linkwarden/pages/login.tsx

import AccentSubmitButton from "@/components/AccentSubmitButton";
import TextInput from "@/components/TextInput";
import CenteredForm from "@/layouts/CenteredForm";
import { signIn } from "next-auth/react";
import Link from "next/link";
import { useState, FormEvent } from "react";
import { toast } from "react-hot-toast";

interface FormData {
  username: string;
  password: string;
}

const emailEnabled = process.env.NEXT_PUBLIC_EMAIL_PROVIDER;
const keycloakEnabled = process.env.NEXT_PUBLIC_KEYCLOAK_ENABLED;
const authentikEnabled = process.env.NEXT_PUBLIC_AUTHENTIK_ENABLED;

export default function Login() {
  const [submitLoader, setSubmitLoader] = useState(false);

  const [form, setForm] = useState<FormData>({
    username: "",
    password: "",
  });

  async function loginUser(event: FormEvent<HTMLFormElement>) {
    event.preventDefault();

    if (form.username !== "" && form.password !== "") {
      setSubmitLoader(true);

      const load = toast.loading("Authenticating...");

      const res = await signIn("credentials", {
        username: form.username,
        password: form.password,
        redirect: false,
      });

      toast.dismiss(load);

      setSubmitLoader(false);

      if (!res?.ok) {
        toast.error("Invalid login.");
      }
    } else {
      toast.error("Please fill out all the fields.");
    }
  }

  async function loginUserKeycloak() {
    setSubmitLoader(true);

    const load = toast.loading("Authenticating...");

    const res = await signIn("keycloak", {});

    toast.dismiss(load);

    setSubmitLoader(false);
  }

  async function loginUserAuthentik() {
    setSubmitLoader(true);

    const load = toast.loading("Authenticating...");

    const res = await signIn("authentik", {});

    toast.dismiss(load);

    setSubmitLoader(false);
  }

  return (
    <CenteredForm text="Sign in to your account">
      <form onSubmit={loginUser}>
        <div className="p-4 mx-auto flex flex-col gap-3 justify-between max-w-[30rem] min-w-80 w-full bg-base-200 rounded-2xl shadow-md border border-neutral-content">
          {process.env.NEXT_PUBLIC_DISABLE_LOGIN !== "true" ? (
            <>
              <p className="text-3xl text-center font-extralight">
                Enter your credentials
              </p>

              <div className="divider my-0"></div>

              <div>
                <p className="text-sm w-fit font-semibold mb-1">
                  Username
                  {emailEnabled ? " or Email" : undefined}
                </p>

                <TextInput
                  autoFocus={true}
                  placeholder="johnny"
                  value={form.username}
                  className="bg-base-100"
                  onChange={(e) =>
                    setForm({ ...form, username: e.target.value })
                  }
                />
              </div>

              <div className="w-full">
                <p className="text-sm w-fit font-semibold mb-1">Password</p>

                <TextInput
                  type="password"
                  placeholder="••••••••••••••"
                  value={form.password}
                  className="bg-base-100"
                  onChange={(e) =>
                    setForm({ ...form, password: e.target.value })
                  }
                />
                {emailEnabled && (
                  <div className="w-fit ml-auto mt-1">
                    <Link
                      href={"/forgot"}
                      className="text-neutral font-semibold"
                    >
                      Forgot Password?
                    </Link>
                  </div>
                )}
              </div>

              <AccentSubmitButton
                type="submit"
                label="Login"
                className="w-full text-center"
                loading={submitLoader}
              />
            </>
          ) : undefined}
          {process.env.NEXT_PUBLIC_KEYCLOAK_ENABLED === "true" ? (
            <AccentSubmitButton
              type="button"
              onClick={loginUserKeycloak}
              label="Sign in with Keycloak"
              className="w-full text-center"
              loading={submitLoader}
            />
          ) : undefined}
          {process.env.NEXT_PUBLIC_AUTHENTIK_ENABLED === "true" ? (
            <AccentSubmitButton
              type="button"
              onClick={loginUserAuthentik}
              label="Sign in with Authentiks"
              className="w-full text-center"
              loading={submitLoader}
            />
          ) : undefined}
          {process.env.NEXT_PUBLIC_DISABLE_REGISTRATION ===
          "true" ? undefined : (
            <div className="flex items-baseline gap-1 justify-center">
              <p className="w-fit text-neutral">New here?</p>
              <Link href={"/register"} className="block font-semibold">
                Sign Up
              </Link>
            </div>
          )}
        </div>
      </form>
    </CenteredForm>
  );
}