# Copyright 2014 Microsoft Corporation
#
# 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.
#
# Requires Python 2.4+ and Openssl 1.0+
#
# Implements parts of RFC 2131, 1541, 1497 and
# http://msdn.microsoft.com/en-us/library/cc227282%28PROT.10%29.aspx
# http://msdn.microsoft.com/en-us/library/cc227259%28PROT.13%29.aspx

from tests.tools import AgentTestCase, patch, Mock, MagicMock
import uuid
import unittest
import os
import azurelinuxagent.utils.restutil as restutil
from azurelinuxagent.future import ustr, httpclient
import azurelinuxagent.logger as logger

class TestHttpOperations(AgentTestCase):

    def test_parse_url(self):
        test_uri = "http://abc.def/ghi#hash?jkl=mn"
        host, port, secure, rel_uri = restutil._parse_url(test_uri)
        self.assertEquals("abc.def", host)
        self.assertEquals("/ghi#hash?jkl=mn", rel_uri)

        test_uri = "http://abc.def/"
        host, port, secure, rel_uri = restutil._parse_url(test_uri)
        self.assertEquals("abc.def", host)
        self.assertEquals("/", rel_uri)
        self.assertEquals(False, secure)
        
        test_uri = "https://abc.def/ghi?jkl=mn"
        host, port, secure, rel_uri = restutil._parse_url(test_uri)
        self.assertEquals(True, secure)
    
        test_uri = "http://abc.def:80/"
        host, port, secure, rel_uri = restutil._parse_url(test_uri)
        self.assertEquals("abc.def", host)

        host, port, secure, rel_uri = restutil._parse_url("")
        self.assertEquals(None, host)
        self.assertEquals(rel_uri, "")

        host, port, secure, rel_uri = restutil._parse_url("None")
        self.assertEquals(None, host)
        self.assertEquals(rel_uri, "None")


    @patch("azurelinuxagent.future.httpclient.HTTPSConnection")
    @patch("azurelinuxagent.future.httpclient.HTTPConnection")
    def test_http_request(self, HTTPConnection, HTTPSConnection):
        mock_httpconn = MagicMock()
        mock_httpresp = MagicMock()
        mock_httpconn.getresponse = Mock(return_value=mock_httpresp)
        HTTPConnection.return_value = mock_httpconn
        HTTPSConnection.return_value = mock_httpconn
       
        mock_httpresp.read = Mock(return_value="_(:3| <)_")

        #Test http get
        resp = restutil._http_request("GET", "foo", "bar")
        self.assertNotEquals(None, resp)
        self.assertEquals("_(:3| <)_", resp.read())
    
        #Test https get
        resp = restutil._http_request("GET", "foo", "bar", secure=True)
        self.assertNotEquals(None, resp)
        self.assertEquals("_(:3| <)_", resp.read())
        
        #Test http get with proxy
        mock_httpresp.read = Mock(return_value="_(:3| <)_")
        resp = restutil._http_request("GET", "foo", "bar", proxy_host="foo.bar",
                                      proxy_port=23333)
        self.assertNotEquals(None, resp)
        self.assertEquals("_(:3| <)_", resp.read())
    
        #Test https get
        resp = restutil._http_request("GET", "foo", "bar", secure=True)
        self.assertNotEquals(None, resp)
        self.assertEquals("_(:3| <)_", resp.read())
        
        #Test https get with proxy
        mock_httpresp.read = Mock(return_value="_(:3| <)_")
        resp = restutil._http_request("GET", "foo", "bar", proxy_host="foo.bar",
                                      proxy_port=23333, secure=True)
        self.assertNotEquals(None, resp)
        self.assertEquals("_(:3| <)_", resp.read())
    
    @patch("time.sleep")
    @patch("azurelinuxagent.utils.restutil._http_request")
    def test_http_request_with_retry(self, _http_request, sleep):
        mock_httpresp = MagicMock()
        mock_httpresp.read = Mock(return_value="hehe")
        _http_request.return_value = mock_httpresp

        #Test http get
        resp = restutil.http_get("http://foo.bar") 
        self.assertEquals("hehe", resp.read())

        #Test https get
        resp = restutil.http_get("https://foo.bar") 
        self.assertEquals("hehe", resp.read())
        
        #Test http failure
        _http_request.side_effect = httpclient.HTTPException("Http failure")
        self.assertRaises(restutil.HttpError, restutil.http_get, "http://foo.bar")

        #Test http failure
        _http_request.side_effect = IOError("IO failure")
        self.assertRaises(restutil.HttpError, restutil.http_get, "http://foo.bar")
    
if __name__ == '__main__':
    unittest.main()
if __name__ == '__main__':
    unittest.main()