package cryptosky.me.dbgateway.service;

import cryptosky.me.dbgateway.jpa.entity.Vehicle;
import cryptosky.me.dbgateway.jpa.repository.VehicleRepository;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDate;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

@Service
public class VehicleService {

    private final VehicleRepository vehicleRepository ;

    public VehicleService(final VehicleRepository vehicleRepository) {
        this.vehicleRepository = vehicleRepository ;
    }

    @Transactional
    public Vehicle createVehicle( final LocalDate timestamp, final Long av_price, final Long h_price, final Long l_price, final Long c_price, final Long volume ) {
        Vehicle vehicle = Vehicle.builder()
                .timestamp(timestamp)
                .average_price(av_price)
                .high_price(h_price)
                .low_price(l_price)
                .close_price(c_price)
                .volume(volume)
                .build();

        return this.vehicleRepository.save(vehicle);
    }

    @Transactional(readOnly = true)
    public List<Vehicle> getAllVehicles(final int count) {
        return this.vehicleRepository.findAll().stream().limit(count).collect(Collectors.toList());
    }

    @Transactional(readOnly = true)
    public Optional<Vehicle> getVehicle(final int id) {
        return this.vehicleRepository.findById(id);
    }
}