Appwrite login page for Next.js

app/login/actions.ts

"use server";
import { cookies } from "next/headers";
import { AppwriteException } from "node-appwrite";
import { createAdminClient } from "@/lib/server/appwrite";

export async function signInWithEmail(email: string, password: string) {
  try {
    const { account } = await createAdminClient();
    const session = await account.createEmailPasswordSession({ email, password });
    (await cookies()).set("my-custom-session", session.secret, {
      path: "/",
      httpOnly: true,
      sameSite: "strict",
      secure: true,
      expires: new Date(session.expire),
    });
    return { ok: true as const };
  } catch (err) {
    if (err instanceof AppwriteException && err.type === "user_invalid_credentials") {
      return { ok: false as const, error: "Wrong email or password." };
    }
    return { ok: false as const, error: "Sign-in failed. Try again." };
  }
}

lib/server/appwrite.ts

import { Account, Client } from "node-appwrite";
import { cookies } from "next/headers";

const base = () =>
  new Client()
    .setEndpoint(process.env.NEXT_PUBLIC_APPWRITE_ENDPOINT!)
    .setProject(process.env.NEXT_PUBLIC_APPWRITE_PROJECT!);

// Signs people in. Needs an API key with the sessions.write scope.
export async function createAdminClient() {
  const client = base().setKey(process.env.NEXT_APPWRITE_KEY!);
  return { account: new Account(client) };
}

// Acts as the signed-in user, from the session cookie.
export async function createSessionClient() {
  const session = (await cookies()).get("my-custom-session");
  if (!session?.value) throw new Error("No session");
  const client = base().setSession(session.value);
  return { account: new Account(client) };
}

export async function getLoggedInUser() {
  try {
    const { account } = await createSessionClient();
    return await account.get();
  } catch {
    return null;
  }
}