package controller

import (
	"net/http"
	"slices"
)

// Returns the request's original IP address, resolving the `x-forwarded-for`
// header if the request originates from a trusted proxy.
func ResolveIP(r *http.Request) string {
    trustedProxies := []string{ "10.4.20.69" }
    if slices.Contains(trustedProxies, r.RemoteAddr) {
        forwardedFor := r.Header.Get("x-forwarded-for")
        if len(forwardedFor) > 0 {
            return forwardedFor
        }
    }
    return r.RemoteAddr
}