chore: import upstream snapshot with attribution

apps/sim/lib/billing/storage/limits.ts

@@ -0,0 +1,206 @@
+/**
+ * Storage limit management
+ * Similar to cost limits but for file storage quotas
+ */
+
+import { db } from '@sim/db'
+import {
+  DEFAULT_ENTERPRISE_STORAGE_LIMIT_GB,
+  DEFAULT_FREE_STORAGE_LIMIT_GB,
+  DEFAULT_PRO_STORAGE_LIMIT_GB,
+  DEFAULT_TEAM_STORAGE_LIMIT_GB,
+} from '@sim/db/constants'
+import { organization, userStats } from '@sim/db/schema'
+import { createLogger } from '@sim/logger'
+import { eq } from 'drizzle-orm'
+import type { HighestPrioritySubscription } from '@/lib/billing/core/plan'
+import { getPlanTypeForLimits, isEnterprise, isFree } from '@/lib/billing/plan-helpers'
+import { isOrgScopedSubscription } from '@/lib/billing/subscriptions/utils'
+import { getEnv } from '@/lib/core/config/env'
+import { isBillingEnabled } from '@/lib/core/config/env-flags'
+
+const logger = createLogger('StorageLimits')
+
+/** Resolve the highest-priority subscription via a deferred import (avoids a static cycle). */
+async function resolveSub(userId: string): Promise<HighestPrioritySubscription | null> {
+  const { getHighestPrioritySubscription } = await import('@/lib/billing/core/subscription')
+  return getHighestPrioritySubscription(userId)
+}
+
+/**
+ * Convert GB to bytes
+ */
+function gbToBytes(gb: number): number {
+  return gb * 1024 * 1024 * 1024
+}
+
+/**
+ * Get storage limits from environment variables with fallback to constants
+ * Returns limits in bytes
+ */
+export function getStorageLimits() {
+  return {
+    free: gbToBytes(
+      Number.parseInt(getEnv('FREE_STORAGE_LIMIT_GB') || String(DEFAULT_FREE_STORAGE_LIMIT_GB))
+    ),
+    pro: gbToBytes(
+      Number.parseInt(getEnv('PRO_STORAGE_LIMIT_GB') || String(DEFAULT_PRO_STORAGE_LIMIT_GB))
+    ),
+    team: gbToBytes(
+      Number.parseInt(getEnv('TEAM_STORAGE_LIMIT_GB') || String(DEFAULT_TEAM_STORAGE_LIMIT_GB))
+    ),
+    enterpriseDefault: gbToBytes(
+      Number.parseInt(
+        getEnv('ENTERPRISE_STORAGE_LIMIT_GB') || String(DEFAULT_ENTERPRISE_STORAGE_LIMIT_GB)
+      )
+    ),
+  }
+}
+
+/**
+ * Get storage limit for a specific plan
+ * Returns limit in bytes
+ */
+export function getStorageLimitForPlan(plan: string, metadata?: any): number {
+  const limits = getStorageLimits()
+
+  if (isEnterprise(plan)) {
+    if (metadata?.storageLimitGB) {
+      return gbToBytes(Number.parseInt(metadata.storageLimitGB))
+    }
+    return limits.enterpriseDefault
+  }
+
+  const effectivePlan = getPlanTypeForLimits(plan)
+  const limitByPlan: Record<'free' | 'pro' | 'team', number> = {
+    free: limits.free,
+    pro: limits.pro,
+    team: limits.team,
+  }
+  return limitByPlan[effectivePlan as 'free' | 'pro' | 'team'] ?? limits.free
+}
+
+/**
+ * Get storage limit for a user based on their subscription. Returns limit in
+ * bytes.
+ *
+ * @param prefetchedSub - Pass an already-resolved subscription (may be `null`)
+ *   to skip the `getHighestPrioritySubscription` lookup on hot paths. Omit
+ *   (leave `undefined`) to fetch it here.
