hughrawlinson/spotify_platform_oauth.sh

## spotify_platform_oauth.sh
#!/bin/bash

# spotify_platform_oauth.sh
#
# A script to quickly and easily generate Spotify oauth tokens given a client
# id, secret, and scope. Will authenticate a user via the browser.

# The app must have "http://localhost:8082/' as a redirect_uri

# spotify_client_creds.json should contain a spotify client id and secret pair
# encoded as a json object with properties `id` and `secret`

# TODO grab client id and secret first from args, if not, then this file, if not, exit with an error
client_id=$(jq -r '.id' ~/.config/spotify_client_creds.json)
client_secret=$(jq -r '.secret' ~/.config/spotify_client_creds.json)
port=8082
redirect_uri=http%3A%2F%2Flocalhost%3A$port%2F
auth_endpoint=https://accounts.spotify.com/authorize/?response_type=code\&client_id=$client_id\&redirect_uri=$redirect_uri
# TODO return cached access token if scopes match and it hasn't expired
# TODO get scopes from args
scopes="playlist-read-private"
if [[ ! -z $scopes ]]
then
  encoded_scopes=$(echo $scopes| tr ' ' '%' | sed s/%/%20/g)
  # If scopes exists, then append them to auth_endpoint
  auth_endpoint=$auth_endpoint\&scope=$encoded_scopes
fi

# TODO if refresh_token exists and is valid for scopes, use refresh flow
open $auth_endpoint
# User is now authenticating on accounts.spotify.com...

# Now the user gets redirected to our endpoint
# Grab token and close browser window
response=$(echo "HTTP/1.1 200 OK\nAccess-Control-Allow-Origin:*\nContent-Length:65\n\n<html><script>open(location, '_self').close();</script></html>\n" | nc -l -c $port)
code=$(echo "$response" | grep GET | cut -d' ' -f 2 | cut -d'=' -f 2)

response=$(curl -s https://accounts.spotify.com/api/token \
  -H "Content-Type:application/x-www-form-urlencoded" \
  -H "Authorization: Basic $(echo -n $client_id:$client_secret | base64)" \
  -d "grant_type=authorization_code&code=$code&redirect_uri=http%3A%2F%2Flocalhost%3A$port%2F")

# Useful values are
# jq -r '.expires_in'
# may not exist
# jq -r '.scope'

# I'm not actually using this yet, best not store it
# echo $response | jq -r '.refresh_token' > /var/tmp/spotify_refresh_token
# TODO cache access token
echo $response | jq -r '.access_token'
	#!/bin/bash

	# spotify_platform_oauth.sh
	#
	# A script to quickly and easily generate Spotify oauth tokens given a client
	# id, secret, and scope. Will authenticate a user via the browser.

	# The app must have "http://localhost:8082/' as a redirect_uri

	# spotify_client_creds.json should contain a spotify client id and secret pair
	# encoded as a json object with properties `id` and `secret`

	# TODO grab client id and secret first from args, if not, then this file, if not, exit with an error
	client_id=$(jq -r '.id' ~/.config/spotify_client_creds.json)
	client_secret=$(jq -r '.secret' ~/.config/spotify_client_creds.json)
	port=8082
	redirect_uri=http%3A%2F%2Flocalhost%3A$port%2F
	auth_endpoint=https://accounts.spotify.com/authorize/?response_type=code\&client_id=$client_id\&redirect_uri=$redirect_uri
	# TODO return cached access token if scopes match and it hasn't expired
	# TODO get scopes from args
	scopes="playlist-read-private"
	if [[ ! -z $scopes ]]
	then
	encoded_scopes=$(echo $scopes\| tr ' ' '%' \| sed s/%/%20/g)
	# If scopes exists, then append them to auth_endpoint
	auth_endpoint=$auth_endpoint\&scope=$encoded_scopes
	fi

	# TODO if refresh_token exists and is valid for scopes, use refresh flow
	open $auth_endpoint
	# User is now authenticating on accounts.spotify.com...

	# Now the user gets redirected to our endpoint
	# Grab token and close browser window
	response=$(echo "HTTP/1.1 200 OK\nAccess-Control-Allow-Origin:*\nContent-Length:65\n\n<html><script>open(location, '_self').close();</script></html>\n" \| nc -l -c $port)
	code=$(echo "$response" \| grep GET \| cut -d' ' -f 2 \| cut -d'=' -f 2)

	response=$(curl -s https://accounts.spotify.com/api/token \
	-H "Content-Type:application/x-www-form-urlencoded" \
	-H "Authorization: Basic $(echo -n $client_id:$client_secret \| base64)" \
	-d "grant_type=authorization_code&code=$code&redirect_uri=http%3A%2F%2Flocalhost%3A$port%2F")

	# Useful values are
	# jq -r '.expires_in'
	# may not exist
	# jq -r '.scope'

	# I'm not actually using this yet, best not store it
	# echo $response \| jq -r '.refresh_token' > /var/tmp/spotify_refresh_token
	# TODO cache access token
	echo $response \| jq -r '.access_token'