fix(SW-663): Fixed leaking of live preview hash and removing preview pages

lib/graphql/request.ts

@@ -1,10 +1,10 @@
-import { ContentstackLivePreview } from "@contentstack/live-preview-utils"
 import fetchRetry from "fetch-retry"
 import { DocumentNode } from "graphql"
 import { GraphQLClient } from "graphql-request"
 import { cache } from "react"
 
 import { env } from "@/env/server"
+import { getPreviewHash, isPreview } from "@/lib/previewContext"
 
 import { request as _request } from "./_request"
 
@@ -12,12 +12,12 @@ import { Data } from "@/types/request"
 
 export async function request<T>(
   query: string | DocumentNode,
-  variables?: {},
+  variables?: Record<string, any>,
   params?: RequestInit
 ): Promise<Data<T>> {
-  const previewHash = ContentstackLivePreview.hash
-
-  const cmsUrl = previewHash ? env.CMS_PREVIEW_URL : env.CMS_URL
+  const shouldUsePreview = isPreview(variables?.uid)
+  const previewHash = getPreviewHash()
+  const cmsUrl = shouldUsePreview ? env.CMS_PREVIEW_URL : env.CMS_URL
 
   const client = new GraphQLClient(cmsUrl, {
     fetch: cache(async function (url: URL | RequestInfo, params?: RequestInit) {
@@ -31,5 +31,19 @@ export async function request<T>(
     }),
   })
 
-  return _request(client, query, variables, params)
+  const mergedParams =
+    shouldUsePreview && previewHash
+      ? {
+          ...params,
+          headers: {
+            ...params?.headers,
+            live_preview: previewHash,
+            preview_token: env.CMS_PREVIEW_TOKEN,
+          },
+          cache: undefined,
+          next: undefined,
+        }
+      : params
+
+  return _request(client, query, variables, mergedParams)
 }