#!/bin/sh

# Checks the source, about, commit and email filters, which hand a piece of
# page content to an outside program before it is written out. The whole
# body runs once per kind of filter, the exec kind always and the lua kind
# only where cgit was built with lua, because both have to produce the same
# page from the same repository.

test_description='Check filtered content'
. ./setup.sh

prefixes="exec"
if test "$CGIT_HAS_LUA" -eq 1
then
	prefixes="$prefixes lua"
fi

for prefix in $prefixes
do
	test_expect_success "generate filter-$prefix/tree/a%2bb" "
		cgit_url 'filter-$prefix/tree/a%2bb' >tmp
	"

	test_expect_success "check whether the $prefix source filter works" '
		grep "<code>a+b HELLO$" tmp
	'

	test_expect_success "generate filter-$prefix/about/" "
		cgit_url 'filter-$prefix/about/' >tmp
	"

	test_expect_success "check whether the $prefix about filter works" '
		grep "<div id='"'"'about'"'"'>a+b /filter-$prefix/tree/  HELLO$" tmp
	'

	test_expect_success "generate filter-$prefix/commit/" "
		cgit_url 'filter-$prefix/commit/' >tmp
	"

	test_expect_success "check whether the $prefix commit filter works" '
		grep "<div class='"'"'commit-subject'"'"'>ADD A+B" tmp
	'

	test_expect_success "check whether the $prefix email filter works for authors" '
		grep "<author@example.com> commit A U THOR &LT;AUTHOR@EXAMPLE.COM&GT;" tmp
	'

	test_expect_success "check whether the $prefix email filter works for committers" '
		grep "<committer@example.com> commit C O MITTER &LT;COMMITTER@EXAMPLE.COM&GT;" tmp
	'

	# Page output is buffered and has to be flushed as stdout is handed
	# to a filter and back. A missed flush reorders the page rather than
	# losing any of it, so the two tests below watch which side of the
	# filtered text the surrounding markup lands on.
	test_expect_success "the $prefix source filter output stays inside its cell" "
		cgit_url 'filter-$prefix/tree/a%2bb' >tmp &&
		tr -d '\n' <tmp >flat.out &&
		grep '<code>a+b HELLO</code>' flat.out
	"

	test_expect_success "the $prefix about filter output stays inside its div" "
		cgit_url 'filter-$prefix/about/' >tmp &&
		grep \"<div id='about'>a+b /filter-$prefix/tree/  HELLO\" tmp
	"
done

# A readme read at another branch links into the tree at that branch, which
# the filter is told as the query to follow a path with.
test_expect_success 'the about filter gets the tree url at the readme branch' '
	{
		echo "virtual-root=/" &&
		echo "cache-size=0" &&
		echo "readme=:a+b" &&
		echo "about-filter=exec:$FILTER_DIRECTORY/dump.sh" &&
		echo "root-readme=$PWD/root.txt" &&
		echo "repo.url=filtered" &&
		echo "repo.path=$PWD/repos/filter/.git"
	} >aboutargsrc &&
	CGIT_CONFIG="$PWD/aboutargsrc" QUERY_STRING="url=filtered/about/&h=1%2b2" cgit >tmp &&
	grep "<div id=.about.>a+b /filtered/tree/ ?h=1%2B2 HELLO" tmp
'

test_expect_success 'the site readme leaves the tree url empty' '
	echo site >root.txt &&
	CGIT_CONFIG="$PWD/aboutargsrc" QUERY_STRING="p=about" cgit >tmp &&
	grep "root.txt   SITE" tmp
'

test "$CGIT_HAS_LUA" -eq 1 && test_set_prereq CGIT_LUA
test "$CGIT_HAS_LUA" -eq 1 || say 'cgit built without lua, error page check skipped'

# A die inside a lua filter has to reach the visitor as an error page rather
# than being fed back into the filter that just failed, and the reason goes to
# the log.
test_expect_success CGIT_LUA 'a failing lua filter still renders an error page' '
	cat >broken.lua <<-\EOF &&
	function filter_open(...) error("boom") end
	function filter_write(str) end
	function filter_close() return 0 end
	EOF
	{
		echo "cache-size=0" &&
		echo "repo.url=foo" &&
		echo "repo.path=$PWD/repos/foo/.git" &&
		echo "auth-filter=lua:$PWD/broken.lua"
	} >brokenrc &&
	CGIT_CONFIG="$PWD/brokenrc" QUERY_STRING="url=foo/commit" cgit >tmp 2>err &&
	grep "Status: 500" tmp &&
	grep "Lua error in" err
'

test_done