import collections
from fatcat_client import ReleaseEntity, ApiClient

def entity_to_dict(entity):
    """
    Hack to take advantage of the code-generated serialization code
    """
    ac = ApiClient()
    return ac.sanitize_for_serialization(entity)

def entity_from_json(json_str, entity_type):
    """
    Hack to take advantage of the code-generated deserialization code
    """
    ac = ApiClient()
    thing = collections.namedtuple('Thing', ['data'])
    thing.data = json_str
    return ac.deserialize(thing, entity_type)

def check_kbart(year, archive):
    if not archive or not archive.get('year_spans'):
        return None
    for span in archive['year_spans']:
        if year >= span[0] and year <= span[1]:
            return True
    return False

def test_check_kbart():

    assert check_kbart(1990, dict(year_spans=[[2000, 2000]])) == False
    assert check_kbart(2000, dict(year_spans=[[2000, 2000]])) == True
    assert check_kbart(1950, dict(year_spans=[[1900, 1920], [1990, 2000]])) == False
    assert check_kbart(1950, dict(year_spans=[[1900, 1920], [1930, 2000]])) == True

def release_to_elasticsearch(entity):
    """
    Converts from an entity model/schema to elasticsearch oriented schema.

    Returns: dict
    Raises exception on error (never returns None)
    """

    if entity.state in ('redirect', 'deleted'):
        return dict(
            ident = entity.ident,
            state = entity.state,
        )
    elif entity.state != 'active':
        raise ValueError("Unhandled entity state: {}".format(entity.state))

    # First, the easy ones (direct copy)
    release = entity
    t = dict(
        ident = release.ident,
        state = release.state,
        revision = release.revision,
        title = release.title,
        original_title = release.original_title,
        release_type = release.release_type,
        release_status = release.release_status,
        language = release.language,
        license = release.license_slug,
        doi = release.doi,
        pmid = release.pmid,
        pmcid = release.pmcid,
        isbn13 = release.isbn13,
        wikidata_qid = release.wikidata_qid,
        core_id = release.core_id,
        arxiv_id = release.core_id,
        jstor_id = release.jstor_id,
    )

    is_oa = None
    is_preserved = None
    is_longtail_oa = None
    in_kbart = None
    in_jstor = False
    in_web = False
    in_dweb = False
    in_ia = False
    in_ia_sim = False
    in_shadow = False

    if release.release_date:
        # .isoformat() results in, eg, '2010-10-22' (YYYY-MM-DD)
        t['release_date'] = release.release_date.isoformat()
        if release.release_year is None:
            t['release_year'] = release.release_date.year
    if release.release_year is not None:
        t['release_year'] = release.release_year

    t['any_abstract'] = len(release.abstracts) > 0
    t['ref_count'] = len(release.refs or [])
    t['contrib_count'] = len(release.contribs or [])
    contrib_names = []
    for c in (release.contribs or []):
        if c.raw_name:
            contrib_names.append(c.raw_name)
    t['contrib_names'] = contrib_names

    container = release.container
    if container:
        t['publisher'] = container.publisher
        t['container_name'] = container.name
        t['container_issnl'] = container.issnl
        t['container_type'] = container.container_type
        if container.extra:
            c_extra = container.extra
            if c_extra.get('kbart') and release.year:
                in_jstor = check_kbart(release.year, c_extra['kbart'].get('jstor'))
                in_kbart = in_jstor
                for archive in ('portico', 'lockss', 'clockss'):
                    in_kbart = in_kbart or check_kbart(release.year, c_extra['kbart'].get(archive))

            if c_extra.get('ia'):
                if c_extra['ia'].get('sim') and release.year:
                    in_ia_sim = check_kbart(release, c_extra['ia']['sim'].get('year_spans'))
                if c_extra['ia'].get('longtail_oa'):
                    is_longtail_oa = True
            if c_extra.get('sherpa_romeo'):
                if c_extra['sherpa_romeo'].get('color') == 'white':
                    is_oa = False
            if c_extra.get('default_license') and c_extra.get('default_license').startswith('CC-'):
                is_oa = True
            if c_extra.get('doaj'):
                if c_extra['doaj'].get('as_of'):
                    is_oa = True
            if c_extra.get('road'):
                if c_extra['road'].get('as_of'):
                    is_oa = True
    else:
        t['publisher'] = release.publisher

    if release.jstor_id or (release.doi and release.doi.startswith('10.2307/')):
        in_jstor = True

