import abstract_importer as imp
import structure as st
import trajectory as tr

import sys
sys.path.append('./classes/')


class SamplePath:
    """Aggregates all the informations about the trajectories, the real structure of the sampled net and variables
    cardinalites. Has the task of creating the objects ``Trajectory`` and ``Structure`` that will
    contain the mentioned data.

    :param importer: the Importer objects that will import ad process data
    :type importer: AbstractImporter
    :_trajectories: the ``Trajectory`` object that will contain all the concatenated trajectories
    :_structure: the ``Structure`` Object that will contain all the structurral infos about the net
    :_total_variables_count: the number of variables in the net
    """
    def __init__(self, importer: imp.AbstractImporter):
        """Constructor Method
        """
        self._importer = importer
        self._trajectories = None
        self._structure = None
        self._total_variables_count = None
        self._importer.import_data()

    def build_trajectories(self) -> None:
        """Builds the Trajectory object that will contain all the trajectories.
        Clears all the unused dataframes in ``_importer`` Object
        """
        self._trajectories = \
            tr.Trajectory(self._importer.build_list_of_samples_array(self._importer.concatenated_samples),
                          len(self._importer.sorter) + 1)
        self._importer.clear_concatenated_frame()

    def build_structure(self) -> None:
        """
        Builds the ``Structure`` object that aggregates all the infos about the net.
        """
        if self._importer.sorter != self._importer.variables.iloc[:, 0].to_list():
            raise RuntimeError("The Dataset columns order have to match the order of labels in the variables Frame!")

        self._total_variables_count = len(self._importer.sorter)
        labels = self._importer.variables.iloc[:, 0].to_list()
        indxs = self._importer.variables.index.to_numpy()
        vals = self._importer.variables.iloc[:, 1].to_numpy()
        edges = list(self._importer.structure.to_records(index=False))
        self._structure = st.Structure(labels, indxs, vals, edges,
                                       self._total_variables_count)

    @property
    def trajectories(self) -> tr.Trajectory:
        return self._trajectories

    @property
    def structure(self) -> st.Structure:
        return self._structure

    @property
    def total_variables_count(self):
        return self._total_variables_count