# coding: utf-8

import os, re
from tests.shared import assertException, getEmptyDeck, testDir

from anki import Deck

newPath = None
newMod = None

def test_create():
    global newPath, newMod
    path = "/tmp/test_attachNew.anki"
    try:
        os.unlink(path)
    except OSError:
        pass
    deck = Deck(path)
    # for open()
    newPath = deck.path
    deck.save()
    newMod = deck.mod
    deck.close()
    del deck

def test_open():
    deck = Deck(newPath)
    assert deck.mod == newMod
    deck.close()

def test_openReadOnly():
    # non-writeable dir
    assertException(Exception,
                    lambda: Deck("/attachroot"))
    # reuse tmp file from before, test non-writeable file
    os.chmod(newPath, 0)
    assertException(Exception,
                    lambda: Deck(newPath))
    os.chmod(newPath, 0666)
    os.unlink(newPath)

def test_factAddDelete():
    deck = getEmptyDeck()
    # add a fact
    f = deck.newFact()
    f['Front'] = u"one"; f['Back'] = u"two"
    n = deck.addFact(f)
    assert n == 1
    deck.rollback()
    assert deck.cardCount() == 0
    # try with two cards
    f = deck.newFact()
    f['Front'] = u"one"; f['Back'] = u"two"
    m = f.model
    m.templates[1]['actv'] = True
    m.flush()
    n = deck.addFact(f)
    assert n == 2
    # check q/a generation
    c0 = f.cards()[0]
    assert re.sub("</?.+?>", "", c0.q()) == u"one"
    # it should not be a duplicate
    for p in f.problems():
        assert not p
    # now let's make a duplicate and test uniqueness
    f2 = deck.newFact()
    f2.model.fields[1]['req'] = True
    f2['Front'] = u"one"; f2['Back'] = u""
    p = f2.problems()
    assert p[0] == "unique"
    assert p[1] == "required"
    # try delete the first card
    cards = f.cards()
    id1 = cards[0].id; id2 = cards[1].id
    assert deck.cardCount() == 2
    assert deck.factCount() == 1
    deck.deleteCard(id1)
    assert deck.cardCount() == 1
    assert deck.factCount() == 1
    # and the second should clear the fact
    deck.deleteCard(id2)
    assert deck.cardCount() == 0
    assert deck.factCount() == 0

def test_fieldChecksum():
    deck = getEmptyDeck()
    f = deck.newFact()
    f['Front'] = u"new"; f['Back'] = u"new2"
    deck.addFact(f)
    assert deck.db.scalar(
        "select csum from fsums") == int("22af645d", 16)
    # empty field should have no checksum
    f['Front'] = u""
    f.flush()
    assert deck.db.scalar(
        "select count() from fsums") == 0
    # changing the val should change the checksum
    f['Front'] = u"newx"
    f.flush()
    assert deck.db.scalar(
        "select csum from fsums") == int("4b0e5a4c", 16)
    # turning off unique and modifying the fact should delete the sum
    f.model.fields[0]['uniq'] = False
    f.model.flush()
    f.flush()
    assert deck.db.scalar(
        "select count() from fsums") == 0
    # and turning on both should ensure two checksums generated
    f.model.fields[0]['uniq'] = True
    f.model.fields[1]['uniq'] = True
    f.model.flush()
    f.flush()
    assert deck.db.scalar(
        "select count() from fsums") == 2

def test_upgrade():
    import tempfile, shutil
    src = os.path.join(testDir, "support", "anki12.anki")
    (fd, dst) = tempfile.mkstemp(suffix=".anki")
    print "upgrade to", dst
    shutil.copy(src, dst)
    deck = Deck(dst)
    # now's a good time to test the integrity check too
    deck.fixIntegrity()