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<?php |
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namespace yentu\commands; |
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use clearice\io\Io; |
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use yentu\CodeWriter; |
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use yentu\exceptions\CommandException; |
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use yentu\factories\DatabaseManipulatorFactory; |
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use yentu\Migrations; |
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class Import extends Command implements Reversible |
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{ |
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private $db; |
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private $code; |
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private $hasSchema = false; |
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private $foreignKeys = array(); |
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private $newVersion; |
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private $manipulatorFactory; |
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private $migrations; |
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private $io; |
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public function __construct(Migrations $migrations, DatabaseManipulatorFactory $manipulatorFactory, Io $io, CodeWriter $codeWriter) |
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{ |
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$this->manipulatorFactory = $manipulatorFactory; |
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$this->migrations = $migrations; |
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$this->io = $io; |
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$this->code = $codeWriter; |
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} |
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public function run() |
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{ |
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$this->db = $this->manipulatorFactory->createManipulator(); |
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$files = scandir($this->migrations->getPath("migrations")); |
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if (count($files) > 2) { |
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throw new CommandException("Cannot run imports. Your migrations directory is not empty"); |
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} |
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$description = $this->db->getDescription(); |
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$this->code->add('begin()'); |
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if (isset($description['schemata'])) { |
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$this->importSchemata($description['schemata']); |
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} |
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if (isset($description['tables'])) { |
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$this->importTables($description['tables']); |
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} |
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if (isset($description['views'])) { |
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$this->importViews($description['views']); |
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} |
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$this->importForeignKeys(); |
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$this->code->add('->end();'); |
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$this->newVersion = date('YmdHis', time()); |
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$path = $this->migrations->getPath("migrations/{$this->newVersion}_import.php"); |
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file_put_contents($path, $this->code); |
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$this->io->output("Created `$path`\n"); |
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if (!$this->db->getAssertor()->doesTableExist('yentu_history')) { |
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$this->db->createHistory(); |
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} |
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$this->db->setVersion($this->newVersion); |
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$this->db->disconnect(); |
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return $description; |
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} |
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public function getNewVersion() |
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{ |
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return $this->newVersion; |
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} |
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private function generateSchemaCode($description, $ref = false, $prefix = '') |
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{ |
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$refprefix = $ref === true ? 'ref' : '->'; |
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if ($description["{$prefix}schema"] == false) { |
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return "{$refprefix}table('{$description["{$prefix}table"]}')"; |
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} else { |
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return "{$refprefix}schema('{$description["{$prefix}schema"]}')->table('{$description["{$prefix}table"]}')"; |
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} |
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} |
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protected function importForeignKeys() |
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{ |
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foreach ($this->foreignKeys as $name => $foreignKey) { |
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$this->code->add($this->generateSchemaCode($foreignKey)); |
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$this->code->addIndent(); |
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$this->code->add("->foreignKey('" . implode("','", $foreignKey['columns']) . "')"); |
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$reference = $this->generateSchemaCode($foreignKey, true, 'foreign_'); |
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$this->code->add("->references({$reference})"); |
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$this->code->add("->columns('" . implode("','", $foreignKey['foreign_columns']) . "')"); |
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if ($foreignKey['on_delete'] != '') { |
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$this->code->add("->onDelete('{$foreignKey['on_delete']}')"); |
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} |
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if ($foreignKey['on_update'] != '') { |
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$this->code->add("->onUpdate('{$foreignKey['on_update']}')"); |
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} |
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$this->code->add("->name('$name')"); |
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$this->code->decreaseIndent(); |
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$this->code->ln(); |
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} |
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} |
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protected function importColumns($columns) |
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{ |
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foreach ($columns as $column) { |
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$this->code->addNoLn("->column('{$column['name']}')"); |
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$this->code->addNoIndent("->type('{$column['type']}')"); |
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$this->code->addNoIndent("->nulls(" . ($column['nulls'] === true ? 'true' : 'false') . ")"); |
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if ($column['length'] != '') { |
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$this->code->addNoIndent("->length({$column['length']})"); |
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} |
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if ($column['default'] != '') { |
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$this->code->addNoIndent("->defaultValue(\"{$column['default']}\")"); |
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} |
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$this->code->ln(); |
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} |
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} |
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protected function importSchemata($schemata) |
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{ |
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$this->code->add('// Schemata'); |
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if (count($schemata) > 0) { |
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$this->hasSchema = true; |
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} |
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foreach ($schemata as $schema) { |
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$this->code->add("->schema('{$schema['name']}')"); |
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$this->code->addIndent(); |
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$this->importTables($schema['tables']); |
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$this->importViews($schema['views']); |
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$this->code->decreaseIndent(); |
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} |
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$this->hasSchema = false; |
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} |
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protected function importViews($views) |
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{ |
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foreach ($views as $view) { |
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$definition = sprintf('->definition("%s")', str_replace('"', '\"', $view['definition'])); |
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$this->code->add("->view('{$view['name']}')$definition"); |
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$this->code->ln(); |
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} |
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} |
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protected function importTables($tables) |
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{ |
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foreach ($tables as $table) { |
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if ($table['name'] == 'yentu_history') |
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continue; |
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$this->code->add("->table('{$table['name']}')"); |
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$this->code->addIndent(); |
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$this->importColumns($table['columns']); |
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$this->importConstraints('primaryKey', $table['primary_key']); |
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if ($table['auto_increment']) { |
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$this->code->add("->autoIncrement()"); |
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} |
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$this->importConstraints('unique', $table['unique_keys']); |
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$this->importConstraints('index', $table['indices']); |
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$this->code->decreaseIndent(); |
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$this->code->ln(); |
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if (count($table['foreign_keys']) > 0) { |
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$this->foreignKeys = array_merge($this->foreignKeys, $table['foreign_keys']); |
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} |
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} |
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} |
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protected function importConstraints($type, $constraints) |
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{ |
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foreach ($constraints as $name => $constraint) { |
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$constraint = implode("','", $constraint['columns']); |
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$this->code->add("->$type('$constraint')->name('$name')"); |
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} |
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} |
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public function reverseActions() |
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{ |
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} |
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} |
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Our type inference engine in quite powerful, but sometimes the code does not provide enough clues to go by. In these cases we request you to add a
@return
annotation as described here.