$column->getDefinition()->getName()}");
$this->dumper->createTableColumn($column);
}
foreach ($diff->getCreatedIndexes() as $index) {
$this->log(" - created index {$index->getTableName()}.{$index->getDefinition()->getName()}");
$this->dumper->createTableIndex($index);
}
foreach ($diff->getCreatedForeignKeys() as $foreignKey) {
$this->log(" - created foreign key {$foreignKey->getTableName()}.{$foreignKey->getDefinition()->getName()}");
$this->dumper->createForeignKey($foreignKey);
}
foreach ($diff->getAddedOptions() as $option) {
$this->log(" - added option {$option->getTableName()}.{$option->getOption()}");
$this->dumper->addTableOption($option);
}
foreach ($diff->getUpdatedColumns() as $column) {
$this->log(" - updated column {$column->getTableName()}.{$column->getDefinition()->getName()}");
$this->dumper->updateTableColumn($column);
}
foreach ($diff->getUpdatedIndexes() as $index) {
$this->log(" - updated index {$index->getTableName()}.{$index->getDefinition()->getName()}");
$this->dumper->updateTableIndex($index);
}
foreach ($diff->getUpdatedForeignKeys() as $foreignKey) {
$this->log(" - updated foreign key {$foreignKey->getTableName()}.{$foreignKey->getDefinition()->getName()}");
$this->dumper->updateForeignKey($foreignKey);
}
foreach ($diff->getUpdatedOptions() as $option) {
$this->log(" - updated option {$option->getTableName()}.{$option->getOption()}");
$this->dumper->updateTableOption($option);
}
foreach ($diff->getUpdatedComments() as $comment) {
$this->log(" - updated comment for {$comment->getTableName()}");
$this->dumper->updateTableComment($comment);
}
foreach ($diff->getRemovedForeignKeys() as $foreignKey) {
$this->log(" - REMOVED foreign key {$foreignKey->getTableName()}.{$foreignKey->getForeignKeyName()}");
$this->dumper->removeForeignKey($foreignKey);
}
foreach ($diff->getRemovedIndexes() as $index) {
$this->log(" - REMOVED index {$index->getTableName()}.{$index->getIndexName()}");
$this->dumper->removeTableIndex($index);
}
foreach ($diff->getRemovedColumns() as $column) {
$this->log(" - REMOVED column {$column->getTableName()}.{$column->getColumnName()}");
$this->dumper->removeTableColumn($column);
}
foreach ($diff->getRemovedOptions() as $option) {
$this->log(" - REMOVED option {$option->getTableName()}.{$option->getOption()}");
$this->dumper->removeTableOption($option);
}
} else {
throw new UnsupportedException('Diff ' . get_class($diff) . ' is not supported.');
}
}
foreach ($schemaDiff->getRemovedTables() as $removedTable) {
$this->log(" - REMOVED table {$removedTable->getTableName()}");
$this->dumper->removeTable($removedTable);
}
$this->dumper->end();
if (!$this->testMode) {
$this->log('Saving schema');
$this->adapter->save($configNew);
}
$this->log('Done.');
}
private function prepareDefaults($databaseType)
{
if ($databaseType === Database::MYSQL) {
$this->options = array(
'ENGINE' => 'InnoDB',
'CHARACTER SET' => 'utf8mb4',
'COLLATE' => 'utf8mb4_czech_ci',
);
$this->setCustomType('bcrypt', 'CHAR', array(60));
$this->setCustomType('md5', 'CHAR', array(32));
$this->setCustomType('money', 'DECIMAL', array(15, 4));
}
}
private function log($msg)
{
if (isset($this->logger)) {
$this->logger->log($msg);
}
}
}