Mm-20223 Add webp emoji support (#20283)

* Added webp package into app/emoji.go , also added a test

* fixed import order inside emoji.go

* Ran go mod tidy

* Conversion to png for Webp emojis that must be resized is implemented

* Deleted unused import

* Added reading mechanism for webp instead of creating

* fileutils and filepath are used while reading a webp file during test

* Deleted readtestwebp function and put it in emoji_test as requested

* Added webp image upload test inside api4/file_test.go

* Expect image is changed from false to true

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

api4/emoji_test.go

@@ -7,6 +7,7 @@ import (
 	"bytes"
 	"image"
 	_ "image/gif"
+	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -92,6 +93,20 @@ func TestCreateEmoji(t *testing.T) {
 	require.Equal(t, newEmoji.Name, emoji.Name, "create with wrong name")
 	checkEmojiFile(newEmoji.Id, "gif")
 
+	// try to create a valid webp emoji
+	emoji = &model.Emoji{
+		CreatorId: th.BasicUser.Id,
+		Name:      model.NewId(),
+	}
+
+	path, _ := fileutils.FindDir("tests")
+	bytes, err := ioutil.ReadFile(filepath.Join(path, "testwebp.webp"))
+	require.NoError(t, err)
+	newEmoji, _, err = client.CreateEmoji(emoji, bytes, "image.webp")
+	require.NoError(t, err)
+	require.Equal(t, newEmoji.Name, emoji.Name, "create with wrong name")
+	checkEmojiFile(newEmoji.Id, "png") // emoji must be converted from webp to png
+
 	// try to create a valid jpeg emoji
 	emoji = &model.Emoji{
 		CreatorId: th.BasicUser.Id,

api4/file_test.go

@@ -453,6 +453,17 @@ func TestUploadFiles(t *testing.T) {
 			expectedImageMiniPreview: []bool{false},
 			expectedCreatorId:        th.BasicUser.Id,
 		},
+		// Webp image test
+		{
+			title:                    "Webp image",
+			names:                    []string{"testwebp.webp"},
+			expectImage:              true,
+			expectedImageWidths:      []int{128},
+			expectedImageHeights:     []int{256},
+			expectedImageHasPreview:  []bool{true},
+			expectedCreatorId:        th.BasicUser.Id,
+			expectedImageMiniPreview: []bool{true},
+		},
 		// Error cases
 		{
 			title:                 "Error channel_id does not exist",

app/emoji.go

@@ -21,6 +21,7 @@ import (
 	"path"
 
 	"github.com/disintegration/imaging"
+	_ "golang.org/x/image/webp"
 
 	"github.com/mattermost/mattermost-server/v6/model"
 	"github.com/mattermost/mattermost-server/v6/shared/mlog"