/// <summary>
/// 1- Check input consitency.
/// 2- Convert String to enum and call CoreCountriesService
/// </summary>
/// <param name="service">a Countryservice</param>
/// <param name="continentId">a contientID (e.g : Africa)</param>
/// <returns>Countries. Does not throw any exception. </returns>
public async Task <(int, IEnumerable <HRCountry>)> GetHRCountriesByContinentAsync(ICoreCountriesService service, String continentId)
{
//1-
Region region;
if (service == null)
{
return(StatusCodes.Status500InternalServerError, null);
}
//2-
if (!Enum.TryParse(continentId, out region))
{
return(StatusCodes.Status400BadRequest, null);
}
else
{
try
{
using (Task <IEnumerable <HRCountry> > task = service.GetHRCountriesByContinentAsync(region))
{
await task;
return(StatusCodes.Status200OK, task.Result);
}
}
catch (Exception)
{
return(StatusCodes.Status500InternalServerError, null);
}
}
}
/// <summary>
/// Version 1 : Get HRCountry then HRBorder one by one.
/// 1- Get Corresponding HRCountries
/// 2- Foreach HRCountry get single HRBorders and push it in retrun Enumerable
/// </summary>
/// <param name="region"></param>
/// <returns></returns>
public async Task <IEnumerable <HRBorder> > GetHRBordersByContinentAsync(Region region)
{
if (_hrCountriesService == null || _bordersRepository == null)
{
if (_logger != null)
{
_logger.LogError("_hrCountriesService or _bordersRepository is null in HRCoreBordersServices");
}
throw new MemberAccessException();
}
//1-
using (Task <IEnumerable <HRCountry> > countriesTask = _hrCountriesService.GetHRCountriesByContinentAsync(region))
{
await countriesTask;
if (countriesTask.IsCompleted)
{
//!TODO add robustness and UT
List <HRBorder> retour = new List <HRBorder>();
Dictionary <String, Region> idsAndRegions = new Dictionary <string, Region>();
//2-
foreach (HRCountry iter in countriesTask.Result)
{
idsAndRegions.Add(iter.Alpha2Code, iter.Region);
}
using (Task <IEnumerable <HRBorder> > bordersTask = _bordersRepository.GetAsync(idsAndRegions.Keys))
{
await bordersTask;
if (bordersTask.IsCompleted)
{
foreach (HRBorder borderIter in bordersTask.Result)
{
borderIter.BorderRegion = idsAndRegions[borderIter.ISO2].ToString();
retour.Add(borderIter);
}
return(retour);
}
else
{
throw new Exception("GetAsync (HRBorders) fail.");
}
}
}
else
{
throw new Exception("GetHRCountriesByContinentAsync fail.");
}
}
}