public IHttpActionResult EditPreferences([FromBody] FoodPreferencesDto foodPreferencesDto)
{
// Check if model is valid for the database
if (!ModelState.IsValid)
{
// If model is not valid, return bad request
return(BadRequest(ModelState));
}
try
{
// Get token string from request header
var tokenString = Request.Headers.Authorization.Parameter;
// If model is valid, call manager to get preferences
var manager = new FoodPreferencesManager();
var response = manager.EditFoodPreferences(tokenString, foodPreferencesDto);
// If there is an error in the response, return a bad request
if (response.Error != null)
{
return(BadRequest(response.Error));
}
// Otherwise, return the preferences
return(Ok(response));
}
catch (Exception)
{
// If any other error occurs, return a bad request
return(InternalServerError());
}
}
public void Should_FailValidation_When_FoodPreferencesIsNull()
{
// Arrange
var validator = new FoodPreferencesDtoValidator();
var foodPreferencesDto = new FoodPreferencesDto();
// Act
var result = validator.Validate(foodPreferencesDto);
// Assert
result.Errors.Should().NotBeNull();
}
/// <summary>
/// Method to edit user's food preferences
/// </summary>
/// <param name="foodPreferencesDto"></param>
/// <returns>Response DTO with a boolean determining success of the transaction</returns>
public ResponseDto <bool> EditFoodPreferences(string tokenString, FoodPreferencesDto foodPreferencesDto)
{
// Validate the food preference dto
var editFoodPreferencesValidationStrategy = new EditFoodPreferencesValidationStrategy(foodPreferencesDto);
var validationResult = editFoodPreferencesValidationStrategy.ExecuteStrategy();
// If the food preference dto fails validation, return an error
if (validationResult.Error != null)
{
return(new ResponseDto <bool>
{
Data = false,
Error = GeneralErrorMessages.MODEL_STATE_ERROR
});
}
// Extract username from token string
var tokenService = new TokenService();
var username = tokenService.GetTokenUsername(tokenString);
using (var gateway = new UserGateway())
{
// Get list of current food preferences from database
var currentFoodPreferences = gateway.GetFoodPreferencesByUsername(username).Data.FoodPreferences;
// Get list of updated food preferences from dto
var updatedFoodPreferences = foodPreferencesDto.FoodPreferences;
// Call method to create lists of food preferences to be added and to be removed
var preferencesToBeAdded = LeftOuterJoin(updatedFoodPreferences, currentFoodPreferences);
var preferencesToBeRemoved = LeftOuterJoin(currentFoodPreferences, updatedFoodPreferences);
// If no changes are to be made and bypass front-end validation, return true
if (preferencesToBeAdded.Count == 0 && currentFoodPreferences.Count == 0)
{
return(new ResponseDto <bool>
{
Data = true
});
}
// Otherwise, call gateway to update user's food preferences
var result = gateway.EditFoodPreferencesByUsername(username, preferencesToBeAdded, preferencesToBeRemoved);
// Return boolean determining success of update
return(result);
}
}
public void Should_PassValidation_When_AllRulesPass()
{
// Arrange
var validator = new FoodPreferencesDtoValidator();
var preferences = new List <string>()
{
"Pescetarian",
"Lacto-Vegetarian"
};
var foodPreferencesDto = new FoodPreferencesDto(preferences);
// Act
var result = validator.Validate(foodPreferencesDto);
// Assert
result.IsValid.Should().BeTrue();
result.Errors.Should().BeEmpty();
}
// Constructor
public EditFoodPreferencesValidationStrategy(FoodPreferencesDto foodPreferencesDto)
{
_foodPreferencesDto = foodPreferencesDto;
_foodPreferencesDtoValidator = new FoodPreferencesDtoValidator();
}
