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fix(status): bucket Today/Month by local date, not UTC

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renderStatusBar computed `today` via `new Date().toISOString().slice(0,10)`,
which is the UTC date. Session timestamps are also UTC ISO strings, but
the user's expectation of "today" is their wall-clock day. During the
window between local midnight and UTC midnight (e.g. 17:00 PDT on
2026-04-17, which is already 00:00 UTC on 2026-04-18), every session
bucketed under local April 17 missed the UTC-April-18 filter and the
status bar read `Today $0.00  0 calls` even while `--format json`
and the menubar app correctly showed the spend.

Both sides of the comparison now use the local date of each session
timestamp, so the terminal status and the JSON / menubar paths agree.
Verified at UTC midnight (the regression moment that surfaced the bug):

  Before: Today $0.0000  0 calls
  After:  Today $339.87  1839 calls

Caught during the fresh-clone review of the menubar PR.
This commit is contained in:
Resham Joshi 2026-04-17 17:05:08 -07:00
parent 3482478a49
commit 03f12ce81f
1 changed files with 17 additions and 2 deletions
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19
src/format.ts
View file

@ -13,9 +13,20 @@ export function formatTokens(n: number): string {
return n.toString()
}
/// Returns YYYY-MM-DD for the given date in the process-local timezone. Cheaper than shelling
/// out to Intl.DateTimeFormat for every turn in a loop and avoids the UTC drift that bites
/// `Date.toISOString().slice(0,10)` whenever the user runs this between local midnight and
/// UTC midnight.
function localDateString(d: Date): string {
const y = d.getFullYear()
const m = String(d.getMonth() + 1).padStart(2, '0')
const day = String(d.getDate()).padStart(2, '0')
return `${y}-${m}-${day}`
}
export function renderStatusBar(projects: ProjectSummary[]): string {
const now = new Date()
const today = now.toISOString().slice(0, 10)
const today = localDateString(now)
const monthStart = `${today.slice(0, 7)}-01`
let todayCost = 0, todayCalls = 0, monthCost = 0, monthCalls = 0
@ -24,7 +35,11 @@ export function renderStatusBar(projects: ProjectSummary[]): string {
for (const session of project.sessions) {
for (const turn of session.turns) {
if (!turn.timestamp) continue
const day = turn.timestamp.slice(0, 10)
// Bucket by the session timestamp's local date so the user's "today" and "this month"
// match the wall clock on their machine. Session timestamps are stored as UTC ISO
// strings; naively slicing `timestamp.slice(0,10)` bucketed them by UTC date, which
// showed `Today $0` during the UTC-midnight-to-local-midnight window.
const day = localDateString(new Date(turn.timestamp))
const turnCost = turn.assistantCalls.reduce((s, c) => s + c.costUSD, 0)
const turnCalls = turn.assistantCalls.length
if (day === today) { todayCost += turnCost; todayCalls += turnCalls }