#!/bin/sh
#
#	trading-shim.sh
#
#	used to populate the stock ticker crawlbox from cron
#
#	License: GPL, v.2
#	Original script may be viewed at: 
#		http://www.trading-shim.org/faq/trading-shim.sh.txt
#
#	/usr/bin/yahooquote is provided by 
#		perl-Finance-YahooQuote
#	which may be found for CentOS at:
#		ftp://ftp.owlriver.com/pub/mirror/ORC/smtm/
#	along with a README on build environment dependencies	
#
#	Run with a root crontab entries thus:
#		(the second gets the market close overnight values)
#
#	*/5 9-15 * * 1-5        /root/bin/trading-shim.sh
#	20  16   * * 1-5        /root/bin/trading-shim.sh
#
#	We produce the scroll marquee inside php code thus:
#
cat - << END > /dev/null

//
print "<table width=\"100%\"><tr><td width=\"15%\">&nbsp;</td>";
print "<td width=\"70%\" bgcolor=\"tan\">&nbsp;";
print "<tt><marquee>";
include ("result.inc");
$TIM = date("H:i");
print "Current time: $TIM     ";
print "</marquee></tt>&nbsp;</td><td width=\"15%\">&nbsp;</td></tr></table>";
//

END
#
DEST="/home/trading/public_html/template"
WORK=$DEST/work.inc
RESULT=$DEST/result.inc
#
DOW=`date +%u`
[ $DOW -lt 1 ] && exit 
[ $DOW -gt 5 ] && exit
HOD=`date +%k`
[ $HOD -lt 9 ] && exit
MOH=`date +%M`
[ $HOD -eq 9 -a $MOH -lt 31 ] && exit
#
#	ok -- we are building - go to it
> $WORK
[ $HOD -lt 16 ] && {
	date +"%A %d %B %Y %H:%M" >> $WORK
	echo " (delayed) ... " >> $WORK
	} || {
	date +"%A %d %B %Y" >> $WORK
	echo " (Market close) ... " >> $WORK
	}
# <sup>AMD</sup><sub><font color=\"green\" >24.46</font></sub> ...
for i in `grep -v ^# /root/bin/symbols | sort | uniq `; do
	NONCE=`/usr/bin/yahooquote $i | tr '\t' '#' | \
		awk -F# '{print $3}' `
#
#	awkwardly, sometimes we have too many digits right of the 
#	decimal point, and shell math is integer only
	LHS=`echo "${NONCE}"   | awk -F. '{print $1}'`
	RHS=`echo "${NONCE}00" | awk -F. '{print $2}' | cut -c -2`
	[ $HOD -gt 15 ] && {
		echo "${LHS}${RHS}" > $DEST/$i.prior
 		[ -e $DEST/$i.last ] && rm -f $DEST/$i.last
		}
#
	echo -n "<sup>$i</sup>" >> $WORK
	FONT="blue"
	[ -e $DEST/$i.prior ] && {
 		PC=` head -1 $DEST/${i}.prior `
		[ $PC -gt ${LHS}${RHS} ] && export FONT="red"
		[ $PC -lt ${LHS}${RHS} ] && export FONT="green"
		} || {
#
#	we cheat and populate any missing ones intra-day
		echo "${LHS}${RHS}" > $DEST/$i.prior
		}
	echo -n "<sub><font color=\"" >> $WORK
	echo -n "$FONT" >> $WORK
	echo -n "\" >${LHS}.${RHS}</font></sub>&nbsp;"  >> $WORK
#
#	last trade noted - only while the market is open
#	downarrow.gif  evenarrow.gif  uparrow.gif
	[ -e $DEST/$i.last -a $HOD -lt 16 ] && {
		echo -n "<img src=\"/art/">> $WORK
		TICK="blue"
		LT=` head -1 $DEST/${i}.last `
		[ $LT -gt ${LHS}${RHS} ] && {
			export TICK="red"
			echo -n "downarrow.gif" >> $WORK
			}
		[ $LT -lt ${LHS}${RHS} ] && {
			export TICK="green"
			echo -n "uparrow.gif" >> $WORK
			}
		[ "x${LT}" = "xblue" ] && {
			echo -m "evenarrow.gif" >> $WORK
			}
		echo "\">" >> $WORK
		}
	echo "&nbsp;..." >> $WORK
	echo "${LHS}${RHS}" > $DEST/$i.last
done
mv $WORK $RESULT
#