# -*- coding: utf-8 -*-

# Import python libs
from __future__ import absolute_import, unicode_literals, print_function

# Import Salt Testing libs
from tests.support.unit import TestCase

# Import Salt libs
import salt.utils.hashutils


class HashutilsTestCase(TestCase):

    hmac_secret = 's00p3r s3kr1t'

    # Use a non-ascii unicode type to confirm that no UnicodeEncodeError is
    # raised on Python 2.
    str = 'спам'
    str_b64encode_result = '0YHQv9Cw0Lw='
    str_encodestring_result = '0YHQv9Cw0Lw=\n'
    str_md5 = 'a035ac08ab2f03556f9b3ee640052e5c'
    str_sha256 = '095291ffa3d361436d4617879e22c1da06c6ab61a3fb081321ec854a27a091ac'
    str_sha512 = '12efd90e507289f1f21e5dcfe2e92cf0bb4904abccb55c3ce9177670c711981501054b32b807c37058675590d1c484bd2b72a4215a2fa397aa4f2b12f298b1f0'
    str_hmac_challenge = b'qz2k0t1aevKEme3JGsNQJX/xpmf+/w3q6qmWDk1ZqbY='

    # 16 bytes of random data
    bytes = b'b\x19\xf6\x86\x0e\x1a\x1cs\x0c\xda&zv\xfc\xa2\xdd'
    bytes_b64encode_result = 'Yhn2hg4aHHMM2iZ6dvyi3Q=='
    bytes_encodestring_result = 'Yhn2hg4aHHMM2iZ6dvyi3Q==\n'
    bytes_md5 = '4d064241724791641dc15930c65f75c8'
    bytes_sha256 = '25711a31c2673a48f3d1f29b25add574697872968e546d266f441de63b17954a'
    bytes_sha512 = '69f1524e602c1599fc374e1e3e2941e6f6949f4f7fe7321304e4e67bb850f3204dd5cbf9c13e231814540c2f5cd370c24ea257771d9fbf311d8f6085bad12b24'
    bytes_hmac_challenge = b'lQibiD9r1Hpo+5JYknaudIKfTx1L5J3U58M9yQOd04c='

    def test_base64_b64encode(self):
        '''
        Ensure that this function converts the value passed to bytes before
        attempting to encode, avoiding a UnicodeEncodeError on Python 2 and a
        TypeError on Python 3.
        '''
        self.assertEqual(
            salt.utils.hashutils.base64_b64encode(self.str),
            self.str_b64encode_result
        )
        self.assertEqual(
            salt.utils.hashutils.base64_b64encode(self.bytes),
            self.bytes_b64encode_result
        )

    def test_base64_b64decode(self):
        '''
        Ensure that this function converts the value passed to a unicode type
        (if possible) on Python 2, and a str type (if possible) on Python 3.
        '''
        self.assertEqual(
            salt.utils.hashutils.base64_b64decode(self.str_b64encode_result),
            self.str
        )
        self.assertEqual(
            salt.utils.hashutils.base64_b64decode(self.bytes_b64encode_result),
            self.bytes
        )

    def test_base64_encodestring(self):
        '''
        Ensure that this function converts the value passed to bytes before
        attempting to encode, avoiding a UnicodeEncodeError on Python 2 and a
        TypeError on Python 3.
        '''
        self.assertEqual(
            salt.utils.hashutils.base64_encodestring(self.str),
            self.str_encodestring_result
        )
        self.assertEqual(
            salt.utils.hashutils.base64_encodestring(self.bytes),
            self.bytes_encodestring_result
        )

    def test_base64_decodestring(self):
        '''
        Ensure that this function converts the value passed to a unicode type
        (if possible) on Python 2, and a str type (if possible) on Python 3.
        '''
        self.assertEqual(
            salt.utils.hashutils.base64_decodestring(self.str_encodestring_result),
            self.str
        )
        self.assertEqual(
            salt.utils.hashutils.base64_decodestring(self.bytes_encodestring_result),
            self.bytes
        )

    def test_md5_digest(self):
        '''
        Ensure that this function converts the value passed to bytes before
        attempting to encode, avoiding a UnicodeEncodeError on Python 2 and a
        TypeError on Python 3.
        '''
        self.assertEqual(
            salt.utils.hashutils.md5_digest(self.str),
            self.str_md5
        )
        self.assertEqual(
            salt.utils.hashutils.md5_digest(self.bytes),
            self.bytes_md5
        )

    def test_sha256_digest(self):
        '''
        Ensure that this function converts the value passed to bytes before
        attempting to encode, avoiding a UnicodeEncodeError on Python 2 and a
        TypeError on Python 3.
        '''
        self.assertEqual(
            salt.utils.hashutils.sha256_digest(self.str),
            self.str_sha256
        )
        self.assertEqual(
            salt.utils.hashutils.sha256_digest(self.bytes),
            self.bytes_sha256
        )

    def test_sha512_digest(self):
        '''
        Ensure that this function converts the value passed to bytes before
        attempting to encode, avoiding a UnicodeEncodeError on Python 2 and a
        TypeError on Python 3.
        '''
        self.assertEqual(
            salt.utils.hashutils.sha512_digest(self.str),
            self.str_sha512
        )
        self.assertEqual(
            salt.utils.hashutils.sha512_digest(self.bytes),
            self.bytes_sha512
        )

    def test_hmac_signature(self):
        '''
        Ensure that this function converts the value passed to bytes before
        attempting to validate the hmac challenge, avoiding a
        UnicodeEncodeError on Python 2 and a TypeError on Python 3.
        '''
        self.assertTrue(
            salt.utils.hashutils.hmac_signature(
                self.str,
                self.hmac_secret,
                self.str_hmac_challenge
            )
        )
        self.assertTrue(
            salt.utils.hashutils.hmac_signature(
                self.bytes,
                self.hmac_secret,
                self.bytes_hmac_challenge
            )
        )

    def test_get_hash_exception(self):
        self.assertRaises(
            ValueError,
            salt.utils.hashutils.get_hash,
            '/tmp/foo/',
            form='INVALID')