import json
from view_common import get_system_interfaces, iface_info


def collect_tokens(cfg):
    net = cfg.get('network_interfaces', {})
    wan = net.get('wan_interface', '')
    lan = net.get('lan_interface', '')
    sys_ifaces = get_system_interfaces()
    for configured in [wan, lan]:
        if configured and configured not in sys_ifaces:
            sys_ifaces.append(configured)
    sys_ifaces.sort()
    iface_data = [iface_info(i) for i in sys_ifaces]
    return {
        'GENERAL_WAN_INTERFACE':       str(wan or '-'),
        'GENERAL_LAN_INTERFACE':       str(lan or '-'),
        'NETWORK_INTERFACE_DATA_JSON': json.dumps(iface_data),
    }