Initial commit (unpacked platform)

2026-08-05 19:21:11 +07:00
commit ac5340195a
314 changed files with 57584 additions and 0 deletions
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+import {
+  PLAN_DEFINITIONS,
+  TRIAL_DAYS,
+  type Entitlements,
+  type SubscriptionPlan,
+  type SubscriptionStatus,
+} from "@app/shared-types";
+
+export interface SubscriptionSnapshot {
+  plan: SubscriptionPlan;
+  status: SubscriptionStatus;
+  expiresAt?: Date | null;
+  gracePeriodExpiresAt?: Date | null;
+}
+
+export interface TrialSnapshot {
+  startedAt: Date;
+  endsAt: Date;
+}
+
+export interface UsageSnapshot {
+  aiScansUsedThisMonth: number;
+}
+
+/**
+ * Backend är source of truth (spec §47, §61.14). Denna funktion är den enda
+ * platsen som avgör vad en användare får göra.
+ *
+ * Prioritet: aktiv betald prenumeration (inkl. grace) > pågående trial > free.
+ */
+export function computeEntitlements(
+  subscription: SubscriptionSnapshot | null,
+  trial: TrialSnapshot | null,
+  usage: UsageSnapshot,
+  now: Date = new Date(),
+): Entitlements {
+  // 1. Betald prenumeration
+  if (subscription) {
+    const withinPeriod = subscription.expiresAt == null || subscription.expiresAt > now;
+    const withinGrace =
+      subscription.gracePeriodExpiresAt != null && subscription.gracePeriodExpiresAt > now;
+    const active =
+      (subscription.status === "active" || subscription.status === "trial") && withinPeriod;
+    const inGrace = subscription.status === "in_grace" && withinGrace;
+
+    if (active || inGrace) {
+      const def = PLAN_DEFINITIONS[subscription.plan];
+      return {
+        plan: subscription.plan,
+        status: inGrace ? "in_grace" : subscription.status,
+        maxHouseholdMembers: def.maxHouseholdMembers,
+        aiScansPerMonth: def.aiScansPerMonth,
+        aiScansUsedThisMonth: usage.aiScansUsedThisMonth,
+        weekPlanning: def.weekPlanning,
+        advancedNutrition: def.advancedNutrition,
+        communityPublish: def.communityPublish,
+        expiresAt: subscription.expiresAt?.toISOString(),
+        graceUntil: subscription.gracePeriodExpiresAt?.toISOString(),
+      };
+    }
+  }
+
+  // 2. Trial: 7 dagar full tillgång utan kort (spec §46). Family-nivå under trial.
+  if (trial && trial.endsAt > now) {
+    const def = PLAN_DEFINITIONS.family;
+    return {
+      plan: "family",
+      status: "trial",
+      maxHouseholdMembers: def.maxHouseholdMembers,
+      aiScansPerMonth: def.aiScansPerMonth,
+      aiScansUsedThisMonth: usage.aiScansUsedThisMonth,
+      weekPlanning: true,
+      advancedNutrition: true,
+      communityPublish: true,
+      expiresAt: trial.endsAt.toISOString(),
+    };
+  }
+
+  // 3. Gratisnivå: användbar men begränsad (spec §46).
+  const free = PLAN_DEFINITIONS.free;
+  return {
+    plan: "free",
+    status: "free",
+    maxHouseholdMembers: free.maxHouseholdMembers,
+    aiScansPerMonth: free.aiScansPerMonth,
+    aiScansUsedThisMonth: usage.aiScansUsedThisMonth,
+    weekPlanning: free.weekPlanning,
+    advancedNutrition: free.advancedNutrition,
+    communityPublish: free.communityPublish,
+  };
+}
+
+export function trialEndsAt(startedAt: Date): Date {
+  return new Date(startedAt.getTime() + TRIAL_DAYS * 86_400_000);
+}
+
+/** Har användaren AI-skanningar kvar denna månad? (fair use, spec §45) */
+export function canUseAiScan(entitlements: Entitlements): boolean {
+  return entitlements.aiScansUsedThisMonth < entitlements.aiScansPerMonth;
+}
+
+export function resolvePlanFromProductId(productId: string): SubscriptionPlan | null {
+  for (const def of Object.values(PLAN_DEFINITIONS)) {
+    if (def.appleProductId === productId || def.googleProductId === productId) return def.plan;
+  }
+  return null;
+}