package models

import (
	"html/template"
	"testing"

	dmp "github.com/sergi/go-diff/diffmatchpatch"
	"github.com/stretchr/testify/assert"
)

func assertEqual(t *testing.T, s1 string, s2 template.HTML) {
	if s1 != string(s2) {
		t.Errorf("%s should be equal %s", s2, s1)
	}
}

func assertLineEqual(t *testing.T, d1 *DiffLine, d2 *DiffLine) {
	if d1 != d2 {
		t.Errorf("%v should be equal %v", d1, d2)
	}
}

func TestDiffToHTML(t *testing.T) {
	assertEqual(t, "+foo <span class=\"added-code\">bar</span> biz", diffToHTML([]dmp.Diff{
		{Type: dmp.DiffEqual, Text: "foo "},
		{Type: dmp.DiffInsert, Text: "bar"},
		{Type: dmp.DiffDelete, Text: " baz"},
		{Type: dmp.DiffEqual, Text: " biz"},
	}, DiffLineAdd))

	assertEqual(t, "-foo <span class=\"removed-code\">bar</span> biz", diffToHTML([]dmp.Diff{
		{Type: dmp.DiffEqual, Text: "foo "},
		{Type: dmp.DiffDelete, Text: "bar"},
		{Type: dmp.DiffInsert, Text: " baz"},
		{Type: dmp.DiffEqual, Text: " biz"},
	}, DiffLineDel))
}

func TestDiff_LoadComments(t *testing.T) {
	assert.NoError(t, PrepareTestDatabase())
	issue := AssertExistsAndLoadBean(t, &Issue{ID: 2}).(*Issue)
	user := AssertExistsAndLoadBean(t, &User{ID: 1}).(*User)
	diff := &Diff{
		Files: []*DiffFile{
			{
				Name: "README.md",
				Sections: []*DiffSection{
					{
						Lines: []*DiffLine{
							{
								LeftIdx:  4,
								RightIdx: 4,
							},
						},
					},
				},
			},
		},
	}
	assert.NoError(t, diff.LoadComments(issue, user))
	assert.Len(t, diff.Files[0].Sections[0].Lines[0].Comments, 2)
}