"""meta_expense_allocation - Validate expenseAllocation 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 enum

from . import core

class ExpenseAllocations(enum.Enum):

    administration = 'administration'

    fundraising = 'fundraising'

    program = 'program'

class MetaExpenseAllocation(core.PostingChecker):

    ACCOUNTS = ('Expenses:',)

    METADATA_KEY = 'expenseAllocation'

    VALUES_ENUM = ExpenseAllocations

"""Test handling of expenseAllocation 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_expense_allocation

VALID_VALUES = {

    'program': 'program',

    'administration': 'administration',

    'fundraising': 'fundraising',

}

INVALID_VALUES = {

    'invalid',

    '',

}

@pytest.mark.parametrize('src_value,set_value', VALID_VALUES.items())

def test_valid_values_on_postings(src_value, set_value):

    txn = testutil.Transaction(postings=[

        ('Assets:Cash', -25),

        ('Expenses:General', 25, {'expenseAllocation': src_value}),

    ])

    checker = meta_expense_allocation.MetaExpenseAllocation()

    errors = checker.check(txn, txn.postings[-1])

    assert not errors

    assert txn.postings[-1].meta.get('expenseAllocation') == set_value

@pytest.mark.parametrize('src_value', INVALID_VALUES)

def test_invalid_values_on_postings(src_value):

    txn = testutil.Transaction(postings=[

        ('Assets:Cash', -25),

        ('Expenses:General', 25, {'expenseAllocation': src_value}),

    ])

    checker = meta_expense_allocation.MetaExpenseAllocation()

    errors = checker.check(txn, txn.postings[-1])

    assert errors

@pytest.mark.parametrize('src_value,set_value', VALID_VALUES.items())

def test_valid_values_on_transactions(src_value, set_value):

    txn = testutil.Transaction(expenseAllocation=src_value, postings=[

        ('Assets:Cash', -25),

        ('Expenses:General', 25),

    ])

    checker = meta_expense_allocation.MetaExpenseAllocation()

    errors = checker.check(txn, txn.postings[-1])

    assert not errors

    assert txn.postings[-1].meta.get('expenseAllocation') == set_value

@pytest.mark.parametrize('src_value', INVALID_VALUES)

def test_invalid_values_on_transactions(src_value):

    txn = testutil.Transaction(expenseAllocation=src_value, postings=[

        ('Assets:Cash', -25),

        ('Expenses:General', 25),

    ])

    checker = meta_expense_allocation.MetaExpenseAllocation()

    errors = checker.check(txn, txn.postings[-1])

    assert errors