1:   2:   3:   4:   5:   6:   7:   8:   9:  10:  11:  12:  13:  14:  15:  16:  17:  18:  19:  20:  21:  22:  23:  24:  25:  26:  27:  28:  29:  30:  31:  32:  33:  34:  35:  36:  37:  38:  39:  40:  41:  42:  43:  44:  45:  46:  47:  48:  49:  50:  51:  52:  53:  54:  55:  56:  57:  58:  59:  60:  61:  62:  63:  64:  65:  66:  67:  68:  69:  70:  71:  72:  73:  74:  75:  76:  77:  78:  79:  80:  81:  82:  83:  84:  85:  86:  87:  88:  89:  90:  91:  92:  93:  94:  95:  96:  97:  98:  99: 100: 101: 102: 103: 104: 105: 106: 107: 108: 109: 110: 111: 112: 113: 114: 115: 116: 117: 118: 

<?php

/**
 * MvcCore
 *
 * This source file is subject to the BSD 3 License
 * For the full copyright and license information, please view
 * the LICENSE.md file that are distributed with this source code.
 *
 * @copyright   Copyright (c) 2016 Tom Flidr (https://github.com/mvccore)
 * @license  https://mvccore.github.io/docs/mvccore/5.0.0/LICENCE.md
 */

namespace MvcCore\Ext\Models\Db\Model;

trait Parsers {

    /**
     * Try to convert raw database value into first type in target types.
     * @param mixed $rawValue
     * @param \string[] $typesString
     * @param array $formatArgs
     * @return mixed Converted result.
     */
    protected static function parseToTypes ($rawValue, $typesString, $formatArgs = []) {
        $targetTypeValue = NULL;
        $value = $rawValue;
        foreach ($typesString as $typeString) {
            if (substr($typeString, -2, 2) === '[]') {
                if (!is_array($value)) {
                    $value = trim(strval($rawValue));
                    $value = $value === '' ? [] : explode(',', $value);
                }
                $arrayItemTypeString = substr($typeString, 0, strlen($typeString) - 2);
                $targetTypeValue = [];
                $conversionResult = TRUE;
                foreach ($value as $key => $item) {
                    list(
                        $conversionResultLocal, $targetTypeValueLocal
                    ) = static::parseToType($item, $arrayItemTypeString, $formatArgs);
                    if ($conversionResultLocal) {
                        $targetTypeValue[$key] = $targetTypeValueLocal;
                    } else {
                        $conversionResult = FALSE;
                        break;
                    }
                }
            } else {
                list(
                    $conversionResult, $targetTypeValue
                ) = static::parseToType($rawValue, $typeString, $formatArgs);
            }
            if ($conversionResult) {
                $value = $targetTypeValue;
                break;
            }
        }
        return $value;
    }

    /**
     * Try to convert database value into target type.
     * @param mixed $rawValue
     * @param string $typeStr
     * @param array $formatArgs
     * @return array First item is conversion boolean success, second item is converted result.
     */
    protected static function parseToType ($rawValue, $typeStr, $formatArgs = []) {
        $conversionResult = FALSE;
        $typeStr = trim($typeStr, '\\');
        if ($typeStr == 'DateTime') {
            if (!($rawValue instanceof \DateTime)) {
                if ($formatArgs !== NULL && count($formatArgs) > 0) {
                    $dateTime = static::parseToDateTime($rawValue, $formatArgs);
                } else {
                    $dateTime = static::parseToDateTimeDefault($rawValue, '+Y-m-d H:i:s');
                }
                if ($dateTime instanceof \DateTime) {
                    $rawValue = $dateTime;
                    $conversionResult = TRUE;
                }
            }
        } else {
            // bool, int, float, string, array, object, null:
            if (settype($rawValue, $typeStr)) 
                $conversionResult = TRUE;
        }
        return [$conversionResult, $rawValue];
    }
    
    /**
     * Convert int, float or string value into \DateTime.
     * @param int|float|string|NULL $rawValue 
     * @param \string[] $formatArgs 
     * @return \DateTime|bool
     */
    protected static function parseToDateTime ($rawValue, $formatArgs) {
        $dateTimeFormat = $formatArgs[0];
        if (is_numeric($rawValue)) {
            $rawValueStr = str_replace(['+','-','.'], '', (string) $rawValue);
            $secData = mb_substr($rawValueStr, 0, 10);
            $dateTimeStr = date($dateTimeFormat, intval($secData));
            if (strlen($rawValueStr) > 10)
                $dateTimeStr .= '.' . mb_substr($rawValueStr, 10);
        } else {
            $dateTimeStr = (string) $rawValue;
        }
        if (isset($formatArgs[1])) {
            $timeZone = new \DateTimeZone((string) $formatArgs[1]);
            $dateTime = \date_create_from_format($dateTimeFormat, $dateTimeStr, $timeZone);
        } else {
            $dateTime = \date_create_from_format($dateTimeFormat, $dateTimeStr);
        }
        return $dateTime;
    }

}