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| Mission control shows model usage, yours and the workspace's: tokens, cost, active days, cache share, each day, and the mix | 1 | /** |
| 2 | * Model tokens for mission control's usage panel: a person's or the | |
| 3 | * workspace's, over the last weeks (billing's `token_usage`). | |
| 4 | */ | |
| 5 | ||
| 6 | import type { TokenUsage } from "@g1t/contracts"; | |
| 7 | ||
| 8 | /** What billing answers. */ | |
| 9 | export type TokenUsageView = TokenUsage; | |
| 10 | ||
| 11 | /** "8.5B", "412M", "12.3K", "940". */ | |
| 12 | export function compactTokens(n: number): string { | |
| 13 | const units: [number, string][] = [ | |
| 14 | [1e12, "T"], | |
| 15 | [1e9, "B"], | |
| 16 | [1e6, "M"], | |
| 17 | [1e3, "K"], | |
| 18 | ]; | |
| 19 | for (const [size, unit] of units) { | |
| 20 | if (n >= size) { | |
| 21 | const value = n / size; | |
| 22 | return `${value >= 100 ? Math.round(value) : Number(value.toFixed(1))}${unit}`; | |
| 23 | } | |
| 24 | } | |
| 25 | return String(Math.max(0, Math.round(n))); | |
| 26 | } | |
| 27 | ||
| 28 | /** The share of prompt tokens read from the provider's cache, 0..1; null with no prompt. */ | |
| 29 | export function cacheShare(usage: Pick<TokenUsageView, "inputTokens" | "cacheReadTokens" | "cacheWriteTokens">): number | null { | |
| 30 | const prompt = usage.inputTokens + usage.cacheReadTokens + usage.cacheWriteTokens; | |
| 31 | return prompt > 0 ? usage.cacheReadTokens / prompt : null; | |
| 32 | } | |
| 33 | ||
| 34 | /** Shading levels for the daily grid: 0 for none, then 1..4 by quartile of the busiest day. */ | |
| 35 | export const HEAT_LEVELS = 4; | |
| 36 | ||
| 37 | export function heatLevel(tokens: number, busiest: number): number { | |
| 38 | if (tokens <= 0 || busiest <= 0) return 0; | |
| 39 | return Math.min(HEAT_LEVELS, Math.max(1, Math.ceil((tokens / busiest) * HEAT_LEVELS))); | |
| 40 | } | |
| 41 | ||
| 42 | /** The busiest day, or null when none had tokens. */ | |
| 43 | export function bestDay(byDay: TokenUsageView["byDay"]): { day: string; tokens: number } | null { | |
| 44 | let best: { day: string; tokens: number } | null = null; | |
| 45 | for (const entry of byDay) if (entry.tokens > 0 && (!best || entry.tokens > best.tokens)) best = entry; | |
| 46 | return best; | |
| 47 | } | |
| 48 | ||
| 49 | /** One part of the token mix, in stacking order. */ | |
| 50 | export type MixPart = { key: "input" | "cacheRead" | "cacheWrite" | "output"; label: string; tokens: number; share: number }; | |
| 51 | ||
| 52 | /** | |
| 53 | * New input, cache reads, cache writes and output, in that order: the | |
| 54 | * order the colours were checked in (neighbours stay apart for every kind | |
| 55 | * of colour vision). | |
| 56 | */ | |
| 57 | export function tokenMix(usage: TokenUsageView): MixPart[] { | |
| 58 | const parts: Omit<MixPart, "share">[] = [ | |
| 59 | { key: "input", label: "New input", tokens: usage.inputTokens }, | |
| 60 | { key: "cacheRead", label: "Cache reads", tokens: usage.cacheReadTokens }, | |
| 61 | { key: "cacheWrite", label: "Cache writes", tokens: usage.cacheWriteTokens }, | |
| 62 | { key: "output", label: "Output", tokens: usage.outputTokens }, | |
| 63 | ]; | |
| 64 | const total = parts.reduce((sum, part) => sum + part.tokens, 0); | |
| 65 | return parts.map((part) => ({ ...part, share: total > 0 ? part.tokens / total : 0 })); | |
| 66 | } | |
| 67 | ||
| 68 | /** "22 Sept"-style short day, read in UTC since days are UTC dates. */ | |
| 69 | export function shortDay(day: string): string { | |
| 70 | const date = new Date(`${day}T00:00:00Z`); | |
| 71 | return Number.isNaN(date.getTime()) | |
| 72 | ? day | |
| 73 | : date.toLocaleDateString("en-GB", { day: "numeric", month: "short", timeZone: "UTC" }); | |
| 74 | } |