# -*- coding: utf-8 -*-
# test_incoming_server.py
# Copyright (C) 2017 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Integration tests for incoming API
"""
import pytest
import treq
from io import BytesIO
from uuid import uuid4
from twisted.web.server import Site
from twisted.internet import reactor
from twisted.internet import defer
from twisted.web.test.requesthelper import DummyRequest

from leap.soledad.server._incoming import IncomingResource
from leap.soledad.server._blobs import BlobsServerState
from leap.soledad.server._incoming import IncomingFormatter
from leap.soledad.common.crypto import EncryptionSchemes
from leap.soledad.common.blobs.preamble import decode_preamble
from leap.soledad.common.blobs import Flags
from test_soledad.util import CouchServerStateForTests
from test_soledad.util import CouchDBTestCase


@pytest.mark.needs_couch
class IncomingOnCouchServerTestCase(CouchDBTestCase):

    def setUp(self):
        self.port = None

    def tearDown(self):
        if self.port:
            self.port.stopListening()

    def prepare(self, backend):
        self.user_id = 'user-' + uuid4().hex
        if backend == 'couch':
            self.state = CouchServerStateForTests(self.couch_url)
            self.state.ensure_database(self.user_id)
        else:
            self.state = BlobsServerState(backend)
        root = IncomingResource(self.state)
        site = Site(root)
        self.port = reactor.listenTCP(0, site, interface='127.0.0.1')
        self.host = self.port.getHost()
        self.uri = 'http://%s:%s/' % (self.host.host, self.host.port)

    @defer.inlineCallbacks
    @pytest.mark.usefixtures("method_tmpdir")
    def test_put_incoming_creates_a_document_using_couch(self):
        self.prepare('couch')
        user_id, doc_id = self.user_id, uuid4().hex
        content, scheme = 'Hi', EncryptionSchemes.PUBKEY
        formatter = IncomingFormatter()
        incoming_endpoint = self.uri + '%s/%s' % (user_id, doc_id)
        yield treq.put(incoming_endpoint, BytesIO(content), persistent=False)
        db = self.state.open_database(user_id)

        doc = db.get_doc(doc_id)
        self.assertEquals(doc.content, formatter.format(content, scheme))

    @defer.inlineCallbacks
    @pytest.mark.usefixtures("method_tmpdir")
    def test_put_incoming_creates_a_blob_using_filesystem(self):
        self.prepare('filesystem')
        user_id, doc_id = self.user_id, uuid4().hex
        content = 'Hi'
        formatter = IncomingFormatter()
        incoming_endpoint = self.uri + '%s/%s' % (user_id, doc_id)
        yield treq.put(incoming_endpoint, BytesIO(content), persistent=False)

        db = self.state.open_database(user_id)
        consumer = DummyRequest([''])
        yield db.read_blob(user_id, doc_id, consumer, namespace='MX')
        flags = yield db.get_flags(user_id, doc_id, namespace='MX')
        data = consumer.written.pop()
        expected_preamble = formatter.preamble(content, doc_id)
        expected_preamble = decode_preamble(expected_preamble, True)
        written_preamble, written_content = data.split()
        written_preamble = decode_preamble(written_preamble, True)
        self.assertEquals(expected_preamble, written_preamble)
        self.assertEquals(content, written_content)
        self.assertIn(Flags.PENDING, flags)