class.ilDclDatetimeRecordFieldModel.php

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<?php

declare(strict_types=1);

class ilDclDatetimeRecordFieldModel extends ilDclBaseRecordFieldModel
{
    public function parseValue($value): string
    {
        return (string) $value;
    }

    public function getValueFromExcel(ilExcel $excel, int $row, int $col): ?string
    {
        $value = parent::getValueFromExcel($excel, $row, $col);

        if ($value) {
            return date('Y-m-d', strtotime($value));
        } else {
            return "";
        }
    }

    public function parseExportValue($value): ?string
    {
        return (new ilDate($value, IL_CAL_DATE))->get(IL_CAL_DATE);
    }

    public function parseSortingValue($value, bool $link = true): ?int
    {
        return strtotime($value);
    }

    public function getFormulaValue(): string
    {
        // getValue returns the field value, but in this case it is formatted. For the calculations in Formelns the value is needed as Unix timestamp (as string).
        $value = $this->getValue();
        return (string) strtotime($value ? $value : '');
    }
}