#!/bin/bash

# TODO replace `zenity` with `wofi`

# Required settings
host=192.168.2.66
port=8080

# Optional login for Kodi
user=kodi
pass=kodi

# Settings for netcat (local file)
local_hostname=$(hostname)
local_port=12345

show_help()
{
    cat<<EOF
Sends a video URL to Kodi
Usage: send-to-kodi.sh [URL]

If no URL is given, a dialog window is shown (requires zenity).

Supports:
Common file formats (mp4,flv,mp3,jpg and more)
Youtube (requires the Youtube plugin in Kodi)
Local media streaming (via netcat)
Manny more sites (requires youtube-dl)

Configuration is done in the head of the script.

EOF
}

error()
{
    if type zenity &>/dev/null; then
        zenity --error --ellipsize --text "$*"
    else
        echo "$*" 1>&2
    fi

    exit 1
}

send_json()
{
    curl \
    ${user:+--user "$user:$pass"} \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"Player.Open","params":{"item":{"file":"'"$1"'"}},"id":1}' \
    http://$host:$port/jsonrpc \
    || error "Failed to send link - is Kodi running?"
}

ytplugin='plugin://plugin.video.youtube/?action=play_video&videoid='

[[ $host && $port ]] || error "Please set host and port in configuration"
[[ "$1" = --help ]] && show_help

# Dialog box?
input=$1
until [[ $input ]]; do
    input="$(zenity --entry --title "Send to Kodi" --text \
        "Paste a video link here")" || exit
done

if [[ $input =~ ^file:// ]]; then
    # Remove file:// and carrige return (\r) at the end
    input="$(sed 's%^file://%%;s/\r$//' <<< "$input")"
fi

# Get URL for...

# Local media
if [[ -e $input ]]; then
    type nc &>/dev/null || error "netcat required"
    [[ $local_hostname && $local_port ]] || \
        error "Please set local hostname and port in configuration"

    # Start netcat in background and kill it when we exit
    nc -lp $local_port < "$input" &
    trap "kill $!" EXIT

    url="tcp://$local_hostname:$local_port"

# youtube.com / youtu.be
elif [[ $input =~ ^https?://(www\.)?youtu(\.be/|be\.com/watch\?v=) ]]; then
    url="$ytplugin$(\
        sed 's/.*\(youtu\.be\/\|[&?]v=\)\([a-zA-Z0-9_-]\+\).*/\2/'\
        <<< "$input"\
    )"

# Playable formats
elif [[ $input =~ \.(mp4|mkv|mov|avi|flv|wmv|asf|mp3|flac|mka|m4a|aac|ogg|pls|jpg|png|gif|jpeg|tiff)(\?.*)?$ ]]; then
     url="$input"

# Youtube-dl
else
    type youtube-dl &>/dev/null || error "youtube-dl required"
    url="$(youtube-dl -gf best "$input")" || \
        error "No videos found, or site not supported by youtube-dl"
fi

[[ $url ]] && send_json "$url"

# Wait for netcat to exit
wait
# Don't kill netcat
trap - EXIT