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using Elements.Data;
using Elements.Data.Models;
using Microsoft.EntityFrameworkCore;
namespace Elements.Backend.Services;
public class FinishVoteService
{
private readonly ApplicationDbContext _dbContext;
private readonly ILogger<FinishVoteService> _logger;
public FinishVoteService(ApplicationDbContext dbContext, ILogger<FinishVoteService> logger)
{
_dbContext = dbContext;
_logger = logger;
}
public async Task DoSomethingAsync()
{
_logger.LogDebug("Starting finalizing votes");
List<Suggestion> finishedSuggestions = _dbContext.Suggestions
.Include(s => s.Votes)
.Where(s => DateTime.UtcNow > s.VotingEnd)
.ToList();
if (finishedSuggestions.Count == 0)
return;
bool finished = false;
while (!finished)
{
Suggestion currentSuggestion = finishedSuggestions.First();
int firstElementId = currentSuggestion.FirstElementId;
int secondElementId = currentSuggestion.SecondElementId;
//Get all suggestions with same recipe as current suggestion
List<Suggestion> sameRecipeSuggestions = finishedSuggestions.Where(s =>
(s.FirstElementId == firstElementId && s.SecondElementId == secondElementId) ||
(s.FirstElementId == secondElementId && s.SecondElementId == firstElementId))
.ToList();
sameRecipeSuggestions.Sort((s1, s2) => s2.Votes.Count.CompareTo(s1.Votes.Count));
Suggestion winner;
if (sameRecipeSuggestions.Count > 1 &&
sameRecipeSuggestions[0].Votes.Count == sameRecipeSuggestions[1].Votes.Count)
{
List<Suggestion> sameAmountOfVotes = sameRecipeSuggestions
.Where(s => s.Votes.Count == sameRecipeSuggestions[0].Votes.Count)
.OrderBy(s => s.CreationDate)
.ToList();
winner = sameAmountOfVotes[0];
}
else
{
winner = sameRecipeSuggestions[0];
}
Element newElement = new()
{
CreationDate = winner.CreationDate,
UserId = winner.UserId,
Name = winner.Name,
State = ElementState.HasColor,
IconPng = winner.Icon
};
await _dbContext.Elements.AddAsync(newElement);
await _dbContext.SaveChangesAsync();
await _dbContext.Recipes.AddAsync(new Recipe
{
FirstElementId = winner.FirstElementId,
SecondElementId = winner.SecondElementId,
ResultElementId = newElement.Id,
});
//Delete votes
foreach (Vote vote in sameRecipeSuggestions.SelectMany(suggestion => suggestion.Votes))
_dbContext.Entry(vote).State = EntityState.Deleted;
//Delete suggestions
foreach (Suggestion suggestion in sameRecipeSuggestions)
_dbContext.Entry(suggestion).State = EntityState.Deleted;
await _dbContext.SaveChangesAsync();
finishedSuggestions = finishedSuggestions
.Where(s => !(s.FirstElementId == firstElementId && s.SecondElementId == secondElementId) &&
!(s.FirstElementId == secondElementId && s.SecondElementId == firstElementId))
.ToList();
if (finishedSuggestions.Count == 0)
finished = true;
}
}
}
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