#!/bin/sh

test_description='Check the ref listing and diff size limits'
. ./setup.sh

if [ $CGIT_HAS_LUA -eq 1 ]; then
	test_set_prereq LUA
fi

# A repo with several branches and tags, one commit with an oversized file
# diff beside a small one, and configs that pin tiny limits.
test_expect_success 'set up limit fixtures' '
	mkrepo repos/limits 1 &&
	(
		cd repos/limits &&
		seq 1 60 >big.c &&
		printf "int x;\n" >small.c &&
		git add -A &&
		git commit -m sources &&
		seq 301 360 >big.c &&
		printf "int y;\n" >small.c &&
		git commit -am change &&
		for i in 1 2 3; do git branch branch-$i || exit 1; done &&
		for i in 1 2 3; do git tag tag-$i || exit 1; done
	) &&
	{
		echo "virtual-root=/" &&
		echo "cache-size=0" &&
		echo "max-ref-count=2" &&
		echo "max-diff-lines=20" &&
		echo "max-diff-files=0" &&
		echo "repo.url=limits" &&
		echo "repo.path=$PWD/repos/limits/.git"
	} >limitrc &&
	{
		echo "virtual-root=/" &&
		echo "cache-size=0" &&
		echo "max-diff-files=1" &&
		echo "repo.url=limits" &&
		echo "repo.path=$PWD/repos/limits/.git"
	} >limitfilesrc
'

limitq() { CGIT_CONFIG="$PWD/limitrc" QUERY_STRING="$1" cgit; }

# --- The refs page caps each section and links to the category pages --------
test_expect_success 'refs page lists max-ref-count branches and tags' '
	limitq "url=limits/refs/" >tmp &&
	test $(grep -c "log/?h=" tmp) -eq 2 &&
	test $(grep -c "/tag/?h=tag-" tmp) -eq 2
'

test_expect_success 'refs page links each overflow to its own category' '
	grep "refs/heads" tmp &&
	grep "refs/tags" tmp
'

test_expect_success 'branch page paginates independently' '
	limitq "url=limits/refs/heads/" >tmp &&
	test $(grep -c "log/?h=" tmp) -eq 2 &&
	grep "\[next\]" tmp &&
	limitq "url=limits/refs/heads/&ofs=2" >tmp &&
	grep "\[prev\]" tmp &&
	! grep "/tag/?h=tag-" tmp
'

test_expect_success 'tag page paginates independently' '
	limitq "url=limits/refs/tags/&ofs=2" >tmp &&
	grep "/tag/?h=tag-" tmp &&
	grep "\[prev\]" tmp &&
	! grep "log/?h=" tmp
'

# --- Oversized file diffs link out instead of rendering inline --------------
test_expect_success 'oversized file diff is replaced by a link' '
	limitq "url=limits/commit/" >tmp &&
	grep "too large to be rendered inline" tmp &&
	grep "View it on its own page" tmp
'

test_expect_success 'small file in the same commit still renders inline' '
	grep "class=.add.>+int y;" tmp
'

test_expect_success 'the single-file diff page always renders in full' '
	limitq "url=limits/diff/big.c" >tmp &&
	grep "class=.hunk." tmp &&
	! grep "too large to be rendered inline" tmp
'

# --- Commits over max-diff-files fall back to the diffstat ------------------
test_expect_success 'a commit changing too many files shows stat only' '
	CGIT_CONFIG="$PWD/limitfilesrc" QUERY_STRING="url=limits/commit/" cgit >tmp &&
	grep "too large to be rendered inline" tmp &&
	! grep "class=.hunk." tmp
'

test_expect_success 'the single-file page is not limited by max-diff-files' '
	CGIT_CONFIG="$PWD/limitfilesrc" QUERY_STRING="url=limits/diff/small.c" cgit >tmp &&
	grep "class=.hunk." tmp
'

# --- max-blob-size also bounds the diff path --------------------------------
# The diff family must not inflate a blob larger than max-blob-size just to
# render it. Such a file is reported as binary instead of inlined.
test_expect_success 'a diff of an oversized blob is not inlined' '
	mkrepo repos/blobdiff 1 &&
	(
		cd repos/blobdiff &&
		awk "BEGIN{for(i=0;i<400;i++)print \"aaaaaaaa\"}" >big.txt &&
		git add -A &&
		git commit -m add &&
		awk "BEGIN{for(i=0;i<401;i++)print \"aaaaaaaa\"}" >big.txt &&
		git commit -am change
	) &&
	{
		echo "virtual-root=/" &&
		echo "cache-size=0" &&
		echo "max-blob-size=1" &&
		echo "repo.url=blobdiff" &&
		echo "repo.path=$PWD/repos/blobdiff/.git"
	} >blobdiffrc &&
	sha=$(git -C repos/blobdiff rev-parse HEAD) &&
	CGIT_CONFIG="$PWD/blobdiffrc" QUERY_STRING="url=blobdiff/commit/&id=$sha" cgit >tmp &&
	grep "Binary files differ" tmp &&
	! grep "aaaaaaaa" tmp
'

# --- The shipped highlight filter degrades to escaped passthrough -----------
test_expect_success LUA 'highlight filter passes text through without scintillua' '
	{
		echo "virtual-root=/" &&
		echo "cache-size=0" &&
		echo "source-filter=lua:$(cd ../../extensions && pwd)/syntax-highlight.lua" &&
		echo "repo.url=limits" &&
		echo "repo.path=$PWD/repos/limits/.git"
	} >hlrc &&
	CGIT_SCINTILLUA_PATH=/nonexistent CGIT_CONFIG="$PWD/hlrc" \
		QUERY_STRING="url=limits/tree/small.c" cgit >tmp &&
	grep "int y;" tmp
'

test_done