# Copyright IBM Corp. 2015, 2015 All Rights Reserved
# Copyright (c) 2010-2016 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import json
import os
import random
import string
from swiftclient import client as c
from nose.plugins.attrib import attr
from tests.functional.java import StorletJavaFunctionalTest
import unittest


def create_local_chunks():
    for i in range(1, 10):
        oname = '/tmp/slo_chunk_%d' % i
        f = open(oname, 'w')
        f.write(''.join(random.choice(string.ascii_uppercase + string.digits)
                for _ in range(1048576)))
        f.close()


def delete_local_chunks():
    for i in range(1, 10):
        oname = '/tmp/slo_chunk_%d' % i
        os.remove(oname)


class TestSLO(StorletJavaFunctionalTest):
    def setUp(self):
        self.storlet_log = 'identitystorlet-1.0.log'
        self.additional_headers = {}
        main_class = 'org.openstack.storlet.identity.IdentityStorlet'
        super(TestSLO, self).setUp('IdentityStorlet',
                                   'identitystorlet-1.0.jar',
                                   main_class,
                                   '')

        for cont in ('container1', 'container2', 'container3'):
            self.create_container(cont)
        create_local_chunks()
        self.put_SLO()
        self.get_SLO()

    def tearDown(self):
        delete_local_chunks()
        super(TestSLO, self).tearDown()

    def get_SLO(self):
        response = dict()
        headers, body = c.get_object(self.url, self.token,
                                     self.container, 'assembly',
                                     http_conn=None, resp_chunk_size=1048576,
                                     query_string=None, response_dict=response,
                                     headers=None)

        i = 1
        for chunk in body:
            oname = '/tmp/slo_chunk_%d' % i
            f = open(oname, 'r')
            file_content = f.read()
            # print '%s    %s' % (chunk[:10], file_content[:10])
            # print '%d    %d' % (len(chunk), len(file_content))
            self.assertEqual(chunk, file_content)
            f.close()
            i = i + 1

    def put_SLO(self):
        # Create temp files
        assembly = []
        for i in range(1, 10):
            oname = '/tmp/slo_chunk_%d' % i
            f = open(oname, 'r')
            content_length = None
            response = dict()
            c.put_object(self.url, self.token,
                         self.container, oname, f,
                         content_length, None, None,
                         "application/octet-stream",
                         None, None, None, None, response)
            f.close()
            status = response.get('status')
            self.assertGreaterEqual(status, 200)
            self.assertLess(status, 300)

            headers = response.get('headers')
            segment = dict()
            segment['path'] = '%s/%s' % (self.container, oname)
            segment['size_bytes'] = 1048576
            segment['etag'] = headers['etag']
            assembly.append(segment)

        content_length = None
        response = dict()
        headers = {'x-object-meta-prop1': 'val1'}
        c.put_object(self.url, self.token, self.container,
                     'assembly', json.dumps(assembly),
                     content_length=None, etag=None, chunk_size=None,
                     headers=headers, query_string='multipart-manifest=put',
                     response_dict=response)
        status = response.get('status')
        self.assertGreaterEqual(status, 200)
        self.assertLess(status, 300)

    def compare_slo_to_chunks(self, body):
        i = 1
        for chunk in body:
            if chunk:
                if i < 10:
                    oname = '/tmp/slo_chunk_%d' % i
                    f = open(oname, 'r')
                    file_content = f.read()
                    # print '%s    %s' % (chunk[:10], file_content[:10])
                    # print '%d    %d' % (len(chunk), len(file_content))
                    self.assertEqual(chunk, file_content)
                    f.close()
                    i = i + 1
                else:
                    aux_content = ''
                    for j in range(1, 4):
                        oname = '/tmp/aux_file%d' % j
                        f = open(oname, 'r')
                        aux_content += f.read()
                        f.close()
                    self.ssertEqual(chunk, aux_content)

    @attr('slow')
    def test_get_SLO(self):
        headers = {'X-Run-Storlet': self.storlet_name}
        headers.update(self.additional_headers)
        response = dict()
        headers, body = c.get_object(self.url, self.token,
                                     self.container, 'assembly',
                                     query_string=None,
                                     response_dict=response,
                                     resp_chunk_size=1048576,
                                     headers=headers)
        self.compare_slo_to_chunks(body)


class TestSloOnProxy(TestSLO):
    def setUp(self):
        super(TestSloOnProxy, self).setUp()
        self.additional_headers = {'X-Storlet-Run-On-Proxy': ''}


if __name__ == '__main__':
    unittest.main()