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

from datetime import datetime, timedelta

from calendar import timegm

from django.test import TestCase

from django.utils.http import parse_etags, quote_etag

FULL_RESPONSE = 'Test conditional get response'

LAST_MODIFIED = datetime(2007, 10, 21, 23, 21, 47)

LAST_MODIFIED_STR = 'Sun, 21 Oct 2007 23:21:47 GMT'

EXPIRED_LAST_MODIFIED_STR = 'Sat, 20 Oct 2007 23:21:47 GMT'

ETAG = 'b4246ffc4f62314ca13147c9d4f76974'

EXPIRED_ETAG = '7fae4cd4b0f81e7d2914700043aa8ed6'

class ConditionalGet(TestCase):

    def assertFullResponse(self, response, check_last_modified=True, check_etag=True):

        self.assertEquals(response.status_code, 200)

        self.assertEquals(response.content, FULL_RESPONSE)

        if check_last_modified:

            self.assertEquals(response['Last-Modified'], LAST_MODIFIED_STR)

        if check_etag:

            self.assertEquals(response['ETag'], '"%s"' % ETAG)

    def assertNotModified(self, response):

        self.assertEquals(response.status_code, 304)

        self.assertEquals(response.content, '')

    def testWithoutConditions(self):

        response = self.client.get('/condition/')

        self.assertFullResponse(response)

    def testIfModifiedSince(self):

        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = LAST_MODIFIED_STR

        response = self.client.get('/condition/')

        self.assertNotModified(response)

        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = EXPIRED_LAST_MODIFIED_STR

        response = self.client.get('/condition/')

        self.assertFullResponse(response)

    def testIfNoneMatch(self):

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s"' % ETAG

        response = self.client.get('/condition/')

        self.assertNotModified(response)

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s"' % EXPIRED_ETAG

        response = self.client.get('/condition/')

        self.assertFullResponse(response)

        # Several etags in If-None-Match is a bit exotic but why not?

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s", "%s"' % (ETAG, EXPIRED_ETAG)

        response = self.client.get('/condition/')

        self.assertNotModified(response)

    def testIfMatch(self):

        self.client.defaults['HTTP_IF_MATCH'] = '"%s"' % ETAG

        response = self.client.put('/condition/etag/', {'data': ''})

        self.assertEquals(response.status_code, 200)

        self.client.defaults['HTTP_IF_MATCH'] = '"%s"' % EXPIRED_ETAG

        response = self.client.put('/condition/etag/', {'data': ''})

        self.assertEquals(response.status_code, 412)

    def testBothHeaders(self):

        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = LAST_MODIFIED_STR

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s"' % ETAG

        response = self.client.get('/condition/')

        self.assertNotModified(response)

        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = EXPIRED_LAST_MODIFIED_STR

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s"' % ETAG

        response = self.client.get('/condition/')

        self.assertFullResponse(response)

        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = LAST_MODIFIED_STR

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s"' % EXPIRED_ETAG

        response = self.client.get('/condition/')

        self.assertFullResponse(response)

    def testSingleCondition1(self):

        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = LAST_MODIFIED_STR

        response = self.client.get('/condition/last_modified/')

        self.assertNotModified(response)

        response = self.client.get('/condition/etag/')

        self.assertFullResponse(response, check_last_modified=False)

    def testSingleCondition2(self):

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s"' % ETAG

        response = self.client.get('/condition/etag/')

        self.assertNotModified(response)

        response = self.client.get('/condition/last_modified/')

        self.assertFullResponse(response, check_etag=False)

    def testSingleCondition3(self):

        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = EXPIRED_LAST_MODIFIED_STR

        response = self.client.get('/condition/last_modified/')

        self.assertFullResponse(response, check_etag=False)

    def testSingleCondition4(self):

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s"' % EXPIRED_ETAG

        response = self.client.get('/condition/etag/')

        self.assertFullResponse(response, check_last_modified=False)

    def testSingleCondition5(self):

        self.client.defaults['HTTP_IF_MODIFIED_SINCE'] = LAST_MODIFIED_STR

        response = self.client.get('/condition/last_modified2/')

        self.assertNotModified(response)

        response = self.client.get('/condition/etag2/')

        self.assertFullResponse(response, check_last_modified=False)

    def testSingleCondition6(self):

        self.client.defaults['HTTP_IF_NONE_MATCH'] = '"%s"' % ETAG

        response = self.client.get('/condition/etag2/')

        self.assertNotModified(response)

        response = self.client.get('/condition/last_modified2/')

        self.assertFullResponse(response, check_etag=False)

    def testInvalidETag(self):

        self.client.defaults['HTTP_IF_NONE_MATCH'] = r'"\"'

        response = self.client.get('/condition/etag/')

        self.assertFullResponse(response, check_last_modified=False)

class ETagProcesing(TestCase):

    def testParsing(self):

        etags = parse_etags(r'"", "etag", "e\"t\"ag", "e\\tag", W/"weak"')

        self.assertEquals(etags, ['', 'etag', 'e"t"ag', r'e\tag', 'weak'])

    def testQuoting(self):

        quoted_etag = quote_etag(r'e\t"ag')

        self.assertEquals(quoted_etag, r'"e\\t\"ag"')