[chore] stub /api/v1/accounts/{id}/featured_tags endpoint (#3598)

* [chore] stub /api/v1/accounts/{id}/featured_tags endpoint

* fix swagger parsing issue

---------

Co-authored-by: tobi <31960611+tsmethurst@users.noreply.github.com>
Co-authored-by: tobi <tobi.smethurst@protonmail.com>

docs/api/swagger.yaml

@@ -3648,6 +3648,41 @@ paths:
             summary: Block account with id.
             tags:
                 - accounts
+    /api/v1/accounts/{id}/featured_tags:
+        get:
+            description: 'THIS ENDPOINT IS CURRENTLY NOT FULLY IMPLEMENTED: it will always return an empty array.'
+            operationId: accountsFeaturedTags
+            parameters:
+                - description: The id of the account.
+                  in: path
+                  name: id
+                  required: true
+                  type: string
+            produces:
+                - application/json
+            responses:
+                "200":
+                    description: ""
+                    schema:
+                        items:
+                            type: object
+                        type: array
+                "400":
+                    description: bad request
+                "401":
+                    description: unauthorized
+                "404":
+                    description: not found
+                "406":
+                    description: not acceptable
+                "500":
+                    description: internal server error
+            security:
+                - OAuth2 Bearer:
+                    - read:accounts
+            summary: Get an array of target account's featured tags.
+            tags:
+                - accounts
     /api/v1/accounts/{id}/follow:
         post:
             consumes:

internal/api/client/accounts/accounts.go

@@ -40,6 +40,7 @@ const (
 
 	BlockPath         = BasePathWithID + "/block"
 	DeletePath        = BasePath + "/delete"
+	FeaturedTagsPath  = BasePathWithID + "/featured_tags"
 	FollowersPath     = BasePathWithID + "/followers"
 	FollowingPath     = BasePathWithID + "/following"
 	FollowPath        = BasePathWithID + "/follow"
@@ -98,6 +99,9 @@ func (m *Module) Route(attachHandler func(method string, path string, f ...gin.H
 	// get account's statuses
 	attachHandler(http.MethodGet, StatusesPath, m.AccountStatusesGETHandler)
 
+	// get account's featured tags
+	attachHandler(http.MethodGet, FeaturedTagsPath, m.AccountFeaturedTagsGETHandler)
+
 	// get following or followers
 	attachHandler(http.MethodGet, FollowersPath, m.AccountFollowersGETHandler)
 	attachHandler(http.MethodGet, FollowingPath, m.AccountFollowingGETHandler)

internal/api/client/accounts/featuredtags.go

@@ -0,0 +1,83 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 accounts
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// AccountFeaturedTagsGETHandler swagger:operation GET /api/v1/accounts/{id}/featured_tags accountsFeaturedTags
+//
+// Get an array of target account's featured tags.
+//
+// THIS ENDPOINT IS CURRENTLY NOT FULLY IMPLEMENTED: it will always return an empty array.
+//
+//	---
+//	tags:
+//	- accounts
+//
+//	produces:
+//	- application/json
+//
+//	parameters:
+//	-
+//		name: id
+//		type: string
+//		description: The id of the account.
+//		in: path
+//		required: true
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- read:accounts
+//
+//	responses:
+//		'200':
+//			schema:
+//				type: array
+//				items:
+//					type: object
+//		'400':
+//			description: bad request
+//		'401':
+//			description: unauthorized
+//		'404':
+//			description: not found
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) AccountFeaturedTagsGETHandler(c *gin.Context) {
+	_, err := oauth.Authed(c, true, true, true, true)
+	if err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorUnauthorized(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	apiutil.Data(c, http.StatusOK, apiutil.AppJSON, apiutil.EmptyJSONArray)
+}