# Copyright 2009-2013 Eucalyptus Systems, Inc.
#
# Redistribution and use of this software in source and binary forms,
# with or without modification, are permitted provided that the following
# conditions are met:
#
#   Redistributions of source code must retain the above copyright notice,
#   this list of conditions and the following disclaimer.
#
#   Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import io
import requestbuilder.exceptions
from requestbuilder.xmlparse import parse_aws_xml
import six


class AWSError(requestbuilder.exceptions.ServerError):
    def __init__(self, response, *args):
        requestbuilder.exceptions.ServerError.__init__(self, response, *args)
        self.code = None  # API error code
        self.message = None  # Error message
        self.elements = {}  # Elements in the error response's body

        if self.body:
            try:
                parsed = parse_aws_xml(io.StringIO(six.text_type(self.body)))
                parsed = parsed[parsed.keys()[0]]  # Strip off the root element
                if 'Errors' in parsed:
                    # This could probably be improved, but meh.  Patches are
                    # welcome.  :)
                    parsed = parsed['Errors']
                if 'Error' in parsed:
                    parsed = parsed['Error']
                if parsed.get('Code'):
                    self.code = parsed['Code']
                    self.args += (parsed['Code'],)
                self.message = parsed.get('Message')
                self.elements = parsed
            except ValueError:
                # Dump the unparseable message body so we don't include
                # unusable garbage in the exception.  Since Eucalyptus
                # frequently returns plain text and/or broken XML, store it
                # in case we need it later.
                self.message = self.body
            self.args += (self.message,)

    def format_for_cli(self):
        return 'error ({0}): {1}'.format(self.code or self.status_code,
                                         self.message or self.reason)