Sven (AAMOS AI)
108 lines
3.4 KiB
TypeScript
108 lines
3.4 KiB
TypeScript
import {
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PLAN_DEFINITIONS,
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TRIAL_DAYS,
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type Entitlements,
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type SubscriptionPlan,
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type SubscriptionStatus,
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} from "@app/shared-types";
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export interface SubscriptionSnapshot {
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plan: SubscriptionPlan;
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status: SubscriptionStatus;
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expiresAt?: Date | null;
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gracePeriodExpiresAt?: Date | null;
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}
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export interface TrialSnapshot {
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startedAt: Date;
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endsAt: Date;
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}
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export interface UsageSnapshot {
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aiScansUsedThisMonth: number;
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}
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/**
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* Backend är source of truth (spec §47, §61.14). Denna funktion är den enda
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* platsen som avgör vad en användare får göra.
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*
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* Prioritet: aktiv betald prenumeration (inkl. grace) > pågående trial > free.
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*/
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export function computeEntitlements(
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subscription: SubscriptionSnapshot | null,
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trial: TrialSnapshot | null,
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usage: UsageSnapshot,
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now: Date = new Date(),
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): Entitlements {
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// 1. Betald prenumeration
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if (subscription) {
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const withinPeriod = subscription.expiresAt == null || subscription.expiresAt > now;
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const withinGrace =
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subscription.gracePeriodExpiresAt != null && subscription.gracePeriodExpiresAt > now;
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const active =
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(subscription.status === "active" || subscription.status === "trial") && withinPeriod;
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const inGrace = subscription.status === "in_grace" && withinGrace;
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if (active || inGrace) {
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const def = PLAN_DEFINITIONS[subscription.plan];
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return {
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plan: subscription.plan,
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status: inGrace ? "in_grace" : subscription.status,
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maxHouseholdMembers: def.maxHouseholdMembers,
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aiScansPerMonth: def.aiScansPerMonth,
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aiScansUsedThisMonth: usage.aiScansUsedThisMonth,
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weekPlanning: def.weekPlanning,
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advancedNutrition: def.advancedNutrition,
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communityPublish: def.communityPublish,
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expiresAt: subscription.expiresAt?.toISOString(),
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graceUntil: subscription.gracePeriodExpiresAt?.toISOString(),
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};
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}
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}
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// 2. Trial: 7 dagar full tillgång utan kort (spec §46). Family-nivå under trial.
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if (trial && trial.endsAt > now) {
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const def = PLAN_DEFINITIONS.family;
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return {
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plan: "family",
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status: "trial",
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maxHouseholdMembers: def.maxHouseholdMembers,
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aiScansPerMonth: def.aiScansPerMonth,
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aiScansUsedThisMonth: usage.aiScansUsedThisMonth,
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weekPlanning: true,
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advancedNutrition: true,
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communityPublish: true,
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expiresAt: trial.endsAt.toISOString(),
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};
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}
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// 3. Gratisnivå: användbar men begränsad (spec §46).
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const free = PLAN_DEFINITIONS.free;
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return {
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plan: "free",
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status: "free",
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maxHouseholdMembers: free.maxHouseholdMembers,
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aiScansPerMonth: free.aiScansPerMonth,
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aiScansUsedThisMonth: usage.aiScansUsedThisMonth,
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weekPlanning: free.weekPlanning,
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advancedNutrition: free.advancedNutrition,
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communityPublish: free.communityPublish,
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};
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}
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export function trialEndsAt(startedAt: Date): Date {
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return new Date(startedAt.getTime() + TRIAL_DAYS * 86_400_000);
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}
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/** Har användaren AI-skanningar kvar denna månad? (fair use, spec §45) */
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export function canUseAiScan(entitlements: Entitlements): boolean {
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return entitlements.aiScansUsedThisMonth < entitlements.aiScansPerMonth;
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}
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export function resolvePlanFromProductId(productId: string): SubscriptionPlan | null {
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for (const def of Object.values(PLAN_DEFINITIONS)) {
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if (def.appleProductId === productId || def.googleProductId === productId) return def.plan;
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}
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return null;
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}
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