#! /bin/bash 
# Copyright © 2006 Andrew Wigglesworth.
# ecadre@yahoo.co.uk | http://www.andrew-wigglesworth.co.uk
# 
# Modified to make script handle multiple url forms, or direct code.  It will also save final file to path relative to directory where script started.
# Copyright © 2007 Matthew Flaschen <matthew.flaschen@gatech.edu> 
#
# Copying and distribution of this file, with or without modification,
# is permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.
# ----------------------------------
#
# This line and below are not part of the copyright notice or licence.
#
# ytplay version 0.2-1 05/02/2008.
#
# Playing Youtube videos on gNewSense GNU/Linux
#
# usage:
#
# To play a Youtube video, go to the page  where the video is
# on Youtube.com and copy it's URL.
#
# ytplay http://www.youtube.com/watch?v=code_from_youtube
#
# to save the Youtube video to your desktop, use the following
#
# ytplay http://www.youtube.com/watch?v=code_from_youtube -o file_type file_name
#
# File type is either flv or theora.  File name is what you
# would like to call the downloaded file.  You do not need to
# add the .flv or .ogg extentions as these will be added automatically.
#
# The Youtube web pages may change their format at any time meaning that
# this script will have to be adapted.
#
# see http://www.ecadre.co.uk for more information.

mkdir ~/.ytplay

# clear up any old temporary files.  This is just housekeeping, not security.
rm -rf ~/.ytplay/ytplay.*

# create a random temporary directory.  Script will exit if directory already exists.
tmp="`mktemp -d -p  ~/.ytplay "ytplay.XXXXXXXX"`" || exit 1

# preserve original directory
origDir=$(pwd)

cd $tmp

baseUrl="http://www.youtube.com/watch?v="

#Assume code given directly
if [[ $(expr match $1 'http') -eq 0 ]]; then
    url=$baseUrl$1
else
    #This form of url is used for embedded flash objects
    embedId=$(expr match $1 'http\:\/\/www\.youtube\.com\/v\/')
    if [[ $embedId -gt 0 ]]; then
	url=$baseUrl${1:$embedId}
    else
	url=$1
    fi
fi

wget $url -O yt-extract.txt
grep /watch_fullscreen?fs yt-extract.txt >> yt-extract2.txt
sed -e 's/var fs = window.open(//g' -e 's/watch_fullscreen//g' -e 's/ //g' -e 's/	//g'  -e 's/"//g' yt-extract2.txt >> yt-extract3.txt
read ytdownload<yt-extract3.txt

if [[ "$2" = "-o" ]]; then
	if [[ $3 = "flv" ]]; then
		if [ -n "$4" ]; then	
			wget http://youtube.com/get_video.php$ytdownload -O yt.flv
			cd $origDir
			cp $tmp/yt.flv $4.flv
			rm -rf $tmp
		else
		echo error: please specify a file name; exit 0
		fi
	else
		if [[ $3 = "theora" ]]; then
			if [ -n "$4" ]; then
				wget http://youtube.com/get_video.php$ytdownload -O yt.flv
				ffmpeg2theora yt.flv
				cd $origDir
				cp $tmp/yt.ogg $4.ogg
				rm -rf $tmp
			else
			echo error: please specify a file name; exit 0
			fi
		else
		echo error 2: please specify file type - flv or theora; exit 0
		fi
	fi
else
	wget http://youtube.com/get_video.php$ytdownload -O yt.flv
	ffplay yt.flv
	rm -rf $tmp
fi

exit 0