package eu.dnetlib.dhp.provision.scholix;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import eu.dnetlib.dhp.provision.RelatedItemInfo;
import eu.dnetlib.dhp.schema.oaf.Author;
import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
import eu.dnetlib.dhp.schema.scholexplorer.DLIDataset;
import eu.dnetlib.dhp.schema.scholexplorer.DLIPublication;
import eu.dnetlib.dhp.schema.scholexplorer.DLIUnknown;

import java.io.Serializable;
import java.util.List;
import java.util.stream.Collectors;

public class ScholixSummary implements Serializable {
    private String id;
    private List<TypedIdentifier> localIdentifier;
    private Typology typology;
    private List<String> title;
    private List<String> author;
    private List<String> date;
    private String description;
    private List<SchemeValue> subject;
    private List<String> publisher;
    private int relatedPublications;
    private int relatedDatasets;
    private int relatedUnknown;
    private List<CollectedFromType> datasources;


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public List<TypedIdentifier> getLocalIdentifier() {
        return localIdentifier;
    }

    public void setLocalIdentifier(List<TypedIdentifier> localIdentifier) {
        this.localIdentifier = localIdentifier;
    }

    public Typology getTypology() {
        return typology;
    }

    public void setTypology(Typology typology) {
        this.typology = typology;
    }

    public List<String> getTitle() {
        return title;
    }

    public void setTitle(List<String> title) {
        this.title = title;
    }

    public List<String> getAuthor() {
        return author;
    }

    public void setAuthor(List<String> author) {
        this.author = author;
    }

    public List<String> getDate() {
        return date;
    }

    public void setDate(List<String> date) {
        this.date = date;
    }

    @JsonProperty("abstract")
    public String getDescription() {
        return description;
    }

    @JsonProperty("abstract")
    public void setDescription(String description) {
        this.description = description;
    }

    public List<SchemeValue> getSubject() {
        return subject;
    }

    public void setSubject(List<SchemeValue> subject) {
        this.subject = subject;
    }

    public List<String> getPublisher() {
        return publisher;
    }

    public void setPublisher(List<String> publisher) {
        this.publisher = publisher;
    }

    public int getRelatedPublications() {
        return relatedPublications;
    }

    public void setRelatedPublications(int relatedPublications) {
        this.relatedPublications = relatedPublications;
    }

    public int getRelatedDatasets() {
        return relatedDatasets;
    }

    public void setRelatedDatasets(int relatedDatasets) {
        this.relatedDatasets = relatedDatasets;
    }

    public int getRelatedUnknown() {
        return relatedUnknown;
    }

    public void setRelatedUnknown(int relatedUnknown) {
        this.relatedUnknown = relatedUnknown;
    }

    public List<CollectedFromType> getDatasources() {
        return datasources;
    }

    public void setDatasources(List<CollectedFromType> datasources) {
        this.datasources = datasources;
    }


    public static String fromJsonOAF(final Typology oafType, final String oafJson, final String relEntityJson) {
        try {
            final ObjectMapper mapper = new ObjectMapper();
            mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

            RelatedItemInfo relatedItemInfo = mapper.readValue(relEntityJson, RelatedItemInfo.class);

            switch (oafType) {
                case dataset:
                    return mapper.writeValueAsString(summaryFromDataset(mapper.readValue(oafJson, DLIDataset.class), relatedItemInfo));
                case publication:
                    return mapper.writeValueAsString(summaryFromPublication(mapper.readValue(oafJson, DLIPublication.class), relatedItemInfo));
                case unknown:
                    return mapper.writeValueAsString(summaryFromUnknown(mapper.readValue(oafJson, DLIUnknown.class), relatedItemInfo));
            }


        } catch (Throwable e) {
            throw new RuntimeException(e);
        }

        return null;
    }


    private static ScholixSummary summaryFromDataset(final DLIDataset item, final RelatedItemInfo relatedItemInfo) {
        ScholixSummary summary = new ScholixSummary();
        summary.setId(item.getId());

        if (item.getPid() != null)
            summary.setLocalIdentifier(item.getPid().stream()
                    .map(p -> new TypedIdentifier(p.getValue(), p.getQualifier().getClassid()))
                    .collect(Collectors.toList())
            );

        summary.setTypology(Typology.dataset);
        if (item.getTitle() != null)
            summary.setTitle(item.getTitle().stream().map(StructuredProperty::getValue).collect(Collectors.toList()));

