package eu.dnetlib.uoamonitorservice.service;

import eu.dnetlib.uoamonitorservice.dao.SectionDAO;
import eu.dnetlib.uoamonitorservice.dto.SectionFull;
import eu.dnetlib.uoamonitorservice.entities.Indicator;
import eu.dnetlib.uoamonitorservice.entities.Section;
import eu.dnetlib.uoamonitorservice.handlers.EntityNotFoundException;
import eu.dnetlib.uoamonitorservice.primitives.Visibility;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

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

@Service
public class SectionService {

    private final SectionDAO dao;

    private final IndicatorService indicatorService;

    @Autowired
    public SectionService(SectionDAO dao, IndicatorService indicatorService) {
        this.dao = dao;
        this.indicatorService = indicatorService;
    }

    public SectionFull buildSection(SectionFull sectionFull) {
        sectionFull.setIndicators(sectionFull.getIndicators().stream().map(indicator -> this.indicatorService.save(indicator)).collect(Collectors.toList()));
        Section section = dao.save(new Section(sectionFull));
        return new SectionFull(section, sectionFull.getIndicators());
    }

    public SectionFull changeVisibilityTree(String sectionId, Visibility visibility) {
        Section section = this.find(sectionId);
        SectionFull sectionFull = new SectionFull(section, section.getIndicators().stream().map(indicatorId -> this.indicatorService.find(indicatorId)).collect(Collectors.toList()));
        sectionFull.setIndicators(sectionFull.getIndicators().stream().map(indicator -> {
            indicator.setVisibility(visibility);
            return indicatorService.save(indicator);
        }).collect(Collectors.toList()));
        return sectionFull;
    }

    public SectionFull saveSection(SectionFull sectionFull) {
        Section section = new Section(sectionFull);
        if(section.getId() != null) {
            section.setIndicators(this.getIndicatorsId(section.getId()));
        }
        return sectionFull;
    }

    public Section find(String id) {
        return dao.findById(id).orElseThrow(() -> new EntityNotFoundException("Section with id: " + id + " not found"));
    }

    public SectionFull getFullSection(String type, String alias, String id) {
        Section section = this.find(id);
        return new SectionFull(section, section.getIndicators().stream()
                .map(indicatorId -> this.indicatorService.getIndicator(type, alias, indicatorId))
                .collect(Collectors.toList()));
    }

    public List<Indicator> getIndicators(String id) {
        Section section = this.find(id);
        return section.getIndicators().stream().map(this.indicatorService::find).collect(Collectors.toList());
    }

    public List<String> getIndicatorsId(String id) {
        return this.getIndicators(id).stream().map(Indicator::getId).collect(Collectors.toList());
    }
}