# -*- coding: utf-8 -*-

# Copyright (c) 2016-2022 by University of Kassel and Fraunhofer Institute for Energy Economics
# and Energy System Technology (IEE), Kassel. All rights reserved.
import logging
from typing import Dict, List
import numpy as np
from pandapower.auxiliary import pandapowerNet
import pandas as pd
from . import cim_classes

logger = logging.getLogger(__name__)


def get_pp_net_special_columns_dict() -> Dict[str, str]:
    """
    Get a dictionary with the special CIM fields, used as columns in a pandapower network.
    :return Dict[str, str]: The dictionary with the special CIM fields.
    """
    return dict({'o_id': 'origin_id', 'sub': 'substation', 't': 'terminal', 't_from': 'terminal_from',
                 'from_bus': 'terminal_from', 't_to': 'terminal_to', 'to_bus': 'terminal_to', 't_bus': 'terminal_bus',
                 't_ele': 'terminal_element', 't_hv': 'terminal_hv', 'hv_bus': 'terminal_hv', 't_mv': 'terminal_mv',
                 'mv_bus': 'terminal_mv', 't_lv': 'terminal_lv', 'lv_bus': 'terminal_lv', 'o_cl': 'origin_class',
                 'o_prf': 'origin_profile', 'ct': 'cim_topnode', 'tc': 'tapchanger_class', 'tc_id': 'tapchanger_id',
                 'pte_id': 'PowerTransformerEnd_id', 'pte_id_hv': 'PowerTransformerEnd_id_hv',
                 'pte_id_mv': 'PowerTransformerEnd_id_mv', 'pte_id_lv': 'PowerTransformerEnd_id_lv',
                 'cnc_id': 'ConnectivityNodeContainer_id', 'sub_id': 'substation_id'})


def extend_pp_net_cim(net: pandapowerNet, override: bool = True) -> pandapowerNet:
    """
    Extend pandapower element DataFrames with special columns for the CIM converter, e.g. a column for the RDF ID.
    :param net: The pandapower net to extend.
    :param override: If True, all existing special CIM columns will be overwritten (content will be erased). If False,
    only missing columns will be created. Optional, default: True
    :return: The extended pandapower network.
    """
    np_str_type = np.typeDict.get('str')
    np_float_type = np.typeDict.get('float')
    np_bool_type = np.typeDict.get('bool')

    sc = get_pp_net_special_columns_dict()

    # all pandapower element types like bus, line, trafo will get the following special columns
    fill_dict_all: Dict[type, List[str]] = dict({})
    fill_dict_all[np_str_type] = [sc['o_id'], sc['o_cl']]

    # special elements
    fill_dict: Dict[str, Dict[type, List[str]]] = dict()

    fill_dict['bus'] = dict()
    fill_dict['bus'][np_str_type] = [sc['o_prf'], sc['ct'], sc['cnc_id'], sc['sub_id'], 'description']

    fill_dict['ext_grid'] = dict()
    fill_dict['ext_grid'][np_str_type] = [sc['t'], sc['sub']]
    fill_dict['ext_grid'][np_float_type] = ['min_p_mw', 'max_p_mw', 'min_q_mvar', 'max_q_mvar', 'p_mw', 'q_mvar',
                                            's_sc_max_mva', 's_sc_min_mva', 'rx_max', 'rx_min', 'r0x0_max', 'x0x_max']

