# Copyright (c) 2020-2022 by Fraunhofer Institute for Energy Economics
# and Energy System Technology (IEE), Kassel, and University of Kassel. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

import os
from pandapipes.io.file_io import from_json
from pandapipes import pp_dir, drop_junctions
from pandapipes.networks.nw_aux import log_result_upon_loading

try:
    import pandaplan.core.pplog as logging
except ImportError:
    import logging

logger = logging.getLogger(__name__)
gas_stanet_path = os.path.join(pp_dir, "networks", "network_files", "stanet_test_networks",
                               "gas_cases")


# -------------- combined networks --------------
def gas_3parallel(method="nikuradse"):
    """

    :param method: Which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_3parallel(method="n")

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "parallel_N.json" if method.lower() in ["nikuradse", "n"] else "parallel_PC.json"
    return from_json(os.path.join(gas_stanet_path, "combined_networks", net_name))


def gas_versatility():
    """

    :return: net - STANET network converted to a pandapipes network (method = "prandtl-colebrook")
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_versatility()

    """
    log_result_upon_loading(logger, method="pc", converter="stanet")
    net_name = "versatility_PC.json"
    return from_json(os.path.join(gas_stanet_path, "combined_networks", net_name))


# -------------- meshed networks --------------
def gas_meshed_delta():
    """

    :return: net - STANET network converted to a pandapipes network (method = "prandtl-colebrook")
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_meshed_delta()

    """
    log_result_upon_loading(logger, method="pc", converter="stanet")
    return from_json(os.path.join(gas_stanet_path, "meshed_networks", "delta_PC.json"))


def gas_meshed_pumps():
    """

    :return: net - STANET network converted to a pandapipes network (method = "nikuradse")
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_meshed_pumps()

    """
    log_result_upon_loading(logger, method="n", converter="stanet")
    return from_json(os.path.join(gas_stanet_path, "meshed_networks", "pumps_N.json"))


def gas_meshed_square(method="nikuradse"):
    """

    :param method: Which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_meshed_square(method="n")

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "square_N.json" if method.lower() in ["nikuradse", "n"] else "square_PC.json"
    return from_json(os.path.join(gas_stanet_path, "meshed_networks", net_name))


def gas_meshed_two_valves(method="nikuradse"):
    """

    :param method: Which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_meshed_two_valves()

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "two_valves_N.json" if method.lower() in ["nikuradse", "n"] else "two_valves_PC.json"
    return from_json(os.path.join(gas_stanet_path, "meshed_networks", net_name))


# -------------- one pipe --------------
def gas_one_pipe1(method="nikuradse"):
    """

    :param method: Which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_one_pipe1(method="pc")

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "pipe_1_N.json" if method.lower() in ["nikuradse", "n"] else "pipe_1_PC.json"
    return from_json(os.path.join(gas_stanet_path, "one_pipe", net_name))


def gas_one_pipe2(method="nikuradse"):
    """

    :param method: Which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_one_pipe2()

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "pipe_2_N.json" if method.lower() in ["nikuradse", "n"] else "pipe_2_PC.json"
    return from_json(os.path.join(gas_stanet_path, "one_pipe", net_name))


# -------------- strand net --------------
def gas_strand_2pipes(method="nikuradse"):
    """

    :param method: Which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_strand_2pipes()

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "two_pipes_N.json" if method.lower() in ["nikuradse", "n"] else "two_pipes_PC.json"
    return from_json(os.path.join(gas_stanet_path, "strand_net", net_name))


def gas_strand_pump():
    """

    :return: net - STANET network converted to a pandapipes network  (method = "nikuradse")
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_meshed_pump()

    """
    log_result_upon_loading(logger, method="n", converter="stanet")
    return from_json(os.path.join(gas_stanet_path, "strand_net", "pump_N.json"))


# -------------- t_cross --------------
def gas_tcross1(method="nikuradse"):
    """

    :param method: If results_from = "stanet", which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_tcross1(method="pc")

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "t_cross1_N.json" if method.lower() in ["nikuradse", "n"] else "t_cross1_PC.json"
    return from_json(os.path.join(gas_stanet_path, "t_cross", net_name))


def gas_tcross2(method="nikuradse"):
    """

    :param method: If results_from = "stanet", which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_tcross2(method="pc")

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "t_cross2_N.json" if method.lower() in ["nikuradse", "n"] else "t_cross2_PC.json"
    return from_json(os.path.join(gas_stanet_path, "t_cross", net_name))


# -------------- two pressure junctions --------------
def gas_2eg_hnet(method="nikuradse"):
    """

    :param method: If results_from = "stanet", which results should be loaded: nikuradse or prandtl-colebrook
    :type method: str, default "nikuradse"
    :return: net - STANET network converted to a pandapipes network
    :rtype: pandapipesNet

    :Example:
        >>> pandapipes.networks.simple_gas_networks.gas_2eg_hnet(method="n")

    """
    log_result_upon_loading(logger, method=method, converter="stanet")
    net_name = "H_net_N.json" if method.lower() in ["nikuradse", "n"] else "H_net_PC.json"
    return from_json(os.path.join(gas_stanet_path, "two_pressure_junctions", net_name))


# -------------- Schutterwald network --------------
def schutterwald(include_houses=True, max_length_house_conn_m=None):
    """
    Load natural gas distribution network for a town in the MV Oberrhein region (cf. pandapower).

    The default pressure is set to 1 bar. Geodata is provided.
    Around 1500 houses are connected with theoretical house connection pipes. It is recommended
    to set a reasonable maximum length for the house connection pipes, e.g. 50 m.

    The corresponding publication in which the net has been provided in the supplementary
    material and more information on building ages etc. can be found here:
    Kisse, J.M.; Braun, M.; Letzgus, S.; Kneiske, T.M. "A GIS-Based Planning Approach for Urban
    Power and Natural Gas Distribution Grids with Different Heat Pump Scenarios".
    Energies 2020, 13, 4052 https://doi.org/10.3390/en13164052

    :param include_houses: Include 1506 houses as sinks. If False, all sinks and respective
                           junctions and connection pipes are dropped.
    :type include_houses: bool, default 'True'
    :param max_length_house_conn_m: Limit the maximum linear distance between houses and
                                    distribution grid. All house connection pipes that are longer
                                    than the given limit are set out of service.
                                    If None, linear connections for all houses are assumed.
    :type max_length_house_conn_m: float, default 'None'
    :return: gas distribution net
    :rtype: pandapipesNet
    """
    net = from_json(os.path.join(pp_dir, 'networks', 'network_files',
                                 'gas_net_schutterwald_1bar.json'))
    if not include_houses:
        drop_junctions(net, net.sink.junction.values)

    if max_length_house_conn_m is not None:
        net.pipe.in_service.loc[(net.pipe.type=="house_connection") &
                                (net.pipe.length_km > max_length_house_conn_m / 1000)] = False
    return net
