package recon

import "math/rand"

// userAgents is a curated pool of 10 realistic desktop/mobile browser
// User-Agent strings used when Config.Stealth is enabled. The pool covers
// Chrome/Firefox/Safari/Edge across Windows, macOS, Linux, iOS, and Android
// to avoid UA-fingerprint blocking by OSINT targets.
var userAgents = []string{
	"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
	"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
	"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
	"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0",
	"Mozilla/5.0 (Macintosh; Intel Mac OS X 14.2; rv:121.0) Gecko/20100101 Firefox/121.0",
	"Mozilla/5.0 (X11; Linux x86_64; rv:121.0) Gecko/20100101 Firefox/121.0",
	"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Safari/605.1.15",
	"Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.1",
	"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.2210.61",
	"Mozilla/5.0 (Linux; Android 14; Pixel 8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Mobile Safari/537.36",
}

// RandomUserAgent returns a pseudo-random browser User-Agent from the pool.
// Used when Config.Stealth is true to rotate UA per outbound request.
func RandomUserAgent() string {
	return userAgents[rand.Intn(len(userAgents))]
}

// StealthHeaders returns a minimal header map carrying a rotated User-Agent
// plus a stable Accept-Language. Recon sources merge this into their
// outbound requests when stealth mode is enabled.
func StealthHeaders() map[string]string {
	return map[string]string{
		"User-Agent":      RandomUserAgent(),
		"Accept-Language": "en-US,en;q=0.9",
	}
}