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using System;
using System.Diagnostics;
using System.Threading.Tasks;
using AutoMapper;
using DevHive.Data.Interfaces.Repositories;
using DevHive.Data.Models;
using DevHive.Services.Models.Post.Rating;
using Microsoft.CodeAnalysis.CSharp.Syntax;
namespace DevHive.Services.Services
{
public class RatingService
{
private readonly IPostRepository _postRepository;
private readonly IRatingRepository _ratingRepository;
private readonly IMapper _mapper;
public RatingService(IPostRepository postRepository, IRatingRepository ratingRepository, IMapper mapper)
{
this._postRepository = postRepository;
this._ratingRepository = ratingRepository;
this._mapper = mapper;
}
public async Task<ReadRatingServiceModel> RatePost(RatePostServiceModel ratePostServiceModel)
{
if (!await this._postRepository.DoesPostExist(ratePostServiceModel.PostId))
throw new ArgumentNullException("Post does not exist!");
if (!await this._ratingRepository.HasUserRatedThisPost(ratePostServiceModel.UserId, ratePostServiceModel.PostId))
throw new ArgumentException("You can't rate the same post more then one(duh, amigo)");
Post post = await this._postRepository.GetByIdAsync(ratePostServiceModel.PostId);
Rating rating = post.Rating;
if (ratePostServiceModel.Liked)
rating.Likes++;
else
rating.Dislikes++;
bool success = await this._ratingRepository.EditAsync(rating.Id, rating);
if (!success)
throw new InvalidOperationException("Unable to rate the post!");
Rating newRating = await this._ratingRepository.GetByIdAsync(rating.Id);
return this._mapper.Map<ReadRatingServiceModel>(newRating);
}
public async Task<ReadRatingServiceModel> RemoveUserRateFromPost(Guid userId, Guid postId)
{
throw new NotImplementedException();
}
}
}
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