"""allways executed before all others in server migration

it should only include low level schema changes

:organization: Logilab

:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses

"""

applcubicwebversion, cubicwebversion = versions_map['cubicweb']

if applcubicwebversion < (3, 4, 0) and cubicwebversion >= (3, 4, 0):

    session.set_shared_data('do-not-insert-cwuri', True)

    deactivate_verification_hooks()

    add_relation_type('cwuri')

    base_url = session.base_url()

    # use an internal session since some entity might forbid modifications to admin

    isession = repo.internal_session()

    for eid, in rql('Any X', ask_confirm=False):

        type, source, extid = session.describe(eid)

        if source == 'system':

            isession.execute('SET X cwuri %(u)s WHERE X eid %(x)s',

                             {'x': eid, 'u': base_url + u'eid/%s' % eid})

    isession.commit()

    reactivate_verification_hooks()

    session.set_shared_data('do-not-insert-cwuri', False)

if applcubicwebversion < (3, 5, 0) and cubicwebversion >= (3, 5, 0):

    # check that migration is not doomed

    rset = rql('Any X,Y WHERE X transition_of E, Y transition_of E, '

               'X name N, Y name N, NOT X identity Y',

               ask_confirm=False)

    if rset:

        from logilab.common.shellutils import ASK

        if not ASK.confirm('Migration will fail because of transitions with the same name. '

                           'Continue anyway ?'):

            import sys

            sys.exit(1)

    # proceed with migration

    add_entity_type('Workflow')

    add_entity_type('BaseTransition')

    add_entity_type('WorkflowTransition')

    add_entity_type('SubWorkflowExitPoint')

    # drop explicit 'State allowed_transition Transition' since it should be

    # infered due to yams inheritance.  However we've to disable the schema

    # sync hook first to avoid to destroy existing data...

    try:

        from cubicweb.hooks import syncschema

        repo.vreg.unregister(syncschema.AfterDelRelationTypeHook)

        try:

            drop_relation_definition('State', 'allowed_transition', 'Transition')

        finally:

            repo.vreg.register(syncschema.AfterDelRelationTypeHook)

    except ImportError: # syncschema is in CW >= 3.6 only

        from cubicweb.server.schemahooks import after_del_relation_type

        repo.hm.unregister_hook(after_del_relation_type,

                                'after_delete_relation', 'relation_type')

        try:

            drop_relation_definition('State', 'allowed_transition', 'Transition')

        finally:

            repo.hm.register_hook(after_del_relation_type,

                                  'after_delete_relation', 'relation_type')

    schema.rebuild_infered_relations() # need to be explicitly called once everything is in place

    for et in rql('DISTINCT Any ET,ETN WHERE S state_of ET, ET name ETN',

                  ask_confirm=False).entities():

        wf = add_workflow(u'default %s workflow' % et.name, et.name,

                          ask_confirm=False)

        rql('SET S state_of WF WHERE S state_of ET, ET eid %(et)s, WF eid %(wf)s',

            {'et': et.eid, 'wf': wf.eid}, 'et', ask_confirm=False)

        rql('SET T transition_of WF WHERE T transition_of ET, ET eid %(et)s, WF eid %(wf)s',

            {'et': et.eid, 'wf': wf.eid}, 'et', ask_confirm=False)

        rql('SET WF initial_state S WHERE ET initial_state S, ET eid %(et)s, WF eid %(wf)s',

            {'et': et.eid, 'wf': wf.eid}, 'et', ask_confirm=False)

    rql('DELETE TrInfo TI WHERE NOT TI from_state S')

    rql('SET TI by_transition T WHERE TI from_state FS, TI to_state TS, '

        'FS allowed_transition T, T destination_state TS')

    checkpoint()

    drop_relation_definition('State', 'state_of', 'CWEType')

    drop_relation_definition('Transition', 'transition_of', 'CWEType')

    drop_relation_definition('CWEType', 'initial_state', 'State')

    sync_schema_props_perms()

if applcubicwebversion < (3, 2, 2) and cubicwebversion >= (3, 2, 1):

    from base64 import b64encode

    for table in ('entities', 'deleted_entities'):

        for eid, extid in sql('SELECT eid, extid FROM %s WHERE extid is NOT NULL'

                              % table, ask_confirm=False):

            sql('UPDATE %s SET extid=%%(extid)s WHERE eid=%%(eid)s' % table,

                {'extid': b64encode(extid), 'eid': eid}, ask_confirm=False)

    checkpoint()

if applcubicwebversion < (3, 2, 0) and cubicwebversion >= (3, 2, 0):

    add_cube('card', update_database=False)