"use client";

import { useState } from "react";
import { X, AlertCircle, CheckCircle, Loader, Eye, EyeOff } from "lucide-react";

interface CadastroSuperadminModalProps {
  isOpen: boolean;
  onClose: () => void;
  onSuccess?: () => void;
  currentCompanyId?: string;
}

// Funções de máscara
const maskCPF = (value: string): string => {
  return value
    .replace(/\D/g, "")
    .slice(0, 11)
    .replace(/(\d{3})(\d{3})(\d{3})(\d{2})/, "$1.$2.$3-$4")
    .replace(/(\d{3})(\d{3})(\d{3})$/, "$1.$2.$3")
    .replace(/(\d{3})(\d{3})$/, "$1.$2");
};

const maskPhone = (value: string): string => {
  return value
    .replace(/\D/g, "")
    .slice(0, 11)
    .replace(/(\d{2})(\d{4})(\d{4})/, "($1) $2-$3")
    .replace(/(\d{2})(\d{4})$/, "($1) $2");
};

export default function CadastroSuperadminModal({
  isOpen,
  onClose,
  onSuccess,
  currentCompanyId,
}: CadastroSuperadminModalProps) {
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState("");
  const [success, setSuccess] = useState(false);
  
  const [showPassword, setShowPassword] = useState(false);
  const [showConfirmPassword, setShowConfirmPassword] = useState(false);

  const [formData, setFormData] = useState({
    nome: "",
    email: "",
    telefone: "",
    senha: "",
    confirmaSenha: "",
    cpf: "",
    nomeSocial: "",
  });

  const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    const { name, value } = e.target;
    let formattedValue = value;

    // Aplicar máscaras
    if (name === "cpf") {
      formattedValue = maskCPF(value);
    } else if (name === "telefone") {
      formattedValue = maskPhone(value);
    }

    setFormData((prev) => ({
      ...prev,
      [name]: formattedValue,
    }));
  };

  const validarFormulario = (): boolean => {
    if (!formData.nome.trim()) {
      setError("Nome é obrigatório");
      return false;
    }
    if (!formData.email.trim()) {
      setError("Email é obrigatório");
      return false;
    }
    if (!formData.email.includes("@")) {
      setError("Email inválido");
      return false;
    }
    if (!formData.senha) {
      setError("Senha é obrigatória");
      return false;
    }
    if (formData.senha.length < 6) {
      setError("Senha deve ter pelo menos 6 caracteres");
      return false;
    }
    if (formData.senha !== formData.confirmaSenha) {
      setError("As senhas não coincidem");
      return false;
    }
    if (!formData.cpf.trim()) {
      setError("CPF é obrigatório");
      return false;
    }
    // Remover máscara para validar CPF
    const cpfLimpo = formData.cpf.replace(/\D/g, "");
    if (cpfLimpo.length !== 11) {
      setError("CPF deve ter 11 dígitos");
      return false;
    }
    return true;
  };

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setError("");

    if (!validarFormulario()) {
      return;
    }

    setLoading(true);

    try {
      // Remover máscaras antes de enviar
      const cpfLimpo = formData.cpf.replace(/\D/g, "");
      const telefoneLimpo = formData.telefone.replace(/\D/g, "");

      const payload = {
        name: formData.nome,
        username: formData.email,
        email: formData.email,
        password: formData.senha,
        cpf: cpfLimpo,
        superadmin: true,
        role: "superadmin",
        "nome-social": formData.nomeSocial || null,
        company_id: currentCompanyId || "00000000-0000-0000-0000-000000000000", // Fallback if no company provided, though might fail if foreign key invalid
      };

      // Obter token do localStorage para enviar autorização
      const token = localStorage.getItem('access_token');

      const response = await fetch(
        `${process.env.NEXT_PUBLIC_BFF_API_URL}/users`,
        {
          method: "POST",
          headers: {
            "accept": "application/json",
            "Content-Type": "application/json",
            ...(token && { "Authorization": `Bearer ${token}` }),
          },
          body: JSON.stringify(payload),
        }
      );

      if (response.ok) {
        setSuccess(true);
        setFormData({
          nome: "",
          email: "",
          telefone: "",
          senha: "",
          confirmaSenha: "",
          cpf: "",
          nomeSocial: "",
        });

        // Fechar modal após 2 segundos
        setTimeout(() => {
          setSuccess(false);
          onClose();
          onSuccess?.();
        }, 2000);
      } else {
        const errorData = await response.json().catch(() => ({}));
        setError(
          errorData.message ||
            errorData.error ||
            `Erro ao criar superadmin (${response.status})`
        );
      }
    } catch (err) {
      console.error("Erro ao criar superadmin:", err);
      setError("Erro ao conectar com o servidor");
    } finally {
      setLoading(false);
    }
  };

  if (!isOpen) return null;

  return (
    <div className="fixed inset-0 bg-black/30 backdrop-blur-md flex items-center justify-center z-50 p-4">
      <div className="bg-white rounded-lg shadow-2xl max-w-md w-full max-h-[90vh] overflow-y-auto">
        {/* Header */}
        <div className="flex items-center justify-between p-6 border-b border-gray-200">
          <h2 className="text-xl font-semibold text-gray-900">
            Cadastrar Superadmin
          </h2>
          <button
            onClick={onClose}
            className="text-gray-400 hover:text-gray-600 transition-colors"
          >
            <X className="w-6 h-6" />
          </button>
        </div>

