package analytics

import "strings"

// botMarkers is the vendored user-agent list (spec §3.3): incomplete by
// nature, so the tab shows the bots count rather than pretending. Matched
// case-insensitively as substrings. An empty UA is a bot: no browser sends
// none.
var botMarkers = []string{
	"bot", "crawler", "spider", "slurp", "curl/", "wget/", "python-requests",
	"go-http-client", "headlesschrome", "phantomjs", "facebookexternalhit",
	"ahrefs", "semrush", "mj12", "dotbot", "petalbot", "bytespider", "gptbot",
	"claudebot", "ccbot", "applebot", "yandex", "baiduspider", "duckduckbot",
	"linkedinbot", "twitterbot", "discordbot", "telegrambot", "whatsapp",
	"pingdom", "uptimerobot", "statuscake", "site24x7", "newrelicpinger",
	"lighthouse", "pagespeed", "gtmetrix", "httpclient", "okhttp", "java/",
	"libwww", "scrapy", "node-fetch", "axios/", "postmanruntime", "insomnia",
}

// IsBot reports whether ua looks like an automated client.
func IsBot(ua string) bool {
	if ua == "" {
		return true
	}
	l := strings.ToLower(ua)
	for _, m := range botMarkers {
		if strings.Contains(l, m) {
			return true
		}
	}
	return false
}