package ciai.service;

import java.util.Set;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import ciai.exception.EvaluationNotEditedException;
import ciai.exception.EvaluationNotFoundException;
import ciai.exception.EvaluationNotRemovedFromEdition;
import ciai.model.Edition;
import ciai.model.Evaluation;
import ciai.repository.EditionRepository;
import ciai.repository.EvaluationRepository;
import ciai.repository.StudentEvaluationRepository;

@Service
public class EvaluationService {

	@Autowired
	EvaluationRepository evalRep;
	@Autowired
	EditionRepository editionRep;
	@Autowired
	StudentEvaluationRepository studentevalRep;

	Evaluation getEvaluation(Long id) throws EvaluationNotFoundException {

		Evaluation eval = evalRep.findOne(id);

		if (eval == null)
			throw new EvaluationNotFoundException();

		return eval;
	}

	public void editEvaluation(Edition edition, Evaluation eval, String name, String date, String time, float weight, int type)
			throws EvaluationNotFoundException, EvaluationNotEditedException {

		if (!edition.getEvaluations().contains(eval))
			throw new EvaluationNotFoundException();

		eval.setName(name);
		eval.setDate(date);
		eval.setTime(time);
		eval.setWeight(weight);
		eval.setType(type);

		if (evalRep.save(eval) == null)
			throw new EvaluationNotEditedException();
	}

	public void removeEvaluationFromEdition(Edition edition, Evaluation eval) throws EvaluationNotRemovedFromEdition {

		Set<Evaluation> evals = edition.getEvaluations();
		if (!evals.contains(eval))
			throw new EvaluationNotRemovedFromEdition();

		// apaga a avaliação das avaliações de cada estudante
		// (student_evaluation)
		studentevalRep.delete(studentevalRep.getStudentsByEvaluation(eval.getId()));

		// apaga a avaliação da tabela da edição
		evals.remove(eval);
		editionRep.save(edition);

		// apaga a avaliação da tabela de avaliaçõs
		evalRep.delete(eval);

	}

	public Set<Evaluation> getEditionEvaluations(Long id) {
		return evalRep.editionEvaluationsByType(id);
	}

}