avamaxboobs/functions/list/getLength.js

A package for randomly selecting images of various people's boobs. Intended to be used for discord bot commands.

const fs = require('fs');
const path = require('path');

/**
 * Gets the number of items in a list
 * @param {string} list The list to get the length of
 * @returns {Promise<number>} The number of items in the list
 * @example const avamaxboobslength = await getLength('avamaxboobs')
 */
async function getLength(list){
    if(!list) throw new Error('You didn\'t provide a list to get the length of');

    const folder = fs.readdirSync(path.join(__dirname.slice(0,__dirname.length-15),'lists'));

    if(!folder.includes(`${list}.json`)) throw new Error(`Invalid list. List must be one of the following: ${folder.map(file=>file.slice(0,file.length-5)).join(', ')}`)

    const listfile = fs.readFileSync(path.join(__dirname.slice(0,__dirname.length-15),'lists',`${list}.json`))
    const keys = Object.keys(JSON.parse(listfile.toString()))
    const val = JSON.parse(listfile.toString())[keys]
    return val.length;
    
}

module.exports={
    getLength
}