private async Task ManageVoteStatusAsync(string topicId, bool isLike, TopicVote topicVote)
{
if (topicVote.Type == VoteType.Like && isLike == false)
{
await this.topicsService.CancelVoteAsync(topicId, true);
await this.topicsService.VoteTopicAsync(topicId, false);
topicVote.Type = VoteType.Dislike;
}
else if (topicVote.Type == VoteType.Like && isLike == true)
{
await this.topicsService.CancelVoteAsync(topicId, true);
topicVote.Type = VoteType.Neutral;
}
else if (topicVote.Type == VoteType.Dislike && isLike == true)
{
await this.topicsService.CancelVoteAsync(topicId, false);
await this.topicsService.VoteTopicAsync(topicId, true);
topicVote.Type = VoteType.Like;
}
else if (topicVote.Type == VoteType.Dislike && isLike == false)
{
await this.topicsService.CancelVoteAsync(topicId, false);
topicVote.Type = VoteType.Neutral;
}
else if (topicVote.Type == VoteType.Neutral && isLike == true)
{
await this.topicsService.VoteTopicAsync(topicId, true);
topicVote.Type = VoteType.Like;
}
else if (topicVote.Type == VoteType.Neutral && isLike == false)
{
await this.topicsService.VoteTopicAsync(topicId, false);
topicVote.Type = VoteType.Dislike;
}
}
public async Task <int> VoteTopicAsync(string topicId, string userId, bool isLike)
{
var topicVote = await this.topicVoteRepository
.All()
.FirstOrDefaultAsync(x => x.TopicId == topicId && x.UserId == userId);
if (topicVote == null)
{
topicVote = new TopicVote()
{
UserId = userId,
TopicId = topicId,
Type = isLike ? VoteType.Like : VoteType.Dislike,
};
if (isLike)
{
await this.topicsService.VoteTopicAsync(topicId, true);
}
else
{
await this.topicsService.VoteTopicAsync(topicId, false);
}
await this.topicVoteRepository.AddAsync(topicVote);
}
else
{
await this.ManageVoteStatusAsync(topicId, isLike, topicVote);
}
await this.topicVoteRepository.SaveChangesAsync();
if (isLike)
{
return(this.topicsService.GetTopicTotalLikes(topicId));
}
else
{
return(this.topicsService.GetTopicTotalDislikes(topicId));
}
}
public async Task <IActionResult> Vote(int topicId)
{
ClaimsPrincipal currentUser = User;
string currentUserName = currentUser.FindFirst(ClaimTypes.NameIdentifier).Value;
ApplicationUser user = await _userManager.FindByIdAsync(currentUserName);
TopicVote existingVote = applicationDbContext.TopicVotes.FirstOrDefault(v => v.User == user && v.TopicId == topicId);
if (existingVote == null)
{
applicationDbContext.TopicVotes.Add(new TopicVote
{
User = user,
TopicId = topicId
});
applicationDbContext.SaveChanges();
}
return(Ok(applicationDbContext.TopicVotes.Count(t => t.TopicId == topicId)));
}
