import argparse
import datetime
import itertools

import pytest

from import2ledger import hooks
from import2ledger.hooks import add_entity, default_date, filter_by_date, ledger_entry

def test_load_all():
    all_hooks = list(hooks.load_all())
    positions = {hook: index for index, hook in enumerate(all_hooks)}
    expected_order = [
        default_date.DefaultDateHook,
        add_entity.AddEntityHook,
        filter_by_date.FilterByDateHook,
        ledger_entry.LedgerEntryHook,
    ]
    actual_order = list(sorted(expected_order, key=positions.__getitem__))
    assert actual_order == expected_order

@pytest.mark.parametrize('in_key,payee,out_key,expected', [
    ('payee', 'Alex Smith', 'entity', 'Smith-Alex'),
    ('payee', 'Dakota D.  Doe', 'entity', 'Doe-Dakota-D'),
    ('payee', 'Björk', 'entity', 'Bjork'),
    ('payee', 'Fran Doe-Smith', 'entity', 'Doe-Smith-Fran'),
    ('payee', 'Alex(Nickname) Smith', 'entity', 'Smith-Alex'),
    ('payee', '稲荷', 'entity', '稲荷'),
    ('payee', '稲(Jan)荷', 'entity', '稲荷'),
    ('payee', 'Pøweł', 'entity', 'Powel'),
    ('payee', 'Elyse Jan Smith', 'entity', 'Smith-Elyse-Jan'),
    ('payee', 'Jan van Smith', 'entity', 'van-Smith-Jan'),
    ('payee', 'Francis da Silva', 'entity', 'da-Silva-Francis'),
    ('payee', 'A van der B', 'entity', 'van-der-B-A'),
    ('payee', 'A de B de la C', 'entity', 'de-la-C-A-de-B'),
    ('corporation', 'Company A', 'corp_entity', 'Company-A'),
    ('corporation', 'Company A 99', 'corp_entity', 'Company-A-99'),
    ('corporation', 'DX Co.', 'corp_entity', 'DX'),
    ('corporation', 'DX Company', 'corp_entity', 'DX'),
    ('corporation', 'DX Company Inc.', 'corp_entity', 'DX'),
    ('corporation', 'DX Corp', 'corp_entity', 'DX'),
    ('corporation', 'DX Corp LLC', 'corp_entity', 'DX'),
    ('corporation', 'DX Corporation', 'corp_entity', 'DX'),
    ('corporation', 'DX, Inc.', 'corp_entity', 'DX'),
    ('corporation', 'DX Incorporated', 'corp_entity', 'DX'),
    ('payee', 'Poe Inc', 'entity', 'Inc-Poe'),
    ('corporation', 'Silly Van', 'corp_entity', 'Silly-Van'),
])
def test_add_entity(in_key, payee, out_key, expected):
    data = {in_key: payee}
    hook = add_entity.AddEntityHook(argparse.Namespace())
    hook.run(data)
    assert data[out_key] == expected


class DateRangeConfig:
    def __init__(self, start_date=None, end_date=None):
        self.start_date = start_date
        self.end_date = end_date

    def date_in_want_range(self, date):
        return (
            ((self.start_date is None) or (date >= self.start_date))
            and ((self.end_date is None) or (date <= self.end_date))
        )


@pytest.mark.parametrize('entry_date,start_date,end_date,allowed', [
    (datetime.date(2016, 5, 10), datetime.date(2016, 1, 1), datetime.date(2016, 12, 31), True),
    (datetime.date(2016, 1, 1), datetime.date(2016, 1, 1), datetime.date(2016, 12, 31), True),
    (datetime.date(2016, 12, 31), datetime.date(2016, 1, 1), datetime.date(2016, 12, 31), True),
    (datetime.date(2016, 1, 1), datetime.date(2016, 1, 1), None, True),
    (datetime.date(2016, 12, 31), None, datetime.date(2016, 12, 31), True),
    (datetime.date(1999, 1, 2), None, None, True),
    (datetime.date(2016, 1, 25), datetime.date(2016, 2, 1), datetime.date(2016, 12, 31), False),
    (datetime.date(2016, 12, 26), datetime.date(2016, 1, 1), datetime.date(2016, 11, 30), False),
    (datetime.date(2016, 1, 31), datetime.date(2016, 2, 1), None, False),
    (datetime.date(2016, 12, 1), None, datetime.date(2016, 11, 30), False),
])
def test_filter_by_date(entry_date, start_date, end_date, allowed):
    entry_data = {'date': entry_date}
    hook = filter_by_date.FilterByDateHook(DateRangeConfig(start_date, end_date))
    assert hook.run(entry_data) is (None if allowed else False)

class DefaultDateConfig:
    ONE_DAY = datetime.timedelta(days=1)

    def __init__(self, start_date=None):
        if start_date is None:
            start_date = datetime.date(2016, 3, 5)
        self.date = start_date - self.ONE_DAY

    def get_default_date(self, section_name=None):
        self.date += self.ONE_DAY
        return self.date


class TestDefaultDate:
    def test_simple_case(self):
        expect_date = datetime.date(2016, 2, 4)
        config = DefaultDateConfig(expect_date)
        data = {}
        hook = default_date.DefaultDateHook(config)
        hook.run(data)
        assert data['date'] == expect_date

    def test_no_caching(self):
        config = DefaultDateConfig()
        hook = default_date.DefaultDateHook(config)
        d1 = {}
        d2 = {}
        hook.run(d1)
        hook.run(d2)
        assert d1['date'] != d2['date']

    def test_no_override(self):
        expect_date = datetime.date(2016, 2, 6)
        config = DefaultDateConfig(expect_date + datetime.timedelta(days=300))
        hook = default_date.DefaultDateHook(config)
        data = {'date': expect_date}
        hook.run(data)
        assert data['date'] is expect_date