PyRIGS/RIGS/importer.py

__author__ = 'Ghost'
import os

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "PyRIGS.settings")
import django

django.setup()

from django.db import connections
from django.core.exceptions import ObjectDoesNotExist
from django.db.utils import ConnectionDoesNotExist
from django.db import transaction
from RIGS import models
import reversion
from datetime import datetime


def setup_cursor():
    try:
        cursor = connections['legacy'].cursor()
        return cursor
    except ConnectionDoesNotExist:
        print("Legacy database is not configured")
        print(connections._databases)
        return None


def import_users():
    cursor = setup_cursor()
    if cursor is None:
        return
    sql = """SELECT `id`, `login`, `password`, `email`, `first_name`, `last_name`, `verified`, `initials`, `phone_number` FROM `users`"""
    cursor.execute(sql)
    for row in cursor.fetchall():
        try:
            object = models.Profile.objects.get(pk=row[0])
            object.first_name = row[3]
            object.last_name = row[4]
            object.initials = row[6]
            object.phone_number = row[7]
            object.save()
        except ObjectDoesNotExist:
            object = models.Profile(pk=row[0], username=row[1], email=row[3], first_name=row[4], last_name=row[5],
                                    active=row[6], initials=row[7], phone_number=row[8])
            object.set_unusable_password()
            object.save()


def import_people():
    cursor = setup_cursor()
    if cursor is None:
        return
    sql = """SELECT `id`, `name`, `phone`, `email`, `address`, `status` FROM `people`"""
    cursor.execute(sql)
    resp = cursor.fetchall()
    for row in resp:
        email = row[3]
        if email is not "" and "@" not in email:
            email += "@nottingham.ac.uk"

        notes = ""
        if row[5] != "Normal":
            notes = row[5]

        person, created = models.Person.objects.get_or_create(pk=row[0], name=row[1], phone=row[2], email=email,
                                                              address=row[4], notes=notes)
        if created:
            print("Created: " + person.__str__())
            with transaction.atomic(), reversion.create_revision():
                person.save()
        else:
            print("Found: " + person.__str__())


def import_organisations():
    cursor = setup_cursor()
    if cursor is None:
        return
    sql = """SELECT `id`, `name`, `phone`, `address`, `union_account`, `status` FROM `organisations`"""
    cursor.execute(sql)
    for row in cursor.fetchall():
        notes = ""
        if row[5] != "Normal":
            notes = row[5]

        object, created = models.Organisation.objects.get_or_create(pk=row[0], name=row[1], phone=row[2],
                                                                    address=row[3],
                                                                    union_account=row[4], notes=notes)
        if created:
            print("Created: " + object.__str__())
            with transaction.atomic(), reversion.create_revision():
                object.save()
        else:
            print("Found: " + object.__str__())


def import_vat_rates():
    cursor = setup_cursor()
    if cursor is None:
        return
    sql = """SELECT `id`, `start_date`, `start_time`, `comment`, `rate` FROM `vat_rates`"""
    cursor.execute(sql)
    for row in cursor.fetchall():
        start_at = datetime.combine(row[1], row[2])
        object, created = models.VatRate.objects.get_or_create(pk=row[0], start_at=start_at,
                                                               comment=row[3], rate=row[4])
        if created:
            print("Created: " + object.__str__())
            with transaction.atomic(), reversion.create_revision():
                object.save()
        else:
            print("Found: " + object.__str__())


def import_venues(delete=False):
    if delete:
        models.Venue.objects.all().delete()
    cursor = setup_cursor()
    if cursor is None:
        return
    sql = """SELECT `venue`, `threephasepower` FROM `eventdetails` WHERE `venue` IS NOT NULL"""
    cursor.execute(sql)
    for row in cursor.fetchall():
        print(("Searching for %s", row[0]))
        try:
            object = models.Venue.objects.get(name__iexact=row[0])
            if not object.three_phase_available and row[1]:
                with transaction.atomic(), reversion.create_revision():
                    object.three_phase_available = row[1]
                    object.save()
        except ObjectDoesNotExist:
            with transaction.atomic(), reversion.create_revision():
                object = models.Venue(name=row[0], three_phase_available=row[1])
                object.save()


def import_events():
    cursor = setup_cursor()
    if cursor is None:
        return


def main():
    # import_people()
    # import_organisations()
    # import_vat_rates()
    # import_venues(True)
    import_events()


if __name__ == "__main__":
    main()