        {/* Conteúdo */}
        <div className="p-6">
          {success ? (
            <div className="space-y-4 text-center py-8">
              <div className="w-16 h-16 bg-green-100 rounded-full flex items-center justify-center mx-auto">
                <CheckCircle className="w-8 h-8 text-green-600" />
              </div>
              <div>
                <h3 className="text-lg font-medium text-gray-900 mb-2">
                  Sucesso!
                </h3>
                <p className="text-gray-600 text-sm">
                  Superadmin cadastrado com sucesso
                </p>
              </div>
            </div>
          ) : (
            <form onSubmit={handleSubmit} className="space-y-4">
              {/* Mensagem de Erro */}
              {error && (
                <div className="bg-red-50 border border-red-200 rounded-lg p-4 flex gap-3">
                  <AlertCircle className="w-5 h-5 text-red-600 flex-shrink-0" />
                  <p className="text-sm text-red-700">{error}</p>
                </div>
              )}

              {/* Nome */}
              <div>
                <label className="block text-sm font-medium text-gray-700 mb-2">
                  Nome *
                </label>
                <input
                  type="text"
                  name="nome"
                  value={formData.nome}
                  onChange={handleChange}
                  placeholder="Nome completo"
                  disabled={loading}
                  className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:bg-gray-100"
                />
              </div>

              {/* Email */}
              <div>
                <label className="block text-sm font-medium text-gray-700 mb-2">
                  Email *
                </label>
                <input
                  type="email"
                  name="email"
                  value={formData.email}
                  onChange={handleChange}
                  placeholder="email@example.com"
                  disabled={loading}
                  className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:bg-gray-100"
                />
              </div>

              {/* CPF */}
              <div>
                <label className="block text-sm font-medium text-gray-700 mb-2">
                  CPF *
                </label>
                <input
                  type="text"
                  name="cpf"
                  value={formData.cpf}
                  onChange={handleChange}
                  placeholder="000.000.000-00"
                  disabled={loading}
                  className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:bg-gray-100"
                />
              </div>

              {/* Telefone */}
              <div>
                <label className="block text-sm font-medium text-gray-700 mb-2">
                  Telefone
                </label>
                <input
                  type="tel"
                  name="telefone"
                  value={formData.telefone}
                  onChange={handleChange}
                  placeholder="(11) 9999-9999"
                  disabled={loading}
                  className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:bg-gray-100"
                />
              </div>

              {/* Nome Social */}
              <div>
                <label className="block text-sm font-medium text-gray-700 mb-2">
                  Nome Social
                </label>
                <input
                  type="text"
                  name="nomeSocial"
                  value={formData.nomeSocial}
                  onChange={handleChange}
                  placeholder="Nome social (opcional)"
                  disabled={loading}
                  className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:bg-gray-100"
                />
              </div>

              {/* Senha */}
              <div>
                <label className="block text-sm font-medium text-gray-700 mb-2">
                  Senha *
                </label>
                <div className="relative">
                  <input
                    type={showPassword ? "text" : "password"}
                    name="senha"
                    value={formData.senha}
                    onChange={handleChange}
                    placeholder="Digite a senha"
                    disabled={loading}
                    className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:bg-gray-100 pr-10"
                  />
                  <button
                    type="button"
                    onClick={() => setShowPassword(!showPassword)}
                    className="absolute right-3 top-1/2 -translate-y-1/2 text-gray-400 hover:text-gray-600 focus:outline-none"
                  >
                    {showPassword ? (
                      <EyeOff className="w-5 h-5" />
                    ) : (
                      <Eye className="w-5 h-5" />
                    )}
                  </button>
                </div>
              </div>

              {/* Confirmar Senha */}
              <div>
                <label className="block text-sm font-medium text-gray-700 mb-2">
                  Confirmar Senha *
                </label>
                <div className="relative">
                  <input
                    type={showConfirmPassword ? "text" : "password"}
                    name="confirmaSenha"
                    value={formData.confirmaSenha}
                    onChange={handleChange}
                    placeholder="Confirme a senha"
                    disabled={loading}
                    className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:bg-gray-100 pr-10"
                  />
                  <button
                    type="button"
                    onClick={() => setShowConfirmPassword(!showConfirmPassword)}
                    className="absolute right-3 top-1/2 -translate-y-1/2 text-gray-400 hover:text-gray-600 focus:outline-none"
                  >
                    {showConfirmPassword ? (
                      <EyeOff className="w-5 h-5" />
                    ) : (
                      <Eye className="w-5 h-5" />
                    )}
                  </button>
                </div>
              </div>

              {/* Botões */}
              <div className="flex gap-3 pt-4">
                <button
                  type="button"
                  onClick={onClose}
                  disabled={loading}
                  className="flex-1 px-4 py-2 border border-gray-300 rounded-lg text-gray-700 hover:bg-gray-50 transition-colors disabled:opacity-50"
                >
                  Cancelar
                </button>
                <button
                  type="submit"
                  disabled={loading}
                  className="flex-1 px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition-colors disabled:opacity-50 flex items-center justify-center gap-2"
                >
                  {loading && <Loader className="w-4 h-4 animate-spin" />}
                  {loading ? "Cadastrando..." : "Cadastrar"}
                </button>
              </div>
            </form>
          )}
        </div>
      </div>
    </div>
  );
}