package com.example.nto.service.impl;

import com.example.nto.controller.dto.EmployeeDto;
import com.example.nto.controller.dto.EmployeeRegisterDto;
import com.example.nto.entity.Employee;
import com.example.nto.exception.EmployeeAlreadyExistsException;
import com.example.nto.exception.EmployeeNotFoundException;
import com.example.nto.exception.PasswordNotCorrectException;
import com.example.nto.repository.EmployeeRepository;
import com.example.nto.service.EmployeeService;
import lombok.RequiredArgsConstructor;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@RequiredArgsConstructor
public class EmployeeServiceImpl implements EmployeeService {

    private final EmployeeRepository employeeRepository;
    private PasswordEncoder passwordEncoder;

    @Override
    @Transactional(readOnly = true)
    public EmployeeDto getByUsername(String username) {
        return employeeRepository.findByUsername(username).map(EmployeeDto::toDto)
                .orElseThrow(() -> new EmployeeNotFoundException("Employee with " + username + " code not found!"));
    }

    @Override
    @Transactional(readOnly = true)
    public void auth(String username) {
        if (employeeRepository.findByUsername(username).isEmpty()) {
            throw new EmployeeNotFoundException("Employee with " + username + " username not found!");
        }
    }

    @Override
    public void register(EmployeeRegisterDto employeeRegisterDto) {
        if (employeeRepository.findByUsername(employeeRegisterDto.getUsername()).isPresent()){
            throw new EmployeeAlreadyExistsException("Employee with " + employeeRegisterDto.getUsername() + " username already exist");
        };

        Employee employee = new Employee();

        if (passwordEncoder.encode(employee.getPassword()).length() < 8) {
            throw new PasswordNotCorrectException("The password is too short!!!");
        }

        employee.setName(employeeRegisterDto.getName());
        employee.setUsername(employeeRegisterDto.getUsername());
        employee.setPassword(passwordEncoder.encode(employeeRegisterDto.getPassword()));

        employeeRepository.save(employee);
    }

}