wuchale/dist/cli/input.js

Protobuf-like i18n from normal code

// $node %f wuchale
// @ts-check
import readline from 'readline';
import { color } from '../log.js';
export function setupInteractive() {
    readline.emitKeypressEvents(process.stdin);
    if (process.stdin.isTTY) {
        process.stdin.setRawMode(true);
    }
}
export async function ask(choices, question, logger) {
    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout,
    });
    if (question) {
        logger.log(question);
    }
    const data = {};
    for (const [i, c] of choices.entries()) {
        const key = i + 1;
        logger.log(`  ${color.cyan(key)}: ${c}`);
        data[key] = c;
    }
    process.stdout.write(` > ${color.grey('(enter to select the first one)\x1b[3G')}`);
    return new Promise((res, rej) => {
        const select = (choice) => {
            logger.log(` \x1b[K${color.cyan(choice)} selected\r`);
            res(choice);
        };
        const listener = (_, key) => {
            process.stdin.off('keypress', listener);
            switch (key.name) {
                case 'q':
                case 'escape':
                case 'c': // for Ctrl+C
                    rl.close();
                    rej();
                    break;
                case 'return':
                    rl.close();
                    select(choices[0]);
                    break;
                default:
                    rl.close();
                    if (key.name in data) {
                        select(data[key.name]);
                        return;
                    }
                    logger.warn(`Wrong key: ${color.cyan(key.name)}`);
                    ask(choices, question, logger).then(res, rej);
            }
        };
        process.stdin.on('keypress', listener);
    });
}
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