mamweb/seminar/tools.py

# -*- coding: utf-8 -*-

import logging as log
from .models import Resitel
from reversion import revisions as reversion

def merge_props(r1, r2, prop, pretend=True, smaller=False, equal=True):
    """Merge r2.`prop` into r1.`prop`.

    If r1.`prop` unset, use r1.`prop`=r2.`prop`.
    If both set and equal=True, warn if not equal.
    If both set and smaller=True, use the smaller one.
    With pretend=True does not modify r1.
    """
    a1 = r1.__getattribute__(prop)
    a2 = r2.__getattribute__(prop)
    if not a1:
        if not pretend:
            r1.__setattr__(prop, a2)
    elif a2:
        if equal and a1 != a2:
            log.warn(u"merge: Ruzna %s: %s VS %s", prop, a1, a2)
        if smaller:
            if not pretend:
                r1.__setattr__(prop, min(a1, a2))


def merge_Resitel(rbase, rmerge, pretend=True):
    """Zahrne data a vztahy Resitele rmerge do Resitele rbase, pak smaze rmerge.

    Selze pro uzivatele s user!=NULL. S pretend=True nezmeni databazi.
    """
    # Ma relace: skola
    # Je v relaci: user, reseni, soustredeni_ucastnici, vysledky_base(VIEW)

    log.info(u"merge: %s <- %s", unicode(rbase), unicode(rmerge))

    assert not rbase.user
    assert not rmerge.user
    assert rbase != rmerge

    if (rbase.jmeno != rmerge.jmeno) or (rbase.prijmeni != rmerge.prijmeni):
        log.error(u"merge: Ruzna jmena: %s VS %s", rbase, rmerge)
    if rbase.rok_maturity != rmerge.rok_maturity:
        log.error(u"merge: Ruzne roky maturity: %s VS %s", rbase.rok_maturity, rmerge.rok_maturity)

    with reversion.create_revision():
        reversion.set_comment('Merge duplicitnich Resitelu: %r <- %r' % (rbase.pk, rmerge.pk))

        merge_props(rbase, rmerge, 'skola', pretend=pretend)
        merge_props(rbase, rmerge, 'datum_narozeni', pretend=pretend)
        merge_props(rbase, rmerge, 'datum_prihlaseni', pretend=pretend)
        merge_props(rbase, rmerge, 'datum_souhlasu_zasilani', pretend=pretend, smaller=True, equal=False)
        merge_props(rbase, rmerge, 'datum_souhlasu_udaje', pretend=pretend, smaller=True, equal=False)
        merge_props(rbase, rmerge, 'email', pretend=pretend)
        if rmerge.import_mamoper_id and not pretend:
            rbase.import_mamoper_id += ' ' + rmerge.import_mamoper_id
        if rmerge.poznamka and not pretend:
            rbase.poznamka += ' ' + rmerge.poznamka
        merge_props(rbase, rmerge, 'mesto', pretend=pretend)
        merge_props(rbase, rmerge, 'pohlavi_muz', pretend=pretend)
        merge_props(rbase, rmerge, 'psc', pretend=pretend)
        merge_props(rbase, rmerge, 'stat', pretend=pretend)
        merge_props(rbase, rmerge, 'telefon', pretend=pretend)
        merge_props(rbase, rmerge, 'ulice', pretend=pretend)
        merge_props(rbase, rmerge, 'zasilat', pretend=pretend)

        for res in rmerge.reseni.all():
            if not pretend:
                res.resitel = rbase
                res.save()

        for uc in rmerge.soustredeni_ucastnici_set.all():
            if not pretend:
                uc.resitel = rbase
                uc.save()

        if not pretend:
            rmerge.delete()
            rbase.save()