From 049eec24c9a639d4f04a28f648c288abd9462a8c Mon Sep 17 00:00:00 2001
From: Tomas Gavenciak <gavento@ucw.cz>
Date: Sun, 25 Oct 2015 12:23:38 +0100
Subject: [PATCH] Mergovadlo Resitelu

---
 seminar/tools.py | 81 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 seminar/tools.py

diff --git a/seminar/tools.py b/seminar/tools.py
new file mode 100644
index 00000000..7d7aac1d
--- /dev/null
+++ b/seminar/tools.py
@@ -0,0 +1,81 @@
+# -*- coding: utf-8 -*-
+
+import logging as log
+from .models import Resitel
+import 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()
+        
+