62 lines
1.3 KiB
TypeScript
62 lines
1.3 KiB
TypeScript
// @ts-strict-ignore
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import { useState } from "react";
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export interface UseWizardActions<T> {
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next: () => void;
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prev: () => void;
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set: (step: T) => void;
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}
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export interface UseWizardOpts<T> {
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onTransition: (prevStep: T, nextStep: T) => void;
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}
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export type UseWizard<T> = [T, UseWizardActions<T>];
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function useWizard<T>(
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initial: T,
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steps: T[],
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opts?: UseWizardOpts<T>,
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): UseWizard<T> {
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const [stepIndex, setStepIndex] = useState(steps.indexOf(initial));
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function goToStep(nextStepIndex) {
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if (typeof opts?.onTransition === "function") {
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opts.onTransition(steps[stepIndex], steps[nextStepIndex]);
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}
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setStepIndex(nextStepIndex);
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}
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function next() {
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if (stepIndex === steps.length - 1) {
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console.error("This is the last step");
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} else {
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goToStep(stepIndex + 1);
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}
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}
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function prev() {
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if (stepIndex === 0) {
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console.error("This is the first step");
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} else {
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goToStep(stepIndex - 1);
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}
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}
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function set(step: T) {
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const newStepIndex = steps.findIndex(s => s === step);
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if (newStepIndex === -1) {
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console.error("Step does not exist");
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} else {
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goToStep(newStepIndex);
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}
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}
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return [
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steps[stepIndex],
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{
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next,
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prev,
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set,
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},
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];
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}
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export default useWizard;
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