support for GetAppliedZoneCandidates in sqlite

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>

management/internals/network_map_db/sqlite/dns.go

@@ -0,0 +1,38 @@
+package networkmap_sqlite
+
+import (
+	"context"
+
+	networkmapdb "github.com/netbirdio/netbird/management/internals/network_map_db"
+	"github.com/netbirdio/netbird/shared/management/networkmap"
+)
+
+const (
+	GetAccountZonesQuery = `
+	select zones.id as id, domain, not enable_search_domain as search_domain_disabled, distribution_groups,
+	r.name as record_name, r.type as record_type, 'IN' record_class, r.ttl as record_ttl, r.content as record_rdata
+	from zones
+	left join records as r on r.zone_id = zones.id 
+	where zones.account_id=$1
+	`
+)
+
+func (sc *SqliteStoreConn) GetAppliedZoneCandidates(ctx context.Context, accountId string) ([]networkmap.AppliedZoneCandidate, error) {
+	rows, err := sc.Conn.QueryContext(ctx, GetAccountZonesQuery, accountId)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	zones := make([]networkmapdb.Zone, 0)
+	for rows.Next() {
+		z := networkmapdb.Zone{}
+		err := rows.Scan(networkmapdb.StructFields(&z)...)
+		if err != nil {
+			return nil, err
+		}
+		zones = append(zones, z)
+	}
+
+	return networkmapdb.ZonesToAppliedZoneCandidates(zones)
+}