Start implementing UnmarshalJSON for Star

go.mod

@@ -37,7 +37,7 @@ require (
 	github.com/felixge/fgprof v0.9.3
 	github.com/fsnotify/fsnotify v1.6.0
 	github.com/gliderlabs/ssh v0.3.6-0.20230927171611-ece6c7995e46
-	github.com/go-ap/activitypub v0.0.0-20231003111253-1fba3772399b
+	github.com/go-ap/activitypub v0.0.0-20231105151936-af32623a589b
 	github.com/go-ap/jsonld v0.0.0-20221030091449-f2a191312c73
 	github.com/go-chi/chi/v5 v5.0.10
 	github.com/go-chi/cors v1.2.1

go.sum

@@ -335,6 +335,8 @@ github.com/glycerine/go-unsnap-stream v0.0.0-20181221182339-f9677308dec2/go.mod
 github.com/glycerine/goconvey v0.0.0-20190410193231-58a59202ab31/go.mod h1:Ogl1Tioa0aV7gstGFO7KhffUsb9M4ydbEbbxpcEDc24=
 github.com/go-ap/activitypub v0.0.0-20231003111253-1fba3772399b h1:VLD6IPBDkqEsOZ+EfLO6MayuHycZ0cv4BStTlRoZduo=
 github.com/go-ap/activitypub v0.0.0-20231003111253-1fba3772399b/go.mod h1:cJ9Ye0ZNSMN7RzZDBRY3E+8M3Bpf/R1JX22Ir9yX6WI=
+github.com/go-ap/activitypub v0.0.0-20231105151936-af32623a589b h1:GfKvTbxH5+QFIwxsjQ8CwSej27eAiub6LtHbCMuBbtg=
+github.com/go-ap/activitypub v0.0.0-20231105151936-af32623a589b/go.mod h1:cJ9Ye0ZNSMN7RzZDBRY3E+8M3Bpf/R1JX22Ir9yX6WI=
 github.com/go-ap/errors v0.0.0-20231003111023-183eef4b31b7 h1:I2nuhyVI/48VXoRCCZR2hYBgnSXa+EuDJf/VyX06TC0=
 github.com/go-ap/errors v0.0.0-20231003111023-183eef4b31b7/go.mod h1:5x8a6P/dhmMGFxWLcyYlyOuJ2lRNaHGhRv+yu8BaTSI=
 github.com/go-ap/jsonld v0.0.0-20221030091449-f2a191312c73 h1:GMKIYXyXPGIp+hYiWOhfqK4A023HdgisDT4YGgf99mw=

modules/forgefed/star.go

@@ -6,6 +6,7 @@ package forgefed
 import (
 	"code.gitea.io/gitea/modules/context"
 	ap "github.com/go-ap/activitypub"
+	"github.com/valyala/fastjson"
 )
 
 type (
@@ -64,3 +65,23 @@ func (a Star) MarshalJSON() ([]byte, error) {
 	ap.JSONWrite(&b, '}')
 	return b, nil
 }
+
+func JSONLoadStar(val *fastjson.Value, s *Star) error {
+	if err := ap.OnActivity(&s.Activity, func(a *ap.Activity) error {
+		return ap.JSONLoadActivity(val, a)
+	}); err != nil {
+		return err
+	}
+
+	s.Source = SourceType(ap.JSONGetString(val, "source"))
+	return nil
+}
+
+func (s *Star) UnmarshalJSON(data []byte) error {
+	p := fastjson.Parser{}
+	val, err := p.ParseBytes(data)
+	if err != nil {
+		return err
+	}
+	return JSONLoadStar(val, s)
+}

modules/forgefed/star_test.go

@@ -48,3 +48,43 @@ func Test_StarMarshalJSON(t *testing.T) {
 		})
 	}
 }
+
+func Test_StarUnmarshalJSON(t *testing.T) {
+	type testPair struct {
+		item    []byte
+		want    Star
+		wantErr error
+	}
+
+	tests := map[string]testPair{
+		"empty": {
+			item: []byte(``),
+			want: Star{},
+		},
+		"with ID": {
+			item: []byte(`{"source":"forgejo","type":"Star","actor":"https://repo.prod.meissa.de/api/activitypub/user-id/1","object":"https://codeberg.org/api/activitypub/repository-id/1"}`),
+			want: Star{
+				Source: "forgejo",
+				Activity: ap.Activity{
+					Actor:  ap.IRI("https://repo.prod.meissa.de/api/activitypub/user-id/1"),
+					Type:   "Star",
+					Object: ap.IRI("https://codeberg.org/api/activitypub/repository-id/1"),
+				},
+			},
+		},
+	}
+
+	for name, tt := range tests {
+		t.Run(name, func(t *testing.T) {
+			got := new(Star)
+			err := got.UnmarshalJSON(tt.item)
+			if (err != nil || tt.wantErr != nil) && tt.wantErr.Error() != err.Error() {
+				t.Errorf("UnmarshalJSON() error = \"%v\", wantErr \"%v\"", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("UnmarshalJSON() got = %q, want %q", got, tt.want)
+			}
+		})
+	}
+}