From 50578b63e3e977272a5dd61f99ab23ad1daaf349 Mon Sep 17 00:00:00 2001
From: Pavel Krymets <pavel@krymets.com>
Date: Sun, 26 Jan 2020 17:12:05 -0800
Subject: [PATCH] Upvote (#360)

---
 src/dotnet/APIView/APIViewWeb/Client/css/site.scss    |  7 +++++++
 .../APIViewWeb/Controllers/CommentsController.cs      |  8 ++++++++
 src/dotnet/APIView/APIViewWeb/Models/CommentModel.cs  |  2 ++
 .../Pages/Shared/_CommentThreadPartial.cshtml         | 11 +++++++++++
 .../APIViewWeb/Repositories/CommentsManager.cs        | 11 +++++++++++
 5 files changed, 39 insertions(+)

diff --git a/src/dotnet/APIView/APIViewWeb/Client/css/site.scss b/src/dotnet/APIView/APIViewWeb/Client/css/site.scss
index ae1f09fa60..da09385a79 100644
--- a/src/dotnet/APIView/APIViewWeb/Client/css/site.scss
+++ b/src/dotnet/APIView/APIViewWeb/Client/css/site.scss
@@ -306,6 +306,13 @@ code-inner {
     margin: -8px -16px;
 }
 
+.btn-upvote {
+    filter: grayscale(100%) opacity(30%);
+    &.active {
+        filter: unset;
+    }
+}
+
 .new-comment-content {
     position: relative;
     margin: 0 4px 8px;
diff --git a/src/dotnet/APIView/APIViewWeb/Controllers/CommentsController.cs b/src/dotnet/APIView/APIViewWeb/Controllers/CommentsController.cs
index d3bea62028..e507985178 100644
--- a/src/dotnet/APIView/APIViewWeb/Controllers/CommentsController.cs
+++ b/src/dotnet/APIView/APIViewWeb/Controllers/CommentsController.cs
@@ -64,6 +64,14 @@ public async Task<ActionResult> Delete(string reviewId, string commentId, string
             return await CommentPartialAsync(reviewId, elementId);
         }
 
+        [HttpPost]
+        public async Task<ActionResult> ToggleUpvote(string reviewId, string commentId, string elementId)
+        {
+            await _commentsManager.ToggleUpvoteAsync(User, reviewId, commentId);
+
+            return await CommentPartialAsync(reviewId, elementId);
+        }
+
         private async Task<ActionResult> CommentPartialAsync(string reviewId, string elementId)
         {
             var comments = await _commentsManager.GetReviewCommentsAsync(reviewId);
diff --git a/src/dotnet/APIView/APIViewWeb/Models/CommentModel.cs b/src/dotnet/APIView/APIViewWeb/Models/CommentModel.cs
index ee948f3d44..0ad1196ed6 100644
--- a/src/dotnet/APIView/APIViewWeb/Models/CommentModel.cs
+++ b/src/dotnet/APIView/APIViewWeb/Models/CommentModel.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using Newtonsoft.Json;
 
 namespace APIViewWeb.Models
@@ -15,5 +16,6 @@ public class CommentModel
         public string Username { get; set; }
         public bool IsResolve { get; set; }
         public DateTime? EditedTimeStamp { get; set; }
+        public List<string> Upvotes { get; set; } = new List<string>();
     }
 }
diff --git a/src/dotnet/APIView/APIViewWeb/Pages/Shared/_CommentThreadPartial.cshtml b/src/dotnet/APIView/APIViewWeb/Pages/Shared/_CommentThreadPartial.cshtml
index 77b424acd8..127350f0d4 100644
--- a/src/dotnet/APIView/APIViewWeb/Pages/Shared/_CommentThreadPartial.cshtml
+++ b/src/dotnet/APIView/APIViewWeb/Pages/Shared/_CommentThreadPartial.cshtml
@@ -19,6 +19,17 @@
                     {
                         <div id="@comment.CommentId" class="review-comment" data-comment-id="@comment.CommentId">
                             <div class="comment-actions">
+                                <form data-post-update="comments" asp-controller="Comments" asp-action="ToggleUpvote" method="post" asp-route-reviewId="@Model.ReviewId">
+                                    <input type="hidden" name="commentId" value="@comment.CommentId" />
+                                    <button type="submit" class="btn btn-light btn-sm btn-upvote" title="@string.Join(", ", comment.Upvotes) " active-if="@comment.Upvotes.Contains(User.GetGitHubLogin())">
+                                        @if (comment.Upvotes.Any())
+                                        {
+                                            @comment.Upvotes.Count
+                                        }
+                                        👍
+                                    </button>
+                                </form>
+
                                 @if (comment.Username == User.GetGitHubLogin())
                                 {
                                     <div class="dropdown show">
diff --git a/src/dotnet/APIView/APIViewWeb/Repositories/CommentsManager.cs b/src/dotnet/APIView/APIViewWeb/Repositories/CommentsManager.cs
index 3f2eb1e414..3a0949d1c1 100644
--- a/src/dotnet/APIView/APIViewWeb/Repositories/CommentsManager.cs
+++ b/src/dotnet/APIView/APIViewWeb/Repositories/CommentsManager.cs
@@ -85,6 +85,17 @@ public async Task UnresolveConversation(ClaimsPrincipal user, string reviewId, s
             }
         }
 
+        public async Task ToggleUpvoteAsync(ClaimsPrincipal user, string reviewId, string commentId)
+        {
+            var comment = await _commentsRepository.GetCommentAsync(reviewId, commentId);
+
+            if (comment.Upvotes.RemoveAll(u => u == user.GetGitHubLogin()) == 0)
+            {
+                comment.Upvotes.Add(user.GetGitHubLogin());
+            }
+
+            await _commentsRepository.UpsertCommentAsync(comment);
+        }
         private async Task AssertOwnerAsync(ClaimsPrincipal user, CommentModel commentModel)
         {
             var result = await _authorizationService.AuthorizeAsync(user, commentModel, new[] { CommentOwnerRequirement.Instance });