admin / Synapse-Sonar

"use client";

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

interface InviteInfo {
  username: string;
  name: string;
  roleLabel: string;
  tenantName: string;
}

export default function InviteAccept({ token }: { token: string }) {
  const router = useRouter();
  const [loading, setLoading] = useState(true);
  const [info, setInfo] = useState<InviteInfo | null>(null);
  const [invalid, setInvalid] = useState<string | null>(null);

  const [name, setName] = useState("");
  const [password, setPassword] = useState("");
  const [confirm, setConfirm] = useState("");
  const [submitting, setSubmitting] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const [done, setDone] = useState(false);

  useEffect(() => {
    fetch(`/api/invite/${token}`)
      .then(async (r) => {
        const data = await r.json();
        if (!r.ok) {
          setInvalid(data.error ?? "Invitation not found");
          return;
        }
        setInfo(data);
        setName(data.name ?? "");
      })
      .catch(() => setInvalid("Could not load invitation"))
      .finally(() => setLoading(false));
  }, [token]);

  const valid =
    password.length >= 10 && password === confirm && name.trim().length >= 1;

  const accept = async () => {
    setSubmitting(true);
    setError(null);
    try {
      const res = await fetch(`/api/invite/${token}`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ name, password }),
      });
      const data = await res.json();
      if (!res.ok) {
        setError(data.error ?? "Could not accept invitation");
        return;
      }
      setDone(true);
      setTimeout(
        () => router.push(`/login?u=${encodeURIComponent(data.username)}`),
        1400
      );
    } finally {
      setSubmitting(false);
    }
  };

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

        {loading ? (
          <p className="mt-6 text-center text-sm text-slate-400">Loading invitation…</p>
        ) : invalid ? (
          <div className="mt-6 text-center">
            <div className="mx-auto flex h-12 w-12 items-center justify-center rounded-full bg-rose-500/15 text-2xl text-rose-300">
              ✕
            </div>
            <p className="mt-3 text-sm text-slate-300">{invalid}</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>
          </div>
        ) : 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">
              Account activated. Redirecting you to sign in…
            </p>
          </div>
        ) : (
          info && (
            <div className="mt-6">
              <h1 className="text-center text-xl font-semibold text-slate-100">
                Join {info.tenantName}
              </h1>
              <p className="mt-1 text-center text-sm text-slate-400">
                You’ve been invited as{" "}
                <span className="text-slate-200">{info.roleLabel}</span>. Set a
                password to activate your account.
              </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">
                  <input
                    value={info.username}
                    disabled
                    className={`${inputCls} cursor-not-allowed font-mono text-slate-400`}
                  />
                </Field>
                <Field label="Your name">
                  <input
                    autoFocus
                    value={name}
                    onChange={(e) => setName(e.target.value)}
                    placeholder="Jane Doe"
                    className={inputCls}
                  />
                </Field>
                <Field label="Password" hint="Minimum 10 characters">
                  <input
                    type="password"
                    value={password}
                    onChange={(e) => setPassword(e.target.value)}
                    placeholder="••••••••••"
                    className={inputCls}
                  />
                </Field>
                <Field label="Confirm password">
                  <input
                    type="password"
                    value={confirm}
                    onChange={(e) => setConfirm(e.target.value)}
                    placeholder="••••••••••"
                    className={inputCls}
                  />
                  {confirm.length > 0 && password !== confirm && (
                    <span className="mt-1 block text-[11px] text-rose-400">
                      Passwords don’t match
                    </span>
                  )}
                </Field>
                <button
                  disabled={!valid || submitting}
                  onClick={accept}
                  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 ? "Activating…" : "Activate account"}
                </button>
              </div>
            </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 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">
      {children}
    </div>
  );
}