brackt/app/lib/draft-timer.ts
Chris Parsons 2949ca733a
Add standard draft clock mode (#67) (#189)
Implements a new "standard" timer mode alongside the existing chess clock
mode. In standard mode the per-pick timer resets to a fixed value after
every pick (no carry-over), and the speed selector shows plain time values
instead of named chess-clock presets.

Key changes:
- Add `draft_timer_mode` enum column to `seasons` table (migration 0053)
- `draft.start`: standard mode seeds timers at `draftIncrementTime` (the
  per-pick value) rather than `draftInitialTime`
- `draft.make-pick`: three-way branch — standard resets, chess clock
  owner earns increment, commissioner/admin pick leaves bank frozen
- `draft.force-manual-pick`: commissioner picks never earn bank time;
  chess clock path uses a pre-pick snapshot to avoid a race window with
  the 1-second timer loop
- `executeAutoPick` in draft-utils: auto picks never earn bank time;
  chess clock path skips the DB update (timer already at 0)
- League creation and settings pages: mode-aware speed selector (raw
  seconds for standard, named presets for chess clock); shared
  `parseDraftSpeed` utility extracted to `app/lib/draft-timer.ts`
- Tests added for draft.start timer init and make-pick timer mode
  behavior; force-manual-pick tests updated for new timer semantics

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-20 21:36:39 -07:00

87 lines
3 KiB
TypeScript

/**
* Pure utility functions for the draft clock/timer system.
* Extracted here to be independently testable and shared across
* route handlers and UI components.
*
* Clock model (chess-clock / Fischer increment):
* - Draft start: every team receives `initialTime` as their bank.
* - While on the clock: the active team's bank counts down each second.
* - After a pick is made: the picker's bank += `incrementTime`.
* - Between turns: all other teams' banks are left untouched.
*/
/**
* Formats a seconds value for display.
* undefined → "--:--"
* < 3600 s → "m:ss"
* >= 3600 s → "h:mm:ss"
*/
export function formatClockTime(seconds: number | undefined): string {
if (seconds === undefined) return "--:--";
const clamped = Math.max(0, seconds); // guard against negative values from timer drift
const h = Math.floor(clamped / 3600);
const m = Math.floor((clamped % 3600) / 60);
const s = clamped % 60;
if (h > 0)
return `${h}:${String(m).padStart(2, "0")}:${String(s).padStart(2, "0")}`;
return `${m}:${String(s).padStart(2, "0")}`;
}
/**
* Returns a team's new bank time after they complete a pick.
* The increment is the post-pick reward (chess clock model).
*
* @param bankTime Current remaining seconds in the team's bank
* @param incrementTime Bonus seconds awarded after each pick
*/
export function calculateTimeAfterPick(
bankTime: number,
incrementTime: number
): number {
return bankTime + incrementTime;
}
/**
* Converts a draftSpeed form value + timerMode into DB time fields.
*
* Standard mode: speed is raw seconds (the per-pick time); both fields equal it.
* Chess clock mode: speed is a named preset that maps to (initial bank, increment).
*/
export function parseDraftSpeed(
draftSpeed: string | null,
draftTimerMode: "chess_clock" | "standard"
): { draftInitialTime: number; draftIncrementTime: number } {
if (draftTimerMode === "standard") {
const seconds = parseInt(draftSpeed ?? "", 10);
const time = isNaN(seconds) ? 90 : seconds;
return { draftInitialTime: time, draftIncrementTime: time };
}
switch (draftSpeed) {
case "fast":
return { draftInitialTime: 60, draftIncrementTime: 10 };
case "slow":
return { draftInitialTime: 28800, draftIncrementTime: 3600 };
case "very-slow":
return { draftInitialTime: 43200, draftIncrementTime: 3600 };
default:
return { draftInitialTime: 120, draftIncrementTime: 15 };
}
}
/**
* Returns the Tailwind colour class(es) for a timer value.
*
* > 60 s → green (plenty of time)
* > 30 s → amber (getting tight)
* > 10 s → coral (urgent)
* ≤ 10 s → coral + animate-pulse (critical)
* undefined → muted (clock not running)
*/
export function getTimerColorClass(seconds: number | undefined): string {
if (seconds === undefined) return "text-muted-foreground";
if (seconds > 60) return "text-emerald-400";
if (seconds > 30) return "text-amber-accent";
if (seconds > 10) return "text-coral-accent";
return "text-coral-accent animate-pulse";
}