[bugfix] Don't nil emojis + fields on blocked accounts (#2968)

* [bugfix] Don't nil emojis + fields on blocked accounts

* comment

* swagger

docs/api/swagger.yaml

@@ -223,7 +223,9 @@ definitions:
                 type: string
                 x-go-name: DisplayName
             emojis:
-                description: Array of custom emojis used in this account's note or display name.
+                description: |-
+                    Array of custom emojis used in this account's note or display name.
+                    Empty for blocked accounts.
                 items:
                     $ref: '#/definitions/emoji'
                 type: array
@@ -235,7 +237,9 @@ definitions:
                 type: boolean
                 x-go-name: EnableRSS
             fields:
-                description: Additional metadata attached to this account's profile.
+                description: |-
+                    Additional metadata attached to this account's profile.
+                    Empty for blocked accounts.
                 items:
                     $ref: '#/definitions/field'
                 type: array

internal/api/model/account.go

@@ -79,8 +79,10 @@ type Account struct {
 	// example: 2021-07-30T09:20:25+00:00
 	LastStatusAt *string `json:"last_status_at"`
 	// Array of custom emojis used in this account's note or display name.
+	// Empty for blocked accounts.
 	Emojis []Emoji `json:"emojis"`
 	// Additional metadata attached to this account's profile.
+	// Empty for blocked accounts.
 	Fields []Field `json:"fields"`
 	// Account has been suspended by our instance.
 	Suspended bool `json:"suspended,omitempty"`

internal/typeutils/internaltofrontend.go

@@ -368,6 +368,10 @@ func (c *Converter) AccountToAPIAccountBlocked(ctx context.Context, a *gtsmodel.
 		Bot:       *a.Bot,
 		CreatedAt: util.FormatISO8601(a.CreatedAt),
 		URL:       a.URL,
+		// Empty array (not nillable).
+		Emojis: make([]apimodel.Emoji, 0),
+		// Empty array (not nillable).
+		Fields:    make([]apimodel.Field, 0),
 		Suspended: !a.SuspendedAt.IsZero(),
 		Role:      role,
 	}

internal/typeutils/internaltofrontend_test.go

@@ -420,8 +420,8 @@ func (suite *InternalToFrontendTestSuite) TestLocalInstanceAccountToFrontendBloc
   "following_count": 0,
   "statuses_count": 0,
   "last_status_at": null,
-  "emojis": null,
-  "fields": null
+  "emojis": [],
+  "fields": []
 }`, string(b))
 }