import { createPrompt, useState, useKeypress, usePrefix, isEnterKey, isBackspaceKey, makeTheme, } from '@inquirer/core';
function isStepOf(value, step, min) {
const valuePow = value * Math.pow(10, 6);
const stepPow = step * Math.pow(10, 6);
const minPow = min * Math.pow(10, 6);
return (valuePow - (Number.isFinite(min) ? minPow : 0)) % stepPow === 0;
}
function validateNumber(value, { min, max, step, }) {
if (value == null || Number.isNaN(value)) {
return false;
}
else if (value < min || value > max) {
return `Value must be between ${min} and ${max}`;
}
else if (step !== 'any' && !isStepOf(value, step, min)) {
return `Value must be a multiple of ${step}${Number.isFinite(min) ? ` starting from ${min}` : ''}`;
}
return true;
}
export default createPrompt((config, done) => {
const { validate = () => true, min = -Infinity, max = Infinity, step = 1, required = false, } = config;
const theme = makeTheme(config.theme);
const [status, setStatus] = useState('idle');
const [value, setValue] = useState(''); // store the input value as string and convert to number on "Enter"
// Ignore default if not valid.
const validDefault = validateNumber(config.default, { min, max, step }) === true
? config.default?.toString()
: undefined;
const [defaultValue = '', setDefaultValue] = useState(validDefault);
const [errorMsg, setError] = useState();
const prefix = usePrefix({ status, theme });
useKeypress(async (key, rl) => {
// Ignore keypress while our prompt is doing other processing.
if (status !== 'idle') {
return;
}
if (isEnterKey(key)) {
const input = value || defaultValue;
const answer = input === '' ? undefined : Number(input);
setStatus('loading');
let isValid = true;
if (required || answer != null) {
isValid = validateNumber(answer, { min, max, step });
}
if (isValid === true) {
isValid = await validate(answer);
}
if (isValid === true) {
setValue(String(answer ?? ''));
setStatus('done');
done(answer);
}
else {
// Reset the readline line value to the previous value. On line event, the value
// get cleared, forcing the user to re-enter the value instead of fixing it.
rl.write(value);
setError(isValid || 'You must provide a valid numeric value');
setStatus('idle');
}
}
else if (isBackspaceKey(key) && !value) {
setDefaultValue(undefined);
}
else if (key.name === 'tab' && !value) {
setDefaultValue(undefined);
rl.clearLine(0); // Remove the tab character.
rl.write(defaultValue);
setValue(defaultValue);
}
else {
setValue(rl.line);
setError(undefined);
}
});
const message = theme.style.message(config.message, status);
let formattedValue = value;
if (status === 'done') {
formattedValue = theme.style.answer(value);
}
let defaultStr;
if (defaultValue && status !== 'done' && !value) {
defaultStr = theme.style.defaultAnswer(defaultValue);
}
let error = '';
if (errorMsg) {
error = theme.style.error(errorMsg);
}
return [
[prefix, message, defaultStr, formattedValue]
.filter((v) => v !== undefined)
.join(' '),
error,
];
});