package eu.dnetlib.uoamonitorservice.service;

import eu.dnetlib.uoamonitorservice.dao.SubCategoryDAO;
import eu.dnetlib.uoamonitorservice.dto.SubCategoryFull;
import eu.dnetlib.uoamonitorservice.dto.TopicFull;
import eu.dnetlib.uoamonitorservice.entities.Category;
import eu.dnetlib.uoamonitorservice.entities.SubCategory;
import eu.dnetlib.uoamonitorservice.entities.Topic;
import eu.dnetlib.uoamonitorservice.handlers.EntityNotFoundException;
import eu.dnetlib.uoamonitorservice.handlers.PathNotValidException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.stream.Collectors;

@Service
public class SubCategoryService {

    private final SubCategoryDAO dao;

    private final CommonService commonService;
    private final SectionService sectionService;

    @Autowired
    public SubCategoryService( CommonService commonService, SubCategoryDAO dao, SectionService sectionService) {
        this.commonService = commonService;
        this.dao = dao;
        this.sectionService = sectionService;
    }

    public SubCategory findByPath(Category category, String subcategoryId, String message) {
        if (!category.getSubCategories().contains(subcategoryId)) {
            throw new PathNotValidException(message + ": SubCategory with id: " + subcategoryId + " not found in Category: " + category.getId());
        }
        return this.dao.findById(subcategoryId).orElseThrow(() -> new EntityNotFoundException(message + ": SubCategory with id: " + subcategoryId + " not found"));
    }

    public SubCategoryFull getFullSubCategory(String type, String alias, String subCategoryId) {
        SubCategory subCategory = this.find(subCategoryId);
        if(commonService.hasVisibilityAuthority(type, alias, subCategory)) {
            return  new SubCategoryFull(subCategory, subCategory.getNumbers().stream()
                    .map(sectionId -> this.sectionService.getFullSection(type, alias, sectionId))
                    .collect(Collectors.toList()),
                    subCategory.getCharts().stream()
                            .map(sectionId -> this.sectionService.getFullSection(type, alias, sectionId))
                            .collect(Collectors.toList()));
        } else {
            return null;
        }
    }

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