#! /bin/tcsh -f
######################################################################
#
# Finds the PDF files on the website and assembles a list of 'em

set me=${0:t}		# name of this script
goto Start

######################################################################
Usage:
cat << END_INPUT
usage: $me:t 
Assembles a nicely formatted HTML file with a list of PDF files on the website.
END_INPUT
exit
######################################################################

Start:	
if ( ($# >= 1) ) then
	goto Usage
endif

# Abort if the required env variables aren't set 
if (! ${?HTML_DIR}) then
	echo ${me}: HTML_DIR environment variable not set\!
	exit
endif

set homeDir = ${HTML_DIR}
set resultFile = $homeDir/tech/download/pdf-list.html
set pathToRoot = "../.." # the path to $HTML_DIR from the resultFile
set tmpFile_0 = ~/tmp/${me}.tmpFile_0

if (! -e $resultFile) then
	echo ${me}: "Can't find file '$resultFile'\!"
	echo Goodbye.
	exit
endif

echo -n "${me}: building list of PDF files..."

# delete the old chunk from the file
ed -s $resultFile  << END_INPUT
/<!-- $me START -->/,/<!-- $me END -->/ d
i
<!-- $me START -->
<!-- $me END -->
.
w
Q
END_INPUT


cat << END_INPUT > $tmpFile_0
<!-- The following table was automatically generated by the shell script ${me}. -->
<table>
END_INPUT

cd $homeDir
set thePDF_List = `find . -name \*.pdf -print`
set noErr
set nTally=0
foreach PDF_file ($thePDF_List)		# suppose PDF_file = a/b/foo/bar.pdf
	set PDF_root = $PDF_file:r		# = a/b/foo/bar
	set HTML_file = ${PDF_root}.html	#  = a/b/foo/bar.html
	set INDEX_file = ${HTML_file:h}/index.html	# = a/b/foo/index.html
	set PDF_tail = $PDF_file:t		# = bar.pdf
	set theAnchor = "${INDEX_file}#$PDF_tail:r"
	
	if (! -e $HTML_file) then #if the HTML (bar.html) doesn't exist, then try bar/index.html
		set HTML_file = `echo $HTML_file | sed -e "s/\.html/\/index.html/"`
		if (! -e $HTML_file) then
			if (${?noErr}) then
				unset noErr
				echo ;
			endif
			echo "	***Skipping $PDF_file (can't find its associated HTML file)."
			continue
		endif
	endif
	@ nTally ++
	getHdrForPDF.pl $HTML_file $PDF_file $theAnchor $pathToRoot >> $tmpFile_0
end
# That's all for the table
echo "</table>" >> $tmpFile_0

#insert the new chunk into the files
ed -s $resultFile << END_INPUT > /dev/null
/<!-- $me START -->
.r $tmpFile_0
w
Q
END_INPUT

/bin/rm $tmpFile_0

if (${?noErr}) then
	echo " Found $nTally PDF files. Done."
else
	echo "${me}: Found $nTally PDF files. Done."
endif