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"""adhoc filters

Revision ID: bddc498dd179
Revises: afb7730f6a9c
Create Date: 2018-06-13 14:54:47.086507

"""

# revision identifiers, used by Alembic.
revision = 'bddc498dd179'
down_revision = '80a67c5192fa'


from collections import defaultdict
import json
import uuid

from alembic import op
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, Text

from superset import db
from superset.utils.core import (
    convert_legacy_filters_into_adhoc, split_adhoc_filters_into_base_filters)


Base = declarative_base()


class Slice(Base):
    __tablename__ = 'slices'

    id = Column(Integer, primary_key=True)
    params = Column(Text)


def upgrade():
    bind = op.get_bind()
    session = db.Session(bind=bind)

    for slc in session.query(Slice).all():
        try:
            params = json.loads(slc.params)
            convert_legacy_filters_into_adhoc(params)
            slc.params = json.dumps(params, sort_keys=True)
        except Exception:
            pass

    session.commit()
    session.close()


def downgrade():
    bind = op.get_bind()
    session = db.Session(bind=bind)

    for slc in session.query(Slice).all():
        try:
            params = json.loads(slc.params)
            split_adhoc_filters_into_base_filters(params)

            if 'adhoc_filters' in params:
                del params['adhoc_filters']

            slc.params = json.dumps(params, sort_keys=True)
        except Exception:
            pass

    session.commit()
    session.close()
