from datetime import datetime
from pathlib import Path
from AbstractFinalFileGenerator import AbstractFinalFileGenerator
from XMLPKLotReader import XMLPKLotReader
from os.path import join
import json


class PKLotFinalFileGenerator(AbstractFinalFileGenerator):

    def _buildOriginalFileReader(self):
        return XMLPKLotReader()

    def getDateFromFileName(self, fileName):
        fileName = fileName[:fileName.rfind('.')]
        strDate = fileName[:fileName.find('_')]
        splitDate = strDate.split('-')
        return datetime(int(splitDate[0]),int(splitDate[1]),int(splitDate[2]))

    def _loadOriginalParkingSpacesAnnotations(self, imgFileName, imgId, annotations_start_id):
        listDicts = []
        pklot_path = self.pathRootDataset.split('/')[:-1] # Always remove the dirname of current subset
        pklot_path = '/'.join(pklot_path)

        xmlPath = self.originalFileReader.getXMLPathFromJPGPKLot(join(pklot_path, imgFileName))

        try:
            parkingSpaces, statuses = self.originalFileReader.readAllParkingSpacesInfo(xmlPath)

            for i in range(len(statuses)):
                dict = self._createDefaultDictParkingSpace(imgId,annotations_start_id)
                spaces = []
                for coord in parkingSpaces[i]:
                    spaces.extend(coord)
                dict["segmentation"] = spaces
                dict["parking_status_id"] = statuses[i]

                annotations_start_id += 1
                listDicts.append(dict)
        except OSError as e:
            print('Error loading xml linked to image:', e)


        return listDicts