| /** | |
| * automatedLimits.js | |
| * | |
| * Pure logic behind AutomatedSetupModal.jsx, pulled out of the component | |
| * for the same reason gridMath.js and strategyGuide.js already live here | |
| * rather than inside a .jsx file: this project's test runner only | |
| * executes plain .js under src/lib/__tests__/ (no JSX transform in that | |
| * path, by design -- see package.json's "test" script), so logic left | |
| * inline in a component is logic that never gets a regression test. | |
| * That gap is exactly how Dashboard.jsx's dead dashboard-tier button | |
| * shipped unnoticed -- see tierNavigation.js for the other half of that | |
| * fix. | |
| * | |
| * isValidLimit() intentionally mirrors tradeGate.js's own enableAutomated() | |
| * check (finite, > 0, nothing stricter) rather than inventing a separate | |
| * rule -- if this ever drifted from the gate's actual check, the UI could | |
| * either block something the gate would allow, or (worse) look valid | |
| * here and still throw at the gate. Kept identical on purpose. | |
| */ | |
| export function isValidLimit(raw) { | |
| if (typeof raw !== "string" || raw.trim() === "") return false; | |
| const n = Number(raw); | |
| return Number.isFinite(n) && n > 0; | |
| } | |
| /** Worst-case, not expected-case: what it would mean if every single | |
| * trade, every day, hit the per-trade cap. Returns null rather than NaN | |
| * or 0 when inputs aren't both valid yet, so a caller can't accidentally | |
| * render "$0" and have it read as a real answer. */ | |
| export function computeMaxDailyExposure(maxPerTradeUsd, maxDailyTradesCount) { | |
| if (!isValidLimit(String(maxPerTradeUsd)) || !isValidLimit(String(maxDailyTradesCount))) return null; | |
| return Number(maxPerTradeUsd) * Number(maxDailyTradesCount); | |
| } | |
| /** null when there's no balance to relate the exposure to yet (still | |
| * loading, or a zero/missing USD balance) -- distinguished from 0 for | |
| * the same "don't render a fake-looking real number" reason as above. */ | |
| export function computeExposurePctOfBalance(maxDailyExposure, usdBalance) { | |
| if (maxDailyExposure === null || !Number.isFinite(usdBalance) || usdBalance <= 0) return null; | |
| return (maxDailyExposure / usdBalance) * 100; | |
| } | |