[feature] Add emoji DELETE handler at /api/v1/admin/custom_emojis (#913)

* add emoji DELETE handler

* no need to process error (thanks kim)

* don't double check if user is admin

* add missing security annotation

internal/api/client/admin/emojidelete_test.go

@@ -0,0 +1,101 @@
+/*
+   GoToSocial
+   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package admin_test
+
+import (
+	"context"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/admin"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+)
+
+type EmojiDeleteTestSuite struct {
+	AdminStandardTestSuite
+}
+
+func (suite *EmojiDeleteTestSuite) TestEmojiDelete1() {
+	recorder := httptest.NewRecorder()
+	testEmoji := suite.testEmojis["rainbow"]
+
+	path := admin.EmojiPathWithID
+	ctx := suite.newContext(recorder, http.MethodDelete, nil, path, "application/json")
+	ctx.AddParam(admin.IDKey, testEmoji.ID)
+
+	suite.adminModule.EmojiDELETEHandler(ctx)
+	suite.Equal(http.StatusOK, recorder.Code)
+
+	b, err := io.ReadAll(recorder.Body)
+	suite.NoError(err)
+	suite.NotNil(b)
+
+	suite.Equal(`{"shortcode":"rainbow","url":"http://localhost:8080/fileserver/01F8MH17FWEB39HZJ76B6VXSKF/emoji/original/01F8MH9H8E4VG3KDYJR9EGPXCQ.png","static_url":"http://localhost:8080/fileserver/01F8MH17FWEB39HZJ76B6VXSKF/emoji/static/01F8MH9H8E4VG3KDYJR9EGPXCQ.png","visible_in_picker":true,"id":"01F8MH9H8E4VG3KDYJR9EGPXCQ","disabled":false,"updated_at":"2021-09-20T10:40:37.000Z","total_file_size":47115,"content_type":"image/png","uri":"http://localhost:8080/emoji/01F8MH9H8E4VG3KDYJR9EGPXCQ"}`, string(b))
+
+	// emoji should no longer be in the db
+	dbEmoji, err := suite.db.GetEmojiByID(context.Background(), testEmoji.ID)
+	suite.Nil(dbEmoji)
+	suite.ErrorIs(err, db.ErrNoEntries)
+}
+
+func (suite *EmojiDeleteTestSuite) TestEmojiDelete2() {
+	recorder := httptest.NewRecorder()
+	testEmoji := suite.testEmojis["yell"]
+
+	path := admin.EmojiPathWithID
+	ctx := suite.newContext(recorder, http.MethodDelete, nil, path, "application/json")
+	ctx.AddParam(admin.IDKey, testEmoji.ID)
+
+	suite.adminModule.EmojiDELETEHandler(ctx)
+	suite.Equal(http.StatusBadRequest, recorder.Code)
+
+	b, err := io.ReadAll(recorder.Body)
+	suite.NoError(err)
+	suite.NotNil(b)
+
+	suite.Equal(`{"error":"Bad Request: EmojiDelete: emoji with id 01GD5KP5CQEE1R3X43Y1EHS2CW was not a local emoji, will not delete"}`, string(b))
+
+	// emoji should still be in the db
+	dbEmoji, err := suite.db.GetEmojiByID(context.Background(), testEmoji.ID)
+	suite.NoError(err)
+	suite.NotNil(dbEmoji)
+}
+
+func (suite *EmojiDeleteTestSuite) TestEmojiDeleteNotFound() {
+	recorder := httptest.NewRecorder()
+
+	path := admin.EmojiPathWithID
+	ctx := suite.newContext(recorder, http.MethodDelete, nil, path, "application/json")
+	ctx.AddParam(admin.IDKey, "01GF8VRXX1R00X7XH8973Z29R1")
+
+	suite.adminModule.EmojiDELETEHandler(ctx)
+	suite.Equal(http.StatusNotFound, recorder.Code)
+
+	b, err := io.ReadAll(recorder.Body)
+	suite.NoError(err)
+	suite.NotNil(b)
+	suite.Equal(`{"error":"Not Found"}`, string(b))
+}
+
+func TestEmojiDeleteTestSuite(t *testing.T) {
+	suite.Run(t, &EmojiDeleteTestSuite{})
+}