'use client'

import { useState } from 'react'
import { signIn } from 'next-auth/react'
import { useRouter } from 'next/navigation'
import { Flame } from 'lucide-react'

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

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault()
    setLoading(true)
    setError('')

    const result = await signIn('credentials', {
      redirect: false,
      email,
      password,
    })

    if (result?.error) {
      setError('Geçersiz e-posta veya şifre')
      setLoading(false)
    } else {
      router.push('/admin')
      router.refresh()
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center px-4">
      <div className="w-full max-w-md bg-card rounded-xl shadow-lg border border-border/50 overflow-hidden">
        <div className="p-8">
          <div className="text-center mb-8 flex flex-col items-center">
            <Flame className="w-12 h-12 text-primary mb-4" />
            <h1 className="text-2xl font-bold uppercase tracking-wider text-foreground">Teras Steakhouse</h1>
            <p className="text-sm text-muted-foreground mt-2 uppercase tracking-wide">Yönetici Girişi</p>
          </div>

          {error && (
            <div className="bg-destructive/10 text-destructive p-3 rounded-md text-sm mb-6 border border-destructive/20">
              {error}
            </div>
          )}

          <form onSubmit={handleSubmit} className="space-y-5">
            <div>
              <label className="block text-sm font-medium text-foreground mb-1 uppercase tracking-wide" htmlFor="email">
                E-posta
              </label>
              <input
                id="email"
                type="email"
                value={email}
                onChange={(e) => setEmail(e.target.value)}
                required
                className="w-full px-4 py-3 border border-border rounded-md focus:ring-2 focus:ring-primary/50 focus:border-primary/50 bg-background text-foreground transition-colors outline-none"
                placeholder="admin@ayris.tech"
              />
            </div>
            <div>
              <label className="block text-sm font-medium text-foreground mb-1 uppercase tracking-wide" htmlFor="password">
                Şifre
              </label>
              <input
                id="password"
                type="password"
                value={password}
                onChange={(e) => setPassword(e.target.value)}
                required
                className="w-full px-4 py-3 border border-border rounded-md focus:ring-2 focus:ring-primary/50 focus:border-primary/50 bg-background text-foreground transition-colors outline-none"
                placeholder="••••••••"
              />
            </div>
            <button
              type="submit"
              disabled={loading}
              className="w-full bg-primary hover:bg-primary/90 text-primary-foreground font-bold py-3 px-4 rounded-md transition-colors uppercase tracking-wider disabled:opacity-70 disabled:cursor-not-allowed mt-2"
            >
              {loading ? 'Giriş yapılıyor...' : 'Giriş Yap'}
            </button>
          </form>
          
          <div className="mt-8 pt-6 border-t border-border/50 text-center text-xs text-muted-foreground">
            Demo: admin@ayris.tech / admin
          </div>
        </div>
      </div>
    </div>
  )
}