package eu.eudat.model.builder.tenantconfiguration;

import eu.eudat.authorization.AuthorizationFlags;
import eu.eudat.commons.types.tenantconfiguration.LogoTenantConfigurationEntity;
import eu.eudat.convention.ConventionService;
import eu.eudat.model.StorageFile;
import eu.eudat.model.builder.BaseBuilder;
import eu.eudat.model.builder.StorageFileBuilder;
import eu.eudat.model.tenantconfiguration.LogoTenantConfiguration;
import eu.eudat.query.StorageFileQuery;
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.BaseFieldSet;
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.*;
import java.util.stream.Collectors;

@Component
@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public class LogoTenantConfigurationBuilder extends BaseBuilder<LogoTenantConfiguration, LogoTenantConfigurationEntity> {
    private EnumSet<AuthorizationFlags> authorize = EnumSet.of(AuthorizationFlags.None);

    private final BuilderFactory builderFactory;
    private final QueryFactory queryFactory;

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

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

    @Override
    public List<LogoTenantConfiguration> build(FieldSet fields, List<LogoTenantConfigurationEntity> 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 storageFileFields = fields.extractPrefixed(this.asPrefix(LogoTenantConfiguration._storageFile));
        Map<UUID, StorageFile> storageFileItemsMap = this.collectStorageFiles(storageFileFields, data);


        List<LogoTenantConfiguration> models = new ArrayList<>();
        for (LogoTenantConfigurationEntity d : data) {
            LogoTenantConfiguration m = new LogoTenantConfiguration();
            if (!storageFileFields.isEmpty() && storageFileItemsMap != null && storageFileItemsMap.containsKey(d.getStorageFileId()))  m.setStorageFile(storageFileItemsMap.get(d.getStorageFileId()));

            models.add(m);
        }
        this.logger.debug("build {} items", Optional.of(models).map(List::size).orElse(0));
        return models;
    }
    private Map<UUID, StorageFile> collectStorageFiles(FieldSet fields, List<LogoTenantConfigurationEntity> data) throws MyApplicationException {
        if (fields.isEmpty() || data.isEmpty())
            return null;
        this.logger.debug("checking related - {}", StorageFile.class.getSimpleName());

        Map<UUID, StorageFile> itemMap;
        if (!fields.hasOtherField(this.asIndexer(StorageFile._id))) {
            itemMap = this.asEmpty(
                    data.stream().map(LogoTenantConfigurationEntity::getStorageFileId).distinct().collect(Collectors.toList()),
                    x -> {
                        StorageFile item = new StorageFile();
                        item.setId(x);
                        return item;
                    },
                    StorageFile::getId);
        } else {
            FieldSet clone = new BaseFieldSet(fields.getFields()).ensure(StorageFile._id);
            StorageFileQuery q = this.queryFactory.query(StorageFileQuery.class).authorize(this.authorize).ids(data.stream().map(LogoTenantConfigurationEntity::getStorageFileId).distinct().collect(Collectors.toList()));
            itemMap = this.builderFactory.builder(StorageFileBuilder.class).authorize(this.authorize).asForeignKey(q, clone, StorageFile::getId);
        }
        if (!fields.hasField(StorageFile._id)) {
            itemMap.forEach((id, item) -> {
                if (item != null)
                    item.setId(null);
            });
        }

        return itemMap;
    }
    
}