"use client";
import React, { useState } from "react";
import Link from "next/link";
import Cookies from "js-cookie";
import { useRouter } from "next/navigation";
import withReactContent from "sweetalert2-react-content";
import Swal from "sweetalert2";
import { Input } from "../ui/input";
import { Button } from "../ui/button";
import { Label } from "../ui/label";
import { RadioGroup, RadioGroupItem } from "../ui/radio-group";

// ✅ import services
import { requestOTP, createUser } from "@/service/auth";

export default function SignUp() {
  const router = useRouter();
  const MySwal = withReactContent(Swal);

  const [step, setStep] = useState<"login" | "otp" | "form">("login");
  const [role, setRole] = useState("umum");
  const [email, setEmail] = useState("");
  const [otp, setOtp] = useState(["", "", "", "", "", ""]);

  // data user lengkap
  const [fullname, setFullname] = useState("");
  const [username, setUsername] = useState("");
  const [phoneNumber, setPhoneNumber] = useState("");
  const [address, setAddress] = useState("");
  const [dateOfBirth, setDateOfBirth] = useState("");
  const [genderType, setGenderType] = useState("male");
  const [password, setPassword] = useState("");
  const [workType, setWorkType] = useState("");

  // 🔹 Handle OTP Request
  const handleSendOtp = async (e: React.FormEvent) => {
    e.preventDefault();

    if (!email) {
      MySwal.fire("Error", "Email wajib diisi", "error");
      return;
    }

    try {
      const res = await requestOTP({ email, name: fullname || email });

      if (!res?.error) {
        MySwal.fire("Sukses", "OTP berhasil dikirim ke email anda", "success");
        setStep("otp");
      } else {
        MySwal.fire("Gagal", res.message || "Gagal mengirim OTP", "error");
      }
    } catch (err) {
      console.error("Error send otp:", err);
      MySwal.fire("Error", "Terjadi kesalahan server", "error");
    }
  };

  // 🔹 Handle OTP Verification (dummy → lanjut form)
  const handleVerifyOtp = async (e: React.FormEvent) => {
    e.preventDefault();
    const code = otp.join("");
    if (code.length !== 6) {
      MySwal.fire("Error", "OTP harus 6 digit", "error");
      return;
    }
    // TODO: ganti dengan verifyOTP API
    MySwal.fire("Sukses", "OTP diverifikasi!", "success");
    setStep("form"); // lanjut ke form lengkap
  };

  // 🔹 Handle Register ke API /users
  const handleRegister = async (e: React.FormEvent) => {
    e.preventDefault();

   const payload = {
  address,
  clientId: "web-app", // contoh default
  dateOfBirth,
  email,
  fullName: fullname,   // 🔥 fix disini (bukan fullname)
  genderType,
  identityGroup: "",
  identityGroupNumber: "",
  identityNumber: "",
  identityType: "",
  lastEducation: "",
  password,
  phoneNumber,
  userLevelId: 1,
  userRoleId: 1,
  username,
  workType,
};


    try {
      const res = await createUser(payload);
      if (!res?.error) {
        MySwal.fire("Sukses", "Akun berhasil dibuat!", "success");
        router.push("/login");
      } else {
        MySwal.fire("Error", res.message || "Gagal membuat akun", "error");
      }
    } catch (err) {
      console.error("Register error:", err);
      MySwal.fire("Error", "Terjadi kesalahan server", "error");
    }
  };

  const handleOtpChange = (index: number, value: string) => {
    if (!/^[0-9]?$/.test(value)) return;
    const newOtp = [...otp];
    newOtp[index] = value;
    setOtp(newOtp);
    const nextInput = document.getElementById(`otp-${index + 1}`);
    if (value && nextInput) nextInput.focus();
  };

  return (
    <div className="min-h-screen flex">
      {/* Left Side Logo */}
      <div className="hidden lg:flex lg:w-1/2 bg-white relative overflow-hidden">
        <div className="relative z-10 flex items-center justify-center w-full p-12">
          <div className="text-center">
            <Link href={"/"}>
              <img src="/Group.png" alt="Logo" className="max-w-2xl h-auto" />
            </Link>
            <div className="mt-8 text-black">
              <h2 className="text-2xl font-bold mb-2">Portal NetIdhub</h2>
              <p className="text-sm opacity-80">Platform beyond classic</p>
            </div>
          </div>
        </div>
      </div>

      {/* Right Side Form */}
      <div className="w-full lg:w-1/2 flex items-center justify-center p-8">
        <div className="w-full max-w-md">
          {/* Step 1: Kirim OTP */}
          {step === "login" && (
            <form onSubmit={handleSendOtp} className="space-y-4">
              <Input
                type="text"
                placeholder="Nama Lengkap"
                value={fullname}
                onChange={(e) => setFullname(e.target.value)}
              />
              <Input
                type="email"
                required
                placeholder="Email"
                value={email}
                onChange={(e) => setEmail(e.target.value)}
              />
              <Button type="submit" className="w-full bg-[#B89445] text-white">
                Kirim OTP
              </Button>
            </form>
          )}

          {/* Step 2: Verifikasi OTP */}
          {step === "otp" && (
            <form onSubmit={handleVerifyOtp} className="space-y-4 text-center">
              <h3 className="text-base font-semibold">Masukkan OTP</h3>
              <div className="flex justify-between mb-4">
                {otp.map((value, index) => (
                  <input
                    key={index}
                    id={`otp-${index}`}
                    type="text"
                    maxLength={1}
                    value={value}
                    onChange={(e) => handleOtpChange(index, e.target.value)}
                    className="w-10 h-12 text-center border rounded-md"
                  />
                ))}
              </div>
              <Button type="submit" className="w-full bg-[#B89445] text-white">
                Lanjut
              </Button>
            </form>
          )}

          {/* Step 3: Form Lengkap */}
          {step === "form" && (
            <form onSubmit={handleRegister} className="space-y-4">
              <Input
                type="text"
                placeholder="Nama Lengkap"
                value={fullname}
                onChange={(e) => setFullname(e.target.value)}
              />
              <Input
                type="text"
                placeholder="Username"
                value={username}
                onChange={(e) => setUsername(e.target.value)}
              />
              <Input
                type="text"
                placeholder="Nomor HP"
                value={phoneNumber}
                onChange={(e) => setPhoneNumber(e.target.value)}
              />
              <Input
                type="text"
                placeholder="Alamat"
                value={address}
                onChange={(e) => setAddress(e.target.value)}
              />
              <Input
                type="date"
                placeholder="Tanggal Lahir"
                value={dateOfBirth}
                onChange={(e) => setDateOfBirth(e.target.value)}
              />
              <select
                className="w-full border rounded-md p-2"
                value={genderType}
                onChange={(e) => setGenderType(e.target.value)}
              >
                <option value="male">Laki-laki</option>
                <option value="female">Perempuan</option>
              </select>
              <Input
                type="password"
                placeholder="Password"
                value={password}
                onChange={(e) => setPassword(e.target.value)}
              />
              <Input
                type="text"
                placeholder="Jenis Pekerjaan"
                value={workType}
                onChange={(e) => setWorkType(e.target.value)}
              />
              <Button type="submit" className="w-full bg-green-600 text-white">
                Daftar
              </Button>
            </form>
          )}
        </div>
      </div>
    </div>
  );
}