/// <summary>
/// Gets the guide by identifier in asynchronous mode.
/// Includes drug instruction and doctor's notes.
/// </summary>
/// <param name="id">The prescription identifier.</param>
/// <returns>
/// Drug instruction and doctor's notes.
/// </returns>
/// <exception cref="ArgumentException">
/// No prescription with such id.
/// </exception>
public async Task <PrescriptionGuide> GetGuideById(int id)
{
// Return IQueryable<Prescription> with one entity
var prescriptions = await this.unitOfWork.Prescriptions.GetAllAsync(p => p.Id == id && p.IsDeleted == false);
if (prescriptions.Count() == 0)
{
throw new ArgumentException(PRESCRIPTION_IS_NOT_FOUND);
}
// Return IQueryable<Drug> with one entity
var drugs = await this.unitOfWork.Drugs.GetAllAsync(d => d.Id == prescriptions.First().DrugId);
// Return IQueryable<PrescriptionGuide> with one entity
var guide = prescriptions.Join(
drugs,
p => p.DrugId,
d => d.Id,
(p, d) => new PrescriptionGuide
{
Notes = p.Notes,
Instruction = d.Instruction
});
PrescriptionGuide result = guide.FirstOrDefault();
return(result);
}
public async Task <IActionResult> GetPrescriptionGuideById(int id)
{
try
{
PrescriptionGuide result = await this.service.GetGuideById(id);
return(this.Ok(result));
}
catch (ArgumentException ex)
{
return(this.NotFound(ex.Message));
}
}
