# -*- coding: utf-8 -*-
#
# Copyright (c) 2015 ThoughtWorks, Inc.
#
# Pixelated is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Pixelated is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
import json
from uuid import uuid4

from leap.mail.adaptors.soledad_indexes import MAIL_INDEXES
from leap.soledad.common.document import SoledadDocument
from mockito import mock, when, verify
import test.support.mockito
from twisted.internet import defer
from twisted.trial.unittest import TestCase
from leap.mail.adaptors.soledad import SoledadMailAdaptor, MailboxWrapper, ContentDocWrapper

from pixelated.adapter.mailstore.leap_attachment_store import LeapAttachmentStore


class TestLeapAttachmentStore(TestCase):
    def setUp(self):
        self.soledad = mock()
        self.mbox_uuid = str(uuid4())
        self.doc_by_id = {}
        self.mbox_uuid_by_name = {}
        self.mbox_soledad_docs = []

        when(self.soledad).get_from_index('by-type', 'mbox').thenAnswer(lambda: defer.succeed(self.mbox_soledad_docs))
        self._mock_get_mailbox('INBOX')

    @defer.inlineCallbacks
    def test_get_mail_attachment(self):
        attachment_id = 'AAAA9AAD9E153D24265395203C53884506ABA276394B9FEC02B214BF9E77E48E'
        doc = SoledadDocument(json=json.dumps({'content_type': 'foo/bar', 'raw': 'asdf'}))
        when(self.soledad).get_from_index('by-type-and-payloadhash', 'cnt', attachment_id).thenReturn(defer.succeed([doc]))
        store = LeapAttachmentStore(self.soledad)

        attachment = yield store.get_mail_attachment(attachment_id)

        self.assertEqual({'content-type': 'foo/bar', 'content': bytearray('asdf')}, attachment)

    @defer.inlineCallbacks
    def test_store_attachment(self):
        content = 'this is some attachment content'
        content_type = 'text/plain'
        cdoc_serialized = {'content_transfer_encoding': 'base64', 'lkf': [], 'content_disposition': 'attachment',
                           'ctype': '', 'raw': 'dGhpcyBpcyBzb21lIGF0dGFjaG1lbnQgY29udGVudA==',
                           'phash': '9863729729D2E2EE8E52F0A7115CE33AD18DDA4B58E49AE08DD092D1C8E699B0',
                           'content_type': 'text/plain', 'type': 'cnt'}

        store = LeapAttachmentStore(self.soledad)

        attachment_id = yield store.add_attachment(content, content_type)

        self.assertEqual('9863729729D2E2EE8E52F0A7115CE33AD18DDA4B58E49AE08DD092D1C8E699B0', attachment_id)

        verify(self.soledad).create_doc(cdoc_serialized, doc_id=attachment_id)

    @defer.inlineCallbacks
    def test_get_mail_attachment_different_content_encodings(self):
        attachment_id = '1B0A9AAD9E153D24265395203C53884506ABA276394B9FEC02B214BF9E77E48E'
        encoding_examples = [('', 'asdf', 'asdf'),
                             ('base64', 'asdf', 'YXNkZg=='),
                             ('quoted-printable', 'äsdf', '=C3=A4sdf')]

        for transfer_encoding, data, encoded_data in encoding_examples:
            doc = SoledadDocument(json=json.dumps({'content_type': 'foo/bar', 'raw': encoded_data,
                                                   'content_transfer_encoding': transfer_encoding}))
            when(self.soledad).get_from_index('by-type-and-payloadhash', 'cnt', attachment_id).thenReturn(defer.succeed([doc]))
            store = LeapAttachmentStore(self.soledad)

            attachment = yield store.get_mail_attachment(attachment_id)

            self.assertEqual(bytearray(data), attachment['content'])

    @defer.inlineCallbacks
    def test_get_mail_attachment_throws_exception_if_attachment_does_not_exist(self):
        attachment_id = '1B0A9AAD9E153D24265395203C53884506ABA276394B9FEC02B214BF9E77E48E'
        when(self.soledad).get_from_index('by-type-and-payloadhash', 'cnt', attachment_id).thenReturn(defer.succeed([]))
        store = LeapAttachmentStore(self.soledad)
        try:
            yield store.get_mail_attachment(attachment_id)
            self.fail('ValueError exception expected')
        except ValueError:
            pass

    def _mock_get_mailbox(self, mailbox_name, create_new_uuid=False):
        mbox_uuid = self.mbox_uuid if not create_new_uuid else str(uuid4())
        when(self.soledad).list_indexes().thenReturn(defer.succeed(MAIL_INDEXES)).thenReturn(
            defer.succeed(MAIL_INDEXES))
        doc_id = str(uuid4())
        mbox = MailboxWrapper(doc_id=doc_id, mbox=mailbox_name, uuid=mbox_uuid)
        soledad_doc = SoledadDocument(doc_id, json=json.dumps(mbox.serialize()))
        when(self.soledad).get_from_index('by-type-and-mbox', 'mbox', mailbox_name).thenReturn(defer.succeed([soledad_doc]))
        self._mock_get_soledad_doc(doc_id, mbox)

        self.mbox_uuid_by_name[mailbox_name] = mbox_uuid
        self.mbox_soledad_docs.append(soledad_doc)

        return mbox, soledad_doc

    def _mock_get_soledad_doc(self, doc_id, doc):
        soledad_doc = SoledadDocument(doc_id, json=json.dumps(doc.serialize()))

        # when(self.soledad).get_doc(doc_id).thenReturn(defer.succeed(soledad_doc))
        when(self.soledad).get_doc(doc_id).thenAnswer(lambda: defer.succeed(soledad_doc))

        self.doc_by_id[doc_id] = soledad_doc