package com.student.service;

import com.student.bean.Clazz;
import com.student.bean.Department;
import com.student.bean.Major;
import com.student.dao.OrgDao;
import com.student.dao.impl.OrgDaoImpl;

import java.util.List;

public class OrgService {

    private final OrgDao orgDao;

    public OrgService() {
        this(new OrgDaoImpl());
    }

    OrgService(OrgDao orgDao) {
        this.orgDao = orgDao;
    }

    public List<Department> listDepts() {
        return orgDao.findAllDepts();
    }

    public Department findDept(int id) {
        return orgDao.findDeptById(id);
    }

    public boolean addDept(Department dept) {
        return orgDao.insertDept(dept);
    }

    public boolean updateDept(Department dept) {
        return orgDao.updateDept(dept);
    }

    public boolean deleteDept(int id) {
        return orgDao.deleteDept(id);
    }

    public List<Major> listMajorsByDept(int deptId) {
        return orgDao.findMajorsByDept(deptId);
    }

    public List<Major> listAllMajors() {
        return orgDao.findAllMajors();
    }

    public Major findMajor(int id) {
        return orgDao.findMajorById(id);
    }

    public boolean addMajor(Major major) {
        return orgDao.insertMajor(major);
    }

    public boolean updateMajor(Major major) {
        return orgDao.updateMajor(major);
    }

    public boolean deleteMajor(int id) {
        return orgDao.deleteMajor(id);
    }

    public List<Clazz> listClazzByMajor(int majorId) {
        return orgDao.findClazzByMajor(majorId);
    }

    public List<Clazz> listAllClazz() {
        return orgDao.findAllClazz();
    }

    public Clazz findClazz(int id) {
        return orgDao.findClazzById(id);
    }

    public boolean addClazz(Clazz clazz) {
        return orgDao.insertClazz(clazz);
    }

    public boolean updateClazz(Clazz clazz) {
        return orgDao.updateClazz(clazz);
    }

    public boolean deleteClazz(int id) {
        return orgDao.deleteClazz(id);
    }
}