What Pixies can do in the time it takes Pearl Jam to play Rockin in the free world

pixies.sh

#!/bin/bash
set -e

CLIENT_ID=…
CLIENT_SECRET=…

# ID for Pixies
ARTIST=6zvul52xwTWzilBZl6BUbT
DURATION_MS=$((15 * 60 * 1000))

# Retrieve API token
TOKEN=$(curl -s -X POST \
  "https://accounts.spotify.com/api/token"             \
  -d "grant_type=client_credentials"                   \
  -u "$CLIENT_ID:$CLIENT_SECRET"                       \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -H "Accept: application/json"                        \
  | jq -r .access_token)

function get() {    
  curl -s -X GET \
    "https://api.spotify.com/v1$1"               \
    -H "Authorization: Bearer $TOKEN"             \
    -H "Content-Type: application/json"
 }

# Retrieve list of Album IDs, excluding non-live albums
read -r -a ALBUMS <<< $( \
  get "/artists/$ARTIST/albums?offset=0&limit=50&include_groups=album&market=GB" \
  | jq -cr '.items[] | select(.name | contains("Live") | not) | .id')


TRACKS=""
# Loop over each Album to retrieve their tracks and append tracks to env file  
for id in "${ALBUMS[@]}"; do 
  TRACK=$(get "/albums/$id/tracks"  \
    | jq -c '.items[] | { "duration": .duration_ms, "name": .name}')
  TRACKS="${TRACKS}\n${TRACK}"
done;

# Convert json to CSV format
# Remove duplicates by name
# Numerically sort shortest to longest
# Exclude demo, remastered, live and Peel tracks
# Print out tracks until they surpass 15 minutes worth of milliseconds
echo "${TRACKS}" \
  | jq  -rs 'unique_by(.name) 
         | sort_by(.duration) | .[]
         | select(.name | contains("Demo") or contains("Remastered") or contains("Live") or contains("Peel") | not)
         | [.duration, .name] | @csv' \
  | awk -F ',' -v totalDuration=$DURATION_MS '{
        hours = ($1 / 1000) % 3600 / 60;
        minutes = ($1 / 1000) % 60;
        sum += $1;
        printf "%-40s %dm:%ds\n", $2, hours, minutes;
        if (sum > totalDuration) { exit }
    }'