+ */
+export async function getUserStorageLimit(
+  userId: string,
+  prefetchedSub?: HighestPrioritySubscription | null
+): Promise<number> {
+  try {
+    const sub = prefetchedSub === undefined ? await resolveSub(userId) : prefetchedSub
+
+    const limits = getStorageLimits()
+
+    if (!sub || isFree(sub.plan)) {
+      return limits.free
+    }
+
+    if (isOrgScopedSubscription(sub, userId)) {
+      const metadata = sub.metadata as { customStorageLimitGB?: number } | null
+      if (metadata?.customStorageLimitGB) {
+        return metadata.customStorageLimitGB * 1024 * 1024 * 1024
+      }
+      return isEnterprise(sub.plan) ? limits.enterpriseDefault : limits.team
+    }
+
+    // Personally-scoped plans use the per-plan default storage cap.
+    const effectivePlan = getPlanTypeForLimits(sub.plan)
+    const limitByPlan: Record<'free' | 'pro' | 'team', number> = {
+      free: limits.free,
+      pro: limits.pro,
+      team: limits.team,
+    }
+    return limitByPlan[effectivePlan as 'free' | 'pro' | 'team'] ?? limits.free
+  } catch (error) {
+    logger.error('Error getting user storage limit:', error)
+    return getStorageLimits().free
+  }
+}
+
+/**
+ * Get current storage usage for a user. Returns usage in bytes.
+ *
+ * @param prefetchedSub - Pass an already-resolved subscription (may be `null`)
+ *   to skip the `getHighestPrioritySubscription` lookup on hot paths.
+ */
+export async function getUserStorageUsage(
+  userId: string,
+  prefetchedSub?: HighestPrioritySubscription | null
+): Promise<number> {
+  try {
+    const sub = prefetchedSub === undefined ? await resolveSub(userId) : prefetchedSub
+
+    // Org-scoped subs share pooled `organization.storageUsedBytes`;
+    // personal plans use `userStats`.
+    if (isOrgScopedSubscription(sub, userId) && sub) {
+      const orgRecord = await db
+        .select({ storageUsedBytes: organization.storageUsedBytes })
+        .from(organization)
+        .where(eq(organization.id, sub.referenceId))
+        .limit(1)
+
+      return orgRecord.length > 0 ? orgRecord[0].storageUsedBytes || 0 : 0
+    }
+
+    const stats = await db
+      .select({ storageUsedBytes: userStats.storageUsedBytes })
+      .from(userStats)
+      .where(eq(userStats.userId, userId))
+      .limit(1)
+
+    return stats.length > 0 ? stats[0].storageUsedBytes || 0 : 0
+  } catch (error) {
+    logger.error('Error getting user storage usage:', error)
+    return 0
+  }
+}
+
+/**
+ * Check if user has storage quota available
+ * Always allows uploads when billing is disabled
+ */
+export async function checkStorageQuota(
+  userId: string,
+  additionalBytes: number
+): Promise<{ allowed: boolean; currentUsage: number; limit: number; error?: string }> {
+  if (!isBillingEnabled) {
+    return {
+      allowed: true,
+      currentUsage: 0,
+      limit: Number.MAX_SAFE_INTEGER,
+    }
+  }
+
+  try {
+    const [currentUsage, limit] = await Promise.all([
+      getUserStorageUsage(userId),
+      getUserStorageLimit(userId),
+    ])
+
+    const newUsage = currentUsage + additionalBytes
+    const allowed = newUsage <= limit
+
+    return {
+      allowed,
+      currentUsage,
+      limit,
+      error: allowed
+        ? undefined
+        : `Storage limit exceeded. Used: ${(newUsage / (1024 * 1024 * 1024)).toFixed(2)}GB, Limit: ${(limit / (1024 * 1024 * 1024)).toFixed(0)}GB`,
+    }
+  } catch (error) {
+    logger.error('Error checking storage quota:', error)
+    return {
+      allowed: false,
+      currentUsage: 0,
+      limit: 0,
+      error: 'Failed to check storage quota',
+    }
+  }
+}