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import { z } from "zod"
import { fn } from "./util/fn"
import { Resource } from "@opencode-ai/console-resource"
import { centsToMicroCents } from "./util/price"
import { getWeekBounds } from "./util/date"
import { SubscriptionPlan } from "./schema/billing.sql"
export namespace BlackData {
const Schema = z.object({
"200": z.object({
fixedLimit: z.number().int(),
rollingLimit: z.number().int(),
rollingWindow: z.number().int(),
}),
"100": z.object({
fixedLimit: z.number().int(),
rollingLimit: z.number().int(),
rollingWindow: z.number().int(),
}),
"20": z.object({
fixedLimit: z.number().int(),
rollingLimit: z.number().int(),
rollingWindow: z.number().int(),
}),
})
export const validate = fn(Schema, (input) => {
return input
})
export const get = fn(
z.object({
plan: z.enum(SubscriptionPlan),
}),
({ plan }) => {
const json = JSON.parse(Resource.ZEN_BLACK_LIMITS.value)
return Schema.parse(json)[plan]
},
)
}
export namespace Black {
export const analyzeRollingUsage = fn(
z.object({
plan: z.enum(SubscriptionPlan),
usage: z.number().int(),
timeUpdated: z.date(),
}),
({ plan, usage, timeUpdated }) => {
const now = new Date()
const black = BlackData.get({ plan })
const rollingWindowMs = black.rollingWindow * 3600 * 1000
const rollingLimitInMicroCents = centsToMicroCents(black.rollingLimit * 100)
const windowStart = new Date(now.getTime() - rollingWindowMs)
if (timeUpdated < windowStart) {
return {
status: "ok" as const,
resetInSec: black.rollingWindow * 3600,
usagePercent: 0,
}
}
const windowEnd = new Date(timeUpdated.getTime() + rollingWindowMs)
if (usage < rollingLimitInMicroCents) {
return {
status: "ok" as const,
resetInSec: Math.ceil((windowEnd.getTime() - now.getTime()) / 1000),
usagePercent: Math.ceil(Math.min(100, (usage / rollingLimitInMicroCents) * 100)),
}
}
return {
status: "rate-limited" as const,
resetInSec: Math.ceil((windowEnd.getTime() - now.getTime()) / 1000),
usagePercent: 100,
}
},
)
export const analyzeWeeklyUsage = fn(
z.object({
plan: z.enum(SubscriptionPlan),
usage: z.number().int(),
timeUpdated: z.date(),
}),
({ plan, usage, timeUpdated }) => {
const black = BlackData.get({ plan })
const now = new Date()
const week = getWeekBounds(now)
const fixedLimitInMicroCents = centsToMicroCents(black.fixedLimit * 100)
if (timeUpdated < week.start) {
return {
status: "ok" as const,
resetInSec: Math.ceil((week.end.getTime() - now.getTime()) / 1000),
usagePercent: 0,
}
}
if (usage < fixedLimitInMicroCents) {
return {
status: "ok" as const,
resetInSec: Math.ceil((week.end.getTime() - now.getTime()) / 1000),
usagePercent: Math.ceil(Math.min(100, (usage / fixedLimitInMicroCents) * 100)),
}
}
return {
status: "rate-limited" as const,
resetInSec: Math.ceil((week.end.getTime() - now.getTime()) / 1000),
usagePercent: 100,
}
},
)
}
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