I am doing a Telegram Bot implemented in a Raspberry Pi 3. So my first idea is to use "telegraf" with Node.js and execute the code of the BOT there, but also with "shell.js" i would like to run some commands on Raspberry Terminal. The problem is that i would like the code from the BOT to wait until a file is downloaded and then the program continues...
The problem here is that the program does some things not in order of appearance.
var shell = require('shelljs')
const download = (ctx) => {
ctx.reply('Downloading...')
shell.exec('sudo bash script_Download.sh ' + ctx.command.args[0])
while(shell.exec('ps -ef | grep wget | grep -v grep')!=''){}
ctx.reply('Downloaded.')
ctx.reply('Uploading the file to Google Drive...')
shell.exec('mv ~/Super_Secret_File /mnt/gdrive/TRBDownloads')
}
module.exports = download
Here in this specific code, I would like to the program to write "Downloading...", after that start the
script_Download begins and the program is paused until the command wget is finished (inside script_Downlaod) this part is done by this: while(shell.exec('ps -ef | grep wget | grep -v grep')!=''){}. But the return is something like "File not found" (this means that wget didnt finished) and after that, "Downloading" and "Uploading the file to Google Drive..." is written on Telegram chat.
So, i would like to know how to make this part of code executing in order: First write Downloading, execute the script, waits until it finishs and then writes Uploading... (Sorry, I don't know that much of Javascript so my knowledge right now is basic )
