<?php

namespace TPsoft\DBmodel;

class Creator {

	private DBmodel $dbh;
	private string $rootDir = '';

	public function __construct(?DBmodel $dbh = null) {
		if (is_null($dbh)) {
			if (!is_null(DBmodel::$instance)) {
				$this->dbh = DBmodel::$instance;
			} else {
				throw new \Exception('DB handler is null');
			}
		} else {
			$this->dbh = $dbh;
		}
	}

	public function interact() {
		$name = $this->readline('New model name: ');
		$table = $this->readline('Table name: ');
		$entity = $this->readline('Entity name: ');
		if (strlen($entity) <= 0) {
			$entity = $table;
		}
		$model_filepath = $this->rootDir().'/models/'.$name.'.php';
		if ($this->readline("Create MODEL class '$model_filepath'? (y - yes, other - no) ") != 'y') {
			echo "Creating of MODEL class is skipped\n";
			return false;
		}
		$model_dirpath = dirname($model_filepath);
		if (!file_exists($model_dirpath)) {
			if ($this->readline("Create directory '$model_dirpath'? (y - yes, other - no) ") != 'y') {
				echo "Creating of MODEL class is skipped\n";
				return false;
			}
			mkdir($model_dirpath);
		}
		echo "Creating MODEL class ... ";
		if (file_exists($model_filepath)) {
			if ($this->readline("File '$model_filepath' exists. Do you want to replace? (y - yes, other - no) ") != 'y') {
				echo "Creating of MODEL class is skipped\n";
				return false;
			}
		}
		$table_columns = $this->dbh->getTableColumns($table);
		$suc = $this->modelSave($model_filepath, $name, $table, $entity, $table_columns['pks'], $table_columns['columns'], $table_columns['types']);
		echo $suc ? "MODEL class created" : 'Error: MODEL class not created';
	}

	private function modelSave($filepath, $name, $tablename, $entity, $pks, $columns, $types) {
		if (is_array($pks) && count($pks) > 1) {
			$primary_key_name = "array('".implode("', '", $pks)."')";
			$columns = array_merge($pks, $columns);
		} else {
			if (is_array($pks)) {
				$primary_key_name = "'".$pks[0]."'";
			} else {
				$primary_key_name = "'$pks'";
			}
		}
		$allowed_attributes = array();
		foreach ($columns as $column) {
			$allowed_attributes[] = sprintf("'%s' => '%s'", $column, str_replace("'", '"', $types[$column]));
		}
		if (substr($entity, -3) == 'ies') {
			$entity_one = substr($entity, 0, -3).'y';
		} else if (substr($entity, -2) == 'es') {
			$entity_one = substr($entity, 0, -2);
		} else if (substr($entity, -1) == 's') {
			$entity_one = substr($entity, 0, -1);
		} else {
			$entity_one = $entity;
		}
		$auto_created_dt = in_array('created_dt', $columns)
			? '
		if (is_null($primary_key)
			&& !isset($data[\'created_dt\']))
		{
			$data[\'created_dt\'] = date(\'Y-m-d H:i:s\');
		}'
			: '';
		$auto_changed_dt = in_array('changed_dt', $columns)
			? '
		if (!is_null($primary_key)
			&& is_array($data)
			&& count($data) > 0
			&& !isset($data[\'changed_dt\']))
		{
			$data[\'changed_dt\'] = date(\'Y-m-d H:i:s\');
		}'
			: '';
		$content = '<?'."php
/*
	TPsoft.org 2000-".date('Y')."
	file for controlers/*.php

	Milestones:
	".date('Y-m-d H:i')."  Created
*/

class ".$name." extends \TPsoft\DBmodel\DBmodel {

	public $"."tables = array(
		'".$entity."' => array(
			'name'             => '".$tablename."',
			'primary_key_name' => ".$primary_key_name.",
			'allow_attributes' => array(
				".implode(",\n\t\t\t\t", $allowed_attributes)."
			)
		),
	);

	public function exist($"."primary_key = null) {
		return $"."this->existRecord('".$entity."', $"."primary_key);
	}

	public function ".$entity_one."($"."primary_key = null, $"."data = array()) {".$auto_created_dt.$auto_changed_dt."
		return $"."this->record('".$entity."', $"."primary_key, $"."data);
	}

	public function ".$entity_one."By($"."colname, $"."colvalue) {
		return $"."this->recordBy('".$entity."', $"."colname, $"."colvalue);
	}

	public function ".$entity_one."Save($"."data = array()) {
		return $"."this->".$entity_one."($"."this->exist($"."data) ? $"."data : null, $"."data);
	}

	public function ".$entity_one."Empty() {
		return $"."this->recordEmpty('".$entity."');
	}

	public function ".$entity_one."Attributes() {
		return $"."this->typesAttributes('".$entity."');
	}

	public function ".$entity_one."Count() {
		return $"."this->count('".$entity."');
	}

	public function getList($"."search = array(), $"."reverse = false, $"."concat_or = false) {
		return $"."this->search('".$entity."')
			->where($"."search, $"."concat_or)
			->order(array(".$primary_key_name." => $"."reverse ? 'DESC' : 'ASC'))
			->toArray();
	}

	public function ".$entity_one."Combo($"."col_key, $"."col_value, $"."add_empty = false) {
		return $"."this->search('".$entity."')
			->toCombo($"."col_key, $"."col_value, $"."add_empty);
	}

}

?".">
";
		return file_put_contents($filepath, $content);
	}

	/* ----------------------------------------------------
	 * HELPDER METHODS
	 */
	public function readline($question, $default = null) {
		ob_flush();
		$line = readline($question);
		if (!is_null($default)
			&& strlen($line) <= 0)
		{
			return $default;
		}
		return $line;
	}

	public function rootDir(?string $dir = null) {
		if (!is_null($dir)) {
			$this->rootDir = $dir;
		}
		if (strlen($this->rootDir) > 0) return $this->rootDir;
		return dirname(dirname(__FILE__));
	}

}

?>