ZacharyZhang-NY
b2eed3e75a
Avoid floating-point drift from parseFloat * 100 by parsing digits then concatenating; dollarsToCents returns null for invalid input.
62 lines
1.8 KiB
TypeScript
62 lines
1.8 KiB
TypeScript
import type { BudgetPolicyRecord } from "@shared/types";
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interface BuildBudgetPolicyInputArgs {
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policyId?: string | null;
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companyId: string;
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scopeType: "company" | "agent" | "project";
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scopeId: string;
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amountDollars: string;
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warnPercent: string;
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hardStopEnabled: boolean;
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notifyEnabled: boolean;
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}
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/**
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* Convert a dollar-string ("12.34") to integer cents without relying on float
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* multiplication (which can lose precision, e.g. 0.29 * 100 = 28.9999...).
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* Accepts optional sign, digits, and up to two fractional digits.
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*/
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function dollarsToCents(input: string): number | null {
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const trimmed = input.trim();
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const match = /^-?(\d+)(?:\.(\d{1,2}))?$/.exec(trimmed);
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if (!match) return null;
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const whole = match[1];
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const fraction = (match[2] ?? "").padEnd(2, "0");
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const cents = Number.parseInt(whole + fraction, 10);
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if (!Number.isFinite(cents)) return null;
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return trimmed.startsWith("-") ? -cents : cents;
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}
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export function buildBudgetPolicyInput(args: BuildBudgetPolicyInputArgs) {
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const amount = dollarsToCents(args.amountDollars);
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if (amount === null || amount <= 0) {
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return null;
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}
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const warnPercent = Number.parseInt(args.warnPercent, 10);
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if (!Number.isFinite(warnPercent) || warnPercent < 1 || warnPercent > 100) {
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return null;
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}
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return {
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id: args.policyId ?? null,
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companyId: args.companyId,
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scopeType: args.scopeType,
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scopeId: args.scopeId,
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metric: "billed_cents" as const,
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windowKind: "calendar_month_utc" as const,
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amount,
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warnPercent,
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hardStopEnabled: args.hardStopEnabled,
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notifyEnabled: args.notifyEnabled,
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isActive: true,
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};
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}
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export function getBudgetPolicyAmountDollars(policy: BudgetPolicyRecord | null): string {
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if (!policy) {
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return "";
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}
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return (policy.amount / 100).toFixed(2);
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}
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