admin / Synapse-Sonar

"use client";

import { useEffect, useState } from "react";
import { useRouter } from "next/navigation";
import Logo from "@/components/Logo";

export default function SetupWizard() {
  const router = useRouter();
  const [checking, setChecking] = useState(true);
  const [alreadyDone, setAlreadyDone] = useState(false);
  const [submitting, setSubmitting] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const [done, setDone] = useState(false);

  const [form, setForm] = useState({
    username: "",
    name: "",
    password: "",
    confirm: "",
  });

  // Gate: if the system is already initialized, bounce to login.
  useEffect(() => {
    fetch("/api/setup")
      .then((r) => r.json())
      .then((d) => {
        if (!d.needsSetup) setAlreadyDone(true);
      })
      .finally(() => setChecking(false));
  }, []);

  const set = (k: keyof typeof form, v: string) => setForm((f) => ({ ...f, [k]: v }));

  const valid =
    /^[a-zA-Z0-9._-]{3,40}$/.test(form.username) &&
    form.password.length >= 10 &&
    form.password === form.confirm;

  const submit = async () => {
    setSubmitting(true);
    setError(null);
    try {
      const res = await fetch("/api/setup", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          username: form.username,
          name: form.name || undefined,
          password: form.password,
        }),
      });
      const data = await res.json();
      if (!res.ok) {
        setError(data.error ?? "Setup failed");
        return;
      }
      setDone(true);
    } catch {
      setError("Network error");
    } finally {
      setSubmitting(false);
    }
  };

  if (checking) return <Centered>Initializing…</Centered>;

  if (alreadyDone) {
    return (
      <Centered>
        <Card>
          <Brand />
          <h1 className="mt-4 text-center text-xl font-semibold text-slate-100">
            Already initialized
          </h1>
          <p className="mt-2 text-center text-sm text-slate-400">
            Synapse Sonar has already been set up on this instance.
          </p>
          <button
            onClick={() => router.push("/login")}
            className="mt-6 w-full rounded-lg bg-synapse-cyan px-4 py-2.5 text-sm font-semibold text-[#05080f] transition hover:brightness-110"
          >
            Go to sign in
          </button>
        </Card>
      </Centered>
    );
  }

  return (
    <Centered>
      <Card>
        <Brand />

        {done ? (
          <div className="mt-6 text-center">
            <div className="mx-auto flex h-12 w-12 items-center justify-center rounded-full bg-emerald-500/15 text-2xl text-emerald-300">
              ✓
            </div>
            <p className="mt-3 text-sm text-slate-300">
              Admin account{" "}
              <span className="font-mono text-synapse-cyan">{form.username}</span>{" "}
              created. Sign in to continue.
            </p>
            <button
              onClick={() => router.push("/login")}
              className="mt-6 w-full rounded-lg bg-synapse-cyan px-4 py-2.5 text-sm font-semibold text-[#05080f] transition hover:brightness-110"
            >
              Continue to sign in
            </button>
          </div>
        ) : (
          <>
            <h1 className="mt-6 text-center text-xl font-semibold text-slate-100">
              Create your admin account
            </h1>
            <p className="mt-1 text-center text-sm text-slate-400">
              Set a username and password to get started.
            </p>

            {error && (
              <div className="mt-4 rounded-lg border border-rose-500/40 bg-rose-500/10 px-3 py-2 text-xs text-rose-300">
                {error}
              </div>
            )}

            <div className="mt-5 space-y-4">
              <Field label="Username" hint="3–40 chars: letters, numbers, . _ -">
                <input
                  autoFocus
                  value={form.username}
                  onChange={(e) => set("username", e.target.value)}
                  placeholder="admin"
                  className={`${inputCls} font-mono`}
                />
              </Field>
              <Field label="Display name (optional)">
                <input
                  value={form.name}
                  onChange={(e) => set("name", e.target.value)}
                  placeholder="Jane Doe"
                  className={inputCls}
                />
              </Field>
              <Field label="Password" hint="Minimum 10 characters">
                <input
                  type="password"
                  value={form.password}
                  onChange={(e) => set("password", e.target.value)}
                  placeholder="••••••••••"
                  className={inputCls}
                />
              </Field>
              <Field label="Confirm password">
                <input
                  type="password"
                  value={form.confirm}
                  onChange={(e) => set("confirm", e.target.value)}
                  placeholder="••••••••••"
                  className={inputCls}
                />
                {form.confirm.length > 0 && form.password !== form.confirm && (
                  <span className="mt-1 block text-[11px] text-rose-400">
                    Passwords don’t match
                  </span>
                )}
              </Field>
              <button
                disabled={!valid || submitting}
                onClick={submit}
                className="w-full rounded-lg bg-synapse-cyan px-4 py-2.5 text-sm font-semibold text-[#05080f] transition hover:brightness-110 disabled:opacity-40"
              >
                {submitting ? "Creating…" : "Create admin account"}
              </button>
            </div>
          </>
        )}
      </Card>
    </Centered>
  );
}

const inputCls =
  "w-full rounded-lg border border-slate-600/60 bg-[#05080f] px-3 py-2 text-sm text-slate-100 outline-none transition placeholder:text-slate-600 focus:border-synapse-cyan";

function Field({ label, hint, children }: { label: string; hint?: string; children: React.ReactNode }) {
  return (
    <div>
      <label className="mb-1.5 block text-xs font-medium text-slate-300">{label}</label>
      {children}
      {hint && <span className="mt-1 block text-[11px] text-slate-500">{hint}</span>}
    </div>
  );
}

function Brand() {
  return (
    <div className="flex justify-center">
      <Logo variant="full" className="h-24 drop-shadow-[0_0_24px_rgba(59,130,246,0.35)]" />
    </div>
  );
}

function Card({ children }: { children: React.ReactNode }) {
  return (
    <div className="w-full max-w-md rounded-2xl border border-slate-700/60 bg-gradient-to-b from-[#1e293b] to-[#0f172a] p-8 shadow-2xl shadow-cyan-500/5">
      {children}
    </div>
  );
}

function Centered({ children }: { children: React.ReactNode }) {
  return (
    <div className="flex min-h-screen items-center justify-center bg-[#05080f] px-4 text-slate-300">
      {children}
    </div>
  );
}