#!/usr/bin/env sh

stop_file="/tmp/stop-select-videos-to-watch"

cleanup() {
    rm "$videos_file" 2>/dev/null
}
trap cleanup INT TERM

usage() {
    echo "Usage: $0 [-1] [-h] [-t] [-s]" 1>&2
    echo "" 1>&2
    printf "This is a program made to copy multimedia URLs into system clibboard
and play them through \$VIDEOPLAYER (if it is not set, mpv).\n" 1>&2
    printf "\t-1 Makes videos be played on a single instance of \$VIDEOPLAYER
instead of each one individually.\n" 1>&2
    printf "\t-t Toggle svw.\n" 1>&2
    printf "\t-s Stop svw from looking for clipboard changes.\n" 1>&2
    printf "\t-h (or any other flag) prints this help menu.\n" 1>&2
    exit 1
}

svw_toggle() {
    if [ ! -e "$stop_file" ]; then
        notify-send "Looking" "Select Video to Watch"
        svw
    else
        notify-send "Stop Looking"
        svw_stop
    fi
}

svw_stop() {
    xargs kill < "$stop_file"
    rm "$stop_file"
}

svw() {
    printf "%b\n" "" | xclip -i -selection clipboard

    if [ ! -f $stop_file ]; then
        touch $stop_file
    else
        notify-send "Error" "Already selecting"
        exit 1
    fi

    # While doesnt say to stop, continue
    while [ -f "$stop_file" ]
    do
        clipnotify &
        echo "$!" > "$stop_file"
        wait
        link="$(xclip -o -selection clipboard)"
        if [ -n "$link" ] && ! printf "%b\n" "$links" | grep -q "$link"
        then
            links="$links\n$link"
            echo "$link"
        fi
    done

    # Get first link and download
    videos_file="/tmp/selected-videos-to-watch$(date +%s)"

    if [ -n "$VIDEOPLAYER" ]; then
        player=$VIDEOPLAYER
    else
        player="mpv"
    fi

    [ -n "$links" ] &&
        if [ -n "$single" ]; then
            printf "%b\n" "$links" | tail -n +2 | xargs $player
        else
            printf "%b\n" "$links" | tail -n +2 | xargs -L1 $player
        fi

    rm "$videos_file" 2>/dev/null
}

while getopts ":1ts" option; do
    case "${option}" in
        1)
            single="1"
            ;;
        t)
            command_to_run="svw_toggle"
            ;;
        s)
            command_to_run="svw_stop"
            ;;
        *)
            command_to_run="usage"
            ;;
    esac
done
shift $((OPTIND-1))

[ -z "$command_to_run" ] && command_to_run="svw"

$command_to_run