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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using AutoMapper;
using DevHive.Data.Interfaces.Repositories;
using DevHive.Data.Models;
using DevHive.Services.Interfaces;
using DevHive.Services.Models;
using DevHive.Services.Models.Post;
namespace DevHive.Services.Services
{
public class FeedService : IFeedService
{
private readonly IMapper _mapper;
private readonly IFeedRepository _feedRepository;
private readonly IUserRepository _userRepository;
public FeedService(IFeedRepository feedRepository, IUserRepository userRepository, IMapper mapper)
{
this._feedRepository = feedRepository;
this._userRepository = userRepository;
this._mapper = mapper;
}
/// <summary>
/// This method is used in the feed page.
/// See the FeedRepository "GetFriendsPosts" menthod for more information on how it works.
/// </summary>
public async Task<ReadPageServiceModel> GetPage(GetPageServiceModel model)
{
User user = null;
if (model.UserId != Guid.Empty)
user = await this._userRepository.GetByIdAsync(model.UserId);
else if (!string.IsNullOrEmpty(model.Username))
user = await this._userRepository.GetByUsernameAsync(model.Username);
else
throw new ArgumentException("Invalid given data!");
if (user == null)
throw new ArgumentException("User doesn't exist!");
// List<User> friendsList = user.Friends.Select(x => x.Friend).ToList();
// if (friendsList.Count == 0)
// throw new ArgumentException("User has no friends to get feed from!");
List<Post> posts = new();
// await this._feedRepository
// .GetFriendsPosts(friendsList, model.FirstRequestIssued, model.PageNumber, model.PageSize);
ReadPageServiceModel readPageServiceModel = new();
foreach (Post post in posts)
readPageServiceModel.Posts.Add(this._mapper.Map<ReadPostServiceModel>(post));
return readPageServiceModel;
}
/// <summary>
/// This method is used in the profile pages.
/// See the FeedRepository "GetUsersPosts" menthod for more information on how it works.
/// </summary>
public async Task<ReadPageServiceModel> GetUserPage(GetPageServiceModel model)
{
User user = null;
if (!string.IsNullOrEmpty(model.Username))
user = await this._userRepository.GetByUsernameAsync(model.Username);
else
throw new ArgumentException("Invalid given data!");
if (user == null)
throw new ArgumentException("User doesn't exist!");
List<Post> posts = await this._feedRepository
.GetUsersPosts(user, model.FirstRequestIssued, model.PageNumber, model.PageSize);
ReadPageServiceModel readPageServiceModel = new();
foreach (Post post in posts)
readPageServiceModel.Posts.Add(this._mapper.Map<ReadPostServiceModel>(post));
return readPageServiceModel;
}
}
}
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