Merge pull request #18 from Team-Kaleidoscope/devv0.1

First stage: Complete. Awaiting further progress...

1 files changed, 74 insertions, 0 deletions

diff --git a/src/DevHive.Data/Repositories/CommentRepository.cs b/src/DevHive.Data/Repositories/CommentRepository.cs
new file mode 100644
index 0000000..bee7624
--- /dev/null
+++ b/src/DevHive.Data/Repositories/CommentRepository.cs
@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Threading.Tasks;
+using DevHive.Data.Interfaces.Repositories;
+using DevHive.Data.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace DevHive.Data.Repositories
+{
+	public class CommentRepository : BaseRepository<Comment>, ICommentRepository
+	{
+		private readonly DevHiveContext _context;
+
+		public CommentRepository(DevHiveContext context)
+			: base(context)
+		{
+			this._context = context;
+		}
+
+		#region Read
+		public override async Task<Comment> GetByIdAsync(Guid id)
+		{
+			return await this._context.Comments
+				.Include(x => x.Creator)
+				.Include(x => x.Post)
+				.FirstOrDefaultAsync(x => x.Id == id);
+		}
+
+		/// <summary>
+        /// This method returns the comment that is made at exactly the given time and by the given creator
+        /// </summary>
+		public async Task<Comment> GetCommentByIssuerAndTimeCreatedAsync(Guid issuerId, DateTime timeCreated)
+		{
+			return await this._context.Comments
+				.FirstOrDefaultAsync(p => p.Creator.Id == issuerId &&
+					p.TimeCreated == timeCreated);
+		}
+
+		public async Task<List<Comment>> GetPostComments(Guid postId)
+		{
+			return await this._context.Posts
+				.SelectMany(x => x.Comments)
+				.Where(x => x.Post.Id == postId)
+				.ToListAsync();
+		}
+		#endregion
+
+		#region Update
+		public override async Task<bool> EditAsync(Guid id, Comment newEntity)
+		{
+			Comment comment = await this.GetByIdAsync(id);
+
+			this._context
+				.Entry(comment)
+				.CurrentValues
+				.SetValues(newEntity);
+
+			return await this.SaveChangesAsync();
+		}
+		#endregion
+
+
+		#region Validations
+		public async Task<bool> DoesCommentExist(Guid id)
+		{
+			return await this._context.Comments
+				.AsNoTracking()
+				.AnyAsync(r => r.Id == id);
+		}
+		#endregion
+	}
+}