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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using AutoMapper.Internal;
using DevHive.Data.Interfaces.Repositories;
using DevHive.Data.Models;
using Microsoft.EntityFrameworkCore;
namespace DevHive.Data.Repositories
{
public class FeedRepository : IFeedRepository
{
private readonly DevHiveContext _context;
public FeedRepository(DevHiveContext context)
{
this._context = context;
}
public async Task<List<Post>> GetFriendsPosts(List<User> friendsList, DateTime firstRequestIssued, int pageNumber, int pageSize)
{
List<Guid> friendsIds = friendsList.Select(f => f.Id).ToList();
List<Post> posts = await this._context.Posts
.Where(post => post.TimeCreated < firstRequestIssued)
.Where(p => friendsIds.Contains(p.Creator.Id))
.ToListAsync();
// Ordering by descending can't happen in query, because it doesn't order it
// completely correctly (example: in query these two times are ordered
// like this: 2021-01-30T11:49:45, 2021-01-28T21:37:40.701244)
posts = posts
.OrderByDescending(x => x.TimeCreated.ToFileTime())
.Skip((pageNumber - 1) * pageSize)
.Take(pageSize)
.ToList();
return posts;
}
public async Task<List<Post>> GetUsersPosts(User user, DateTime firstRequestIssued, int pageNumber, int pageSize)
{
List<Post> posts = await this._context.Posts
.Where(post => post.TimeCreated < firstRequestIssued)
.Where(p => p.Creator.Id == user.Id)
.ToListAsync();
// Look at GetFriendsPosts on why this is done like this
posts = posts
.OrderByDescending(x => x.TimeCreated.ToFileTime())
.Skip((pageNumber - 1) * pageSize)
.Take(pageSize)
.ToList();
return posts;
}
}
}
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