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package cdm.product.asset.validation;

import cdm.base.staticdata.asset.common.Loan;
import cdm.base.staticdata.asset.common.Security;
import cdm.base.staticdata.party.LegalEntity;
import cdm.base.staticdata.party.metafields.ReferenceWithMetaLegalEntity;
import cdm.product.asset.ReferenceObligation;
import com.google.common.collect.Lists;
import com.rosetta.model.lib.expression.ComparisonResult;
import com.rosetta.model.lib.path.RosettaPath;
import com.rosetta.model.lib.validation.ValidationResult;
import com.rosetta.model.lib.validation.ValidationResult.ValidationType;
import com.rosetta.model.lib.validation.Validator;

import static com.google.common.base.Strings.isNullOrEmpty;
import static com.rosetta.model.lib.expression.ExpressionOperators.checkCardinality;
import static com.rosetta.model.lib.validation.ValidationResult.failure;
import static com.rosetta.model.lib.validation.ValidationResult.success;
import static java.util.stream.Collectors.joining;

public class ReferenceObligationValidator implements Validator {

	@Override
	public ValidationResult validate(RosettaPath path, ReferenceObligation o) {
		/* Casting is required to ensure types are output to ensure recompilation in Rosetta */
		String error = 
			Lists.newArrayList(
				checkCardinality("security", (Security) o.getSecurity() != null ? 1 : 0, 0, 1), 
				checkCardinality("loan", (Loan) o.getLoan() != null ? 1 : 0, 0, 1), 
				checkCardinality("primaryObligor", (LegalEntity) o.getPrimaryObligor() != null ? 1 : 0, 0, 1), 
				checkCardinality("primaryObligorReference", (ReferenceWithMetaLegalEntity) o.getPrimaryObligorReference() != null ? 1 : 0, 0, 1), 
				checkCardinality("guarantor", (LegalEntity) o.getGuarantor() != null ? 1 : 0, 0, 1), 
				checkCardinality("guarantorReference", (String) o.getGuarantorReference() != null ? 1 : 0, 0, 1), 
				checkCardinality("standardReferenceObligation", (Boolean) o.getStandardReferenceObligation() != null ? 1 : 0, 0, 1)
			).stream().filter(res -> !res.get()).map(res -> res.getError()).collect(joining("; "));
		
		if (!isNullOrEmpty(error)) {
			return failure("ReferenceObligation", ValidationType.CARDINALITY, "ReferenceObligation", path, "", error);
		}
		return success("ReferenceObligation", ValidationType.CARDINALITY, "ReferenceObligation", path, "");
	}

}