From 866a5a15b8b722bc78d065f73adc0c465f264f55 Mon Sep 17 00:00:00 2001
From: transtrike <transtrike@gmail.com>
Date: Sat, 30 Jan 2021 18:45:18 +0200
Subject: IDFK

---
 .../Configurations/Mapping/RatingMappings.cs       | 12 +++++
 .../Models/Post/Rating/RatePostServiceModel.cs     | 13 ++++++
 .../Models/Post/Rating/ReadRatingServiceModel.cs   | 13 ++++++
 src/DevHive.Services/Services/RatingService.cs     | 54 ++++++++++++++++++++++
 4 files changed, 92 insertions(+)
 create mode 100644 src/DevHive.Services/Configurations/Mapping/RatingMappings.cs
 create mode 100644 src/DevHive.Services/Models/Post/Rating/RatePostServiceModel.cs
 create mode 100644 src/DevHive.Services/Models/Post/Rating/ReadRatingServiceModel.cs
 create mode 100644 src/DevHive.Services/Services/RatingService.cs

(limited to 'src/DevHive.Services')

diff --git a/src/DevHive.Services/Configurations/Mapping/RatingMappings.cs b/src/DevHive.Services/Configurations/Mapping/RatingMappings.cs
new file mode 100644
index 0000000..5da1b0d
--- /dev/null
+++ b/src/DevHive.Services/Configurations/Mapping/RatingMappings.cs
@@ -0,0 +1,12 @@
+using AutoMapper;
+
+namespace DevHive.Services.Configurations.Mapping
+{
+	public class RatingMappings : Profile
+	{
+		public RatingMappings()
+		{
+
+		}
+	}
+}
diff --git a/src/DevHive.Services/Models/Post/Rating/RatePostServiceModel.cs b/src/DevHive.Services/Models/Post/Rating/RatePostServiceModel.cs
new file mode 100644
index 0000000..d4eb7bd
--- /dev/null
+++ b/src/DevHive.Services/Models/Post/Rating/RatePostServiceModel.cs
@@ -0,0 +1,13 @@
+using System;
+
+namespace DevHive.Services.Models.Post.Rating
+{
+	public class RatePostServiceModel
+	{
+		public Guid UserId { get; set; }
+
+		public Guid PostId { get; set; }
+
+		public bool Liked { get; set; }
+	}
+}
diff --git a/src/DevHive.Services/Models/Post/Rating/ReadRatingServiceModel.cs b/src/DevHive.Services/Models/Post/Rating/ReadRatingServiceModel.cs
new file mode 100644
index 0000000..b071e74
--- /dev/null
+++ b/src/DevHive.Services/Models/Post/Rating/ReadRatingServiceModel.cs
@@ -0,0 +1,13 @@
+using System;
+
+namespace DevHive.Services.Models.Post.Rating
+{
+	public class ReadRatingServiceModel
+	{
+		public Guid PostId { get; set; }
+
+		public int Likes { get; set; }
+
+		public int Dislikes { get; set; }
+	}
+}
diff --git a/src/DevHive.Services/Services/RatingService.cs b/src/DevHive.Services/Services/RatingService.cs
new file mode 100644
index 0000000..2c5a6b6
--- /dev/null
+++ b/src/DevHive.Services/Services/RatingService.cs
@@ -0,0 +1,54 @@
+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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