Bot Detection for
Gaming & Esports

package anticheat

import (
    "encoding/json"
    "fmt"
    "net/http"
)

type RiskResult struct {
    TrustScore int    `json:"trust_score"`
    IPType     string `json:"ip_type"`
    IsVPN      bool   `json:"is_vpn"`
    IsProxy    bool   `json:"is_proxy"`
    ASN        string `json:"asn_name"`
    RiskLevel  string `json:"risk_level"`
}

func CheckPlayerIP(ip string) (*RiskResult, error) {
    url := fmt.Sprintf(
        "https://api.ipasis.com/check?ip=%s", ip,
    )
    req, _ := http.NewRequest("GET", url, nil)
    req.Header.Set("X-API-Key", apiKey)

    resp, err := http.DefaultClient.Do(req)
    if err != nil {
        return nil, err
    }
    defer resp.Body.Close()

    var risk RiskResult
    json.NewDecoder(resp.Body).Decode(&risk)
    return &risk, nil
}

func OnPlayerConnect(playerID, ip string) Action {
    risk, err := CheckPlayerIP(ip)
    if err != nil {
        return ActionAllow // fail open
    }

    // Datacenter IP = likely bot farm
    if risk.IPType == "datacenter" {
        LogSuspicious(playerID, ip, risk)
        return ActionRequireVerification
    }

    // Known VPN/proxy = flag for review
    if risk.IsVPN || risk.IsProxy {
        return ActionFlagForReview
    }

    return ActionAllow
}