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// Copyright 2022 Goldman Sachs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package org.finos.legend.engine.api.analytics;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.impl.list.mutable.FastList;
import org.finos.legend.engine.language.pure.compiler.toPureGraph.PureModel;
import org.finos.legend.engine.protocol.pure.v1.PureProtocolObjectMapperFactory;
import org.finos.legend.engine.protocol.pure.v1.model.packageableElement.PackageableElement;
import org.finos.legend.pure.generated.Root_meta_analytics_quality_model_ViolationInstance;
import org.finos.legend.pure.generated.core_analytics_quality_checksEngine;
import org.finos.legend.pure.runtime.java.compiled.execution.CompiledExecutionSupport;

import javax.ws.rs.core.Response;
import java.util.ArrayList;
import java.util.List;


public class DataspaceQualityAnalyticsHelper
{
    public static ObjectMapper getNewObjectMapper()
    {
        return PureProtocolObjectMapperFactory.getNewObjectMapper();
    }

    public static Response getResponse(PureModel pureModel, List allElements)
    {
        CompiledExecutionSupport es = pureModel.getExecutionSupport();

        FastList _elements = FastList.newList();
        allElements.forEach(elem -> _elements.add(pureModel.getContext().resolvePackageableElement(elem.getPath(), elem.sourceInformation)));
        RichIterable> result = core_analytics_quality_checksEngine.Root_meta_analytics_quality_model_domain_runQualityChecks_PackageableElement_MANY__ViolationInstance_MANY_(_elements, es);

        if (result.isEmpty())
        {
            return Response.ok().build();
        }
        ValidationResult validationResult = calculateValidationResult(result, allElements.size());
        return Response.ok().entity(validationResult).build();
    }

    private static ValidationResult calculateValidationResult(RichIterable> result, int elements)
    {
        List totalErrors = new ArrayList<>();
        for (Root_meta_analytics_quality_model_ViolationInstance violationInstance : result)
        {
            ValidationRuleResult validationRuleResult = new ValidationRuleResult(
                    violationInstance._detail()._isValid(),
                    violationInstance._source().toString(),
                    violationInstance._rule()._id(),
                    violationInstance._detail()._message(),
                    violationInstance._rule()._description());
            totalErrors.add(validationRuleResult);
        }
        int healthScore = ValidationResult.calculateHealthScore(result.size(), elements);
        return new ValidationResult(totalErrors, healthScore);
    }
}