"""Test validation of entity metadata"""
# Copyright © 2020  Brett Smith
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

import pytest

from . import testutil

from conservancy_beancount.plugin import meta_entity

VALID_VALUES = {
    'Smith-Alex',
    'Company19',
    'boyd-danah',
    'B-van-der-A',
}

INVALID_VALUES = {
    '-foo',
    'foo-',
    '-',
    'Überentity',
    'Alex Smith',
    ' ',
    '',
}

TEST_KEY = 'entity'

@pytest.fixture(scope='module')
def hook():
    config = testutil.TestConfig()
    return meta_entity.MetaEntity(config)

@pytest.mark.parametrize('src_value', VALID_VALUES)
def test_valid_values_on_postings(hook, src_value):
    txn = testutil.Transaction(postings=[
        ('Assets:Cash', -25),
        ('Expenses:General', 25, {TEST_KEY: src_value}),
    ])
    assert not any(hook.run(txn))

@pytest.mark.parametrize('src_value', INVALID_VALUES)
def test_invalid_values_on_postings(hook, src_value):
    txn = testutil.Transaction(postings=[
        ('Assets:Cash', -25),
        ('Expenses:General', 25, {TEST_KEY: src_value}),
    ])
    errors = list(hook.run(txn))
    assert len(errors) == 1
    assert errors[0].message == "Expenses:General has invalid entity: {}".format(src_value)

@pytest.mark.parametrize('src_value', VALID_VALUES)
def test_valid_values_on_transactions(hook, src_value):
    txn = testutil.Transaction(**{TEST_KEY: src_value}, postings=[
        ('Assets:Cash', -25),
        ('Expenses:General', 25),
    ])
    assert not any(hook.run(txn))

@pytest.mark.parametrize('src_value', INVALID_VALUES)
def test_invalid_values_on_transactions(hook, src_value):
    txn = testutil.Transaction(**{TEST_KEY: src_value}, postings=[
        ('Assets:Cash', -25),
        ('Expenses:General', 25),
    ])
    errors = list(hook.run(txn))
    assert 1 <= len(errors) <= 2
    assert all(error.message == "transaction has invalid entity: {}".format(src_value)
               for error in hook.run(txn))

@pytest.mark.parametrize('account,required', [
    ('Accrued:AccountsReceivable', True),
    ('Assets:Cash', False),
    ('Expenses:General', True),
    ('Income:Donations', True),
    ('Liabilities:CreditCard', False),
    ('UnearnedIncome:Donations', True),
])
def test_which_accounts_required_on(hook, account, required):
    txn = testutil.Transaction(postings=[
        ('Assets:Checking', 25),
        (account, 25),
    ])
    errors = list(hook.run(txn))
    if not required:
        assert not errors
    else:
        assert errors
        assert any(error.message == "{} missing entity".format(account)
                   for error in errors)