package eu.eudat.model.builder.externalfetcher;

import eu.eudat.authorization.AuthorizationFlags;
import eu.eudat.commons.types.externalfetcher.StaticEntity;
import eu.eudat.convention.ConventionService;
import eu.eudat.model.builder.BaseBuilder;
import eu.eudat.model.externalfetcher.Static;
import gr.cite.tools.data.builder.BuilderFactory;
import gr.cite.tools.data.query.QueryFactory;
import gr.cite.tools.exception.MyApplicationException;
import gr.cite.tools.fieldset.FieldSet;
import gr.cite.tools.logging.DataLogEntry;
import gr.cite.tools.logging.LoggerService;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

import java.util.*;

@Component
@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public class StaticBuilder extends BaseBuilder<Static, StaticEntity> {

    private final BuilderFactory builderFactory;
    private final QueryFactory queryFactory;
    private EnumSet<AuthorizationFlags> authorize = EnumSet.of(AuthorizationFlags.None);

    @Autowired
    public StaticBuilder(
            ConventionService conventionService, BuilderFactory builderFactory, QueryFactory queryFactory) {
        super(conventionService, new LoggerService(LoggerFactory.getLogger(QueryCaseConfigBuilder.class)));
        this.builderFactory = builderFactory;
        this.queryFactory = queryFactory;
    }

    public StaticBuilder authorize(EnumSet<AuthorizationFlags> values) {
        this.authorize = values;
        return this;
    }

    @Override
    public List<Static> build(FieldSet fields, List<StaticEntity> data) throws MyApplicationException {
        this.logger.debug("building for {} items requesting {} fields", Optional.ofNullable(data).map(List::size).orElse(0), Optional.ofNullable(fields).map(FieldSet::getFields).map(Set::size).orElse(0));
        this.logger.trace(new DataLogEntry("requested fields", fields));
        if (fields == null || data == null || fields.isEmpty())
            return new ArrayList<>();

        FieldSet optionsFields = fields.extractPrefixed(this.asPrefix(Static._options));

        List<Static> models = new ArrayList<>();
        for (StaticEntity d : data) {
            Static m = new Static();
            if (!optionsFields.isEmpty() && d.getOptions() != null) {
                m.setOptions(this.builderFactory.builder(StaticOptionBuilder.class).authorize(this.authorize).build(optionsFields, d.getOptions()));
            }

            models.add(m);
        }
        this.logger.debug("build {} items", Optional.of(models).map(List::size).orElse(0));
        return models;
    }

}