From 4f002b851d38f9c1490d757e48e6b16108070c4c Mon Sep 17 00:00:00 2001
From: jericho <desautelsj@hotmail.com>
Date: Sun, 12 Nov 2023 20:05:36 -0500
Subject: [PATCH] Implement GetLinkedIssuesAsync in GitLab provider

---
 .../Provider/GitLabProvider.cs                | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/GitReleaseManager.Core/Provider/GitLabProvider.cs b/src/GitReleaseManager.Core/Provider/GitLabProvider.cs
index f16f0c48..0a4b5a4a 100644
--- a/src/GitReleaseManager.Core/Provider/GitLabProvider.cs
+++ b/src/GitReleaseManager.Core/Provider/GitLabProvider.cs
@@ -391,10 +391,23 @@ public string GetIssueType(Issue issue)
             return issue.IsPullRequest ? "Merge Request" : "Issue";
         }
 
-        public async Task<Issue> GetLinkedIssueAsync(string owner, string repository, int issueNumber)
+        public Task<IEnumerable<Issue>> GetLinkedIssuesAsync(string owner, string repository, Issue issue)
         {
-            // This is a placeholder until I figure out if GitLab has a something equivalent to GitHub's "linked issue"
-            throw new NotImplementedException();
+            return ExecuteAsync(() =>
+            {
+                if (issue.IsPullRequest)
+                {
+                    var closes = _gitLabClient.MergeRequests.ClosesIssues(issue.PublicNumber);
+                    var issues = _mapper.Map<IEnumerable<Issue>>(closes);
+                    return Task.FromResult(issues);
+                }
+                else
+                {
+                    var closedBy = _gitLabClient.Issues.ClosedBy(GetGitLabProjectId(owner, repository), issue.PublicNumber);
+                    var issues = _mapper.Map<IEnumerable<Issue>>(closedBy);
+                    return Task.FromResult(issues);
+                }
+            });
         }
 
         private int GetGitLabProjectId(string owner, string repository)