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"""Monasca-Statsd is a Python client for Statsd that adds dimensions.
"""
from monascastatsd import common
from monascastatsd.connection import Connection
from monascastatsd.counter import Counter
from monascastatsd.gauge import Gauge
from monascastatsd.timer import Timer


class Client(object):

    def __init__(self, name=None, host='localhost', port=8125,
                 connection=None, max_buffer_size=50, dimensions=None):
        """Initialize a Client object.

        >>> monascastatsd = MonascaStatsd()

        :name: the name for this client.  Everything sent by this client
            will be prefixed by name
        :param host: the host of the MonascaStatsd server.
        :param port: the port of the MonascaStatsd server.
        :param max_buffer_size: Maximum number of metric to buffer before
         sending to the server if sending metrics in batch
        """
        self._max_buffer_size = max_buffer_size
        self._set_connection(connection, host, port)
        self._dimensions = dimensions
        self._client_name = name

    def _set_connection(self, connection, host, port):
        if connection is None:
            self.connection = Connection(host=host,
                                         port=port,
                                         max_buffer_size=self._max_buffer_size)
        else:
            self.connection = connection

    def get_counter(self, name, connection=None, dimensions=None):
        """Gets a Counter object.

        """
        return self._get_statsd_object_by_type(Counter, name, connection,
                                               dimensions)

    def get_gauge(self, name=None, connection=None, dimensions=None):
        """Gets a Gauge object.

        """
        return self._get_statsd_object_by_type(Gauge, name, connection,
                                               dimensions)

    def get_timer(self, name=None, connection=None, dimensions=None):
        """Gets a Timer object.

        """
        return self._get_statsd_object_by_type(Timer, name, connection,
                                               dimensions)

    def _get_statsd_object_by_type(self, object_type, name, connection,
                                   dimensions):
        return object_type(name=self._update_metric_name(name),
                           connection=connection or self.connection,
                           dimensions=self._update_dimensions(dimensions))

    def _update_metric_name(self, metric_name):
        """Update the metric name with the client

        name that was passed in on instantiation.
        """
        return common.update_name(self._client_name, metric_name)

    def _update_dimensions(self, dimensions):
        """Update the dimensions list with the default

        dimensions that were passed in on instantiation.
        """
        return common.update_dimensions(self._dimensions, dimensions)