import React, { useState } from 'react';
import { KeyRound, Loader2, X } from 'lucide-react';
import { HybridBackend } from '../services/backend.ts';
import { useToast } from '../contexts/ToastContext.tsx';

interface Props {
  forced?: boolean;       // troca obrigatória (1º login com senha temporária) — não pede senha atual nem deixa cancelar
  onClose?: () => void;
  onDone: () => void;
}

const inp = 'w-full border border-gray-200 rounded-xl px-3 py-2.5 text-sm font-medium text-gray-800 outline-none focus:border-teal-500 focus:ring-2 focus:ring-teal-100 transition-all';

export const ChangePasswordModal: React.FC<Props> = ({ forced, onClose, onDone }) => {
  const toast = useToast();
  const [atual, setAtual] = useState('');
  const [nova, setNova] = useState('');
  const [conf, setConf] = useState('');
  const [saving, setSaving] = useState(false);

  const submit = async () => {
    if (nova.length < 6) { toast.error('A NOVA SENHA DEVE TER NO MÍNIMO 6 CARACTERES.'); return; }
    if (nova !== conf) { toast.error('AS SENHAS NÃO COINCIDEM.'); return; }
    setSaving(true);
    try {
      const r = await HybridBackend.changeMyPassword(forced ? undefined : atual, nova);
      if (!r.success) { toast.error(r.message || 'ERRO AO TROCAR SENHA.'); return; }
      toast.success('SENHA ALTERADA COM SUCESSO!');
      onDone();
    } catch { toast.error('ERRO AO TROCAR SENHA.'); }
    finally { setSaving(false); }
  };

  return (
    <div className="fixed inset-0 bg-black/60 z-[85] flex items-center justify-center p-4 backdrop-blur-sm">
      <div className="bg-white rounded-2xl shadow-2xl w-full max-w-sm">
        <div className="px-6 py-4 border-b border-gray-100 flex items-center justify-between">
          <h3 className="font-black text-gray-800 uppercase text-sm flex items-center gap-2"><KeyRound size={16} className="text-teal-600" /> {forced ? 'Defina uma nova senha' : 'Trocar senha'}</h3>
          {!forced && onClose && <button onClick={onClose} className="p-1.5 hover:bg-gray-100 rounded-lg"><X size={18} /></button>}
        </div>
        <div className="p-6 space-y-3">
          {forced && (
            <p className="text-[11px] text-amber-700 bg-amber-50 border border-amber-100 rounded-xl p-3 font-bold uppercase leading-relaxed">
              Sua senha é temporária. Defina uma nova para continuar usando o sistema.
            </p>
          )}
          {!forced && <input type="password" placeholder="SENHA ATUAL" value={atual} onChange={e => setAtual(e.target.value)} className={inp} autoComplete="current-password" />}
          <input type="password" placeholder="NOVA SENHA" value={nova} onChange={e => setNova(e.target.value)} className={inp} autoComplete="new-password" />
          <input type="password" placeholder="CONFIRMAR NOVA SENHA" value={conf} onChange={e => setConf(e.target.value)} className={inp} autoComplete="new-password" />
          <div className="flex gap-2 pt-1">
            {!forced && onClose && <button onClick={onClose} className="px-4 py-2.5 border border-gray-200 rounded-xl text-[11px] font-black uppercase hover:bg-gray-50">Cancelar</button>}
            <button onClick={submit} disabled={saving} className="flex-1 py-2.5 bg-teal-600 hover:bg-teal-700 text-white rounded-xl text-[11px] font-black uppercase disabled:opacity-50 flex items-center justify-center gap-2">
              {saving ? <Loader2 size={13} className="animate-spin" /> : <KeyRound size={13} />} Salvar
            </button>
          </div>
        </div>
      </div>
    </div>
  );
};