4_sync-npm-modules

#!/bin/bash
cat <<"EOF"
https://github.com/riyadhalnur/npm-modules-sync instructions:
   1. On the machine you want to use as the source of your package list, run `npm-sync init -t <your-github-token>`
   2. Note the ID of the gist returned from the previous step once it completes
   3. On the machine you want to sync using the the gist, run `npm-sync init -t <your-github-token> -i <gist-id>`
   4. Run `npm-sync up` subsequently on your main machine to update the list of packages
   5. Run `npm-sync dl` subsequently on your synced machines to download the current list of global packages


EOF

# and note there is scant alternative unless you do it yourself https://stackoverflow.com/questions/41583514/npm-how-to-sync-global-packages-between-different-computers

# we'll need a github token. note: As a security precaution, GitHub automatically removes personal access tokens that haven't been used in a year.
# settings > Developer Settings > Personal Access Tokens > Generate new token, then just tick gist as the scope, note you won't be able to see the token ever again.
tokenFile=./sync-npm-modules-github-token.conf
source $tokenFile # gives us github-token-for-gist-access and #github_gist_id
token="$github_token_for_gist_access"
gist=$github_gist_id
[[ ! -z $token ]] && echo "github token is: $token" || (echo "can't access your github token from $tokenFile, exiting..." && exit)
[[ ! -z $gist ]] && echo "github gist can be found at: https://gist.github.com/tonywoode/$gist" || (echo "can't access your github gist from $tokenFile, exiting..." && exit)
echo "try this in browser console to pretty print the gist from that url: JSON.parse(document.getElementById('file-modules-json-LC1').textContent)"
echo ""
# install npm-modules sync if you don't have it (make sure you've installed a version of node first (try nvm install --lts)
if ! type "npm-sync" > /dev/null 2>&1; then
  echo "we need to install npm-modules-sync, installing globally..."
  npm install -g npm-modules-sync
fi
 
while true; do
	echo "What shall we do now?"
    echo "	1. make a one-off initial push from this machine to a gist (you'll need to manually paste the new gist id into the config file)"
    echo "	2. make a one-off initial pull from the gist to this machine (his step 3)"
    echo "	3. upload npm module changes to gist (his step 4) This might not work if you've been away awhile: so make a new gist with step 1"
    echo "	4. download npm module changes from gist (his step 5)"
	echo "	5. exit"
	
	read -p "-> " response
	case $response in
		1) read -s -n 1 -p "Press any key to do an INITIAL sync to this machine (for subsequent syncs read instructions above) . . ."
           echo ""
           npm-sync init -t "$token"
           npm uninstall -g replace-slack-text
           echo "note a bug if you have installed anything from your own filesystem, you'll have to delete it from the gist manually atm"
           npm install -g /Users/twoode/CODE/Scripts/unslack/
           echo "Now paste that gist ID into the config file";;
		2) # bear in mind I already ran a gist creation from an initial machine which made me a gist id
           read -s -n 1 -p "Press any key to do an INITIAL sync to this machine (for subsequent syncs read instructions above) . . ."
           echo ""
           npm-sync init -t "$token" -i "$gist"
           echo "note a bug if you have installed anything from your own filesystem, you'll have to delete it from the gist manually atm"
           echo "I don't say much I did just finish....bye";;
		3) echo "Ok, lets upload changes"
           echo "we have to uninstall your locally installed non-npm modules or this will fail...we can install them again right after"
           npm uninstall -g replace-slack-text
           npm-sync up -t "$token" -i "$gist"
           npm install -g /Users/twoode/CODE/Scripts/unslack/
           echo "saving a copy of the modules installed at this point to /npm-modules-log/"
           npm list -g --depth=0 > npm-modules-log/npm_installed_modules_$(hostname).txt && date >> npm-modules-log/npm_installed_modules_$(hostname).txt
          ;;
		4) echo "Ok, lets download changes"
           echo "take a copy of the modules installed at this point to /npm-modules-log name *_BEFORE.txt"
           npm list -g --depth=0 > npm-modules-log/npm_installed_modules_$(hostname)_BEFORE.txt && date >> npm-modules-log/npm_installed_modules_$(hostname)_BEFORE.txt
           npm-sync dl
           echo "take a copy of the modules installed after the operation to /npm-modules-log (the one not named *_BEFORE.txt)"
           npm list -g --depth=0 > npm-modules-log/npm_installed_modules_$(hostname).txt && date >> npm-modules-log/npm_installed_modules_$(hostname).txt
          ;;
        5) echo "bye" && exit;;
		*) echo "Try again";;
	esac
done