<?php

namespace SilverStripe\ORM\FieldType;

use NumericField;
use SilverStripe\ORM\DB;

/**
 * Represents a floating point field.
 *
 * @package framework
 * @subpackage orm
 */
class DBFloat extends DBField {

	public function __construct($name = null, $defaultVal = 0) {
		$this->defaultVal = is_float($defaultVal) ? $defaultVal : (float) 0;

		parent::__construct($name);
	}

	public function requireField() {
		$parts = Array(
			'datatype'=>'float',
			'null'=>'not null',
			'default'=>$this->defaultVal,
			'arrayValue'=>$this->arrayValue
		);
		$values = Array('type'=>'float', 'parts'=>$parts);
		DB::require_field($this->tableName, $this->name, $values);
	}

	/**
	 * Returns the number, with commas and decimal places as appropriate, eg “1,000.00”.
	 *
	 * @uses number_format()
	 */
	public function Nice() {
		return number_format($this->value, 2);
	}

	public function Round($precision = 3) {
		return round($this->value, $precision);
	}

	public function NiceRound($precision = 3) {
		return number_format(round($this->value, $precision), $precision);
	}

	public function scaffoldFormField($title = null) {
		return new NumericField($this->name, $title);
	}

	public function nullValue() {
		return 0;
	}

	public function prepValueForDB($value) {
		if($value === true) {
			return 1;
		} elseif(empty($value) || !is_numeric($value)) {
			return 0;
		}

		return $value;
	}

}