#!/usr/bin/env python

from invenio.search_engine import get_collection_reclist, get_record
from invenio.intbitset import intbitset
from click import progressbar

collection = sys.argv[1]

recids = list(get_collection_reclist(collection))
recids.reverse()

repeatable_tags = {}
repeatable_subfields = {}

with progressbar(recids) as recids:
    for recid in recids:
        record = get_record(recid)
        records_tags = set()
        for tag in record:
            for field in record[tag]:
                current_tag = tag + (field[1] or ' ') + (field[2] or ' ')
                if current_tag in records_tags:
                    if current_tag not in repeatable_tags:
                        repeatable_tags[current_tag] = intbitset([recid])
                    else:
                        repeatable_tags[current_tag].add(recid)
                records_tags.add(current_tag)
                current_codes = set()
                for code, value in field[0]:
                    if code in current_codes:
                        current_code = current_tag + code
                        if current_code not in repeatable_subfields:
                            repeatable_subfields[current_code] = intbitset([recid])
                        else:
                            repeatable_subfields[current_code].add(recid)
                    current_codes.add(code)

for key, value in repeatable_tags.iteritems():
    print "%s -> %s" % (key, ", ".join(value[-3:]))

for key, value in repeatable_subfields.iteritems():
    print "%s -> %s" % (key, ", ".join(value[-3:]))