playlist2SongURI

#!/bin/bash

#Refresh Token
refresh_token=""
encoded_client_secret=""

#get access token by requesting new one and pipeing curl into /dev/null
access_token=$(curl -H "Authorization: Basic $encoded_client_secret" -d grant_type=refresh_token -d refresh_token=$refresh_token https://accounts.spotify.com/api/token 2>/dev/null | jq --raw-output  ".access_token")

#print banner
base64 -d <<<"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"
echo -e
echo "Your access token: " $access_token #debug
echo -e

#if no params were given
if [[ $1 == "" ]]
  then
    echo "Usage: ./playlist2SongURI <playlist> <file to save>"
    exit
fi

#split given spotify URI
URI=$1 
URI=(${URI//:/ })

#getting number of songs in playlist (limit is 1 to reduce traffic)
total=$(curl -X GET "https://api.spotify.com/v1/users/${URI[2]}t/playlists/${URI[4]}/tracks?limit=1" -H "Authorization: Bearer $access_token" 2>/dev/null | jq --raw-output  ".total")
numberOfSongs=$((($total+99)/100))

#if there are more than 100 songs
for ((i=0; i<$numberOfSongs; i++)); do 
  curl -X GET "https://api.spotify.com/v1/users/${URI[2]}t/playlists/${URI[4]}/tracks?offset=$(($i*100))" -H "Authorization: Bearer $access_token" > /tmp/spotify-playlist.json
  cat /tmp/spotify-playlist.json | jq --raw-output  ".items[] .track | .uri" >> /tmp/songsWithDuplicates.txt
done

#remove duplicats
awk '!a[$0]++' /tmp/songsWithDuplicates.txt > /tmp/songsWithLocals.txt 
#remove local files
grep -v "local" /tmp/songsWithLocals.txt > $2
#remove temp file
rm /tmp/songsWithDuplicates.txt