'use client'

import { useState } from 'react'
import Link from 'next/link'
import { useRouter } from 'next/navigation'
import { signIn } from 'next-auth/react'

export default function RegisterPage() {
  const router = useRouter()
  const [name, setName] = useState('')
  const [email, setEmail] = useState('')
  const [password, setPassword] = useState('')
  const [loading, setLoading] = useState(false)
  const [googleLoading, setGoogleLoading] = useState(false)
  const [error, setError] = useState('')

  const handleRegister = async (e: React.FormEvent) => {
    e.preventDefault()
    setLoading(true)
    setError('')
    try {
      const res = await fetch('/api/auth/register', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ name, email, password }),
      })
      const data = await res.json()
      if (!res.ok) throw new Error(data.error || 'Registrasi gagal')
      // Auto login after register
      await signIn('credentials', { email, password, callbackUrl: '/dashboard' })
    } catch (err: any) {
      setError(err.message)
      setLoading(false)
    }
  }

  return (
    <main style={{
      minHeight: '100vh',
      background: '#0a0a0f',
      display: 'flex',
      alignItems: 'center',
      justifyContent: 'center',
      padding: '24px',
    }}>
      <div style={{ width: '100%', maxWidth: '420px' }}>
        <div style={{ textAlign: 'center', marginBottom: '40px' }}>
          <Link href="/" style={{ textDecoration: 'none', display: 'inline-flex', alignItems: 'center', gap: '10px' }}>
            <div style={{ width: 44, height: 44, background: 'linear-gradient(135deg, #f59e0b, #d97706)', borderRadius: '12px', display: 'flex', alignItems: 'center', justifyContent: 'center', fontSize: '22px' }}>⚡</div>
            <span className="font-game" style={{ fontSize: '24px', fontWeight: 700, color: '#f1f5f9' }}>Amane<span style={{ color: '#f59e0b' }}>Nime</span></span>
          </Link>
          <h1 style={{ marginTop: '24px', fontSize: '24px', fontWeight: 700, color: '#f1f5f9', marginBottom: '8px' }}>Buat Akun Baru</h1>
          <p style={{ color: '#64748b', fontSize: '14px' }}>Bergabung dan mulai top up sekarang 🚀</p>
        </div>

        <div className="card" style={{ padding: '32px' }}>
          <button onClick={() => { setGoogleLoading(true); signIn('google', { callbackUrl: '/dashboard' }) }}
            disabled={googleLoading} className="btn btn-secondary"
            style={{ width: '100%', padding: '12px', marginBottom: '24px' }}>
            {googleLoading ? <span className="spinner" /> : (
              <>
                <svg width="18" height="18" viewBox="0 0 24 24">
                  <path fill="#4285F4" d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"/>
                  <path fill="#34A853" d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"/>
                  <path fill="#FBBC05" d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"/>
                  <path fill="#EA4335" d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"/>
                </svg>
                Daftar dengan Google
              </>
            )}
          </button>

          <div style={{ display: 'flex', alignItems: 'center', gap: '12px', marginBottom: '24px' }}>
            <hr style={{ flex: 1, border: 'none', borderTop: '1px solid rgba(255,255,255,0.06)' }} />
            <span style={{ color: '#475569', fontSize: '12px' }}>atau</span>
            <hr style={{ flex: 1, border: 'none', borderTop: '1px solid rgba(255,255,255,0.06)' }} />
          </div>

          <form onSubmit={handleRegister}>
            {error && (
              <div style={{ padding: '12px 16px', background: 'rgba(239,68,68,0.1)', border: '1px solid rgba(239,68,68,0.2)', borderRadius: '10px', color: '#ef4444', fontSize: '13px', marginBottom: '16px' }}>
                ❌ {error}
              </div>
            )}
            <div style={{ marginBottom: '16px' }}>
              <label className="label">Nama Lengkap</label>
              <input className="input" placeholder="Nama kamu" value={name} onChange={e => setName(e.target.value)} required />
            </div>
            <div style={{ marginBottom: '16px' }}>
              <label className="label">Email</label>
              <input className="input" type="email" placeholder="nama@email.com" value={email} onChange={e => setEmail(e.target.value)} required />
            </div>
            <div style={{ marginBottom: '24px' }}>
              <label className="label">Password</label>
              <input className="input" type="password" placeholder="Min. 8 karakter" value={password} onChange={e => setPassword(e.target.value)} minLength={8} required />
            </div>
            <button type="submit" className="btn btn-primary" style={{ width: '100%', padding: '13px', fontSize: '15px' }} disabled={loading}>
              {loading ? <><span className="spinner" /> Mendaftar...</> : 'Daftar Sekarang'}
            </button>
          </form>

          <p style={{ textAlign: 'center', marginTop: '20px', fontSize: '14px', color: '#64748b' }}>
            Sudah punya akun?{' '}
            <Link href="/auth/login" style={{ color: '#f59e0b', textDecoration: 'none', fontWeight: 600 }}>Masuk</Link>
          </p>
        </div>
      </div>
    </main>
  )
}
