package eu.eudat.utilities.helpers;

import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;

import eu.eudat.models.admin.components.datasetprofile.FieldSet;
import eu.eudat.models.admin.components.datasetprofile.Section;
import eu.eudat.models.user.components.commons.Rule;

public class ModelBuilderCollector {

	
	/**
	 * @param sections
	 * @return
	 */
	public static List<Rule> collectRules(List<eu.eudat.entities.xmlmodels.datasetprofiledefinition.Section> sections){
		List<Rule> rules = new LinkedList();
		for(eu.eudat.entities.xmlmodels.datasetprofiledefinition.Section section: sections){
			if(!section.getSections().isEmpty()){
				rules.addAll(collectRules(section.getSections()));
			}
			rules.addAll(
					section.getFieldSets().stream()
					.map(fieldset->fieldset.getFields())
					.flatMap(List::stream)
					.map(field->getRulesFromField(field.getId(),field.getVisible()
					.getRules()))
					.flatMap(List::stream)
					.collect(Collectors.toList()));
		}
		
		return rules;
	}
	
	private static List<Rule> getRulesFromField(String id,List<eu.eudat.models.components.commons.Rule> rules){
		List<Rule> modelRules = new LinkedList();
		for(eu.eudat.models.components.commons.Rule rule : rules){
			Rule modelRule = new Rule().fromDefinitionRule(rule);
			modelRule.setSourceField(id);
			modelRules.add(modelRule);
		}
		return modelRules;
	}
	
}