ABC-90 Add POST /emoji/search and GET /emoji/autocomplete API endpoints (#8125)

* Add POST /emoji/search and GET /emoji/autocomplete API endpoints

* Add constant to be clearer

3 files changed, 179 insertions, 1 deletions

diff --git a/api4/api.go b/api4/api.go
index dd5e56d35..90c9d0df7 100644
--- a/api4/api.go
+++ b/api4/api.go
@@ -184,7 +184,7 @@ func Init(a *app.App, root *mux.Router, full bool) *API {
 	api.BaseRoutes.DataRetention = api.BaseRoutes.ApiRoot.PathPrefix("/data_retention").Subrouter()
 
 	api.BaseRoutes.Emojis = api.BaseRoutes.ApiRoot.PathPrefix("/emoji").Subrouter()
-	api.BaseRoutes.Emoji = api.BaseRoutes.Emojis.PathPrefix("/{emoji_id:[A-Za-z0-9]+}").Subrouter()
+	api.BaseRoutes.Emoji = api.BaseRoutes.ApiRoot.PathPrefix("/emoji/{emoji_id:[A-Za-z0-9]+}").Subrouter()
 
 	api.BaseRoutes.ReactionByNameForPostForUser = api.BaseRoutes.PostForUser.PathPrefix("/reactions/{emoji_name:[A-Za-z0-9\\_\\-\\+]+}").Subrouter()
 
diff --git a/api4/emoji.go b/api4/emoji.go
index 049e77d3c..30d59125b 100644
--- a/api4/emoji.go
+++ b/api4/emoji.go
@@ -11,9 +11,15 @@ import (
 	"github.com/mattermost/mattermost-server/model"
 )
 
+const (
+	EMOJI_MAX_AUTOCOMPLETE_ITEMS = 100
+)
+
 func (api *API) InitEmoji() {
 	api.BaseRoutes.Emojis.Handle("", api.ApiSessionRequired(createEmoji)).Methods("POST")
 	api.BaseRoutes.Emojis.Handle("", api.ApiSessionRequired(getEmojiList)).Methods("GET")
+	api.BaseRoutes.Emojis.Handle("/search", api.ApiSessionRequired(searchEmojis)).Methods("POST")
+	api.BaseRoutes.Emojis.Handle("/autocomplete", api.ApiSessionRequired(autocompleteEmojis)).Methods("GET")
 	api.BaseRoutes.Emoji.Handle("", api.ApiSessionRequired(deleteEmoji)).Methods("DELETE")
 	api.BaseRoutes.Emoji.Handle("", api.ApiSessionRequired(getEmoji)).Methods("GET")
 	api.BaseRoutes.Emoji.Handle("/image", api.ApiSessionRequiredTrustRequester(getEmojiImage)).Methods("GET")
@@ -162,3 +168,41 @@ func getEmojiImage(c *Context, w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Cache-Control", "max-age=2592000, public")
 	w.Write(image)
 }
+
+func searchEmojis(c *Context, w http.ResponseWriter, r *http.Request) {
+	emojiSearch := model.EmojiSearchFromJson(r.Body)
+	if emojiSearch == nil {
+		c.SetInvalidParam("term")
+		return
+	}
+
+	if emojiSearch.Term == "" {
+		c.SetInvalidParam("term")
+		return
+	}
+
+	emojis, err := c.App.SearchEmoji(emojiSearch.Term, emojiSearch.PrefixOnly, PER_PAGE_MAXIMUM)
+	if err != nil {
+		c.Err = err
+		return
+	} else {
+		w.Write([]byte(model.EmojiListToJson(emojis)))
+	}
+}
+
+func autocompleteEmojis(c *Context, w http.ResponseWriter, r *http.Request) {
+	name := r.URL.Query().Get("name")
+
+	if name == "" {
+		c.SetInvalidUrlParam("name")
+		return
+	}
+
+	emojis, err := c.App.SearchEmoji(name, true, EMOJI_MAX_AUTOCOMPLETE_ITEMS)
+	if err != nil {
+		c.Err = err
+		return
+	} else {
+		w.Write([]byte(model.EmojiListToJson(emojis)))
+	}
+}
diff --git a/api4/emoji_test.go b/api4/emoji_test.go
index 3b0fecb2b..b8b093656 100644
--- a/api4/emoji_test.go
+++ b/api4/emoji_test.go
@@ -11,6 +11,8 @@ import (
 
