public async Task <MostPopularItems> GetMostPopularItems(string userId)
{
MostPopularItems results = null;
try
{
//USER_PERSONALIZATION -- userid required
var request = new GetRecommendationsRequest
{
CampaignArn = AwsParameterStoreClient.GetSimsMostPopularArn(), //sims-most-popular
UserId = userId,
NumResults = 10
};
var response = await AmazonPersonalizeRuntimeClient.GetRecommendationsAsync(request);
var recommendedItems = response.ItemList;
var json = JsonConvert.SerializeObject(recommendedItems);
Logger.LogInformation("GetMostPopularItems for userid:" + userId + ": " + json);
results = new MostPopularItems();
List <string> itemIds = recommendedItems.Select(s => s.ItemId).ToList();
results.Movies = await _storageService.GetMovieData(itemIds.ToArray());
return(results);
}
catch (Exception ex)
{
throw;
}
}
public PersonalizedRecommendationsService(ILogger logger)
{
AmazonPersonalizeClient = new AmazonPersonalizeClient(RegionEndpoint.USEast1);
AmazonPersonalizeRuntimeClient = new AmazonPersonalizeRuntimeClient(RegionEndpoint.USEast1);
Logger = logger;
}
protected IAmazonPersonalizeRuntime CreateClient(AWSCredentials credentials, RegionEndpoint region)
{
var config = new AmazonPersonalizeRuntimeConfig {
RegionEndpoint = region
};
Amazon.PowerShell.Utils.Common.PopulateConfig(this, config);
this.CustomizeClientConfig(config);
var client = new AmazonPersonalizeRuntimeClient(credentials, config);
client.BeforeRequestEvent += RequestEventHandler;
client.AfterResponseEvent += ResponseEventHandler;
return(client);
}
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 async Task <SimilarItemViewModel> GetSimilarItems(string movieItemId)
{
SimilarItemViewModel results = null;
try
{
//RELATED_ITEMS -- itemId required
var relateditemsrequest = new GetRecommendationsRequest
{
CampaignArn = AwsParameterStoreClient.GetSimsArn(), //sims-arn
ItemId = movieItemId,
NumResults = 10
};
var relateditemsrequestresponse = await AmazonPersonalizeRuntimeClient.GetRecommendationsAsync(relateditemsrequest);
var relateditemsrequestrecommendedItems = relateditemsrequestresponse.ItemList;
var json = JsonConvert.SerializeObject(relateditemsrequestrecommendedItems);
Logger.LogInformation("GetSimilarItems for movie:" + movieItemId + ": " + json);
results = new SimilarItemViewModel
{
//selected movie
Movie = await _storageService.GetMovieData(movieItemId)
};
List <string> itemIds = relateditemsrequestrecommendedItems.Select(s => s.ItemId).ToList();
results.SimilarItems.Movies = await _storageService.GetMovieData(itemIds.ToArray());
return(results);
}
catch (Exception ex)
{
throw;
}
}
public async Task <PersonalizedRankingResults> GetPersonalizedResults(string userId, List <Movie> movies)
{
PersonalizedRankingResults results = null;
try
{
//USER_PERSONALIZATION -- userid required
var request = new GetPersonalizedRankingRequest //personal-ranking
{
CampaignArn =
AwsParameterStoreClient.GetPersonalRankingArn(),
UserId = userId,
InputList = movies.Select(s => s.Id).ToList()
};
var response = await AmazonPersonalizeRuntimeClient.GetPersonalizedRankingAsync(request);
var recommendedItems = response.PersonalizedRanking;
var json = JsonConvert.SerializeObject(recommendedItems);
Logger.LogInformation("GetPersonalizedResults:" + userId + ": " + json);
results = new PersonalizedRankingResults();
List <string> itemIds = recommendedItems.Select(s => s.ItemId).ToList();
results.Movies = await _storageService.GetMovieData(itemIds.ToArray());
return(results);
}
catch (Exception ex)
{
throw;
}
}
