from nose.plugins.attrib import attr
import unittest2 as unittest
from tempest import openstack
from base_compute_test import BaseComputeTest
from tempest.common.utils.data_utils import rand_name
from tempest import exceptions


class KeyPairsTest(BaseComputeTest):

    @classmethod
    def setUpClass(cls):
        cls.client = cls.keypairs_client

    @attr(type='smoke')
    def test_keypairs_create_list_delete(self):
        """Keypairs created should be available in the response list"""
        #Create 3 keypairs
        key_list = list()
        for i in range(3):
            k_name = rand_name('keypair-')
            resp, keypair = self.client.create_keypair(k_name)
            #Need to pop these keys so that our compare doesn't fail later,
            #as the keypair dicts from list API doesn't have them.
            keypair.pop('private_key')
            keypair.pop('user_id')
            self.assertEqual(200, resp.status)
            key_list.append(keypair)
        #Fetch all keypairs and verify the list
        #has all created keypairs
        resp, fetched_list = self.client.list_keypairs()
        self.assertEqual(200, resp.status)
        #We need to remove the extra 'keypair' element in the
        #returned dict. See comment in keypairs_client.list_keypairs()
        new_list = list()
        for keypair in fetched_list:
            new_list.append(keypair['keypair'])
        fetched_list = new_list
        #Now check if all the created keypairs are in the fetched list
        missing_kps = [kp for kp in key_list if kp not in fetched_list]
        self.assertFalse(missing_kps,
                         "Failed to find keypairs %s in fetched list"
                         % ', '.join(m_key['name'] for m_key in missing_kps))
        #Delete all the keypairs created
        for keypair in key_list:
            resp, _ = self.client.delete_keypair(keypair['name'])
            self.assertEqual(202, resp.status)

    @attr(type='smoke')
    def test_keypair_create_delete(self):
        """Keypair should be created, verified and deleted"""
        k_name = rand_name('keypair-')
        resp, keypair = self.client.create_keypair(k_name)
        self.assertEqual(200, resp.status)
        private_key = keypair['private_key']
        key_name = keypair['name']
        self.assertEqual(key_name, k_name,
                "The created keypair name is not equal to the requested name")
        self.assertTrue(private_key is not None,
                    "Field private_key is empty or not found.")
        resp, _ = self.client.delete_keypair(k_name)
        self.assertEqual(202, resp.status)

    @attr(type='smoke')
    def test_keypair_create_with_pub_key(self):
        """Keypair should be created with a given public key"""
        k_name = rand_name('keypair-')
        pub_key = ("ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCs"
                   "Ne3/1ILNCqFyfYWDeTKLD6jEXC2OQHLmietMWW+/vd"
                   "aZq7KZEwO0jhglaFjU1mpqq4Gz5RX156sCTNM9vRbw"
                   "KAxfsdF9laBYVsex3m3Wmui3uYrKyumsoJn2g9GNnG1P"
                   "I1mrVjZ61i0GY3khna+wzlTpCCmy5HNlrmbj3XLqBUpip"
                   "TOXmsnr4sChzC53KCd8LXuwc1i/CZPvF+3XipvAgFSE53pCt"
                   "LOeB1kYMOBaiUPLQTWXR3JpckqFIQwhIH0zoHlJvZE8hh90"
                   "XcPojYN56tI0OlrGqojbediJYD0rUsJu4weZpbn8vilb3JuDY+jws"
                   "snSA8wzBx3A/8y9Pp1B nova@ubuntu")
        resp, keypair = self.client.create_keypair(k_name, pub_key)
        self.assertEqual(200, resp.status)
        self.assertFalse('private_key' in keypair,
                    "Field private_key is not empty!")
        key_name = keypair['name']
        self.assertEqual(key_name, k_name,
                "The created keypair name is not equal to the requested name!")
        resp, _ = self.client.delete_keypair(k_name)
        self.assertEqual(202, resp.status)

    @attr(type='negative')
    def test_keypair_create_with_invalid_pub_key(self):
        """Keypair should not be created with a non RSA public key"""
        k_name = rand_name('keypair-')
        pub_key = "ssh-rsa JUNK nova@ubuntu"
        try:
            resp, _ = self.client.create_keypair(k_name, pub_key)
        except exceptions.BadRequest:
            pass
        else:
            self.fail('Expected BadRequest for invalid public key')

    @attr(type='negative')
    def test_keypair_delete_nonexistant_key(self):
        """Non-existant key deletion should throw a proper error"""
        k_name = rand_name("keypair-non-existant-")
        try:
            resp, _ = self.client.delete_keypair(k_name)
        except exceptions.NotFound:
            pass
        else:
            self.fail('nonexistent key')

    @attr(type='negative')
    def test_create_keypair_with_empty_public_key(self):
        """Keypair should not be created with an empty public key"""
        k_name = rand_name("keypair-")
        pub_key = ' '
        try:
            resp, _ = self.client.create_keypair(k_name, pub_key)
        except exceptions.BadRequest:
            pass
        else:
            self.fail('Expected BadRequest for empty public key')

    @attr(type='negative')
    def test_create_keypair_when_public_key_bits_exceeds_maximum(self):
        """Keypair should not be created when public key bits are too long"""
        k_name = rand_name("keypair-")
        pub_key = 'ssh-rsa ' + 'A' * 2048 + ' openstack@ubuntu'
        try:
            resp, _ = self.client.create_keypair(k_name, pub_key)
        except exceptions.BadRequest:
            pass
        else:
            self.fail('Expected BadRequest for too long public key')

    @attr(type='negative')
    def test_create_keypair_with_duplicate_name(self):
        """Keypairs with duplicate names should not be created"""
        k_name = rand_name('keypair-')
        resp, _ = self.client.create_keypair(k_name)
        self.assertEqual(200, resp.status)
        #Now try the same keyname to ceate another key
        try:
            resp, _ = self.client.create_keypair(k_name)
            #Expect a HTTP 409 Conflict Error
        except exceptions.Duplicate:
            pass
        else:
            self.fail('duplicate name')
        resp, _ = self.client.delete_keypair(k_name)
        self.assertEqual(202, resp.status)

    @attr(type='negative')
    def test_create_keypair_with_empty_name_string(self):
        """Keypairs with name being an empty string should not be created"""
        try:
            resp, _ = self.client.create_keypair('')
        except exceptions.BadRequest:
            pass
        else:
            self.fail('empty string')

    @attr(type='negative')
    def test_create_keypair_with_long_keynames(self):
        """Keypairs with name longer than 255 chars should not be created"""
        k_name = 'keypair-'.ljust(260, '0')
        try:
            resp, _ = self.client.create_keypair(k_name)
        except exceptions.BadRequest:
            pass
        else:
            self.fail('too long')

    @attr(type='negative')
    def test_create_keypair_invalid_name(self):
        """Keypairs with name being an invalid name should not be created"""
        k_name = 'key_/.\@:'
        try:
            resp, _ = self.client.create_keypair(k_name)
        except exceptions.BadRequest:
            pass
        else:
            self.fail('invalid name')