#  from __future__ import absolute_import
import parsers, factories

try:
    import xml.etree.cElementTree as ET
except ImportError:
    import xml.etree.ElementTree as ET


def read_file(path, element_key):
    # get an iterable
    record_counter = 0
    context = ET.iterparse(path, events=("start", "end"))

    # turn it into an iterator
    context = iter(context)

    # get the root element
    event, root = context.__next__()

    #the factory
    inl_factory = factories.INLFactory()

    for event, element in context:
        if 'end' in event:
            if element_key in element.tag:
                #enter the processing here
                record_counter += 1

                for field in element:
                    print(field.tag, field.attrib)

                #cleaned element is a tree
                inl_parser = parsers.INLXmlParser(element)
                cleaned_element = inl_parser.clearxml()
                entity = inl_factory.get_entity(cleaned_element)

                #test print the entity
                if entity != None:
                    entity.print_entity()


                #TODO analys and upload the entity


                # import pdb; pdb.set_trace()
                print(record_counter, cleaned_element.getroot().tag, '@@@', cleaned_element.getroot().attrib, '@@@', cleaned_element.getroot().text)
            element.clear()


if __name__ == '__main__':
    read_file(r"C:/Users/Ilsar/Documents/datahack/NLI-nnl10.xml", 'record')