    files = release.files or []
    t['file_count'] = len(files)
    t['fileset_count'] = len(release.filesets or [])
    t['webcapture_count'] = len(release.webcaptures or [])
    any_pdf_url = None
    good_pdf_url = None
    best_pdf_url = None
    ia_pdf_url = None
    for f in files:
        if f.extra and f.extra.get('shadows'):
            # TODO: shadow check goes here
            in_shadows = True
        is_pdf = 'pdf' in (f.mimetype or '')
        for url in (f.urls or []):
            if url.url.lower().startswith('http'):
                in_web = True
            if url.rel in ('dweb', 'p2p', 'ipfs', 'dat', 'torrent'):
                # not sure what rel will be for this stuff
                in_dweb = True
            if is_pdf:
                any_pdf_url = url.url
            if is_pdf and url.rel in ('webarchive', 'repository') and is_pdf:
                is_preserved = True
                good_pdf_url = url.url
            if '//www.jstor.org/' in url.url:
                in_jstor = True
            if '//web.archive.org/' in url.url or '//archive.org/' in url.url:
                in_ia = True
                if is_pdf:
                    best_pdf_url = url.url
                    ia_pdf_url = url.url
    # here is where we bake-in priority; IA-specific
    t['best_pdf_url'] = best_pdf_url or good_pdf_url or any_pdf_url
    t['ia_pdf_url'] = ia_pdf_url

    if release.license_slug:
        # TODO: more/better checks here, particularly strict *not* OA licenses
        if release.license_slug.startswith("CC-"):
            is_oa = True

    extra = release.extra or dict()
    if extra:
        if extra.get('is_oa'):
            # NOTE: not actually setting this anywhere... but could
            is_oa = True
        if extra.get('longtail_oa'):
            # sometimes set by GROBID/matcher
            is_oa = True
            is_longtail_oa = True
        if not t.get('container_name'):
            t['container_name'] = extra.get('container_name')
        if extra.get('crossref'):
            if extra['crossref'].get('archive'):
                # all crossref archives are KBART, I believe
                in_kbart = True

    if is_longtail_oa:
        is_oa = True
    t['is_oa'] = is_oa
    t['is_longtail_oa'] = is_longtail_oa
    t['in_kbart'] = in_kbart
    t['in_jstor'] = in_jstor
    t['in_web'] = in_web
    t['in_dweb'] = in_dweb
    t['in_ia'] = bool(in_ia)
    t['is_preserved'] = bool(is_preserved or in_ia or in_kbart or in_jstor)
    return t

def container_to_elasticsearch(entity):
    """
    Converts from an entity model/schema to elasticsearch oriented schema.

    Returns: dict
    Raises exception on error (never returns None)
    """

    if entity.state in ('redirect', 'deleted'):
        return dict(
            ident = entity.ident,
            state = entity.state,
        )
    elif entity.state != 'active':
        raise ValueError("Unhandled entity state: {}".format(entity.state))

    # First, the easy ones (direct copy)
    t = dict(
        ident = entity.ident,
        state = entity.state,
        revision = entity.revision,

        name = entity.name,
        publisher = entity.publisher,
        container_type = entity.container_type,
        issnl = entity.issnl,
        wikidata_qid = entity.wikidata_qid,

        entity_status = entity.entity_status,
        language = entity.language,
        license = entity.license_slug,
        doi = entity.doi,
        pmid = entity.pmid,
        isbn13 = entity.isbn13,
        core_id = entity.core_id,
        arxiv_id = entity.core_id,
        jstor_id = entity.jstor_id,
    )

    # TODO: region, discipline
    # TODO: single primary language?
    for key in ('country', 'languages', 'mimetypes', 'first_year', 'last_year'):
        if entity.extra.get(key):
            t[key] = entity.extra[key]

    in_doaj = None
    in_road = None
    # TODO: not currently implemented
    in_doi = None
    # TODO: would be nice to have 'in_doaj_works', or maybe just "any_pid"
    #in_doaj_works = None
    in_sherpa_romeo = None
    is_oa = None
    # TODO: not actually set/stored anywhere?
    is_longtail_oa = None
    any_kbart = None
    any_jstor = None
    any_ia_sim = None

    extra = entity.extra
    if extra.get('doaj'):
        if extra['doaj'].get('as_of'):
            in_doaj = True
    if extra.get('road'):
        if extra['road'].get('as_of'):
            in_road = True
    if extra.get('default_license'):
        if extra['default_license'].startswith('CC-'):
            is_oa = True
    if extra.get('sherpa_romeo'):
        in_sherpa_romeo = True
        if extra['sherpa_romeo'].get('color') == 'white':
            is_oa = False
    if extra.get('kbart'):
        any_kbart = True
        if extra['kbart'].get('jstor'):
            any_jstor = True
    if extra.get('ia'):
        if extra['ia'].get('sim'):
            any_ia_sim = True

    t['in_doaj'] = is_doaj
    t['in_road'] = is_road
    t['in_doi'] = in_doi
    t['in_sherpa_romeo'] = in_sherpa_romeo
    t['is_oa'] = in_doaj or in_road or is_longtail_oa or ia_oa
    t['is_longtail_oa'] = is_longtail_oa
    t['any_kbart'] = any_ia_sim
    t['any_jstor'] = any_ia_sim
    t['any_ia_sim'] = bool(any_ia_sim)
    return t