// src/lib/rateLimit.ts
const rateLimits = new Map<string, { count: number; resetTime: number }>()

export function rateLimit(
  ip: string,
  limit: number = 100,
  windowMs: number = 60000 // 1 minute
): { success: boolean; remaining: number; resetTime: number } {
  const now = Date.now()
  const record = rateLimits.get(ip)

  if (!record || now > record.resetTime) {
    rateLimits.set(ip, { count: 1, resetTime: now + windowMs })
    return { success: true, remaining: limit - 1, resetTime: now + windowMs }
  }

  if (record.count >= limit) {
    return { success: false, remaining: 0, resetTime: record.resetTime }
  }

  record.count++
  return { success: true, remaining: limit - record.count, resetTime: record.resetTime }
}