feat(auth): implement callback route for session exchange and user retrieval, remove unused confirm route

Author: tyronejosee

src/app/(public)/auth/callback/route.ts

@@ -0,0 +1,25 @@
+import { NextResponse } from "next/server";
+import { createClient } from "@/lib/supabase/server";
+
+export async function GET(request: Request) {
+  const { searchParams, origin } = new URL(request.url);
+  const code = searchParams.get("code");
+  const next = searchParams.get("next") ?? "/";
+
+  if (code) {
+    const supabase = await createClient();
+    const { error } = await supabase.auth.exchangeCodeForSession(code);
+
+    if (!error) {
+      const forwardedHost = request.headers.get("x-forwarded-host");
+      const isLocalEnv = process.env.NODE_ENV === "development";
+
+      if (isLocalEnv) return NextResponse.redirect(`${origin}${next}`);
+      if (forwardedHost)
+        return NextResponse.redirect(`https://${forwardedHost}${next}`);
+      return NextResponse.redirect(`${origin}${next}`);
+    }
+  }
+
+  return NextResponse.redirect(`${origin}/auth/auth-code-error`);
+}

src/app/(public)/auth/confirm/route.ts

@@ -0,0 +1,30 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import { createClient } from "@/lib/supabase/client";
+
+export function useAuthUser() {
+  const [user, setUser] = useState(null);
+  const [loading, setLoading] = useState(true);
+  const supabase = createClient();
+
+  useEffect(() => {
+    const getUser = async () => {
+      const { data } = await supabase.auth.getUser();
+      setUser(data.user);
+      setLoading(false);
+    };
+
+    getUser();
+
+    const {
+      data: { subscription },
+    } = supabase.auth.onAuthStateChange((_event, session) => {
+      setUser(session?.user ?? null);
+    });
+
+    return () => subscription.unsubscribe();
+  }, []);
+
+  return { user, loading };
+}

src/hooks/use-auth-user.ts

@@ -3,6 +3,7 @@ import { NextResponse, type NextRequest } from "next/server";
 
 const publicRoutes = ["/", "/auth/login", "/resources"];
 const publicRoutePrefixes = [
+  "/auth/",
   "/resources/",
   "/languages/",
   "/frameworks-libraries/",