<?php

  namespace OCA\GroupfolderFilesystemSnapshots\Migration;

  use Closure;
  use OCP\DB\ISchemaWrapper;
  use OCP\Migration\SimpleMigrationStep;
  use OCP\Migration\IOutput;

  class Version100Date20230822153000 extends SimpleMigrationStep {

	const TASKS_TABLE = "groupfolder_snapshots_tasks";
	const RESULTS_TABLE = "groupfolder_snapshots_task_results";

	/**
	* @param IOutput $output
	* @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
	* @param array $options
	* @return null|ISchemaWrapper
	*/
	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
		/** @var ISchemaWrapper $schema */
		$schema = $schemaClosure();

		if (!$schema->hasTable(self::TASKS_TABLE)) {
			$table = $schema->createTable(self::TASKS_TABLE);
			$table->addColumn('id', 'integer', [
				'autoincrement' => true,
				'notnull' => true,
			]);
			$table->addColumn('user_id', 'string', [
				'notnull' => true,
				'length' => 200,
			]);
			$table->addColumn('groupfolder_id', 'bigint', [
				'notnull' => true,
			]);
			$table->addColumn('relative_path', 'string', [
				'notnull' => true,
			]);
			$table->addColumn('snapshot_id', 'string', [
				'notnull' => true,
			]);
			
			$table->addColumn('timestamp', 'integer', [
				'notnull' => true,
				'default' => 0,
			]);

			$table->setPrimaryKey(['id']);
			$table->addIndex(['user_id'], 'userid_index');
			$table->addIndex(['groupfolder_id'], 'groupfolderid_index');
		}

		if (!$schema->hasTable(self::RESULTS_TABLE)) {
			$table = $schema->createTable(self::RESULTS_TABLE);
			$table->addColumn('id', 'integer', [
				'autoincrement' => true,
				'notnull' => true,
			]);
			$table->addColumn('task_id', 'integer', [
				'notnull' => true,
			]);

			$table->addColumn('type', 'string', [
				'notnull' => true,
			]);

			// Before
			$table->addColumn('before_file_exists', 'boolean', [
				'notnull' => true,
			]);
			$table->addColumn('before_path', 'string', [
				'notnull' => false,
				'default' => '',
				'length' => 200,
			]);
			$table->addColumn('before_size', 'integer', [
				'notnull' => false,
				'default' => 0
			]);
			
			// Current
			$table->addColumn('current_file_exists', 'boolean', [
				'notnull' => false,
			]);
			$table->addColumn('current_path', 'string', [
				'notnull' => false,
				'default' => '',
				'length' => 200,
			]);
			$table->addColumn('current_size', 'integer', [
				'notnull' => false,
				'default' => 0
			]);

			$table->setPrimaryKey(['id']);
			$table->addIndex(['task_id'], 'taskid_index');
			$table->addForeignKeyConstraint($schema->getTable(self::TASKS_TABLE), ['task_id'], ['id'], ['onDelete' => 'CASCADE'], 'results_taskid_fk');
		}

		return $schema;
	}
}