public async Task <IActionResult> Calculator([HttpTrigger(AuthorizationLevel.Function, "get", Route = null)] HttpRequest req, ILogger log)
{
try
{
var calculatorInstructions = _functionHelpers.LoadInstructionsfromFile(Assembly.GetExecutingAssembly(), "CalculatorFunction.Instructions.txt");
if (string.IsNullOrEmpty(calculatorInstructions))
{
log.LogError("Instruction file is either not found or is empty.");
return(new BadRequestObjectResult("Instruction File is empty or not found."));
}
var instructionList = Instructions.GetInstructionList(calculatorInstructions);
var result = float.Parse(instructionList.Where(x => x.Keyword == "apply").FirstOrDefault()?.Number);
foreach (var instruct in instructionList)
{
switch (instruct.Keyword.ToLower())
{
case "add":
result += float.Parse(instruct.Number);
break;
case "subtract":
result -= float.Parse(instruct.Number);
break;
case "multiply":
result *= float.Parse(instruct.Number);
break;
case "divide":
result /= float.Parse(instruct.Number);
break;
case "apply":
break;
default:
log.LogError($"keyword is not valid {instruct.Keyword}");
return(new BadRequestObjectResult("Keyword in instruction file is not valid."));
}
}
CalculatorResponse response = new CalculatorResponse()
{
Result = result
};
log.LogInformation($"Result Calculated {result}");
return(new OkObjectResult(response));
}
catch (Exception ex)
{
log.LogError($"An error has occured {ex.Message}");
return(new BadRequestObjectResult("An error has occurred."));
}
}
