import logging

from amqp.model.model import AMQRoute

RS = ":"
NULL_ROUTE = {
    "componentName": "",
    "exchange": None,
    "queue": None,
    "routingKey": "#",
    "timeout": 1,
    "validUntil": 0
}


class AMQRouteFactory:

    @staticmethod
    def from_string(data):
        try:
            keys = data.split(RS)
            if len(keys) >= 5:
                i = 0
                component_name = keys[i]
                i += 1
                exchange = keys[i]
                i += 1
                queue = keys[i] if i < len(keys) else ""
                i += 1
                routing_key = keys[i] if i < len(keys) else ""
                i += 1
                timeout = int(keys[i]) if i < len(keys) else 0
                i += 1
                valid_until = int(keys[i]) if i < len(keys) else 0
                return AMQRoute(
                    componentName=component_name,
                    exchange=exchange,
                    queue=queue,
                    key=routing_key,
                    timeout=timeout,
                    validUntil=valid_until
                )
            logging.error(
                " [E] AMQRoute incorrect format. AMQRoute expects input as: "
                "'Component-Name:AMQExchange-Name:Queue-Name:Routing-Key:Timeout:Valid-Until', "
                "got: ['%s']", data
            )
        except Exception as err:
            logging.error(
                " [E] %s: AMQRoute incorrect format. AMQRoute expects input as: "
                "'Component-Name:AMQExchange-Name:Queue-Name:Routing-Key:Timeout:Valid-Until', "
                "got: ['%s']", err, data
            )
        return NULL_ROUTE

    @staticmethod
    def validate(route_str):
        if route_str is not None:
            return route_str.count(":") > 4
        return False