FieldInfo::getFieldMap

protected function getFieldMap(array $entityTypeIds = [], array $countryIds = []): array
{
	static $map = null;
	static $usedCountries = [];

	$result = [];

	if ($map === null)
	{
		// Statndard fields
		$map = [
			CCrmOwnerType::Lead => [
				'TITLE',
				'ADDRESS',
				'SOURCE_DESCRIPTION',
				'STATUS_DESCRIPTION',
				'COMMENTS',
			],
			CCrmOwnerType::Company => [
				'TITLE',
				'ADDRESS',
				'COMMENTS',
			],
			CCrmOwnerType::Contact => [
				'FULL_NAME',
				'ADDRESS',
				'SOURCE_DESCRIPTION',
				'COMMENTS',
			],
		];

		// User fields
		foreach (array_keys($map) as $entityTypeId)
		{
			/** @noinspection PhpUndefinedMethodInspection */
			$userFieldsInfo = $this->getClassByEntityType($entityTypeId)::GetUserFields();
			foreach ($userFieldsInfo as $fieldName => $fieldInfo)
			{
				if (
					isset($fieldInfo['USER_TYPE_ID'])
					&& (
						$fieldInfo['USER_TYPE_ID'] === 'string'
						|| $fieldInfo['USER_TYPE_ID'] === 'integer'
						|| $fieldInfo['USER_TYPE_ID'] === 'double'
						|| $fieldInfo['USER_TYPE_ID'] === 'address'
					)
				)
				{
					$map[$entityTypeId][] = $fieldName;
				}
			}
		}

		// Multifields
		$fm = array_fill_keys(array_keys(CCrmFieldMulti::GetEntityTypes()), true);
		unset($fm['PHONE'], $fm['EMAIL'], $fm['LINK']);
		$fm = array_keys($fm);
		foreach (array_keys($map) as $entityTypeId)
		{
			foreach($fm as $fmType)
			{
				$map[$entityTypeId][] = "FM.$fmType";
			}
		}

		// Requisites and bank details
		$requisite = EntityRequisite::getSingleInstance();
		$usedCountries = $this->prepareCountries($this->sortCountries($requisite->getUsedCountries()));
		if (!empty($usedCountries))
		{
			$rqFieldCountryMap = [];
			foreach ($requisite->getRqFieldsCountryMap() as $fieldName => $countries)
			{
				$rqFieldCountryMap[$fieldName] = array_fill_keys($countries, true);
			}
			$userFieldsMap = array_fill_keys($requisite->getUserFields(), true);
			$preset = EntityPreset::getSingleInstance();
			$fieldsInPresetsByCountry = $preset->getSettingsFieldsOfPresets(
				CCrmOwnerType::Requisite,
				'active',
				['ARRANGE_BY_COUNTRY' => true]
			);
			$bankDetail = EntityBankDetail::getSingleInstance();
			$bdFieldsByCountry = $bankDetail->getRqFieldByCountry();
			foreach (array_keys($map) as $entityTypeId)
			{
				if ($entityTypeId !== CCrmOwnerType::Lead)
				{
					foreach ($usedCountries as $countryId)
					{
						$rqFieldsInfo = $requisite->getFormFieldsInfo($countryId);
						$countryCode = EntityPreset::getCountryCodeById($countryId);
						$map[$entityTypeId][] = "RQ.$countryCode.NAME";
						foreach ($fieldsInPresetsByCountry[$countryId] as $fieldName)
						{
							if (
								isset($rqFieldsInfo[$fieldName])
								&& isset($rqFieldsInfo[$fieldName]['type'])
								&& (
									$rqFieldsInfo[$fieldName]['type'] === 'string'
									|| $rqFieldsInfo[$fieldName]['type'] === 'integer'
								)
								&& (
									isset($rqFieldCountryMap[$fieldName][$countryId])
									|| isset($userFieldsMap[$fieldName])
								)
							)
							{
								$map[$entityTypeId][] = "RQ.$countryCode.$fieldName";
							}
						}
						$map[$entityTypeId][] = "RQ.$countryCode.BD.NAME";
						if (isset($bdFieldsByCountry[$countryId]))
						{
							$bdFieldsInfo = $bankDetail->getFormFieldsInfo($countryId);
							foreach ($bdFieldsByCountry[$countryId] as $fieldName)
							{
								if (
									isset($bdFieldsInfo[$fieldName])
									&& isset($bdFieldsInfo[$fieldName]['type'])
									&& (
										$bdFieldsInfo[$fieldName]['type'] === 'string'
										|| $bdFieldsInfo[$fieldName]['type'] === 'integer'
									)
								)
								{
									$map[$entityTypeId][] = "RQ.$countryCode.BD.$fieldName";
								}
							}
						}
						$map[$entityTypeId][] = "RQ.$countryCode.BD.COMMENTS";
					}
				}
			}
		}
	}

	if (empty($entityTypeIds))
	{
		$entityTypeIds = array_keys($map);
	}

	if (empty($countryIds))
	{
		$countryIds = $usedCountries;
	}
	$countryCodeMap = [];
	foreach (array_intersect($countryIds, $usedCountries) as $countryId)
	{
		$countryCodeMap[EntityPreset::getCountryCodeById($countryId)] = true;
	}

	$prefixLength =
		mb_strlen(static::RQ_FIELD_PREFIX)
		+ mb_strlen(EntityPreset::getCountryCodeById(1))
		+ mb_strlen(static::PATH_SEPARATOR) * 2
	;

	foreach ($entityTypeIds as $entityTypeId)
	{
		if (isset($map[$entityTypeId]))
		{
			foreach ($map[$entityTypeId] as $fieldPathName)
			{
				if (
					mb_strlen($fieldPathName) > $prefixLength
					&& mb_substr($fieldPathName, 0, 3) === (static::RQ_FIELD_PREFIX . static::PATH_SEPARATOR)
					&& mb_substr($fieldPathName, 5, 1) === static::PATH_SEPARATOR
				)
				{
					if (isset($countryCodeMap[mb_substr($fieldPathName, 3, 2)]))
					{
						$result[$entityTypeId][] = $fieldPathName;
					}
				}
				else
				{
					$result[$entityTypeId][] = $fieldPathName;
				}
			}
		}
	}

	return $result;
}