import logging
import datetime

from sqlalchemy import *
from sqlalchemy.exc import DatabaseError
from sqlalchemy.orm import relation, backref, class_mapper, joinedload
from sqlalchemy.orm.session import Session
from sqlalchemy.ext.declarative import declarative_base

from rhodecode.lib.dbmigrate.migrate import *
from rhodecode.lib.dbmigrate.migrate.changeset import *
from rhodecode.lib.utils2 import str2bool

from rhodecode.model.meta import Base
from rhodecode.model import meta
from rhodecode.lib.dbmigrate.versions import _reset_base, notify

log = logging.getLogger(__name__)


def upgrade(migrate_engine):
    """
    Upgrade operations go here.
    Don't create your own engine; bind migrate_engine to your metadata
    """
    _reset_base(migrate_engine)
    from rhodecode.lib.dbmigrate.schema import db_2_0_2

    # issue fixups
    fixups(db_2_0_2, meta.Session)


def downgrade(migrate_engine):
    meta = MetaData()
    meta.bind = migrate_engine


def fixups(models, _SESSION):
    notify("fixing new schema for landing_rev")

    for repo in models.Repository.get_all():
        print("repo %s old landing rev is: %s" % (repo, repo.landing_rev))
        _rev = repo.landing_rev[1]
        _rev_type = "rev"  # default

        if _rev in ["default", "master"]:
            _rev_type = "branch"
        elif _rev in ["tip"]:
            _rev_type = "rev"
        else:
            try:
                scm = repo.scm_instance
                if scm:
                    known_branches = scm.branches.keys()
                    known_bookmarks = scm.bookmarks.keys()
                    if _rev in known_branches:
                        _rev_type = "branch"
                    elif _rev in known_bookmarks:
                        _rev_type = "book"
            except Exception as e:
                print(e)
                print("continue...")
                # we don't want any error to break the process
                pass

        _new_landing_rev = "%s:%s" % (_rev_type, _rev)
        print("setting to %s" % _new_landing_rev)
        repo.landing_rev = _new_landing_rev
        _SESSION().add(repo)
        _SESSION().commit()
