def map_access_right(ar: str) -> str:
    match ar:
        case 'open':
            return 'Open Access'
        case 'closed':
            return 'Closed'
        case 'embargo':
            return 'Embargo'
        case 'restricted':
            return 'Restricted'
        case _:
            return ''


def trasform_graph_entity(p: dict) -> dict:
    p['_id'] = p['local_identifier']
    return p


def trasform_catalog_entity(p: dict) -> dict:
    p['_id'] = p['id']
    return p


def map_fos_topic_to_domain(fos: str):
    res = dict()
    if fos.startswith('01'):
        res['domain'] = 'Natural Sciences'
    if fos.startswith('02'):
        res['domain'] = 'Engineering & Technology'
    if fos.startswith('03'):
        res['domain'] = 'Medical & Health Sciences'
    if fos.startswith('04'):
        res['domain'] = 'Agricultural Sciences'
    if fos.startswith('05'):
        res['domain'] = 'Social Sciences'
    if fos.startswith('06'):
        res['domain'] = 'Humanities'
    return res

def trasform_product(p: dict) -> dict:
    p = trasform_graph_entity(p)
    p['accessRights'] = list(
        filter(lambda ar: ar != '', map(lambda m: map_access_right(m.get('access_right')), p.get('manifestations'))))
    p['keyword'] = list(
        map(lambda topic: topic.get('value'),
            filter(lambda topic: topic.get('topic').get('scheme') == 'keyword', p.get('topics'))))
    p['domain'] = list(filter(lambda fos: fos is not None,
                              map(lambda topic: map_fos_topic_to_domain(topic.get('value')),
                                  filter(lambda topic: topic.get('topic').get('scheme') == 'FOS', p.get('topics')))))

    p['firstPublishDate'] = next(
        iter(sorted(filter(lambda date: date.get('type') == 'publishing', p.get('manifestations').get('dates')))),
        None)

    return p


transform_entities = {
    # SKG-IF graph entities
    "datasource": trasform_graph_entity,
    "grants": trasform_graph_entity,
    "organizations": trasform_graph_entity,
    "persons": trasform_graph_entity,
    "products": trasform_product,
    "topics": trasform_graph_entity,
    "venues": trasform_graph_entity,
    # EOSC catalog entities
    "interoperability": trasform_catalog_entity,
    "services": trasform_catalog_entity,
    "training": trasform_catalog_entity,
}