#####################
# Name: yt-playlist
# Lisc: ISC
# Main: jadedctrl
# Desc: List a playlist's videos
#       in easy-to-read and easy-to
#       -parse results
#####################

# Usage: yt-playlist "$playlist_ID"

if [ -e $HOME/.config/shelltube ]
then
    . $HOME/.config/shelltube
else
    results=21
fi

if [ -e "./lib/yt-meta" ]
then
    alias yt-channel="./lib/yt-channel"
    alias yt-search="./lib/yt-down"
    alias yt-meta="./lib/yt-meta"
    alias yt-search="./lib/yt-search"
    alias yt-down="./lib/yt-channel"
    alias st-download="./lib/st-download"
    alias st-video="./lib/st-video"
fi

row=0

if [ "$1" == "-i" ]
then
    interactive_mode=1
    plist="$(echo "$2" | sed 's/ /+/g')"
    output="$3"
else
    interactive_mode=0
    plist="$(echo "$1" | sed 's/ /+/g')"
fi

function get_input() {
    printf '\033[0;32m>>>\033[0m '
    read -r n

    if [ "$n" == "exit" ]
    then
        exit
    fi

    test $n -ge 0 &> /dev/null

    if [ $? -gt 1 ] 
    then
        echo "Bad input, mate. Type in a valid number or 'exit'."
        get_input
    elif [ $n -gt 20 ]
    then
        echo "Out of range. Type in a valid number or 'exit'."
        get_input
    elif [ $n -gt 0 ] && [ $n -lt 20 ]
    then
        sed -n ${n}p $temp_file | sed 's/.*data-video-id="//' | sed 's/".*//' > $output
    else
        echo "Bad input, mate. Type in a valid number or 'exit'."
        get_input
    fi
}

# If Google adds any extra features or changes the webpage
# layout, this script'll break immediately, haha.
# ... But at least we aren't using their API, right?

plist_file="/tmp/$(mktemp -u yt-search_XXXXXX)"

st-download https://youtube.com/playlist?list=$plist $plist_file

# Now for displaying the search results
temp_file="/tmp/$(mktemp -u yt-result_XXXXXX)"
grep "<tr class=\"pl-video yt-uix-tile \"" $plist_file > $temp_file

item_num=0
cat $temp_file | while IFS='' read -r CUR_LINE
do 
    item_num=$(($item_num+1))

    if [ $row -eq 1 ]
    then
        #color='\033[1;34m'
        #color2='\033[1;34m'
        printf '\033[1;34m'
        row=0
    elif [ $row -eq 0 ]
    then
        #color='\033[1;31m'
        #color2='\033[1;31m'
        printf '\033[1;31m'
        row=1
    fi

    itemid=$(echo "$CUR_LINE" | sed 's/.*data-video-id="//' | sed 's/".*//')
    title=$(echo "$CUR_LINE" | sed 's/.*data-title="//' | sed 's/".*//')
    author=$(grep -C3 "      $(echo $title)" "$plist_file" | grep "by <a href=" | sed 's/by.* >//' | sed 's/<\/a>.*//')
    duration=$(grep -C9 "      $(echo $title)" "$plist_file" | grep "<td class=\"pl-video-badges\">" | sed 's/.*">//' | sed 's^</span>.*^^')

    if [ $item_num -ge $((results+1)) ]
    then
        break
    elif [ $item_num -lt 10 ]
    then
        printf '%s.  ' "$item_num"
    else
        printf '%s. ' "$item_num"
    fi
    printf '%s\n' "$title"
    printf '    '
    i=0
        while [ $i -lt 16 ]
        do
            i=$((i+1))
            char=$(echo $author | cut -c$i)
            if [ -z $char ]
            then
                printf ' '
            else
                printf '%s' "$char"
            fi
        done
        printf ' | '
        i=0
        while [ $i -lt 5 ]
        do
            i=$((i+1))
            char=$(echo $duration | cut -c$i)
            if [ -z $char ]
            then
                printf ' '
            else
                printf '%s' "$char"
            fi
        done
        printf ' | %s\n' "$itemid"
done

printf '\033[0m'

if [ $interactive_mode -eq 1 ]
then
    get_input
fi