'use client'

import { useState } from 'react'
import { useRouter } from 'next/navigation'
import { Button } from '@/components/ui/button'
import { apiFetch } from '@/lib/csrf'

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

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault()
    setError('')
    setLoading(true)

    try {
      const res = await apiFetch('/api/auth/login', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ email, password }),
      })

      if (res.ok) {
        router.push('/')
        router.refresh()
      } else {
        const data = await res.json()
        setError(data.error ?? 'Login failed')
      }
    } catch {
      setError('Network error, please try again')
    } finally {
      setLoading(false)
    }
  }

  return (
    <div className="flex min-h-full items-center justify-center bg-zinc-50 dark:bg-zinc-950">
      <div className="w-full max-w-sm rounded-xl border border-zinc-200 bg-white p-8 shadow-sm dark:border-zinc-800 dark:bg-zinc-900">
        <h1 className="mb-6 text-xl font-semibold text-zinc-900 dark:text-zinc-50">
          Ops Dashboard
        </h1>

        <form onSubmit={handleSubmit} className="flex flex-col gap-4">
          <div className="flex flex-col gap-1.5">
            <label
              htmlFor="email"
              className="text-sm font-medium text-zinc-700 dark:text-zinc-300"
            >
              Email
            </label>
            <input
              id="email"
              type="email"
              autoComplete="email"
              required
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              className="rounded-lg border border-zinc-300 bg-white px-3 py-2 text-sm text-zinc-900 outline-none placeholder:text-zinc-400 focus:border-zinc-500 focus:ring-2 focus:ring-zinc-500/20 dark:border-zinc-700 dark:bg-zinc-800 dark:text-zinc-50 dark:placeholder:text-zinc-500 dark:focus:border-zinc-400"
              placeholder="admin@example.com"
            />
          </div>

          <div className="flex flex-col gap-1.5">
            <label
              htmlFor="password"
              className="text-sm font-medium text-zinc-700 dark:text-zinc-300"
            >
              Password
            </label>
            <input
              id="password"
              type="password"
              autoComplete="current-password"
              required
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              className="rounded-lg border border-zinc-300 bg-white px-3 py-2 text-sm text-zinc-900 outline-none placeholder:text-zinc-400 focus:border-zinc-500 focus:ring-2 focus:ring-zinc-500/20 dark:border-zinc-700 dark:bg-zinc-800 dark:text-zinc-50 dark:placeholder:text-zinc-500 dark:focus:border-zinc-400"
              placeholder="••••••••"
            />
          </div>

          {error && (
            <p className="text-sm text-red-600 dark:text-red-400">{error}</p>
          )}

          <Button type="submit" disabled={loading} className="mt-2 w-full">
            {loading ? 'Signing in…' : 'Sign in'}
          </Button>
        </form>
      </div>
    </div>
  )
}
