'use client'

import { useState } from 'react'
import { Check, Trash2 } from 'lucide-react'
import { Alert } from '@/lib/types'
import { cn } from '@/lib/utils'
import { AlertIcon } from './AlertIcon'

interface AlertItemProps {
  alert: Alert
  onMarkRead: () => void
  onDelete: () => void
}

const severityStyles = {
  info: 'text-blue-400',
  warning: 'text-amber-400',
  danger: 'text-red-400',
}

function getRelativeTime(date: string): string {
  const now = new Date()
  const alertDate = new Date(date)
  const diffMs = now.getTime() - alertDate.getTime()
  const diffMins = Math.floor(diffMs / (1000 * 60))
  const diffHours = Math.floor(diffMs / (1000 * 60 * 60))
  const diffDays = Math.floor(diffMs / (1000 * 60 * 60 * 24))

  if (diffMins < 1) {
    return 'ahora'
  }
  if (diffMins < 60) {
    return `hace ${diffMins} min`
  }
  if (diffHours < 24) {
    return `hace ${diffHours} hora${diffHours > 1 ? 's' : ''}`
  }
  if (diffDays === 1) {
    return 'ayer'
  }
  if (diffDays < 7) {
    return `hace ${diffDays} días`
  }

  return alertDate.toLocaleDateString('es-AR', {
    day: 'numeric',
    month: 'short',
  })
}

export function AlertItem({ alert, onMarkRead, onDelete }: AlertItemProps) {
  const [showActions, setShowActions] = useState(false)
  const [isExiting, setIsExiting] = useState(false)

  const handleMarkRead = () => {
    setIsExiting(true)
    setTimeout(() => {
      onMarkRead()
    }, 200)
  }

  const handleDelete = () => {
    setIsExiting(true)
    setTimeout(() => {
      onDelete()
    }, 200)
  }

  return (
    <div
      className={cn(
        'group relative flex items-center gap-3 p-3 rounded-lg',
        'transition-all duration-200',
        'hover:bg-white/5',
        isExiting && 'opacity-0 -translate-x-4',
        !alert.isRead && 'bg-white/[0.02]'
      )}
      onMouseEnter={() => setShowActions(true)}
      onMouseLeave={() => setShowActions(false)}
      role="listitem"
    >
      {/* Unread indicator */}
      {!alert.isRead && (
        <span className="absolute left-1 top-1/2 -translate-y-1/2 h-2 w-2 rounded-full bg-blue-500" />
      )}

      {/* Icon */}
      <div
        className={cn(
          'flex-shrink-0',
          severityStyles[alert.severity],
          !alert.isRead && 'ml-3'
        )}
      >
        <AlertIcon type={alert.type} className="h-4 w-4" />
      </div>

      {/* Content */}
      <div className="flex-1 min-w-0">
        <p
          className={cn(
            'text-sm truncate',
            alert.isRead ? 'text-gray-400' : 'text-white font-medium'
          )}
        >
          {alert.title}
        </p>
        <p className="text-xs text-gray-500 mt-0.5">{getRelativeTime(alert.date)}</p>
      </div>

      {/* Actions */}
      <div
        className={cn(
          'flex items-center gap-1 transition-opacity duration-200',
          showActions ? 'opacity-100' : 'opacity-0'
        )}
      >
        {!alert.isRead && (
          <button
            onClick={handleMarkRead}
            className={cn(
              'p-1.5 rounded-md transition-colors',
              'text-gray-500 hover:text-green-400 hover:bg-green-400/10',
              'focus:outline-none focus:ring-2 focus:ring-green-400/20'
            )}
            title="Marcar como leída"
            aria-label="Marcar como leída"
          >
            <Check className="h-3.5 w-3.5" />
          </button>
        )}

        <button
          onClick={handleDelete}
          className={cn(
            'p-1.5 rounded-md transition-colors',
            'text-gray-500 hover:text-red-400 hover:bg-red-400/10',
            'focus:outline-none focus:ring-2 focus:ring-red-400/20'
          )}
          title="Eliminar"
          aria-label="Eliminar alerta"
        >
          <Trash2 className="h-3.5 w-3.5" />
        </button>
      </div>
    </div>
  )
}