#!/bin/sh

sweep(){
	# clear old data/prepare for first run
	rm -rf temp
	mkdir temp
}
sweep

# retrieve filtered LMR shoutbox data and separate shouts into individual files (cut.1, cut.1, etc) in the temp directory
get_html(){
	nmbr=1	# used in cut file filenames
	python sbx.py	# run python script to get data
	awk '{f = "temp/cut." NR; print $0 > f; close(f)}' filtered	# splits master file into separate numbered files at new lines
}

get_html
make_page(){
	troff -a temp/cut.$nmbr > temp/cut_f2	# convert Nroff format text to ASCII text
	sed 1d temp/cut_f2 > temp/cut_f3	# first line is garbage; cut it out of file
	if [ $nmbr -eq 1 ] ;	then					#first cut has leading characters to remove
		#FILENAME=temp/cut_f3					# measure byte size
		#FILESIZE=$(stat -c%s "$FILENAME")			
		cut -c 13-$FILESIZE temp/cut_f3 > temp/page_t	# trim from name start to end of file
	else
		rm temp/page_t			# subsequent shouts only have the first garbage line
		mv temp/cut_f3 temp/page_t 	
	fi
	page=`cat temp/page_t`
}
make_page

# copy processed shout file into string variable
load_var(){
 raw_code=`cat temp/page_t`	
}

load_var

# remove starter filler. 

# An individual's shout is easy to isolate from the others and they all have the same structure:
# Username: Shout
# The colon will be used as the cutting point to separate the username from the shout itself

get_username(){
	# isolate username

	echo `expr index "$raw_code" : ` > temp/pos.txt	# get position of char : (directly follows username) and save to file
	pos=`cat temp/pos.txt`	# load : position from file to variable
	name_end=$(($pos + 1))	# adjusts variable value to use in setting username ending byte position
	cut -c 1-$name_end temp/page_t > username.txt	# trim username with colon from body and save to txt
	#echo $username		# debug
}
get_shout(){
	# isolate shout
	cut -c $name_end-$FILESIZE temp/page_t > shout.txt	# trims username from shout and saves shout txt file.
}


get_username

marker=/:/
# convert ":" to "says"
c2says(){
	sed -i 's/:/ says/g' username.txt
}

get_shout
c2says

# load username and shout data on files into variables for further processing
load_data(){
	username=`cat username.txt`
	shout=`cat shout.txt`
	# echo "$username"
	# echo "$shout"
}

load_data

speak_username(){
	espeak -ven/en-us -s 120 -f username.txt --stdout|aplay	# pipe to aplay prevents "stuttering"
}
speak_shout(){
	espeak -ven/en-us -s 120 -f shout.txt --stdout|aplay
}
speak_username
speak_shout

# save current data to archive files
save_data(){
	# echo $username > username_old.txt
	# echo $shout > shout_old.txt
	rm temp/bookmark_t
	cp temp/page_t temp/bookmark_t
	bookmark=`cat temp/bookmark_t`
}

save_data

say_it(){
	save_data
	load_var
	get_username
	get_shout
	c2says
	load_data
	speak_username
	speak_shout
}
sleep 20

# loop begins here <----------------
if [ -t 0 ]; then stty -echo -icanon time 0 min 0; fi
count=0
keypress=''
while [ "x$keypress" = "x" ]; do
	count=$(($count+1))	
	get_html	
	make_page	
	# compare first new shout with the last shout spoken
	if diff temp/page_t temp/bookmark_t >/dev/null ; then
		# same
		sleep 1
	else
		# different
		while [ true ]		# loop until index = 1
		do
			if diff temp/page_t temp/bookmark_t >/dev/null ; then
				# same
				nmbr=$(($nmbr-1))	# decrement cut file index to oldest new shout file
				make_page		# reload shout data
				say_it			# plays the shout
			else	
				# different
				nmbr=$(($nmbr+1))	# index next older shout file
				make_page		# create new file for next comparison
			fi
			if test $nmbr -eq 1		# if cut file 1 has played
			then
				break			# exit loop
			fi
		done
	fi
	sleep 20
	read keypress	# exits loop upon any keypress
done

if [ -t 0 ]; then stty sane; fi

echo "You pressed '$keypress' to stop this script after $count loop iterations"
exit 0