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feat: add country-level subscription risk controls

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JetSprow
2026-04-29 15:40:50 +10:00
parent 40ca3e27ad
commit 086934198a
8 changed files with 81 additions and 11 deletions
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41
src/services/subscription-risk.ts
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@@ -22,6 +22,8 @@ type SubscriptionRiskConfig = Pick<
| "subscriptionRiskCitySuspend"
| "subscriptionRiskRegionWarning"
| "subscriptionRiskRegionSuspend"
| "subscriptionRiskCountryWarning"
| "subscriptionRiskCountrySuspend"
>;
interface RecordSubscriptionAccessInput {
@@ -51,6 +53,8 @@ interface RiskThresholds {
citySuspend: number;
regionWarning: number;
regionSuspend: number;
countryWarning: number;
countrySuspend: number;
autoSuspend: boolean;
}
@@ -89,15 +93,19 @@ function riskMessage(options: {
decision: RiskDecision;
kind: SubscriptionAccessKind;
ip: string;
cityCount: number;
countryCount: number;
regionCount: number;
cityLabels: string[];
cityCount: number;
countryLabels: string[];
regionLabels: string[];
cityLabels: string[];
}) {
const scope = getScopeLabel(options.kind);
const locationSummary = options.decision.reason.startsWith("REGION")
? `${options.regionCount} 个省/地区：${formatKeyPreview(options.regionLabels)}`
: `${options.cityCount} 个城市：${formatKeyPreview(options.cityLabels)}`;
const locationSummary = options.decision.reason.startsWith("COUNTRY")
? `${options.countryCount} 个国家/地区：${formatKeyPreview(options.countryLabels)}`
: options.decision.reason.startsWith("REGION")
? `${options.regionCount} 个省/地区：${formatKeyPreview(options.regionLabels)}`
: `${options.cityCount} 个城市：${formatKeyPreview(options.cityLabels)}`;
if (options.decision.level === "SUSPENDED") {
return `${scope}访问地区异常，24 小时内出现 ${locationSummary}，最近 IP ${options.ip}，已自动暂停。`;
@@ -106,13 +114,24 @@ function riskMessage(options: {
return `${scope}访问地区异常，24 小时内出现 ${locationSummary}，最近 IP ${options.ip}，已记录警告。`;
}
function decideRisk(cityCount: number, regionCount: number, thresholds: RiskThresholds): RiskDecision | null {
function decideRisk(
countryCount: number,
regionCount: number,
cityCount: number,
thresholds: RiskThresholds,
): RiskDecision | null {
if (thresholds.autoSuspend && countryCount >= thresholds.countrySuspend) {
return { level: "SUSPENDED", reason: "COUNTRY_VARIANCE_SUSPEND" };
}
if (thresholds.autoSuspend && regionCount >= thresholds.regionSuspend) {
return { level: "SUSPENDED", reason: "REGION_VARIANCE_SUSPEND" };
}
if (thresholds.autoSuspend && cityCount >= thresholds.citySuspend) {
return { level: "SUSPENDED", reason: "CITY_VARIANCE_SUSPEND" };
}
if (countryCount >= thresholds.countryWarning) {
return { level: "WARNING", reason: "COUNTRY_VARIANCE_WARNING" };
}
if (regionCount >= thresholds.regionWarning) {
return { level: "WARNING", reason: "REGION_VARIANCE_WARNING" };
}
@@ -353,6 +372,8 @@ async function evaluateSubscriptionRisk(input: {
citySuspend: config.subscriptionRiskCitySuspend,
regionWarning: config.subscriptionRiskRegionWarning,
regionSuspend: config.subscriptionRiskRegionSuspend,
countryWarning: config.subscriptionRiskCountryWarning,
countrySuspend: config.subscriptionRiskCountrySuspend,
autoSuspend: config.subscriptionRiskAutoSuspend,
};
const windowStartedAt = new Date(Date.now() - config.subscriptionRiskWindowHours * 60 * 60 * 1000);
@@ -399,17 +420,19 @@ async function evaluateSubscriptionRisk(input: {
const countryLabels = Array.from(countryMap.values());
const regionLabels = Array.from(regionMap.values());
const cityLabels = Array.from(cityMap.values());
const decision = decideRisk(cityLabels.length, regionLabels.length, thresholds);
const decision = decideRisk(countryLabels.length, regionLabels.length, cityLabels.length, thresholds);
if (!decision) return { warned: false, suspended: false };
const message = riskMessage({
decision,
kind: input.kind,
ip: input.ip,
cityCount: cityLabels.length,
countryCount: countryLabels.length,
regionCount: regionLabels.length,
cityLabels,
cityCount: cityLabels.length,
countryLabels,
regionLabels,
cityLabels,
});
const { event, created } = await createRiskEvent({