#!/bin/sh

# The commit page. Most checks read the markup for the tree link, the parent
# link, the subject and the diffstat.

test_description='Check content on commit page'
. ./setup.sh

test_expect_success 'generate foo/commit' 'cgit_ok_url "foo/commit" >tmp'
test_expect_success 'find tree link' '
	tree=$(git -C repos/foo rev-parse master^{tree}) &&
	test_grep "<th scope=.row.>tree</th><td colspan=.2. class=.oid.><div class=.spanning.><a href=./foo/tree/.>$tree</a>" tmp
'
test_expect_success 'find parent link' '
	parent=$(git -C repos/foo rev-parse master~1) &&
	test_grep "<th scope=.row.>parent</th><td colspan=.2. class=.oid.><div class=.spanning.><a href=./foo/commit/?id=$parent.>$parent</a>" tmp
'

test_expect_success 'subject links name a parent by its subject' '
	cgitrc_copy subjectrc enable-subject-links=1 &&
	parent=$(git -C repos/foo rev-parse master~1) &&
	cgit_ok subjectrc "url=foo/commit" >tmp &&
	test_grep "<th scope=.row.>parent</th><td colspan=.2. class=.oid.><div class=.spanning.><a href=./foo/commit/?id=$parent.>commit 4</a>" tmp
'

test_expect_success 'find commit subject' '
	grep "<div class=.commit-subject.>commit 5<" tmp
'

test_expect_success 'find commit msg' 'grep "<div class=.commit-msg.></div>" tmp'
test_expect_success 'find diffstat' 'grep "<table class=.diffstat.>" tmp'

test_expect_success 'find diff summary' '
	grep "1 file changed, 1 insertion, 0 deletions" tmp
'

# A strict CSP refuses an inline style, so the bar takes its widths from SVG
# attributes, which also leave the page valid.
test_expect_success 'the diffstat bar is an SVG sized by its attributes' '
	grep "<td class=.graph.><svg viewBox=.0 0 1000 1. preserveAspectRatio=.none. aria-hidden=.true.><rect class=.add. width=.1000. height=.1./></svg></td>" tmp
'

test_expect_success 'a commit that changes no files draws no diffstat table' '
	(
		cd repos/foo &&
		git update-ref refs/heads/empty $(git commit-tree HEAD^{tree} -p HEAD -m empty)
	) &&
	cgit_ok_url "foo/commit/&h=empty" >tmp &&
	grep "0 files changed, 0 insertions, 0 deletions" tmp &&
	test_grep ! "<table class=.diffstat.>" tmp
'

# A root commit has no parent, so it diffs against the empty tree.
test_expect_success 'a root commit diffs against the empty tree' '
	root=$(git -C repos/foo rev-list --max-parents=0 HEAD) &&
	cgit_ok_url "foo/commit&id=$root" >tmp &&
	test_grep "<a href=./foo/diff/file-1.id=$root.>file-1</a>" tmp &&
	test_grep ">diff --git a/file-1 b/file-1<" tmp &&
	test_grep "<div class=.add.>+1</div>" tmp
'

# A message that is not UTF-8, because its encoding header names something
# iconv cannot convert or is missing altogether, would otherwise reach a
# page declared UTF-8 as it is, so its stray bytes become question marks.
test_expect_success 'a message that is not UTF-8 has its stray bytes replaced' '
	(
		cd repos/foo &&
		tree=$(git rev-parse HEAD^{tree}) &&
		printf "tree %s\nauthor A U Thor <author@example.com> 1735689600 +0000\n" "$tree" >raw &&
		printf "committer A U Thor <author@example.com> 1735689600 +0000\n" >>raw &&
		printf "encoding no-such-charset\n\ncaf\351 subject\n\nbody \377 end\n" >>raw &&
		cid=$(git hash-object --literally -t commit -w raw) &&
		git update-ref refs/heads/latin "$cid" &&
		printf "tree %s\nauthor A U Thor <author@example.com> 1735689600 +0000\n" "$tree" >raw &&
		printf "committer A U Thor <author@example.com> 1735689600 +0000\n" >>raw &&
		printf "\nbare caf\351 subject\n" >>raw &&
		cid=$(git hash-object --literally -t commit -w raw) &&
		git update-ref refs/heads/bare "$cid"
	) &&
	cgit_ok_url "foo/commit&h=latin" >tmp &&
	grep "<div class=.commit-subject.>caf? subject<" tmp &&
	grep "body ? end" tmp &&
	test_grep ! "caf$(printf "\351")" tmp &&
	cgit_ok_url "foo/commit&h=bare" >tmp &&
	test_grep "<div class=.commit-subject.>bare caf? subject<" tmp &&
	test_grep ! "caf$(printf "\351")" tmp
'

# The diff is taken against the first parent alone, which says little about
# a merge of three branches or more, so such a merge draws none and offers
# no diff options. A merge of two still draws its diff. Both merges take a
# tree their first parent lacks a file of, so a diff would have a row.
test_expect_success 'an octopus merge draws no diff and offers no diff options' '
	(
		cd repos/foo &&
		tree=$(git rev-parse HEAD~1^{tree}) &&
		cid=$(git commit-tree -p HEAD -p HEAD~1 -p HEAD~2 -m octopus $tree) &&
		git update-ref refs/heads/octopus "$cid" &&
		cid=$(git commit-tree -p HEAD -p HEAD~2 -m twofold $tree) &&
		git update-ref refs/heads/twofold "$cid"
	) &&
	cgit_ok_url "foo/commit&h=octopus" >tmp &&
	test_grep "<div class=.commit-subject.>octopus<" tmp &&
	test $(grep -c "<th scope=.row.>parent</th>" tmp) = 3 &&
	test_grep ! "cgit-panel" tmp &&
	test_grep ! "<table class=.diffstat.>" tmp &&
	cgit_ok_url "foo/commit&h=twofold" >tmp &&
	test $(grep -c "<th scope=.row.>parent</th>" tmp) = 2 &&
	test_grep "cgit-panel" tmp &&
	test_grep "<table class=.diffstat.>" tmp
'

test_expect_success 'the commit page offers a download per snapshot format' '
	cgit_ok_url "foo/commit" >tmp &&
	test_grep "<th scope=.row.>download</th><td colspan=.2. class=.oid.><div class=.spanning.><span class=.snapshot.><a href=./foo/snapshot/foo-master.tar.>foo-master.tar</a></span><br>" tmp &&
	test_grep "<a href=./foo/snapshot/foo-master.zip.>foo-master.zip</a>" tmp &&
	cgitrc_repo nosnaprc foo &&
	cgit_ok nosnaprc "url=foo/commit" >tmp &&
	test_grep "<th scope=.row.>tree</th>" tmp &&
	test_grep ! ">download</th>" tmp
'

test_expect_success 'a note is shown below the message' '
	git -C repos/foo notes add -m "a note on five" master &&
	test_when_finished "git -C repos/foo notes remove master" &&
	cgit_ok_url "foo/commit" >tmp &&
	test_grep "<div class=.notes-header.>Notes</div>" tmp &&
	test_grep "<div class=.notes.>a note on five$" tmp
'

test_done