refactor: retire legacy tinode database routing

server/im_http.go

@@ -3816,7 +3816,7 @@ func serveIMFriendRequestCreate(wrt http.ResponseWriter, req *http.Request) {
 	source := strings.TrimSpace(body.Source)
 	sourceTopic := strings.TrimSpace(body.SourceTopic)
 	switch source {
-	case "search", "qr":
+	case "search", "qr", "profile_card":
 		if sourceTopic != "" {
 			writeIMError(wrt, req, http.StatusBadRequest, 30000, imReasonMalformedRequest, "source_topic is only valid for group source", nil)
 			return
@@ -6037,6 +6037,10 @@ func serveIMUserProfile(wrt http.ResponseWriter, req *http.Request, identifier s
 			writeIMSuccess(wrt, req, blockedUserProfilePayload(user, ctx))
 			return
 		}
+		if ctx.Relationship == types.RelationshipNone {
+			writeIMSuccess(wrt, req, limitedUserProfilePayload(user, ctx, privacy))
+			return
+		}
 		writeIMError(wrt, req, http.StatusForbidden, 30005, imReasonPermissionDenied, "profile is private", nil)
 		return
 	}
@@ -9030,6 +9034,39 @@ func blockedUserProfilePayload(user *types.User, ctx *types.RelationshipContext)
 	return data
 }
 
+func limitedUserProfilePayload(user *types.User, ctx *types.RelationshipContext, privacy *types.UserPrivacySettings) map[string]any {
+	data := userSummaryPayload(user, "")
+	data["username"] = user.Username
+	if original := userOriginalDisplayName(user); original != "" {
+		data["profile_display_name"] = original
+		data["original_display_name"] = original
+	}
+	data["relationship"] = ctx.Relationship
+	data["topic"] = ctx.Topic
+	data["capabilities"] = map[string]any{
+		"can_send":       false,
+		"can_call":       false,
+		"can_add_friend": ctx.Relationship == types.RelationshipNone && imPrivacyAllowsAdd(privacy, "profile_card"),
+	}
+	if ctx.RequestID != "" {
+		data["request_id"] = ctx.RequestID
+	}
+	if public, ok := user.Public.(map[string]any); ok {
+		copyLimitedProfileFields(data, public)
+	} else if public, ok := user.Public.(types.KVMap); ok {
+		copyLimitedProfileFields(data, map[string]any(public))
+	}
+	return data
+}
+
+func copyLimitedProfileFields(data map[string]any, public map[string]any) {
+	for _, key := range []string{"nickname", "public_account"} {
+		if value, ok := public[key]; ok {
+			data[key] = value
+		}
+	}
+}
+
 func copyOptionalProfileFields(data map[string]any, public map[string]any) {
 	for _, key := range []string{"nickname", "gender", "region", "public_account", "signature"} {
 		if value, ok := public[key]; ok {