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package edu.stanford.protege.webprotege.viz;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonTypeName;
import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableList;
import edu.stanford.protege.webprotege.criteria.MultiMatchType;

import javax.annotation.Nonnull;
import java.util.List;

import static com.google.common.collect.ImmutableList.toImmutableList;

/**
 * Matthew Horridge
 * Stanford Center for Biomedical Informatics Research
 * 2019-12-05
 */
@AutoValue

@JsonTypeName("CompositeOf")
public abstract class CompositeEdgeCriteria implements EdgeCriteria {

    @JsonCreator
    @Nonnull
    public static CompositeEdgeCriteria get(@Nonnull @JsonProperty("criteria") List criteria,
                                            @Nonnull @JsonProperty("matchType") MultiMatchType multiMatchType) {
        return new AutoValue_CompositeEdgeCriteria(ImmutableList.copyOf(criteria), multiMatchType);
    }

    @Nonnull
    public static CompositeEdgeCriteria get(@Nonnull MultiMatchType multiMatchType,
                                            @Nonnull EdgeCriteria ... criteria) {
        return get(ImmutableList.copyOf(criteria), multiMatchType);
    }

    @Nonnull
    public static CompositeEdgeCriteria anyEdge() {
        return get(ImmutableList.of(AnyEdgeCriteria.get()), MultiMatchType.ANY);
    }

    @Nonnull
    public static CompositeEdgeCriteria noEdge() {
        return get(ImmutableList.of(NoEdgeCriteria.get()), MultiMatchType.ANY);
    }
    
    @Override
    public  R accept(@Nonnull EdgeCriteriaVisitor visitor) {
        return visitor.visit(this);
    }

    @Nonnull
    public abstract ImmutableList getCriteria();

    @Nonnull
    public abstract MultiMatchType getMatchType();

    @Nonnull
    @Override
    public EdgeCriteria simplify() {
        ImmutableList simplified = getCriteria().stream()
                                                         .map(EdgeCriteria::simplify)
                                                         // Remove vacuously true criteria
                                                         .filter(c -> !(c instanceof AnyEdgeCriteria))
                                                         .collect(toImmutableList());
        if(simplified.size() == 0) {
            return AnyEdgeCriteria.get();
        }
        else if(simplified.size() == 1) {
            return simplified.get(0);
        }
        else {
            return CompositeEdgeCriteria.get(simplified, getMatchType());
        }
    }
}