Move translators db->ap to separate module

activitypub/translators/follow.go

@@ -0,0 +1,61 @@
+package translators
+
+import (
+	"context"
+	"strconv"
+
+	"git.mstar.dev/mstar/linstrom/activitypub"
+	"git.mstar.dev/mstar/linstrom/config"
+	"git.mstar.dev/mstar/linstrom/storage-new/dbgen"
+	"git.mstar.dev/mstar/linstrom/storage-new/models"
+)
+
+type ActivityFollowOut struct {
+	Context any    `json:"@context,omitempty"`
+	Id      string `json:"id"`
+	Type    string `json:"type"`
+	Actor   string `json:"actor"`
+	Object  any    `json:"object"`
+}
+
+func FollowFromStorage(ctx context.Context, id string) (*ActivityFollowOut, error) {
+	ac := dbgen.Activity
+	u2u := dbgen.UserToUserRelation
+	u := dbgen.User
+	// log := log.Ctx(ctx)
+	activity, err := ac.Where(ac.Id.Eq(id), ac.Type.Eq(string(models.ActivityFollow))).First()
+	if err != nil {
+		return nil, err
+	}
+	followId, err := strconv.ParseUint(activity.ObjectId, 10, 64)
+	if err != nil {
+		return nil, err
+	}
+	relation, err := u2u.Where(u2u.ID.Eq(followId)).First()
+	if err != nil {
+		return nil, err
+	}
+	follower, err := u.Where(u.ID.Eq(relation.UserId)).Preload(u.RemoteInfo).First()
+	if err != nil {
+		return nil, err
+	}
+	followed, err := u.Where(u.ID.Eq(relation.TargetUserId)).Preload(u.RemoteInfo).First()
+	if err != nil {
+		return nil, err
+	}
+	out := ActivityFollowOut{
+		Id:   config.GlobalConfig.General.GetFullPublicUrl() + "/api/activitypub/activity/follow/" + id,
+		Type: "Follow",
+	}
+	if follower.RemoteInfo != nil {
+		out.Actor = follower.RemoteInfo.ApLink
+	} else {
+		out.Actor = activitypub.UserIdToApUrl(follower.ID)
+	}
+	if followed.RemoteInfo != nil {
+		out.Object = followed.RemoteInfo.ApLink
+	} else {
+		out.Object = activitypub.UserIdToApUrl(followed.ID)
+	}
+	return &out, nil
+}