#!/bin/sh

# Settings
client="ass"
url=""
user=""
password=""

# Checks if the last retrieved album has changed.
check_album(){
  cache_folder="$HOME/.cache/$client"
  cache_file="$cache_folder/list"
  mkdir -p "$cache_folder" && touch "$cache_file"

  album="$(tail -n 1 "$cache_file")"
  if [ "$album" = "$1" ]; then
    exit
  else
    printf "%s\n" "$1" | tee -a "$cache_file"
    printf "%s\n" "$url/library/albums/$latest_albumid"
    printf "%s\n" "$latest_albumcv"
    exit
  fi
}

# Get album catalog number if it's available (Requires proper tags).
get_cn(){
  album="$(echo "$@" | tr -d '()[]')"
  # Try looking up directly. (Should be accurate)
  curl -sL "https://vgmdb.net/search?" --data-urlencode "q=$album" | \
    grep -A1 "Catalog Number" | tail -n1 | \
    sed 's/<[^>]*>//g' | sed 's/^[ \t]*//;s/[ \t]*$//'
  
  # If multiple albums were found choose the first one. (Not accurate)
  curl -s "https://vgmdb.net/search?" --data-urlencode "q=$album" | \
    grep -o '<span class="catalog album-bonus">[^<]*' | \
    sed 's/.*>//' | grep -v '^N/A$' | head -n1
}

# Get the latest recently added album with curl in "Artist - Album" format.
get_album(){
  curl -s "$url/rest/getAlbumList2.view?u=$user&p=$password&v=1.16.1&c=$client&f=json&type=newest" | \
    jq -r '.["subsonic-response"].albumList2.album[0] | "\(.artist) - \(.name)"'
}

# Same thing but with album id.
get_albumid(){
  curl -s "$url/rest/getAlbumList2.view?u=$user&p=$password&v=1.16.1&c=$client&f=json&type=newest" | \
    jq -r '.["subsonic-response"].albumList2.album[0].id' 
}

# Get album cover (kinda unsafe for my standards, should work with public instances lmao)
get_albumcv(){
  echo "$url/rest/getCoverArt.view?id=$latest_albumid&u=$user&p=$password&v=1.16.1&c=$client&f=json"
}

latest_album="$(get_album)"
latest_albumid="$(get_albumid)"
latest_albumcv="$(get_albumcv)"
album_name="$(echo "$latest_album" | sed 's/^[^-]* - //')"
catalog_number=$(get_cn "$album_name" | sed 's/[[:space:]]*$//' | tr -d '\r' | sed 's/[^[:print:]\t]//g')

if [ -n "$catalog_number" ]; then
  check_album "$(printf "%s [%s]\n" "$latest_album" "$catalog_number")"
else
  check_album "$latest_album"
fi