# Shared groundwork sourced by every test script. It builds a handful of small
# repositories under repos/ and writes a cgitrc pointing at them, then offers
# the helpers that ask cgit for a page so a test only has to look at what comes
# back. Sourcing it also brings in the test library from the bundled Git tree,
# which is where test_expect_success and the trash directory come from. Set
# CGIT_TEST_NO_CREATE_REPOS to get the helpers without paying for the fixtures.

# The Git test library would run every Git command under Valgrind if it saw
# --valgrind, and only cgit itself is worth watching, so the option is taken out
# here and acted on further down. The arguments are carried across as a newline
# separated list, which keeps any other whitespace in them intact but assumes
# that none holds a newline of its own.
LF='
'
test_argv=

while test $# != 0
do
	case "$1" in
	--va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
		cgit_valgrind=t
		test_argv="$test_argv${LF}--verbose"
		;;
	*)
		test_argv="$test_argv$LF$1"
		;;
	esac
	shift
done

OLDIFS=$IFS
IFS=$LF
set -- $test_argv
IFS=$OLDIFS

: ${TEST_DIRECTORY=$(pwd)/../vendor/git/t}
: ${TEST_OUTPUT_DIRECTORY=$(pwd)}
# The library would otherwise leave a repository of its own in the trash
# directory, and every repository these tests want is built by mkrepo below.
TEST_NO_CREATE_REPO=YesPlease
. "$TEST_DIRECTORY"/test-lib.sh

# The tests run cgit by name, so the binary just built has to come ahead of any
# copy already installed. Under Valgrind the wrappers take that place instead.
if test -n "$cgit_valgrind"
then
	GIT_VALGRIND="$TEST_DIRECTORY/valgrind"
	CGIT_VALGRIND=$(cd ../valgrind && pwd)
	PATH="$CGIT_VALGRIND/bin:$PATH"
	export GIT_VALGRIND CGIT_VALGRIND
else
	PATH="$(pwd)/../../build:$PATH"
fi

FILTER_DIRECTORY=$(cd ../filters && pwd)

# Lua filters only work when cgit was compiled with Lua, so the tests that use
# them have to ask the binary rather than assume.
if cgit --version | grep -F -q "[+] Lua scripting"; then
	export CGIT_HAS_LUA=1
else
	export CGIT_HAS_LUA=0
fi

# Creates a repository holding the given number of one file commits. A third
# argument asks for a variant, either testplus for a file and a branch whose
# names have to be escaped in a URL, or commit-graph for a written commit graph.
mkrepo() {
	repo=$1
	commits=$2
	variant=$3
	test_create_repo "$repo"
	(
		cd "$repo"
		n=1
		while test $n -le $commits
		do
			echo $n >file-$n
			git add file-$n
			git commit -m "commit $n"
			n=$(expr $n + 1)
		done
		case "$variant" in
		testplus)
			echo "hello" >a+b
			git add a+b
			git commit -m "add a+b"
			git branch "1+2"
			;;
		commit-graph)
			git commit-graph write
			;;
		esac
	)
}

setup_repos()
{
	rm -rf cache
	mkdir -p cache
	mkrepo repos/foo 5 >/dev/null
	mkrepo repos/bar 50 commit-graph >/dev/null
	mkrepo repos/foo+bar 10 testplus >/dev/null
	mkrepo "repos/with space" 2 >/dev/null
	mkrepo repos/filter 5 testplus >/dev/null
	cat >cgitrc <<EOF
virtual-root=/
cache-root=$PWD/cache

cache-size=1021
enable-cache-list=1
snapshots=tar.gz tar.bz tar.lz tar.xz tar.zst zip
enable-log-filecount=1
enable-log-linecount=1
summary-log=5
summary-branches=5
summary-tags=5
clone-url=git://example.org/\$CGIT_REPO_URL.git
enable-filter-overrides=1

repo.url=foo
repo.path=$PWD/repos/foo/.git
# Do not specify a description for this repo, as it then will be assigned
# the constant value "[no description]" (which actually used to cause a
# segfault).

repo.url=bar
repo.path=$PWD/repos/bar/.git
repo.desc=the bar repo

repo.url=foo+bar
repo.path=$PWD/repos/foo+bar/.git
repo.desc=the foo+bar repo

repo.url=with space
repo.path=$PWD/repos/with space/.git
repo.desc=spaced repo

repo.url=filter-exec
repo.path=$PWD/repos/filter/.git
repo.desc=filtered repo
repo.about-filter=exec:$FILTER_DIRECTORY/dump.sh
repo.commit-filter=exec:$FILTER_DIRECTORY/dump.sh
repo.email-filter=exec:$FILTER_DIRECTORY/dump.sh
repo.source-filter=exec:$FILTER_DIRECTORY/dump.sh
repo.readme=master:a+b
EOF

	if [ $CGIT_HAS_LUA -eq 1 ]; then
		cat >>cgitrc <<EOF
repo.url=filter-lua
repo.path=$PWD/repos/filter/.git
repo.desc=filtered repo
repo.about-filter=lua:$FILTER_DIRECTORY/dump.lua
repo.commit-filter=lua:$FILTER_DIRECTORY/dump.lua
repo.email-filter=lua:$FILTER_DIRECTORY/dump.lua
repo.source-filter=lua:$FILTER_DIRECTORY/dump.lua
repo.readme=master:a+b
EOF
	fi
}

cgit_query()
{
	CGIT_CONFIG="$PWD/cgitrc" QUERY_STRING="$1" cgit
}

cgit_url()
{
	CGIT_CONFIG="$PWD/cgitrc" QUERY_STRING="url=$1" cgit
}

# The response headers run down to the first empty line, and a test comparing
# two pages wants to see the bodies alone.
strip_headers() {
	while read -r line
	do
		test -z "$line" && break
	done
	cat
}

test -z "$CGIT_TEST_NO_CREATE_REPOS" && setup_repos