#
# Copyright (c) 2019, The Board of Trustees of the Leland Stanford Junior University
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import logging
import json


logger = logging.getLogger(__name__)

def get_functions(program):
    return [x for x in program.split(' ') if x.startswith('@')]

def get_devices(program):
    return [x.rsplit('.', 1)[0] for x in program.split(' ') if x.startswith('@')]

def generate_tokens(type):

    args = type[len('Enum')+1:-1].split(',')
    result = list(map(lambda arg: f'enum:{arg}', args))
    return result

def extract_words(thingpedia):

    words_list = set()
    with open(thingpedia, 'r') as f:
        result = json.load(f)
        output = dict()

        output['devices'] = []
        output['entities'] = []

        all_devices = result['devices']
        all_entities = result['entities']

        for entity in all_entities:
            if entity['has_ner_support']:
                words_list.add('^^' + entity['type'])

        for device in all_devices:
            if device['kind_type'] in ('global', 'category', 'discovery'):
                continue

            if not device.get('kind_canonical', None):
                logger.warning('WARNING: missing canonical for device:%s' % (device['kind']))

            for function_type in ('triggers', 'queries', 'actions'):
                for function_name, function in device[function_type].items():
                    if not function['canonical']:
                        logger.warning('WARNING: missing canonical for @%s.%s' % (device['kind'], function_name))
                    else:
                        words_list.add('@' + device['kind'] + '.' + function_name)
                        for arg, type in zip(function['args'], function['types']):
                            if type.startswith('Enum'):
                                tokens = generate_tokens(type)
                                words_list.update(tokens)
                            words_list.add('param:' + arg + ':' + type)

    return words_list