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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import, print_function, unicode_literals

import unittest
from mozunit import main
from taskgraph.util.schema import (
    validate_schema,
    resolve_keyed_by,
    Schema,
)

schema = Schema({
    'x': int,
    'y': basestring,
})


class TestValidateSchema(unittest.TestCase):

    def test_valid(self):
        validate_schema(schema, {'x': 10, 'y': 'foo'}, "pfx")

    def test_invalid(self):
        try:
            validate_schema(schema, {'x': 'not-int'}, "pfx")
            self.fail("no exception raised")
        except Exception as e:
            self.assertTrue(str(e).startswith("pfx\n"))


class TestCheckSchema(unittest.TestCase):

    def test_schema(self):
        "Creating a schema applies taskgraph checks."
        with self.assertRaises(Exception):
            Schema({"camelCase": int})

    def test_extend_schema(self):
        "Extending a schema applies taskgraph checks."
        with self.assertRaises(Exception):
            Schema({"kebab-case": int}).extend({"camelCase": int})

    def test_extend_schema_twice(self):
        "Extending a schema twice applies taskgraph checks."
        with self.assertRaises(Exception):
            Schema({"kebab-case": int}).extend({'more-kebab': int}).extend({"camelCase": int})


class TestResolveKeyedBy(unittest.TestCase):

    def test_no_by(self):
        self.assertEqual(
            resolve_keyed_by({'x': 10}, 'z', 'n'),
            {'x': 10})

    def test_no_by_dotted(self):
        self.assertEqual(
            resolve_keyed_by({'x': {'y': 10}}, 'x.z', 'n'),
            {'x': {'y': 10}})

    def test_no_by_not_dict(self):
        self.assertEqual(
            resolve_keyed_by({'x': 10}, 'x.y', 'n'),
            {'x': 10})

    def test_no_by_not_by(self):
        self.assertEqual(
            resolve_keyed_by({'x': {'a': 10}}, 'x', 'n'),
            {'x': {'a': 10}})

    def test_nested(self):
        x = {
            'by-foo': {
                'F1': {
                    'by-bar': {
                        'B1': 11,
                        'B2': 12,
                    },
                },
                'F2': 20,
                'default': 0,
            },
        }
        self.assertEqual(
            resolve_keyed_by({'x': x}, 'x', 'x', foo='F1', bar='B1'),
            {'x': 11})
        self.assertEqual(
            resolve_keyed_by({'x': x}, 'x', 'x', foo='F1', bar='B2'),
            {'x': 12})
        self.assertEqual(
            resolve_keyed_by({'x': x}, 'x', 'x', foo='F2'),
            {'x': 20})
        self.assertEqual(
            resolve_keyed_by({'x': x}, 'x', 'x', foo='F99', bar='B1'),
            {'x': 0})

    def test_no_by_empty_dict(self):
        self.assertEqual(
            resolve_keyed_by({'x': {}}, 'x', 'n'),
            {'x': {}})

    def test_no_by_not_only_by(self):
        self.assertEqual(
            resolve_keyed_by({'x': {'by-y': True, 'a': 10}}, 'x', 'n'),
            {'x': {'by-y': True, 'a': 10}})

    def test_match_nested_exact(self):
        self.assertEqual(
            resolve_keyed_by(
                {'f': 'shoes', 'x': {'y': {'by-f': {'shoes': 'feet', 'gloves': 'hands'}}}},
                'x.y', 'n'),
            {'f': 'shoes', 'x': {'y': 'feet'}})

    def test_match_regexp(self):
        self.assertEqual(
            resolve_keyed_by(
                {'f': 'shoes', 'x': {'by-f': {'s?[hH]oes?': 'feet', 'gloves': 'hands'}}},
                'x', 'n'),
            {'f': 'shoes', 'x': 'feet'})

    def test_match_partial_regexp(self):
        self.assertEqual(
            resolve_keyed_by(
                {'f': 'shoes', 'x': {'by-f': {'sh': 'feet', 'default': 'hands'}}},
                'x', 'n'),
            {'f': 'shoes', 'x': 'hands'})

    def test_match_default(self):
        self.assertEqual(
            resolve_keyed_by(
                {'f': 'shoes', 'x': {'by-f': {'hat': 'head', 'default': 'anywhere'}}},
                'x', 'n'),
            {'f': 'shoes', 'x': 'anywhere'})

    def test_match_extra_value(self):
        self.assertEqual(
            resolve_keyed_by(
                {'f': {'by-foo': {'x': 10, 'y': 20}}},
                'f', 'n',
                foo='y'),
            {'f': 20})

    def test_no_match(self):
        self.assertRaises(
            Exception, resolve_keyed_by,
            {'f': 'shoes', 'x': {'by-f': {'hat': 'head'}}}, 'x', 'n')

    def test_multiple_matches(self):
        self.assertRaises(
            Exception, resolve_keyed_by,
            {'f': 'hats', 'x': {'by-f': {'hat.*': 'head', 'ha.*': 'hair'}}}, 'x', 'n')

    def test_no_key_no_default(self):
        """
        When the key referenced in `by-*` doesn't exist, and there is not default value,
        an exception is raised.
        """
        self.assertRaises(
            Exception, resolve_keyed_by,
            {'x': {'by-f': {'hat.*': 'head', 'ha.*': 'hair'}}}, 'x', 'n')

    def test_no_key(self):
        """
        When the key referenced in `by-*` doesn't exist, and there is a default value,
        that value is used as the result.
        """
        self.assertEqual(
            resolve_keyed_by(
                {'x': {'by-f': {'hat': 'head', 'default': 'anywhere'}}},
                'x', 'n'),
            {'x': 'anywhere'})


if __name__ == '__main__':
    main()