fixes to admin using client fetch

lib/api/platforms.ts

@@ -14,9 +14,6 @@ export type CreatePlatformDto = {
 
 export type UpdatePlatformDto = Partial<CreatePlatformDto>;
 
-const API_BASE =
-  process.env.NEXT_PUBLIC_API_BASE_URL ?? "";
-
 function normalizePlatform(raw: any): Platform {
   const id = Number(raw?.id);
   const key = String(raw?.key ?? "").trim();
@@ -33,9 +30,9 @@ function normalizePlatform(raw: any): Platform {
   return { id, key, label, isActive };
 }
 
-export async function fetchPlatforms(tokenHeaders: HeadersInit): Promise<Platform[]> {
-  const res = await fetch(`${API_BASE}/api/platforms`, {
-    headers: { ...tokenHeaders },
+export async function fetchPlatforms(_tokenHeaders: HeadersInit): Promise<Platform[]> {
+  const res = await fetch('/api/admin/platforms', {
+    credentials: 'include',
   });
 
   if (!res.ok) {
@@ -48,15 +45,15 @@ export async function fetchPlatforms(tokenHeaders: HeadersInit): Promise<Platfor
 }
 
 export async function createPlatform(
-  tokenHeaders: HeadersInit,
+  _tokenHeaders: HeadersInit,
   dto: CreatePlatformDto
 ): Promise<Platform> {
-  const res = await fetch(`${API_BASE}/api/platforms`, {
+  const res = await fetch('/api/admin/platforms', {
     method: "POST",
     headers: {
       "Content-Type": "application/json",
-      ...tokenHeaders,
     },
+    credentials: 'include',
     body: JSON.stringify(dto),
   });
 
@@ -69,17 +66,17 @@ export async function createPlatform(
 }
 
 export async function updatePlatform(
-  tokenHeaders: HeadersInit,
+  _tokenHeaders: HeadersInit,
   id: number,
   dto: UpdatePlatformDto
 ): Promise<Platform> {
-  const res = await fetch(`${API_BASE}/api/platforms/${id}`, {
+  const res = await fetch(`/api/admin/platforms/${id}`, {
     method: "PATCH",
     headers: {
       "Content-Type": "application/json",
-      ...tokenHeaders,
     },
-    body: JSON.stringify({ isActive: dto.isActive }),
+    credentials: 'include',
+    body: JSON.stringify(dto),
   });
 
   if (!res.ok) {
@@ -90,10 +87,10 @@ export async function updatePlatform(
   return normalizePlatform(await res.json());
 }
 
-export async function deletePlatform(tokenHeaders: HeadersInit, id: number): Promise<void> {
-  const res = await fetch(`${API_BASE}/api/platforms/${id}`, {
+export async function deletePlatform(_tokenHeaders: HeadersInit, id: number): Promise<void> {
+  const res = await fetch(`/api/admin/platforms/${id}`, {
     method: "DELETE",
-    headers: { ...tokenHeaders },
+    credentials: 'include',
   });
 
   if (!res.ok) {