 	"github.com/mattermost/mattermost-server/model"
 	"github.com/mattermost/mattermost-server/utils"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestCreateEmoji(t *testing.T) {
@@ -432,3 +434,135 @@ func TestGetEmojiImage(t *testing.T) {
 	_, resp = Client.GetEmojiImage("")
 	CheckBadRequestStatus(t, resp)
 }
+
+func TestSearchEmoji(t *testing.T) {
+	th := Setup().InitBasic()
+	defer th.TearDown()
+	Client := th.Client
+
+	th.App.UpdateConfig(func(cfg *model.Config) { *cfg.ServiceSettings.EnableCustomEmoji = true })
+
+	searchTerm1 := model.NewId()
+	searchTerm2 := model.NewId()
+
+	emojis := []*model.Emoji{
+		{
+			CreatorId: th.BasicUser.Id,
+			Name:      searchTerm1,
+		},
+		{
+			CreatorId: th.BasicUser.Id,
+			Name:      "blargh_" + searchTerm2,
+		},
+	}
+
+	for idx, emoji := range emojis {
+		emoji, resp := Client.CreateEmoji(emoji, utils.CreateTestGif(t, 10, 10), "image.gif")
+		CheckNoError(t, resp)
+		emojis[idx] = emoji
+	}
+
+	search := &model.EmojiSearch{Term: searchTerm1}
+	remojis, resp := Client.SearchEmoji(search)
+	CheckNoError(t, resp)
+	CheckOKStatus(t, resp)
+
+	found := false
+	for _, e := range remojis {
+		if e.Name == emojis[0].Name {
+			found = true
+		}
+	}
+
+	assert.True(t, found)
+
+	search.Term = searchTerm2
+	search.PrefixOnly = true
+	remojis, resp = Client.SearchEmoji(search)
+	CheckNoError(t, resp)
+	CheckOKStatus(t, resp)
+
+	found = false
+	for _, e := range remojis {
+		if e.Name == emojis[1].Name {
+			found = true
+		}
+	}
+
+	assert.False(t, found)
+
+	search.PrefixOnly = false
+	remojis, resp = Client.SearchEmoji(search)
+	CheckNoError(t, resp)
+	CheckOKStatus(t, resp)
+
+	found = false
+	for _, e := range remojis {
+		if e.Name == emojis[1].Name {
+			found = true
+		}
+	}
+
+	assert.True(t, found)
+
+	search.Term = ""
+	_, resp = Client.SearchEmoji(search)
+	CheckBadRequestStatus(t, resp)
+
+	Client.Logout()
+	_, resp = Client.SearchEmoji(search)
+	CheckUnauthorizedStatus(t, resp)
+}
+
+func TestAutocompleteEmoji(t *testing.T) {
+	th := Setup().InitBasic()
+	defer th.TearDown()
+	Client := th.Client
+
+	th.App.UpdateConfig(func(cfg *model.Config) { *cfg.ServiceSettings.EnableCustomEmoji = true })
+
+	searchTerm1 := model.NewId()
+
+	emojis := []*model.Emoji{
+		{
+			CreatorId: th.BasicUser.Id,
+			Name:      searchTerm1,
+		},
+		{
+			CreatorId: th.BasicUser.Id,
+			Name:      "blargh_" + searchTerm1,
+		},
+	}
+
+	for idx, emoji := range emojis {
+		emoji, resp := Client.CreateEmoji(emoji, utils.CreateTestGif(t, 10, 10), "image.gif")
+		CheckNoError(t, resp)
+		emojis[idx] = emoji
+	}
+
+	remojis, resp := Client.AutocompleteEmoji(searchTerm1, "")
+	CheckNoError(t, resp)
+	CheckOKStatus(t, resp)
+
+	found1 := false
+	found2 := false
+	for _, e := range remojis {
+		if e.Name == emojis[0].Name {
+			found1 = true
+		}
+
+		if e.Name == emojis[1].Name {
+			found2 = true
+		}
+	}
+
+	assert.True(t, found1)
+	assert.False(t, found2)
+
+	_, resp = Client.AutocompleteEmoji("", "")
+	CheckBadRequestStatus(t, resp)
+
+	Client.Logout()
+	_, resp = Client.AutocompleteEmoji(searchTerm1, "")
+	CheckUnauthorizedStatus(t, resp)
+}