        if (item.getAuthor() != null) {
            summary.setAuthor(item.getAuthor().stream().map(Author::getFullname).collect(Collectors.toList()));
        }

        if (item.getRelevantdate() != null)
            summary.setDate(
                    item.getRelevantdate().stream()
                            .filter(d -> "date".equalsIgnoreCase(d.getQualifier().getClassname()))
                            .map(StructuredProperty::getValue)
                            .collect(Collectors.toList())
            );

        if (item.getDescription() != null && item.getDescription().size() > 0)
            summary.setDescription(item.getDescription().get(0).getValue());

        if (item.getSubject() != null) {
            summary.setSubject(item.getSubject().stream()
                    .map(s -> new SchemeValue(s.getQualifier().getClassid(), s.getValue()))
                    .collect(Collectors.toList())
            );
        }


        summary.setRelatedDatasets(relatedItemInfo.getRelatedDataset());
        summary.setRelatedPublications(relatedItemInfo.getRelatedPublication());
        summary.setRelatedUnknown(relatedItemInfo.getRelatedUnknown());

        if (item.getDlicollectedfrom() != null)
            summary.setDatasources(item.getDlicollectedfrom().stream()
                    .map(
                            c -> new CollectedFromType(c.getName(), c.getId(), c.getCompletionStatus())
                    ).collect(Collectors.toList()));


        return summary;
    }

    private static ScholixSummary summaryFromPublication(final DLIPublication item, final RelatedItemInfo relatedItemInfo)  {
        ScholixSummary summary = new ScholixSummary();
        summary.setId(item.getId());

        if (item.getPid() != null)
            summary.setLocalIdentifier(item.getPid().stream()
                    .map(p -> new TypedIdentifier(p.getValue(), p.getQualifier().getClassid()))
                    .collect(Collectors.toList())
            );

        summary.setTypology(Typology.dataset);
        if (item.getTitle() != null)
            summary.setTitle(item.getTitle().stream().map(StructuredProperty::getValue).collect(Collectors.toList()));

        if (item.getAuthor() != null) {
            summary.setAuthor(item.getAuthor().stream().map(Author::getFullname).collect(Collectors.toList()));
        }

        if (item.getRelevantdate() != null)
            summary.setDate(
                    item.getRelevantdate().stream()
                            .filter(d -> "date".equalsIgnoreCase(d.getQualifier().getClassname()))
                            .map(StructuredProperty::getValue)
                            .collect(Collectors.toList())
            );

        if (item.getDescription() != null && item.getDescription().size() > 0)
            summary.setDescription(item.getDescription().get(0).getValue());

        if (item.getSubject() != null) {
            summary.setSubject(item.getSubject().stream()
                    .map(s -> new SchemeValue(s.getQualifier().getClassid(), s.getValue()))
                    .collect(Collectors.toList())
            );
        }


        summary.setRelatedDatasets(relatedItemInfo.getRelatedDataset());
        summary.setRelatedPublications(relatedItemInfo.getRelatedPublication());
        summary.setRelatedUnknown(relatedItemInfo.getRelatedUnknown());

        if (item.getDlicollectedfrom() != null)
            summary.setDatasources(item.getDlicollectedfrom().stream()
                    .map(
                            c -> new CollectedFromType(c.getName(), c.getId(), c.getCompletionStatus())
                    ).collect(Collectors.toList()));


        return summary;
    }

    private static ScholixSummary summaryFromUnknown(final DLIUnknown item, final RelatedItemInfo relatedItemInfo)  {
        ScholixSummary summary = new ScholixSummary();
        summary.setId(item.getId());
        if (item.getPid() != null)
            summary.setLocalIdentifier(item.getPid().stream()
                    .map(p -> new TypedIdentifier(p.getValue(), p.getQualifier().getClassid()))
                    .collect(Collectors.toList())
            );

        summary.setRelatedDatasets(relatedItemInfo.getRelatedDataset());
        summary.setRelatedPublications(relatedItemInfo.getRelatedPublication());
        summary.setRelatedUnknown(relatedItemInfo.getRelatedUnknown());

        if (item.getDlicollectedfrom() != null)
            summary.setDatasources(item.getDlicollectedfrom().stream()
                    .map(
                            c -> new CollectedFromType(c.getName(), c.getId(), c.getCompletionStatus())
                    ).collect(Collectors.toList()));


        return summary;
    }
}