public async Task<List<ItemRecommendation>> GetItemRecommendationsAsync(string userId, int maxNumberOfItems)
{
var request = new JObject();
request[Constants.UserId] = userId;
request[Constants.MaxNumberOfItems] = maxNumberOfItems;
var body = request.ToString(Formatting.None);
var response = (JObject) (await ExecuteAsync(Constants.EngineResource, Method.POST, body));
var recommendations = new List<ItemRecommendation>();
foreach (var item in response[Constants.Items])
{
var property = item.First.Value<JProperty>();
var recommendation = new ItemRecommendation
{
ItemId = property.Name,
Score = item.First.First.Value<float>()
};
recommendations.Add(recommendation);
}
return recommendations;
}
public async Task <List <ItemRecommendation> > GetItemRecommendationsAsync(string userId, int maxNumberOfItems)
{
var request = new JObject();
request[Constants.UserId] = userId;
request[Constants.MaxNumberOfItems] = maxNumberOfItems;
var body = request.ToString(Formatting.None);
var response = (JObject)(await ExecuteAsync(Constants.EngineResource, Method.POST, body));
var recommendations = new List <ItemRecommendation>();
foreach (var item in response[Constants.Items])
{
var property = item.First.Value <JProperty>();
var recommendation = new ItemRecommendation
{
ItemId = property.Name,
Score = item.First.First.Value <float>()
};
recommendations.Add(recommendation);
}
return(recommendations);
}
public List <ItemRecommendation> GetItemRankings(string userId, string[] itemIds)
{
if (!itemIds.Any())
{
throw new InvalidOperationException("Must have at least one itemId");
}
var request = new JObject();
request[Constants.UserId] = userId;
var jItems = new JArray();
foreach (var itemId in itemIds)
{
jItems.Add(itemId);
}
request[Constants.ItemIds] = jItems;
var body = request.ToString(Formatting.None);
var response = (JObject)Execute(Constants.EngineResource, Method.POST, body);
if (response[Constants.IsOriginal].Value <bool>())
{
return(new List <ItemRecommendation>());
}
var recommendations = new List <ItemRecommendation>();
foreach (var item in response[Constants.Items])
{
var property = item.First.Value <JProperty>();
var recommendation = new ItemRecommendation
{
ItemId = property.Name,
Score = item.First.First.Value <float>()
};
recommendations.Add(recommendation);
}
return(recommendations);
}
public List<ItemRecommendation> GetItemRankings(string userId, string[] itemIds)
{
if (!itemIds.Any())
{
throw new InvalidOperationException("Must have at least one itemId");
}
var request = new JObject();
request[Constants.UserId] = userId;
var jItems = new JArray();
foreach (var itemId in itemIds)
{
jItems.Add(itemId);
}
request[Constants.ItemIds] = jItems;
var body = request.ToString(Formatting.None);
var response = (JObject)Execute(Constants.EngineResource, Method.POST, body);
if (response[Constants.IsOriginal].Value<bool>())
{
return new List<ItemRecommendation>();
}
var recommendations = new List<ItemRecommendation>();
foreach (var item in response[Constants.Items])
{
var property = item.First.Value<JProperty>();
var recommendation = new ItemRecommendation
{
ItemId = property.Name,
Score = item.First.First.Value<float>()
};
recommendations.Add(recommendation);
}
return recommendations;
}
