public async Task <IResult <IReadOnlyCollection <byte> > > HandleAsync(GetHeatMapCommand command)
{
var validationResult = await IsValidAsync(command);
if (validationResult.HasFailed())
{
return(validationResult.Map <IReadOnlyCollection <byte> >());
}
var userId = command.UserId ?? command.CurrentUserId;
var gamesCount = await _dataContext.Users.Where(x => x.Id == userId).Select(x => x.Games).CountAsync();
var existingActualHeatMap = await _dataContext.GeneratedHeatMaps
.AsNoTracking()
.FirstOrDefaultAsync(x => x.UserId == userId && x.GeneratedAt > DateTime.Now.AddDays(-1));
if (existingActualHeatMap != null && existingActualHeatMap.GamesCount == gamesCount)
{
return(existingActualHeatMap.HeatMap.ToList().ToSuccessfulResult());
}
PythonScriptRunner.RunScript("PythonScripts/heatmap.py", userId.ToString());
var fileInfo = new FileInfo("heatplot.png");
var data = new byte[fileInfo.Length];
await using (var fs = fileInfo.OpenRead())
{
fs.Read(data, 0, data.Length);
}
fileInfo.Delete();
_dataContext.GeneratedHeatMaps.Add(new GeneratedHeatmap
{
HeatMap = data,
UserId = userId,
GeneratedAt = DateTime.Now,
GamesCount = gamesCount
});
await _dataContext.SaveChangesAsync();
return(data.ToList().ToSuccessfulResult());
}
public async Task <IResult <IReadOnlyCollection <GameWithImageResponse> > > HandleAsync(GetRecommendedGamesCommand command)
{
var validationResult = await IsValidAsync(command);
if (validationResult.HasFailed())
{
return(validationResult.Map <IReadOnlyCollection <GameWithImageResponse> >());
}
var userId = command.UserId ?? command.CurrentUserId;
var yesterday = DateTime.Now.AddDays(-1);
var existingActualRecommendation = await _dataContext.GamesRecommendations
.AsNoTracking()
.Include(x => x.RecommendedGames)
.FirstOrDefaultAsync(x => x.UserId == userId && x.GeneratedAt > yesterday);
if (existingActualRecommendation != null && existingActualRecommendation.RecommendedGames.Count > 0)
{
var recommendedGamesIds = existingActualRecommendation.RecommendedGames.Select(x => x.GameId);
var games = await _dataContext.Games
.Include(x => x.CoverGameImage)
.Where(x => recommendedGamesIds.Contains(x.Id))
.ToListAsync();
return(games.Select(x => new GameWithImageResponse
{
Category = x.GameCategory,
Id = x.Id,
ImageBytes = x.CoverGameImage.Data.ToList(),
Title = x.Name
})
.ToList()
.ToSuccessfulResult());
}
PythonScriptRunner.RunScript("PythonScripts/recommender.py", userId.ToString());
var lines = File.ReadAllLines("PythonScripts/list_of_games.txt");
var recommendedGames = new List <Game>();
foreach (var line in lines)
{
var game = await _dataContext.Games
.Include(x => x.CoverGameImage)
.SingleOrDefaultAsync(x => x.Name == line);
if (game != null)
{
recommendedGames.Add(game);
}
}
var gamesRecommendation = new GamesRecommendation
{
GeneratedAt = DateTime.Now,
UserId = userId,
RecommendedGames = recommendedGames
.Select(x => new RecommendationEntry {
Game = x
}).ToList()
};
_dataContext.GamesRecommendations.Add(gamesRecommendation);
await _dataContext.SaveChangesAsync();
return(recommendedGames.Select(x => new GameWithImageResponse
{
Category = x.GameCategory,
Id = x.Id,
ImageBytes = x.CoverGameImage.Data.ToList(),
Title = x.Name
})
.ToList()
.ToSuccessfulResult());
}