import { AlertCircle, ArrowRight, Eye, Lock, Mail, ShieldCheck } from 'lucide-react';
import { useAuthForm } from '../../hooks/useAuthForm';

export function AuthPanel() {
  const {
    mode,
    setMode,
    name,
    setName,
    email,
    setEmail,
    password,
    setPassword,
    emailError,
    passwordError,
    handleSubmit,
    continueAsGuest,
    loading,
    error,
  } = useAuthForm();

  const isSignup = mode === 'signup';

  return (
    <div
      className="w-full max-w-[430px] rounded-[22px] border border-white/16 bg-white/[0.075] p-6 shadow-[0_32px_80px_rgba(0,0,0,0.5),inset_0_1px_0_rgba(255,255,255,0.18)] backdrop-blur-2xl backdrop-saturate-150 sm:p-[34px]"
      style={{ colorScheme: 'dark' }}
    >
      <h2 className="m-0 mb-1.5 text-[23px] font-bold tracking-tight text-white">
        {isSignup ? 'Créer votre espace' : 'Bon retour'}
      </h2>
      <p className="m-0 mb-6 text-[13.5px] text-white/55">
        {isSignup ? 'Créez votre compte en quelques secondes.' : 'Déverrouillez votre coffre-fort.'}
      </p>

      <div className="mb-6 flex gap-1 rounded-xl border border-white/8 bg-black/28 p-1">
        <button
          type="button"
          onClick={() => setMode('login')}
          className={`flex-1 rounded-[9px] py-2.5 text-[13px] font-semibold transition-colors ${
            mode === 'login' ? 'bg-white/14 text-white' : 'bg-transparent text-white/55'
          }`}
        >
          Connexion
        </button>
        <button
          type="button"
          onClick={() => setMode('signup')}
          className={`flex-1 rounded-[9px] py-2.5 text-[13px] font-semibold transition-colors ${
            mode === 'signup' ? 'bg-white/14 text-white' : 'bg-transparent text-white/55'
          }`}
        >
          Créer un compte
        </button>
      </div>

      <form onSubmit={handleSubmit} className="flex flex-col gap-4">
        {error && (
          <div className="flex items-center gap-2 rounded-xl border border-danger/40 bg-danger/10 px-3.5 py-3 text-[13px] font-semibold text-danger">
            <AlertCircle size={15} />
            {error}
          </div>
        )}

        {isSignup && (
          <div className="flex flex-col gap-1.5">
            <label htmlFor="tc-name" className="text-[12.5px] font-semibold text-white/72">
              Nom complet
            </label>
            <input
              id="tc-name"
              name="name"
              type="text"
              autoComplete="name"
              value={name}
              onChange={(e) => setName(e.target.value)}
              placeholder="Leïla Barghouti"
              className="w-full rounded-xl border border-white/14 bg-black/26 px-[15px] py-3.5 text-[14.5px] text-white outline-none placeholder:text-white/34"
            />
          </div>
        )}

        <div className="flex flex-col gap-1.5">
          <label htmlFor="tc-email" className="text-[12.5px] font-semibold text-white/72">
            Adresse e-mail
          </label>
          <div className="relative flex items-center">
            <Mail size={16} className="absolute left-3.5 text-white/40" strokeWidth={1.8} />
            <input
              id="tc-email"
              name="email"
              type="email"
              autoComplete="email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              aria-invalid={emailError}
              aria-describedby="tc-email-err"
              placeholder="vous@domaine.tn"
              className={`w-full rounded-xl border bg-black/26 py-3.5 pl-10 pr-[15px] text-[14.5px] text-white outline-none placeholder:text-white/34 ${
                emailError ? 'border-danger' : 'border-white/14'
              }`}
            />
          </div>
          {emailError && (
            <span id="tc-email-err" className="flex items-center gap-1.5 text-xs text-danger">
              <AlertCircle size={13} />
              Saisissez une adresse e-mail valide.
            </span>
          )}
        </div>

        <div className="flex flex-col gap-1.5">
          <div className="flex items-baseline justify-between gap-3">
            <label htmlFor="tc-pass" className="text-[12.5px] font-semibold text-white/72">
              Mot de passe
            </label>
            <a href="#tc-pass" className="text-xs text-brand-soft hover:text-[#a8c2ff]">
              Oublié ?
            </a>
          </div>
          <div className="relative flex items-center">
            <Lock size={16} className="absolute left-3.5 text-white/40" strokeWidth={1.8} />
            <input
              id="tc-pass"
              name="password"
              type="password"
              autoComplete="current-password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              aria-invalid={passwordError}
              aria-describedby="tc-pass-err"
              placeholder="••••••••••"
              className={`w-full rounded-xl border bg-black/26 py-3.5 pl-10 pr-[15px] text-[14.5px] text-white outline-none placeholder:text-white/34 ${
                passwordError ? 'border-danger' : 'border-white/14'
              }`}
            />
          </div>
          {passwordError && (
            <span id="tc-pass-err" className="flex items-center gap-1.5 text-xs text-danger">
              <AlertCircle size={13} />
              Huit caractères minimum.
            </span>
          )}
        </div>

        <button
          type="submit"
          disabled={loading}
          className="mt-1 flex w-full items-center justify-center gap-2.5 rounded-xl bg-brand-gradient px-[18px] py-3.5 text-[14.5px] font-bold text-white shadow-[0_12px_30px_rgba(91,140,255,0.34)] transition-[filter] hover:brightness-110 disabled:opacity-70"
        >
          <span>{isSignup ? 'Créer mon compte' : 'Se connecter'}</span>
          <ArrowRight size={17} />
        </button>

        <button
          type="button"
          onClick={() => void continueAsGuest()}
          className="flex w-full items-center justify-center gap-2 rounded-xl border border-white/18 bg-white/6 px-[18px] py-[13px] text-[13.5px] font-semibold text-white transition-colors hover:bg-white/12"
        >
          <Eye size={16} strokeWidth={1.8} />
          Visiter en tant qu'invité
        </button>

        <div className="mt-1.5 flex items-center gap-2.5 border-t border-white/10 pt-4 text-xs text-white/48">
          <ShieldCheck size={14} className="text-success" strokeWidth={2} />
          Connexion chiffrée (HTTPS), mots de passe hachés (Argon2) — jamais stockés en clair.
        </div>
      </form>
    </div>
  );
}