package test;

import static org.junit.Assert.*;

import java.text.ParseException;
import java.text.SimpleDateFormat;

import org.junit.Before;
import org.junit.Test;

import car.CarException;
import car.MyNewCar;
import car.MyNewCar.CarMaker;
import car.CarException.ErrorCode;
import car.TripException;

public class MyNewCarTest {

    @Test
    public void doesSaveCar() throws CarException {
        MyNewCar car = new MyNewCar("Volvo", 50.0);
        assertEquals(car.getCarMaker(), CarMaker.values()[4]);
        assertEquals(car.getCapacity(), 50.0, 1e-15);
        assertEquals(car.getTrips().size(), 0);
    }

    @Test
    public void doesUpdateCar() throws CarException {
        MyNewCar car = new MyNewCar("Volvo", 50.0);
        car.setMaker("Ford");
        car.setCapacity(30.0);
        assertEquals(car.getCarMaker(), CarMaker.values()[0]);
        assertEquals(car.getCapacity(), 30.0, 1e-15);
    }

    @Test
    public void doesNotSaveCarWithInvalidMaker() {
        try {
            MyNewCar car = new MyNewCar("Audi", 50.0);
        } catch (CarException e) {
            assertEquals(e.getErrorCode(), ErrorCode.INVALID_CAR_MAKER);
        }
    }

    @Test
    public void doesNotSaveCarWithInvalidCapacity() {
        try {
            MyNewCar car = new MyNewCar("Volvo", -10.0);
        } catch (CarException e) {
            assertEquals(e.getErrorCode(), ErrorCode.INVALID_TANK_CAPACITY);
        }
    }

    @Test
    public void doesTankCar() throws CarException {
        MyNewCar car = new MyNewCar("Volvo", 50.0);
        car.tankGas(20.0);
        assertEquals(car.getCurrentFuel(), 20.0, 1e-15);
    }

    @Test
    public void doesNotTankCarWhenGasExceedsCapacity() {
        try {
            MyNewCar car = new MyNewCar("Volvo", 50.0);
            car.tankGas(70.0);
        } catch (CarException e) {
            assertEquals(e.getErrorCode(), ErrorCode.CAPACITY_EXCEEDED);
        }
    }

    @Test
    public void doesNotTankCarWhenGasOfNegativeValue() {
        try {
            MyNewCar car = new MyNewCar("Volvo", 50.0);
            car.tankGas(-10.0);
        } catch (CarException e) {
            assertEquals(e.getErrorCode(), ErrorCode.GAS_VALUE_NEGATIVE);
        }
    }

    @Test
    public void doesMakeTrips() throws CarException, ParseException, TripException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        MyNewCar car = new MyNewCar("Volvo", 50.0);
        car.tankGas(50.0);
        car.makeTrip(sdf.parse("2014-11-11"), 100, 7.0);
        car.makeTrip(sdf.parse("2014-11-11"), 200, 14.0);
        assertEquals(car.totalDistance(), 300, 1e-15);
        assertEquals(car.totalGasConsumed(), 21.0, 1e-15);
    }

    @Test
    public void getDistanceByDate() throws CarException, ParseException, TripException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        MyNewCar car = new MyNewCar("Volvo", 50.0);
        car.tankGas(50.0);
        car.makeTrip(sdf.parse("2014-11-11"), 100, 7.0);
        car.makeTrip(sdf.parse("2014-11-12"), 200, 14.0);
        assertEquals(car.totalDistance(sdf.parse("2014-11-11")), 100, 1e-15);
    }

    @Test
    public void getDistanceByDateRange() throws CarException, ParseException, TripException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        MyNewCar car = new MyNewCar("Volvo", 50.0);
        car.tankGas(50.0);
        car.makeTrip(sdf.parse("2014-11-11"), 100, 7.0);
        car.makeTrip(sdf.parse("2014-11-12"), 200, 14.0);
        car.makeTrip(sdf.parse("2014-11-14"), 300, 14.0);
        assertEquals(car.totalDistance(sdf.parse("2014-11-10"), sdf.parse("2014-11-13")), 300, 1e-15);
    }

}