    fill_dict['load'] = dict()
    fill_dict['load'][np_str_type] = [sc['t']]
    fill_dict['gen'] = dict()
    fill_dict['gen'][np_str_type] = [sc['t']]
    fill_dict['gen'][np_float_type] = \
        ['min_p_mw', 'max_p_mw', 'min_q_mvar', 'max_q_mvar', 'vn_kv', 'rdss_ohm', 'xdss_pu', 'cos_phi', 'pg_percent']
    fill_dict['sgen'] = dict()
    fill_dict['sgen'][np_str_type] = [sc['t']]
    fill_dict['sgen'][np_float_type] = ['k', 'rx', 'vn_kv', 'rdss_ohm', 'xdss_pu', 'lrc_pu', 'generator_type']
    fill_dict['motor'] = dict()
    fill_dict['motor'][np_str_type] = [sc['t']]
    fill_dict['storage'] = dict()
    fill_dict['storage'][np_str_type] = [sc['t']]
    fill_dict['shunt'] = dict()
    fill_dict['shunt'][np_str_type] = [sc['t']]
    fill_dict['ward'] = dict()
    fill_dict['ward'][np_str_type] = [sc['t']]
    fill_dict['xward'] = dict()
    fill_dict['xward'][np_str_type] = [sc['t']]

    fill_dict['line'] = dict()
    fill_dict['line'][np_str_type] = [sc['t_from'], sc['t_to']]
    fill_dict['line'][np_float_type] = ['r0_ohm_per_km', 'x0_ohm_per_km', 'c0_nf_per_km', 'g0_us_per_km',
                                        'endtemp_degree']

    fill_dict['dcline'] = dict()
    fill_dict['dcline'][np_str_type] = [sc['t_from'], sc['t_to']]

    fill_dict['switch'] = dict()
    fill_dict['switch'][np_str_type] = [sc['t_bus'], sc['t_ele']]

    fill_dict['impedance'] = dict()
    fill_dict['impedance'][np_str_type] = [sc['t_from'], sc['t_to']]
    fill_dict['impedance'][np_float_type] = ['rft0_pu', 'xft0_pu', 'rtf0_pu', 'xtf0_pu']

    fill_dict['trafo'] = dict()
    fill_dict['trafo'][np_str_type] = [sc['t_hv'], sc['t_lv'], sc['pte_id_hv'], sc['pte_id_lv'], sc['tc'], sc['tc_id'],
                                       'vector_group', 'id_characteristic']
    fill_dict['trafo'][np_float_type] = ['vk0_percent', 'vkr0_percent', 'xn_ohm']
    fill_dict['trafo'][np_bool_type] = ['power_station_unit', 'oltc']

    fill_dict['trafo3w'] = dict()
    fill_dict['trafo3w'][np_str_type] = [sc['t_hv'], sc['t_mv'], sc['t_lv'], sc['pte_id_hv'], sc['pte_id_mv'],
                                         sc['pte_id_lv'], sc['tc'], sc['tc_id'], 'vector_group', 'id_characteristic']
    fill_dict['trafo3w'][np_float_type] = ['vk0_hv_percent', 'vk0_mv_percent', 'vk0_lv_percent', 'vkr0_hv_percent',
                                           'vkr0_mv_percent', 'vkr0_lv_percent']
    fill_dict['trafo3w'][np_bool_type] = ['power_station_unit']

    for pp_type, one_fd in fill_dict.items():
        for np_type, fields in fill_dict_all.items():
            for field in fields:
                if override or field not in net[pp_type].columns:
                    net[pp_type][field] = pd.Series([], dtype=np_type)
        for np_type, fields in one_fd.items():
            for field in fields:
                if override or field not in net[pp_type].columns:
                    net[pp_type][field] = pd.Series([], dtype=np_type)

    # some special items
    if override:
        net['CGMES'] = dict()
        net['CGMES']['BaseVoltage'] = pd.DataFrame(None, columns=['rdfId', 'nominalVoltage'])
    else:
        if 'CGMES' not in net.keys():
            net['CGMES'] = dict()
        if 'BaseVoltage' not in net['CGMES'].keys():
            net['CGMES']['BaseVoltage'] = pd.DataFrame(None, columns=['rdfId', 'nominalVoltage'])

    return net


def get_cim_data_structure() -> Dict[str, Dict[str, pd.DataFrame]]:
    return cim_classes.CimParser().get_cim_data_structure()
