public async Task <PersonalizeViewModel> GetRecommendations(string userid)
{
try
{
var randomUserIdGenerator = new RandomUserIdGenerator();
if (string.IsNullOrEmpty(userid))
{
userid = randomUserIdGenerator.GetUser();
}
PersonalizeViewModel results = new PersonalizeViewModel();
//user recommendations
_logger.LogInformation("START: getting recommended items");
var recommendations = await PersonalizedRecommendationsService.GetRecommendations(userid);
results.User = recommendations.User;
results.RecommendedItems = recommendations.RecommendedItems;
_logger.LogInformation("END: getting recommended items");
//movies rated by user
_logger.LogInformation("START: getting movies rated by user");
results.MoviesRatedByUser = await PersonalizedRecommendationsService.GetAllMoviesRatedByUser(userid);
_logger.LogInformation("END: getting movies rated by user");
//most popular items
_logger.LogInformation("START: getting most popular items");
results.MostPopularItems = await PersonalizedRecommendationsService.GetMostPopularItems(userid);
_logger.LogInformation("END: getting most popular items");
//recommendations by ranking for most popular items
_logger.LogInformation("START: getting personalized-ranking for most popular items");
results.PersonalizedRankingResults = await PersonalizedRecommendationsService.GetPersonalizedResults(userid, results.MostPopularItems.Movies);
_logger.LogInformation("END: getting personalized-ranking for recommended items");
//recommendations by ranking for likely recommendations
_logger.LogInformation("START: getting personalized-ranking for recommended items");
results.PersonalizedRankingResultsForRecommendations = await PersonalizedRecommendationsService.GetPersonalizedResults(userid, results.RecommendedItems.Movies);
_logger.LogInformation("END: getting personalized-ranking for recommended items");
return(results);
}
catch (Exception e)
{
throw;
}
}
public virtual JsonResult Save(string data)
{
var js = new JavaScriptSerializer();
js.Deserialize <dynamic>(data);
var viewModel = new PersonalizeViewModel();
viewModel.UpdateTemplateChartViewModel(data);
var response = _workspaceService.TemplateSave(viewModel);
return(Json(response));
}
public PersonalizeViewModel GetUserData(string userId)
{
PersonalizeViewModel results = null;
results = new PersonalizeViewModel {
User = new User()
{
User_Id = userId
}
};
return(results);
}
public async Task <PersonalizeViewModel> GetRecommendations(string userId)
{
PersonalizeViewModel results = null;
try
{
//USER_PERSONALIZATION -- userid required
var request = new GetRecommendationsRequest
{
CampaignArn = AwsParameterStoreClient.GetPersonalRecommendationsArn(), //personal-recommendations-metadata
UserId = userId,
NumResults = 10
};
var response = await AmazonPersonalizeRuntimeClient.GetRecommendationsAsync(request);
var recommendedItems = response.ItemList;
var json = JsonConvert.SerializeObject(recommendedItems);
Logger.LogInformation("GetRecommendations:" + userId + ": " + json);
results = new PersonalizeViewModel {
User = new User()
{
User_Id = userId
}
};
//get movie thumbnail from imdb
IList <RecommendedItems> recItems = new List <RecommendedItems>();
List <string> itemIds = recommendedItems.Select(s => s.ItemId).ToList();
results.RecommendedItems.Movies = await _storageService.GetMovieData(itemIds.ToArray());
return(results);
}
catch (Exception ex)
{
throw;
}
}
public static PersonalizeViewModel UpdateTemplateChartViewModel(this PersonalizeViewModel viewModel,
string clientField)
{
JavaScriptSerializer js = new JavaScriptSerializer();
dynamic layoutData = js.Deserialize <dynamic>(clientField);
var list = new List <TemplateChartViewModel>();
foreach (var item in layoutData)
{
list.Add(
new TemplateChartViewModel
{
ChartId = Convert.ToInt32(item["ChartId"]),
TemplateRow = Convert.ToInt32(item["TemplateRow"]),
TemplateOrder = Convert.ToInt32(item["TemplateOrder"])
});
}
viewModel.TemplateId = layoutData[0]["TemplateId"].ToString();
viewModel.Type = Convert.ToInt32(layoutData[0]["Type"]);
viewModel.TemplateChartList = list;
return(viewModel);
}
