# -*- coding: utf-8 -*-
# Copyright 2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from synapse.replication.resource import ReplicationResource
from synapse.types import Requester, UserID

from twisted.internet import defer
from tests import unittest
from tests.utils import setup_test_homeserver, requester_for_user
from mock import Mock, NonCallableMock
import json
import contextlib


class ReplicationResourceCase(unittest.TestCase):
    @defer.inlineCallbacks
    def setUp(self):
        self.hs = yield setup_test_homeserver(
            "red",
            http_client=None,
            replication_layer=Mock(),
            ratelimiter=NonCallableMock(spec_set=[
                "send_message",
            ]),
        )
        self.user_id = "@seeing:red"
        self.user = UserID.from_string(self.user_id)

        self.hs.get_ratelimiter().send_message.return_value = (True, 0)

        self.resource = ReplicationResource(self.hs)

    @defer.inlineCallbacks
    def test_streams(self):
        # Passing "-1" returns the current stream positions
        code, body = yield self.get(streams="-1")
        self.assertEquals(code, 200)
        self.assertEquals(body["streams"]["field_names"], ["name", "position"])
        position = body["streams"]["position"]
        # Passing the current position returns an empty response after the
        # timeout
        get = self.get(streams=str(position), timeout="0")
        self.hs.clock.advance_time_msec(1)
        code, body = yield get
        self.assertEquals(code, 200)
        self.assertEquals(body, {})

    @defer.inlineCallbacks
    def test_events_and_state(self):
        get = self.get(events="-1", state="-1", timeout="0")
        yield self.hs.get_handlers().room_creation_handler.create_room(
            Requester(self.user, "", False), {}
        )
        code, body = yield get
        self.assertEquals(code, 200)
        self.assertEquals(body["events"]["field_names"], [
            "position", "internal", "json", "state_group"
        ])
        self.assertEquals(body["state_groups"]["field_names"], [
            "position", "room_id", "event_id"
        ])
        self.assertEquals(body["state_group_state"]["field_names"], [
            "position", "type", "state_key", "event_id"
        ])

    @defer.inlineCallbacks
    def test_presence(self):
        get = self.get(presence="-1")
        yield self.hs.get_handlers().presence_handler.set_state(
            self.user, {"presence": "online"}
        )
        code, body = yield get
        self.assertEquals(code, 200)
        self.assertEquals(body["presence"]["field_names"], [
            "position", "user_id", "state", "last_active_ts",
            "last_federation_update_ts", "last_user_sync_ts",
            "status_msg", "currently_active",
        ])

    @defer.inlineCallbacks
    def test_typing(self):
        room_id = yield self.create_room()
        get = self.get(typing="-1")
        yield self.hs.get_handlers().typing_notification_handler.started_typing(
            self.user, self.user, room_id, timeout=2
        )
        code, body = yield get
        self.assertEquals(code, 200)
        self.assertEquals(body["typing"]["field_names"], [
            "position", "room_id", "typing"
        ])

    @defer.inlineCallbacks
    def test_receipts(self):
        room_id = yield self.create_room()
        event_id = yield self.send_text_message(room_id, "Hello, World")
        get = self.get(receipts="-1")
        yield self.hs.get_handlers().receipts_handler.received_client_receipt(
            room_id, "m.read", self.user_id, event_id
        )
        code, body = yield get
        self.assertEquals(code, 200)
        self.assertEquals(body["receipts"]["field_names"], [
            "position", "room_id", "receipt_type", "user_id", "event_id", "data"
        ])

    def _test_timeout(stream):
        """Check that a request for the given stream timesout"""
        @defer.inlineCallbacks
        def test_timeout(self):
            get = self.get(**{stream: "-1", "timeout": "0"})
            self.hs.clock.advance_time_msec(1)
            code, body = yield get
            self.assertEquals(code, 200)
            self.assertEquals(body, {})
        test_timeout.__name__ = "test_timeout_%s" % (stream)
        return test_timeout

    test_timeout_events = _test_timeout("events")
    test_timeout_presence = _test_timeout("presence")
    test_timeout_typing = _test_timeout("typing")
    test_timeout_receipts = _test_timeout("receipts")
    test_timeout_user_account_data = _test_timeout("user_account_data")
    test_timeout_room_account_data = _test_timeout("room_account_data")
    test_timeout_tag_account_data = _test_timeout("tag_account_data")
    test_timeout_backfill = _test_timeout("backfill")
    test_timeout_push_rules = _test_timeout("push_rules")
    test_timeout_pushers = _test_timeout("pushers")
    test_timeout_state = _test_timeout("state")

    @defer.inlineCallbacks
    def send_text_message(self, room_id, message):
        handler = self.hs.get_handlers().message_handler
        event = yield handler.create_and_send_nonmember_event(
            requester_for_user(self.user),
            {
                "type": "m.room.message",
                "content": {"body": "message", "msgtype": "m.text"},
                "room_id": room_id,
                "sender": self.user.to_string(),
            }
        )
        defer.returnValue(event.event_id)

    @defer.inlineCallbacks
    def create_room(self):
        result = yield self.hs.get_handlers().room_creation_handler.create_room(
            Requester(self.user, "", False), {}
        )
        defer.returnValue(result["room_id"])

    @defer.inlineCallbacks
    def get(self, **params):
        request = NonCallableMock(spec_set=[
            "write", "finish", "setResponseCode", "setHeader", "args",
            "method", "processing"
        ])

        request.method = "GET"
        request.args = {k: [v] for k, v in params.items()}

        @contextlib.contextmanager
        def processing():
            yield
        request.processing = processing

        yield self.resource._async_render_GET(request)
        self.assertTrue(request.finish.called)

        if request.setResponseCode.called:
            response_code = request.setResponseCode.call_args[0][0]
        else:
            response_code = 200

        response_json = "".join(
            call[0][0] for call in request.write.call_args_list
        )
        response_body = json.loads(response_json)

        if response_code == 200:
            self.check_response(response_body)

        defer.returnValue((response_code, response_body))

    def check_response(self, response_body):
        for name, stream in response_body.items():
            self.assertIn("field_names", stream)
            field_names = stream["field_names"]
            self.assertIn("rows", stream)
            self.assertTrue(stream["rows"])
            for row in stream["rows"]:
                self.assertEquals(
                    len(row), len(field_names),
                    "%s: len(row = %r) == len(field_names = %r)" % (
                        name, row, field_names
                    )
                )