/// <summary>
/// this function will get data from api and then in case there are no results then will return
/// to the main project that there are nothing to show
/// </summary>
/// <param name="distance">the distance the user wishes to travel by starship</param>
/// <returns>it will return true if all calculations done and displayed or false in case of failure</returns>
public bool ProcessData(decimal distance)
{
///bringing data from the api
starships ships = _dataapi.getstarships();
int nbstops = 0;
if (ships == null)
{
return(false);
}
///checking if api has returned results
if (ships.results.Count() != 0)
{
///looping the startships, calculating the number of stops and displaying the results
foreach (starship ship in ships.results)
{
///calculating the number of stops
nbstops = _calc.getnumberofstops(distance, ship.MGLT, ship.consumables);
if (nbstops > -1)
{
///displaying the results
_disp.displaylistshipandstop(ship, nbstops);
}
}
}
return(true);
}
/// <summary>
/// getting data from the api
/// </summary>
/// <param name="strurl">the url to call the api if empty take the default address else use the url sent</param>
/// <returns>an object of type starships</returns>
public starships getstarshipsfromapi(string strurl)
{
string strresult;
starships ships = null;
using (WebClient client = new WebClient())
{
///using webclient in order to bring data from api, and need the data to be of type JSON
client.Headers.Add("Content-Type: application/json");
client.Headers.Add("Accept: application/json");
///if url empty take the default url
if (strurl == "")
{
strurl = "https://swapi.co/api/starships";
}
try
{
///get data from the api
strresult = client.DownloadString(strurl);
///convert JSON data into ojects of type starships
ships = JsonConvert.DeserializeObject <starships>(strresult);
}
catch (Exception ex)
{
///if an error or url not valid send back an error message
_disp.displaymessage($"Error in Getting data { ex.Message }", "error");
}
}
return(ships);
}
public void testgetstarships_wrongurl()
{
//act
starships ships = dataapi.getstarshipsfromapi("myapi");
//assert
Assert.IsNull(ships);
}
public void testgetstarships_success()
{
//act
starships ships = dataapi.getstarshipsfromapi("");
//assert
Assert.IsNotNull(ships);
}
public void testgetstarships_null()
{
//act
starships ships = dataapi.getstarshipsfromapi(null);
//assert
Assert.IsNull(ships);
}
