wip: zen lite

packages/console/core/src/subscription.ts

@@ -1,7 +1,7 @@
 import { z } from "zod"
 import { fn } from "./util/fn"
 import { centsToMicroCents } from "./util/price"
-import { getWeekBounds } from "./util/date"
+import { getWeekBounds, getMonthlyBounds } from "./util/date"
 
 export namespace Subscription {
   export const analyzeRollingUsage = fn(
@@ -29,7 +29,7 @@ export namespace Subscription {
         return {
           status: "ok" as const,
           resetInSec: Math.ceil((windowEnd.getTime() - now.getTime()) / 1000),
-          usagePercent: Math.ceil(Math.min(100, (usage / rollingLimitInMicroCents) * 100)),
+          usagePercent: Math.floor(Math.min(100, (usage / rollingLimitInMicroCents) * 100)),
         }
       }
       return {
@@ -61,7 +61,7 @@ export namespace Subscription {
         return {
           status: "ok" as const,
           resetInSec: Math.ceil((week.end.getTime() - now.getTime()) / 1000),
-          usagePercent: Math.ceil(Math.min(100, (usage / fixedLimitInMicroCents) * 100)),
+          usagePercent: Math.floor(Math.min(100, (usage / fixedLimitInMicroCents) * 100)),
         }
       }
 
@@ -72,4 +72,38 @@ export namespace Subscription {
       }
     },
   )
+
+  export const analyzeMonthlyUsage = fn(
+    z.object({
+      limit: z.number().int(),
+      usage: z.number().int(),
+      timeUpdated: z.date(),
+      timeSubscribed: z.date(),
+    }),
+    ({ limit, usage, timeUpdated, timeSubscribed }) => {
+      const now = new Date()
+      const month = getMonthlyBounds(now, timeSubscribed)
+      const fixedLimitInMicroCents = centsToMicroCents(limit * 100)
+      if (timeUpdated < month.start) {
+        return {
+          status: "ok" as const,
+          resetInSec: Math.ceil((month.end.getTime() - now.getTime()) / 1000),
+          usagePercent: 0,
+        }
+      }
+      if (usage < fixedLimitInMicroCents) {
+        return {
+          status: "ok" as const,
+          resetInSec: Math.ceil((month.end.getTime() - now.getTime()) / 1000),
+          usagePercent: Math.floor(Math.min(100, (usage / fixedLimitInMicroCents) * 100)),
+        }
+      }
+
+      return {
+        status: "rate-limited" as const,
+        resetInSec: Math.ceil((month.end.getTime() - now.getTime()) / 1000),
+        usagePercent: 100,
+      }
+    },
+  )
 }