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package cdm.event.common.validation;

import cdm.event.common.CreditEvent;
import cdm.event.common.CreditEventTypeEnum;
import cdm.observable.asset.Price;
import cdm.product.asset.ReferenceInformation;
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.records.Date;
import com.rosetta.model.lib.validation.ValidationResult;
import com.rosetta.model.lib.validation.ValidationResult.ValidationType;
import com.rosetta.model.lib.validation.Validator;
import java.math.BigDecimal;

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 CreditEventValidator implements Validator {

	@Override
	public ValidationResult validate(RosettaPath path, CreditEvent o) {
		/* Casting is required to ensure types are output to ensure recompilation in Rosetta */
		String error = 
			Lists.newArrayList(
				checkCardinality("creditEventType", (CreditEventTypeEnum) o.getCreditEventType() != null ? 1 : 0, 1, 1), 
				checkCardinality("eventDeterminationDate", (Date) o.getEventDeterminationDate() != null ? 1 : 0, 1, 1), 
				checkCardinality("auctionDate", (Date) o.getAuctionDate() != null ? 1 : 0, 0, 1), 
				checkCardinality("finalPrice", (Price) o.getFinalPrice() != null ? 1 : 0, 0, 1), 
				checkCardinality("recoveryPercent", (BigDecimal) o.getRecoveryPercent() != null ? 1 : 0, 0, 1), 
				checkCardinality("referenceInformation", (ReferenceInformation) o.getReferenceInformation() != null ? 1 : 0, 1, 1)
			).stream().filter(res -> !res.get()).map(res -> res.getError()).collect(joining("; "));
		
		if (!isNullOrEmpty(error)) {
			return failure("CreditEvent", ValidationType.CARDINALITY, "CreditEvent", path, "", error);
		}
		return success("CreditEvent", ValidationType.CARDINALITY, "CreditEvent", path, "");
	}

}