# -*- coding: utf-8 -*-
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"""Integration tests for StorageUri interface."""

import binascii
import re

from six import StringIO

from boto import storage_uri
from boto.exception import BotoClientError
from boto.gs.acl import SupportedPermissions as perms
from tests.integration.gs.testcase import GSTestCase


class GSStorageUriTest(GSTestCase):

    def testHasVersion(self):
        uri = storage_uri("gs://bucket/obj")
        self.assertFalse(uri.has_version())
        uri.version_id = "versionid"
        self.assertTrue(uri.has_version())

        uri = storage_uri("gs://bucket/obj")
        # Generation triggers versioning.
        uri.generation = 12345
        self.assertTrue(uri.has_version())
        uri.generation = None
        self.assertFalse(uri.has_version())

        # Zero-generation counts as a version.
        uri = storage_uri("gs://bucket/obj")
        uri.generation = 0
        self.assertTrue(uri.has_version())

    def testCloneReplaceKey(self):
        b = self._MakeBucket()
        k = b.new_key("obj")
        k.set_contents_from_string("stringdata")

        orig_uri = storage_uri("gs://%s/" % b.name)

        uri = orig_uri.clone_replace_key(k)
        self.assertTrue(uri.has_version())
        self.assertRegex(str(uri.generation), r"[0-9]+")

    def testSetAclXml(self):
        """Ensures that calls to the set_xml_acl functions succeed."""
        b = self._MakeBucket()
        k = b.new_key("obj")
        k.set_contents_from_string("stringdata")
        bucket_uri = storage_uri("gs://%s/" % b.name)

        # Get a valid ACL for an object.
        bucket_uri.object_name = "obj"
        bucket_acl = bucket_uri.get_acl()
        bucket_uri.object_name = None

        # Add a permission to the ACL.
        all_users_read_permission = ("<Entry><Scope type='AllUsers'/>"
                                     "<Permission>READ</Permission></Entry>")
        acl_string = re.sub(r"</Entries>",
                           all_users_read_permission + "</Entries>",
                           bucket_acl.to_xml())

        # Test-generated owner IDs are not currently valid for buckets
        acl_no_owner_string = re.sub(r"<Owner>.*</Owner>", "", acl_string)

        # Set ACL on an object.
        bucket_uri.set_xml_acl(acl_string, "obj")
        # Set ACL on a bucket.
        bucket_uri.set_xml_acl(acl_no_owner_string)
        # Set the default ACL for a bucket.
        bucket_uri.set_def_xml_acl(acl_no_owner_string)

        # Verify all the ACLs were successfully applied.
        new_obj_acl_string = k.get_acl().to_xml()
        new_bucket_acl_string = bucket_uri.get_acl().to_xml()
        new_bucket_def_acl_string = bucket_uri.get_def_acl().to_xml()
        self.assertRegex(new_obj_acl_string, r"AllUsers")
        self.assertRegex(new_bucket_acl_string, r"AllUsers")
        self.assertRegex(new_bucket_def_acl_string, r"AllUsers")

    def testPropertiesUpdated(self):
        b = self._MakeBucket()
        bucket_uri = storage_uri("gs://%s" % b.name)
        key_uri = bucket_uri.clone_replace_name("obj")
        key_uri.set_contents_from_string("data1")

        self.assertRegex(str(key_uri.generation), r"[0-9]+")
        k = b.get_key("obj")
        self.assertEqual(k.generation, key_uri.generation)
        self.assertEqual(k.get_contents_as_string(), "data1")

        key_uri.set_contents_from_stream(StringIO.StringIO("data2"))
        self.assertRegex(str(key_uri.generation), r"[0-9]+")
        self.assertGreater(key_uri.generation, k.generation)
        k = b.get_key("obj")
        self.assertEqual(k.generation, key_uri.generation)
        self.assertEqual(k.get_contents_as_string(), "data2")

        key_uri.set_contents_from_file(StringIO.StringIO("data3"))
        self.assertRegex(str(key_uri.generation), r"[0-9]+")
        self.assertGreater(key_uri.generation, k.generation)
        k = b.get_key("obj")
        self.assertEqual(k.generation, key_uri.generation)
        self.assertEqual(k.get_contents_as_string(), "data3")

    def testCompose(self):
        data1 = 'hello '
        data2 = 'world!'
        expected_crc = 1238062967

        b = self._MakeBucket()
        bucket_uri = storage_uri("gs://%s" % b.name)
        key_uri1 = bucket_uri.clone_replace_name("component1")
        key_uri1.set_contents_from_string(data1)
        key_uri2 = bucket_uri.clone_replace_name("component2")
        key_uri2.set_contents_from_string(data2)

        # Simple compose.
        key_uri_composite = bucket_uri.clone_replace_name("composite")
        components = [key_uri1, key_uri2]
        key_uri_composite.compose(components, content_type='text/plain')
        self.assertEqual(key_uri_composite.get_contents_as_string(),
                          data1 + data2)
        composite_key = key_uri_composite.get_key()
        cloud_crc32c = binascii.hexlify(
            composite_key.cloud_hashes['crc32c'])
        self.assertEqual(cloud_crc32c, hex(expected_crc)[2:])
        self.assertEqual(composite_key.content_type, 'text/plain')

        # Compose disallowed between buckets.
        key_uri1.bucket_name += '2'
        try:
            key_uri_composite.compose(components)
            self.fail('Composing between buckets didn\'t fail as expected.')
        except BotoClientError as err:
            self.assertEqual(
                err.reason, 'GCS does not support inter-bucket composing')

