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package cdm.event.common.validation;

import cdm.base.staticdata.identifier.AssignedIdentifier;
import cdm.base.staticdata.identifier.TradeIdentifierTypeEnum;
import cdm.base.staticdata.party.metafields.ReferenceWithMetaParty;
import cdm.event.common.TradeIdentifier;
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 com.rosetta.model.metafields.FieldWithMetaString;
import java.util.List;

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 TradeIdentifierValidator implements Validator {

	@Override
	public ValidationResult validate(RosettaPath path, TradeIdentifier o) {
		/* Casting is required to ensure types are output to ensure recompilation in Rosetta */
		String error = 
			Lists.newArrayList(
				checkCardinality("issuerReference", (ReferenceWithMetaParty) o.getIssuerReference() != null ? 1 : 0, 0, 1), 
				checkCardinality("issuer", (FieldWithMetaString) o.getIssuer() != null ? 1 : 0, 0, 1), 
				checkCardinality("assignedIdentifier", (List) o.getAssignedIdentifier() == null ? 0 : ((List) o.getAssignedIdentifier()).size(), 1, 0), 
				checkCardinality("identifierType", (TradeIdentifierTypeEnum) o.getIdentifierType() != null ? 1 : 0, 0, 1)
			).stream().filter(res -> !res.get()).map(res -> res.getError()).collect(joining("; "));
		
		if (!isNullOrEmpty(error)) {
			return failure("TradeIdentifier", ValidationType.CARDINALITY, "TradeIdentifier", path, "", error);
		}
		return success("TradeIdentifier", ValidationType.CARDINALITY, "TradeIdentifier", path, "");
	}

}