Feat: Added Support for timeline preview

CHANGELOG.md

@@ -1,3 +1,9 @@
+### Version: 2.21.0
+#### Date: March-03-2025
+
+##### Feat: 
+- Added Support for Timeline Preview
+
 ### Version: 2.20.0
 #### Date: Dec-19-2024
 

Contentstack.Core/Configuration/LivePreviewConfig.cs

@@ -14,5 +14,7 @@ public class LivePreviewConfig
         internal string ContentTypeUID { get; set; }
         internal string EntryUID { get; set; }
         internal JObject PreviewResponse { get; set; }
+        internal string releaseId {get; set;}
+        internal string previewTimestamp {get; set;}
     }
 }

Contentstack.Core/ContentstackClient.cs

@@ -360,6 +360,10 @@ private async Task<JObject> GetLivePreviewData()
                 headerAll["authorization"] = this.LivePreviewConfig.ManagementToken;
             } else if (!string.IsNullOrEmpty(this.LivePreviewConfig.PreviewToken)) {
                 headerAll["preview_token"] = this.LivePreviewConfig.PreviewToken;
+            } else if (!string.IsNullOrEmpty(this.LivePreviewConfig.releaseId)) {
+                headerAll["release_id"] = this.LivePreviewConfig.releaseId;
+            } else if (!string.IsNullOrEmpty(this.LivePreviewConfig.previewTimestamp)) {
+                headerAll["preview_timestamp"] = this.LivePreviewConfig.previewTimestamp;
             } else {
                 throw new InvalidOperationException("Either ManagementToken or PreviewToken is required in LivePreviewConfig");
             }
@@ -576,6 +580,16 @@ public async Task LivePreviewQueryAsync(Dictionary<string, string> query)
                 string hash = null;
                 query.TryGetValue("live_preview", out hash);
                 this.LivePreviewConfig.LivePreview = hash;
+            } 
+            if (query.Keys.Contains("release_id")) {
+                string releaseId = null;
+                query.TryGetValue("release_id", out releaseId);
+                this.LivePreviewConfig.releaseId = releaseId;
+            }
+            if (query.Keys.Contains("preview_timestamp")) {
+                string previewTimestamp = null;
+                query.TryGetValue("preview_timestamp", out previewTimestamp);
+                this.LivePreviewConfig.previewTimestamp = previewTimestamp;
             }
             this.LivePreviewConfig.PreviewResponse = await GetLivePreviewData();
         }

Contentstack.Core/Internals/HttpRequestHandler.cs

@@ -48,7 +48,7 @@ public async Task<string> ProcessRequest(string Url, Dictionary<string, object>
             var request = (HttpWebRequest)WebRequest.Create(uri);
             request.Method = "GET";
             request.ContentType = "application/json";
-            request.Headers["x-user-agent"]="contentstack-delivery-dotnet/2.20.0";
+            request.Headers["x-user-agent"]="contentstack-delivery-dotnet/2.21.0";
             request.Timeout = timeout;
 
             if (proxy != null)

Contentstack.Core/Models/Entry.cs

@@ -1398,6 +1398,10 @@ public async Task<T> Fetch<T>()
                     headerAll["authorization"] = this.ContentTypeInstance.StackInstance.LivePreviewConfig.ManagementToken;
                 } else if (!string.IsNullOrEmpty(this.ContentTypeInstance.StackInstance.LivePreviewConfig.PreviewToken)) {
                     headerAll["preview_token"] = this.ContentTypeInstance.StackInstance.LivePreviewConfig.PreviewToken;
+                } else if (!string.IsNullOrEmpty(this.ContentTypeInstance.StackInstance.LivePreviewConfig.releaseId)) {
+                    headerAll["release_id"] = this.ContentTypeInstance.StackInstance.LivePreviewConfig.releaseId;
+                } else if (!string.IsNullOrEmpty(this.ContentTypeInstance.StackInstance.LivePreviewConfig.previewTimestamp)) {
+                    headerAll["preview_timestamp"] = this.ContentTypeInstance.StackInstance.LivePreviewConfig.previewTimestamp;
                 } else {
                     throw new InvalidOperationException("Either ManagementToken or PreviewToken is required in LivePreviewConfig");
                 }

Contentstack.Core/Models/Query.cs

@@ -1840,6 +1840,10 @@ private async Task<JObject> Exec()
                     headerAll["authorization"] = this.ContentTypeInstance.StackInstance.LivePreviewConfig.ManagementToken;
                 } else if (!string.IsNullOrEmpty(this.ContentTypeInstance.StackInstance.LivePreviewConfig.PreviewToken)) {
                     headerAll["preview_token"] = this.ContentTypeInstance.StackInstance.LivePreviewConfig.PreviewToken;
+                } else if (!string.IsNullOrEmpty(this.ContentTypeInstance.StackInstance.LivePreviewConfig.releaseId)) {
+                    headerAll["release_id"] = this.ContentTypeInstance.StackInstance.LivePreviewConfig.releaseId;
+                } else if (!string.IsNullOrEmpty(this.ContentTypeInstance.StackInstance.LivePreviewConfig.previewTimestamp)) {
+                    headerAll["preview_timestamp"] = this.ContentTypeInstance.StackInstance.LivePreviewConfig.previewTimestamp;
                 } else {
                     throw new InvalidOperationException("Either ManagementToken or PreviewToken is required in LivePreviewConfig");
                 }
@@ -1866,6 +1870,14 @@ private async Task<JObject> Exec()
             {
                 headerAll.Remove("preview_token");
             }
+            if (!isLivePreview && headerAll.ContainsKey("release_id"))
+            {
+                headerAll.Remove("release_id");
+            }
+            if (!isLivePreview && headerAll.ContainsKey("preview_timestamp"))
+            {
+                headerAll.Remove("preview_timestamp");
+            }
 
             mainJson.Add("environment", this.ContentTypeInstance.StackInstance.Config.Environment);
             if (QueryValueJson != null && QueryValueJson.Count > 0)

Directory.Build.props

@@ -1,5 +1,5 @@
 <Project>
   <PropertyGroup>
-    <Version>2.20.0</Version>
+    <Version>2.21.0</Version>
   </PropertyGroup>
 </Project>

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2012-2024 Contentstack (http://app.contentstack.com). All Rights Reserved
+Copyright (c) 2012-2025 Contentstack (http://app.contentstack.com). All Rights Reserved
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal