#! /bin/sh

t=__wt.$$
trap 'rm -f $t; exit 0' 0 1 2 3 13 15

# Skip this when building release packages: docs are built separately
test -n "$WT_RELEASE_BUILD" && exit 0

# We require doxygen which may not be installed.
type doxygen > /dev/null 2>&1 || {
	echo 'skipped: doxygen not found'
	exit 0
}

. ../RELEASE

e=0

changelog()
{
	# convert the top-level NEWS file into a change log page in the docs
	(echo "WiredTiger Change Log"
	 echo "====================="
	 echo
	 cat ../NEWS) > ../src/docs/changelog.md
}

sectionchk()
{
	# sections are a global name space for doxygen, and must be uniquely
	# named or you can get the wrong results.  For example, if you have
	# "@section foo ABC" and "@section foo DEF", they will both appear as
	# "ABC" or "DEF".
	(cd ../src/docs &&
	egrep -h '@section' *.dox |
	sort -u | awk '{ print $2 }' | sort | uniq -d) > $t
	test -s $t && {
		echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-="
		echo '@section references that are not uniquely named'
		sed -e 's/^/	/' < $t
		echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-="
		e=1
	}
}

spellchk()
{
	# If aspell has been installed, run a spell check.
	type aspell > /dev/null 2>&1 || return

	(cd ../src/docs &&
	cat *.dox | aspell --lang=en --personal=./spell.ok list) |
	sort -u > $t
	test -s $t && {
		echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-="
		echo 'Documentation spelling notes'
		echo 'Update src/docs/spell.ok to remove warnings.'
		sed -e 's/^/	/' < $t
		echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-="
		e=1
	}
}

valid_build()
{
	# Complain if there are pages we don't reference directly.
	sed -n '/<table.*directory/,/\/table/p' < ../docs/pages.html | \
	    grep href > /dev/null && {
		echo 'Unreferenced page: see docs/pages.html for the list.'
		e=1
	}
}

build()
{
	# Build from scratch on demand.
	[ "$1" -eq 0 ] || (cd .. && rm -rf docs && mkdir docs)

	# Run doxygen to generate warnings for the base HTML documentation.
	#
	# We omit Python because warnings are expected there (the code generated
	# by swig does not have named arguments, but we want to document them
	# as if they do.
	(cd ../src/docs &&
	    (eval cat Doxyfile $filter ; cat <<EOF
QUIET=YES
EOF
) | doxygen -
	test -s doxygen.log && cat doxygen.log) > $t 2>&1
	test -s $t && {
		cat $t
		e=1
	}

	# Add optional extras
	EXTRAS="../lang/java/src/com/wiredtiger/db ../lang/python/wiredtiger.py"
	EXTRA_INPUT=""
	for f in $EXTRAS ; do
		[ -e "$f" ] && EXTRA_INPUT="$EXTRA_INPUT ../$f"
	done

	# Run again to generate the full doc set with Python and Java.
	[ "$additional_languages" -eq 1 ] && [ "x$EXTRA_INPUT" != "x" ] && (
	cd ../src/docs &&
		(eval cat Doxyfile $filter ; cat <<EOF
QUIET=YES
INPUT+=$EXTRA_INPUT
EOF
) | doxygen -)

	# Fix up bad links doxygen generates in navtree.js
	(cd ../docs &&
	    sed -i~ -e 's,/\.html,/,' -e 's,\.html\.html,.html,' navtree.js &&
	    rm -f navtree.js~)

	# Fixup the man pages generated by Doxygen. We want the command line
	# documentation to be the main man page, but also install a man page
	# for the WiredTiger header into the library section.
	[ "$additional_languages" -eq 1 ] &&
	(cd ../docs && mkdir -p man/man1 &&
	    mv man/man3/command_line.3 man/man1/wt.1 &&
	    sed -i~ -e 's/command_line/wt/g' man/man1/wt.1 &&
	    rm -f man/man1/wt.1~ &&
	    mv man/man3/basic_api.3 man/ && rm -f man/man3/* &&
	    mv man/basic_api.3 man/man3/wiredtiger.3 &&
	    sed -i~ -e 's/basic_api/WiredTiger/g' man/man3/wiredtiger.3 &&
	    rm -f man/man3/wiredtiger.3~)
}

clean=0
additional_languages=1
filter="|sed '/PROJECT_NUMBER/s,=.*,=\"Version $WIREDTIGER_VERSION\",'"
while :
	do case "$1" in
	-a)	# Build from scratch
		clean=1
		shift;;
	-l)	# Generate the top-level landing page in ../docs/top
		filter="$filter| sed '/GENERATE_MAN/s,=.*,=NO,';"
		filter="$filter cat top/Doxyfile"
		additional_languages=0
		shift;;
	-p)	# Generate PDFs
		filter="$filter| sed '/GENERATE_LATEX/s,=.*,=YES,'"
		shift;;
	-t)	# Include the TODO list
		filter="$filter| sed '/GENERATE_TODOLIST/s,=.*,=YES,'"
		shift;;
	*)
		break;;
	esac
done

# Generate the change log
changelog

# Spell and section-name check the documentation.
spellchk
sectionchk

# Build the documentation.
build $clean

# Any post-build validity checks we want to make.
valid_build

exit $e