#!/usr/bin/env bash
# shellcheck disable=SC2154
process_args() {
    while [ "$#" -ge 2 ]
    do
        printf -v "$1" "%s" "$2"
        shift
        shift
    done
}

#
escape(){
    local string
    string=$1
    string=${string//"<"/"&lt;"}
    string=${string//">"/"&gt;"}
    string=${string//"&"/"&amp;"}
    printf "%s" "$string"
}


main() {
    options=( --app-name=cmus --transient -u low)
    
    filename=${file##*/}
    image=${file%/*}/cover.jpg
    
    if [[ -f "$image" ]]; then 
        options+=( -i "${image}" )
    fi

    ## Get title or filename
    title=${title:-$filename}
    if [[ ${#title} -gt 25 ]]; then
        title="${title:0:24}…"
    fi
    title="<b>$title</b>"

    if [ -n "$artist" ]
    then
        if [[ ${#artist} -gt 22 ]]; then
            artist="${artist:0:21}…"
        fi
        printf -v l_artist "<span size='x-large'>by </span>%s" "$(escape "$artist")"
    fi

    if [ -n "$date" ]
    then
        date="${date%%-*}"
    fi

    # Get Album
    if [ -n "$album" ]
    then
        if [[ ${#album} -gt 19 ]]; then
            album="${album:0:19}…"
        fi
        printf -v l_album "<span size='x-large'>on </span>%-20s <span size='x-large'>%s</span>" "$(escape "$album")" "${date:-}"
    fi

    printf -v l_intro "<span variant='small-caps'>cmus:<b>%s</b></span>" "$(escape "$status")"
    printf -v body "%s\n" "${l_intro:-}" "${title:-}" "${l_artist:-}" "${l_album:-}"
    notify-send "${options[@]}"  "unseless" "$body"
}

process_args "$@"
main