diff --git a/.env b/.env
index 72b464a3..d4b24e98 100644
--- a/.env
+++ b/.env
@@ -1,4 +1,3 @@
 NEXT_PUBLIC_SUPABASE_KEY=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.ewogICJyb2xlIjogImFub24iLAogICJpc3MiOiAic3VwYWJhc2UiLAogICJpYXQiOiAxNjk1Mzk4NDAwLAogICJleHAiOiAxODUzMjUxMjAwCn0.IldZY_FwoLs6cXpVyas9fR_F3uLDWSXu70s3Uyvn-dI
 NEXT_PUBLIC_SUPABASE_URL=https://sb.chibimello.com/
-NEXTAUTH_URL=https://nthumods.com
 NTHU_OAUTH_CLIENT_ID=nthumods
\ No newline at end of file
diff --git a/.env.development b/.env.development
new file mode 100644
index 00000000..00fb1f38
--- /dev/null
+++ b/.env.development
@@ -0,0 +1 @@
+NEXTAUTH_URL=http://localhost:3000
\ No newline at end of file
diff --git a/.env.production b/.env.production
new file mode 100644
index 00000000..5a1e129c
--- /dev/null
+++ b/.env.production
@@ -0,0 +1 @@
+NEXTAUTH_URL=https://nthumods.com
\ No newline at end of file
diff --git a/src/app/[lang]/cds/CdsCourseForm.tsx b/src/app/[lang]/cds/CdsCourseForm.tsx
index 142e0b64..2e399078 100644
--- a/src/app/[lang]/cds/CdsCourseForm.tsx
+++ b/src/app/[lang]/cds/CdsCourseForm.tsx
@@ -34,6 +34,7 @@ import { normalizeRoomName } from '@/const/venues';
 import { useMediaQuery } from 'usehooks-ts';
 import { useSettings } from '@/hooks/contexts/settings';
 import supabase, { CdsCourseDefinition } from '@/config/supabase';
+import { useSession } from 'next-auth/react';
 
 const createTimetableFromCdsCourses = (data: CdsCourseDefinition[], theme = 'tsinghuarian') => {
     const newTimetableData: CourseTimeslotData[] = [];
@@ -92,6 +93,10 @@ const CdsCoursesForm: FC<{
     const { timetableTheme } = useSettings();
     const [displayToggles, setDisplayToggles] = useState<{ [key: string]: boolean }>({});
     const scrollRef = useRef<HTMLDivElement>(null);
+
+    const session = useSession();
+    console.log(session)
+
     const emptyFilters = {
         textSearch: "",
         level: [1, 2, 3, 4],
diff --git a/src/app/api/auth/[...nextauth]/route.ts b/src/app/api/auth/[...nextauth]/route.ts
index 57219b4b..27329c74 100644
--- a/src/app/api/auth/[...nextauth]/route.ts
+++ b/src/app/api/auth/[...nextauth]/route.ts
@@ -1,44 +1,78 @@
 import NextAuth from "next-auth"
+import CredentialsProvider from "next-auth/providers/credentials"
 
 const handler = NextAuth({
-    providers: [
-        {
-            id: "nthu",
-            name: "NTHU",
-            type: "oauth",
-            clientId: process.env.NTHU_OAUTH_CLIENT_ID,
-            clientSecret: process.env.NTHU_OAUTH_SECRET_KEY,
-            authorization: {
-                url: "https://oauth.ccxp.nthu.edu.tw/v1.1/authorize.php",
-                params: { scope: "inschool email userid name" }
-            },
-            token: "https://oauth.nthumods.com/v1.1/token.php",
-            userinfo: "https://oauth.nthumods.com/v1.1/resource.php",
-            profile(profile) {
-              if(profile.success == false) throw new Error("Failed to fetch user profile");
-              return {
-                id: profile.userid,
-                inschool: profile.inschool,
-                name_zh: profile.name,
-                name_en: profile.name_en,
-                email: profile.email,
-              }
-            },
+  session: { strategy: "jwt" },
+  providers: [
+    process.env.NODE_ENV === "development"
+      ? CredentialsProvider({
+        id: "dev",
+        name: "Credentials",
+        credentials: {
+          username: {
+            label: "Username",
+            type: "text",
+            placeholder: "jsmith",
+          },
+          password: { label: "Password", type: "password" },
+        },
+        async authorize() {
+          return {
+            id: "b07901001",
+            inschool: true,
+            name: "王小明",
+            name_en: "Wang, Xiao-Ming",
+            email: "chewtzihwee@gmail.com"
           }
-    ],
-    callbacks: {
-      async jwt({ token, account, profile }) {
-        // Persist the OAuth access_token and or the user id to the token right after signin
-        if (account && profile) {
-          token.id = profile.id,
-          token.name = profile.name_zh,
-          token.name_en = profile.name_en,
-          token.inschool = profile.inschool,
-          token.email = profile.email
+        },
+      })
+      : {
+        id: "nthu",
+        name: "NTHU",
+        type: "oauth",
+        clientId: process.env.NTHU_OAUTH_CLIENT_ID,
+        clientSecret: process.env.NTHU_OAUTH_SECRET_KEY,
+        authorization: {
+          url: "https://oauth.ccxp.nthu.edu.tw/v1.1/authorize.php",
+          params: { scope: "inschool email userid name" }
+        },
+        token: "https://oauth.nthumods.com/v1.1/token.php",
+        userinfo: "https://oauth.nthumods.com/v1.1/resource.php",
+        profile(profile, tokens) {
+          if (profile.success == false) throw new Error("Failed to fetch user profile");
+          return {
+            id: profile.userid,
+            inschool: profile.inschool,
+            name_zh: profile.name,
+            name_en: profile.name_en,
+            email: profile.email,
+          }
+        },
+      }
+  ],
+  callbacks: {
+    async jwt({ token, account, profile }) {
+      if (process.env.NODE_ENV == 'development') {
+        return {
+          ...token,
+          id: "b07901001",
+          inschool: true,
+          name_zh: "王小明",
+          name_en: "Wang, Xiao-Ming",
+          email: "chewtzihwee@gmail.com"
         }
-        return token
-      }    
+      }
+
+      if (account && profile) {
+        token.id = profile.id,
+        token.name = profile.name_zh,
+        token.name_en = profile.name_en,
+        token.inschool = profile.inschool,
+        token.email = profile.email
+      }
+      return token
     }
+  }
 })
 
 export { handler as GET, handler as POST }