From 0c4c5c5d1beede0e805b7627b49181fc2276de34 Mon Sep 17 00:00:00 2001
From: Neil Wang <neil@scrumaster.org>
Date: Mon, 6 Nov 2023 19:26:53 +0800
Subject: [PATCH] Add reopenIssue api in IssuesApi (#1043)

---
 src/main/java/org/gitlab4j/api/IssuesApi.java | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/main/java/org/gitlab4j/api/IssuesApi.java b/src/main/java/org/gitlab4j/api/IssuesApi.java
index 1324954fd..6a67c6f41 100644
--- a/src/main/java/org/gitlab4j/api/IssuesApi.java
+++ b/src/main/java/org/gitlab4j/api/IssuesApi.java
@@ -488,6 +488,27 @@ public Issue closeIssue(Object projectIdOrPath, Long issueIid) throws GitLabApiE
         return (response.readEntity(Issue.class));
     }
 
+    /**
+     * Reopens an existing project issue.
+     *
+     * <pre><code>GitLab Endpoint: PUT /projects/:id/issues/:issue_iid</code></pre>
+     *
+     * @param projectIdOrPath the project in the form of an Long(ID), String(path), or Project instance, required
+     * @param issueIid the issue IID to update, required
+     * @return an instance of the updated Issue
+     * @throws GitLabApiException if any exception occurs
+     */
+    public Issue reopenIssue(Object projectIdOrPath, Long issueIid) throws GitLabApiException {
+
+        if (issueIid == null) {
+            throw new RuntimeException("issue IID cannot be null");
+        }
+
+        GitLabApiForm formData = new GitLabApiForm().withParam("state_event", StateEvent.REOPEN);
+        Response response = put(Response.Status.OK, formData.asMap(), "projects", getProjectIdOrPath(projectIdOrPath), "issues", issueIid);
+        return (response.readEntity(Issue.class));
+    }
+
     /**
      * Updates an existing project issue. This call can also be used to mark an issue as closed.
      *