soconnor
d057ba208d
git-subtree-dir: apps/mobile git-subtree-mainline:86f8987dffgit-subtree-split:5fa30f365f
72 lines
2.1 KiB
TypeScript
72 lines
2.1 KiB
TypeScript
import { useCallback, useState } from "react";
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export function useFieldVisibility() {
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const [touched, setTouched] = useState<Record<string, boolean>>({});
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const [submitted, setSubmitted] = useState(false);
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const touch = useCallback((field: string) => {
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setTouched((prev) => (prev[field] ? prev : { ...prev, [field]: true }));
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}, []);
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const visible = useCallback(
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(field: string) => submitted || Boolean(touched[field]),
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[submitted, touched],
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);
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const markSubmitted = useCallback(() => setSubmitted(true), []);
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return { touch, visible, markSubmitted };
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}
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export function isRequiredString(value: string): boolean {
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return value.trim().length > 0;
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}
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export function isValidEmail(value: string): boolean {
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const trimmed = value.trim();
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if (!trimmed) return false;
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return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(trimmed);
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}
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export function isValidPassword(value: string): boolean {
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return value.length >= 8;
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}
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/** Parses a non-negative decimal, or null if empty/invalid. */
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export function parseNonNegativeNumber(value: string): number | null {
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const trimmed = value.trim();
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if (!trimmed) return null;
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const n = Number(trimmed);
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if (Number.isNaN(n) || n < 0) return null;
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return n;
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}
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export function isValidTaxRate(value: string): boolean {
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const n = parseNonNegativeNumber(value);
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if (n === null) return false;
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return n <= 100;
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}
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export type LineItemInput = {
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description: string;
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hours: string;
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rate: string;
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};
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export function validateLineItems(items: LineItemInput[]): string | null {
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if (items.length === 0) return null;
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for (const item of items) {
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if (!isRequiredString(item.description)) return "Each line needs a description";
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if (parseNonNegativeNumber(item.hours) === null) return "Hours must be a valid number";
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if (parseNonNegativeNumber(item.rate) === null) return "Rate must be a valid number";
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}
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return null;
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}
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export function validateLineItemsForSend(items: LineItemInput[]): string | null {
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if (items.length === 0) return "Add at least one line item before sending";
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return validateLineItems(items);
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}
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