#!/usr/bin/env python

"""
Populates blank uuid fields in datasets with randomly generated values

Going forward, these ids will be generated for all new datasets. This
script fixes datasets that were generated before the change.
"""

import sys
import uuid

from galaxy.model import mapping
from galaxy.model.orm.scripts import get_config

assert sys.version_info[:2] >= ( 2, 4 )


def usage(prog) :
    print "usage: %s galaxy.ini" % prog
    print """
Populates blank uuid fields in datasets with randomly generated values.

Going forward, these ids will be generated for all new datasets. This
script fixes datasets that were generated before the change.
    """


def main():
    if len(sys.argv) != 2 or sys.argv == "-h" or sys.argv == "--help" :
        usage(sys.argv[0])
        sys.exit()
    ini_file = sys.argv.pop(1)
    config = get_config(ini_file)

    model = mapping.init( ini_file, config['db_url'], create_tables=False )

    for row in model.context.query( model.Dataset ):
        if row.uuid is None:
            row.uuid = uuid.uuid4()
            print "Setting dataset:", row.id, " UUID to ", row.uuid
    model.context.flush()

    for row in model.context.query( model.Workflow ):
        if row.uuid is None:
            row.uuid = uuid.uuid4()
            print "Setting Workflow:", row.id, " UUID to ", row.uuid
    model.context.flush()


if __name__ == "__main__":
    main()