package eu.dnetlib.uoamonitorservice.service;

import eu.dnetlib.uoamonitorservice.dao.TopicDAO;
import eu.dnetlib.uoamonitorservice.dto.TopicFull;
import eu.dnetlib.uoamonitorservice.entities.Indicator;
import eu.dnetlib.uoamonitorservice.entities.Stakeholder;
import eu.dnetlib.uoamonitorservice.entities.Topic;
import eu.dnetlib.uoamonitorservice.generics.Common;
import eu.dnetlib.uoamonitorservice.handlers.EntityNotFoundException;
import eu.dnetlib.uoamonitorservice.handlers.PathNotValidException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.method.P;
import org.springframework.stereotype.Service;

import java.util.stream.Collectors;

@Service
public class TopicService {

    private final TopicDAO dao;

    private final CategoryService categoryService;
    private final CommonService commonService;

    @Autowired
    public TopicService(TopicDAO dao, CategoryService categoryService, CommonService commonService) {
        this.dao = dao;
        this.categoryService = categoryService;
        this.commonService = commonService;
    }

    public Topic findByPath(Stakeholder stakeholder, String topicId, String message) {
        if (!stakeholder.getTopics().contains(topicId)) {
            throw new PathNotValidException(message + ": Topic with id: " + topicId + " not found in Stakeholder: " + stakeholder.getId());
        }
        return this.dao.findById(topicId).orElseThrow(() -> new EntityNotFoundException(message + ": Topic with id: " + topicId + " not found"));
    }

    public TopicFull getFullTopic(String type, String alias, String id) {
        Topic topic = this.find(id);
        if(commonService.hasVisibilityAuthority(type, alias, topic)) {
           return  new TopicFull(topic, topic.getCategories().stream()
                   .map(categoryId -> this.categoryService.getFullCategory(type, alias, categoryId))
                   .collect(Collectors.toList()));
        } else {
            return null;
        }
    }

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