import { useState } from "react"
import { useRouter } from "next/router"

export default function SignIn() {
  const [username, setUsername] = useState("")
  const [password, setPassword] = useState("")
  const [error, setError] = useState("")
  const [loading, setLoading] = useState(false)
  const router = useRouter()

  const handleSubmit = async (e) => {
    e.preventDefault()
    setError("")
    setLoading(true)
    
    try {
      const res = await fetch("/api/auth/signin", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ username, password })
      })
      
      const data = await res.json()
      
      if (res.ok && data.ok) {
        // Set session cookie
        document.cookie = `next-auth.session-token=${data.token}; path=/; SameSite=Lax`
        router.push("/dashboard")
      } else {
        setError(data.error || "Erro ao entrar")
      }
    } catch (err) {
      setError("Erro de conexão")
    } finally {
      setLoading(false)
    }
  }

  return (
    <div className="min-h-screen bg-gray-50 flex items-center justify-center">
      <div className="bg-white p-8 rounded-lg shadow-md w-96">
        <h2 className="text-2xl font-bold mb-6">Entrar - 1000Apps</h2>
        
        {error && (
          <div className="bg-red-100 text-red-700 p-3 rounded mb-4">
            {error}
          </div>
        )}
        
        <form onSubmit={handleSubmit} className="space-y-4">
          <input
            type="text"
            placeholder="Nome de usuário"
            value={username}
            onChange={(e) => setUsername(e.target.value)}
            className="w-full p-2 border rounded"
            required
          />
          <input
            type="password"
            placeholder="Senha"
            value={password}
            onChange={(e) => setPassword(e.target.value)}
            className="w-full p-2 border rounded"
            required
          />
          <button 
            type="submit" 
            disabled={loading}
            className="w-full bg-blue-600 text-white py-2 rounded-lg disabled:opacity-50"
          >
            {loading ? "Entrando..." : "Entrar"}
          </button>
        </form>
        
        <p className="text-center mt-4 text-sm">
          Não tem conta?{" "}
          <a href="/signup" className="text-blue-600 hover:underline">
            Cadastrar
          </a>
        </p>
      </div>
    </div>
  )
}