# -*- coding: utf-8 -*-
'''
    vdirsyncer.tests.test_sync
    ~~~~~~~~~~~~~~~~~~~~~~~~~~

    :copyright: (c) 2014 Markus Unterwaditzer
    :license: MIT, see LICENSE for more details.
'''

import pytest
from vdirsyncer.storage.base import Item
from vdirsyncer.storage.memory import MemoryStorage
from vdirsyncer.sync import sync
from . import assert_item_equals, normalize_item
import vdirsyncer.exceptions as exceptions


def empty_storage(x):
    return list(x.list()) == []


def test_irrelevant_status():
    a = MemoryStorage()
    b = MemoryStorage()
    status = {'1': ('1.txt', 1234, '1.ics', 2345)}
    sync(a, b, status)
    assert not status
    assert empty_storage(a)
    assert empty_storage(b)


def test_missing_status():
    a = MemoryStorage()
    b = MemoryStorage()
    status = {}
    item = Item(u'UID:1')
    a.upload(item)
    b.upload(item)
    sync(a, b, status)
    assert len(status) == 1
    assert a.has('1.txt')
    assert b.has('1.txt')


def test_missing_status_and_different_items():
    a = MemoryStorage()
    b = MemoryStorage()
    status = {}
    item1 = Item(u'UID:1\nhaha')
    item2 = Item(u'UID:1\nhoho')
    a.upload(item1)
    b.upload(item2)
    with pytest.raises(exceptions.SyncConflict):
        sync(a, b, status)
    assert not status
    sync(a, b, status, conflict_resolution='a wins')
    assert_item_equals(item1, b.get('1.txt')[0])
    assert_item_equals(item1, a.get('1.txt')[0])


def test_upload_and_update():
    a = MemoryStorage()
    b = MemoryStorage()
    status = {}

    item = Item(u'UID:1')  # new item 1 in a
    a.upload(item)
    sync(a, b, status)
    assert_item_equals(b.get('1.txt')[0], item)

    item = Item(u'UID:1\nASDF:YES')  # update of item 1 in b
    b.update('1.txt', item, b.get('1.txt')[1])
    sync(a, b, status)
    assert_item_equals(a.get('1.txt')[0], item)

    item2 = Item(u'UID:2')  # new item 2 in b
    b.upload(item2)
    sync(a, b, status)
    assert_item_equals(a.get('2.txt')[0], item2)

    item2 = Item(u'UID:2\nASDF:YES')  # update of item 2 in a
    a.update('2.txt', item2, a.get('2.txt')[1])
    sync(a, b, status)
    assert_item_equals(b.get('2.txt')[0], item2)


def test_deletion():
    a = MemoryStorage()
    b = MemoryStorage()
    status = {}

    item = Item(u'UID:1')
    a.upload(item)
    sync(a, b, status)
    b.delete('1.txt', b.get('1.txt')[1])
    sync(a, b, status)
    assert not a.has('1.txt') and not b.has('1.txt')

    a.upload(item)
    sync(a, b, status)
    assert a.has('1.txt') and b.has('1.txt')
    a.delete('1.txt', a.get('1.txt')[1])
    sync(a, b, status)
    assert not a.has('1.txt') and not b.has('1.txt')


def test_already_synced():
    a = MemoryStorage()
    b = MemoryStorage()
    item = Item(u'UID:1')
    a.upload(item)
    b.upload(item)
    status = {
        '1': ('1.txt', a.get('1.txt')[1], '1.txt', b.get('1.txt')[1])
    }
    old_status = dict(status)
    a.update = b.update = a.upload = b.upload = \
        lambda *a, **kw: pytest.fail('Method shouldn\'t have been called.')
    sync(a, b, status)
    assert status == old_status
    assert a.has('1.txt') and b.has('1.txt')


def test_conflict_resolution_both_etags_new():
    a = MemoryStorage()
    b = MemoryStorage()
    item = Item(u'UID:1')
    href_a, etag_a = a.upload(item)
    href_b, etag_b = b.upload(item)
    status = {}
    sync(a, b, status)
    assert status
    a.update(href_a, Item(u'UID:1\nASDASD'), etag_a)
    b.update(href_b, Item(u'UID:1\nHUEHUE'), etag_b)
    with pytest.raises(exceptions.SyncConflict):
        sync(a, b, status)
    sync(a, b, status, conflict_resolution='a wins')
    obj_a, _ = a.get(href_a)
    obj_b, _ = b.get(href_b)
    assert_item_equals(obj_a, obj_b)
    n = normalize_item(obj_a)
    assert u'UID:1' in n
    assert u'ASDASD' in n


def test_conflict_resolution_new_etags_without_changes():
    a = MemoryStorage()
    b = MemoryStorage()
    item = Item(u'UID:1')
    href_a, etag_a = a.upload(item)
    href_b, etag_b = b.upload(item)
    status = {'1': (href_a, 'BOGUS_a', href_b, 'BOGUS_b')}
    sync(a, b, status)
    assert status == {'1': (href_a, etag_a, href_b, etag_b)}