from typing import Any, List, Mapping

import orjson

from zerver.lib.test_classes import ZulipTestCase
from zerver.lib.test_helpers import queries_captured
from zerver.models import Huddle, get_huddle_hash


class TypingValidateOperatorTest(ZulipTestCase):
    def test_missing_parameter(self) -> None:
        """
        Sending typing notification without op parameter fails
        """
        sender = self.example_user("hamlet")
        params = dict(
            to=orjson.dumps([sender.id]).decode(),
        )
        result = self.api_post(sender, "/api/v1/typing", params)
        self.assert_json_error(result, "Missing 'op' argument")

    def test_invalid_parameter_pm(self) -> None:
        """
        Sending typing notification with invalid value for op parameter fails
        """
        sender = self.example_user("hamlet")
        params = dict(
            to=orjson.dumps([sender.id]).decode(),
            op="foo",
        )
        result = self.api_post(sender, "/api/v1/typing", params)
        self.assert_json_error(result, "Invalid op")

    def test_invalid_parameter_stream(self) -> None:
        sender = self.example_user("hamlet")

        result = self.api_post(
            sender, "/api/v1/typing", {"op": "foo", "stream_id": 1, "topic": "topic"}
        )
        self.assert_json_error(result, "Invalid op")


class TypingMessagetypeTest(ZulipTestCase):
    def test_invalid_type(self) -> None:
        sender = self.example_user("hamlet")
        params = dict(
            to=orjson.dumps([sender.id]).decode(),
            type="invalid",
            op="start",
        )
        result = self.api_post(sender, "/api/v1/typing", params)
        self.assert_json_error(result, "Invalid type")


class TypingValidateToArgumentsTest(ZulipTestCase):
    def test_empty_to_array_pms(self) -> None:
        """
        Sending pms typing notification without recipient fails
        """
        sender = self.example_user("hamlet")
        result = self.api_post(sender, "/api/v1/typing", {"op": "start", "to": "[]"})
        self.assert_json_error(result, "Empty 'to' list")

    def test_empty_to_array_stream(self) -> None:
        """
        Sending stream typing notification without recipient fails
        """
        sender = self.example_user("hamlet")
        result = self.api_post(
            sender, "/api/v1/typing", {"type": "stream", "op": "start", "to": "[]"}
        )
        self.assert_json_error(result, "Empty 'to' list")

    def test_missing_recipient(self) -> None:
        """
        Sending typing notification without recipient fails
        """
        sender = self.example_user("hamlet")
        result = self.api_post(sender, "/api/v1/typing", {"op": "start"})
        self.assert_json_error(result, "Missing 'to' argument")

    def test_argument_to_is_not_valid_json(self) -> None:
        """
        Sending typing notification to invalid recipient fails
        """
        sender = self.example_user("hamlet")
        invalid = "bad email"
        result = self.api_post(sender, "/api/v1/typing", {"op": "start", "to": invalid})
        self.assert_json_error(result, 'Argument "to" is not valid JSON.')

    def test_bogus_user_id(self) -> None:
        """
        Sending typing notification to invalid recipient fails
        """
        sender = self.example_user("hamlet")
        invalid = "[9999999]"
        result = self.api_post(sender, "/api/v1/typing", {"op": "start", "to": invalid})
        self.assert_json_error(result, "Invalid user ID 9999999")

    def test_send_multiple_stream_ids(self) -> None:
        sender = self.example_user("hamlet")

        result = self.api_post(
            sender, "/api/v1/typing", {"type": "stream", "op": "stop", "to": "[1, 2, 3]"}
        )
        self.assert_json_error(result, "Cannot send to multiple streams")

    def test_includes_stream_id_but_not_topic(self) -> None:
        sender = self.example_user("hamlet")
        stream_id = self.get_stream_id("general")

        result = self.api_post(
            sender,
            "/api/v1/typing",
            {"type": "stream", "op": "start", "to": orjson.dumps([stream_id]).decode()},
        )
        self.assert_json_error(result, "Missing topic")

    def test_stream_doesnt_exist(self) -> None:
        sender = self.example_user("hamlet")
        stream_id = self.INVALID_STREAM_ID
        topic = "some topic"

        result = self.api_post(
            sender,
            "/api/v1/typing",
            {
                "type": "stream",
                "op": "start",
                "to": orjson.dumps([stream_id]).decode(),
                "topic": topic,
            },
        )
        self.assert_json_error(result, "Invalid stream id")


class TypingHappyPathTestPMs(ZulipTestCase):
    def test_start_to_single_recipient(self) -> None:
        sender = self.example_user("hamlet")
        recipient_user = self.example_user("othello")
        expected_recipients = {sender, recipient_user}
        expected_recipient_emails = {user.email for user in expected_recipients}
        expected_recipient_ids = {user.id for user in expected_recipients}

        params = dict(
            to=orjson.dumps([recipient_user.id]).decode(),
            op="start",
        )

        events: List[Mapping[str, Any]] = []
        with queries_captured() as queries:
            with self.tornado_redirected_to_list(events, expected_num_events=1):
                result = self.api_post(sender, "/api/v1/typing", params)

        self.assert_json_success(result)
        self.assert_length(events, 1)
        self.assert_length(queries, 4)

        event = events[0]["event"]
        event_recipient_emails = {user["email"] for user in event["recipients"]}
        event_user_ids = set(events[0]["users"])
        event_recipient_user_ids = {user["user_id"] for user in event["recipients"]}

        self.assertEqual(expected_recipient_ids, event_recipient_user_ids)
        self.assertEqual(expected_recipient_ids, event_user_ids)
        self.assertEqual(event["sender"]["email"], sender.email)
        self.assertEqual(event_recipient_emails, expected_recipient_emails)
        self.assertEqual(event["type"], "typing")
        self.assertEqual(event["op"], "start")

    def test_start_to_multiple_recipients(self) -> None:
        sender = self.example_user("hamlet")
        recipient_users = [self.example_user("othello"), self.example_user("cordelia")]
        expected_recipients = set(recipient_users) | {sender}
        expected_recipient_emails = {user.email for user in expected_recipients}
        expected_recipient_ids = {user.id for user in expected_recipients}

        huddle_hash = get_huddle_hash(list(expected_recipient_ids))
        self.assertFalse(Huddle.objects.filter(huddle_hash=huddle_hash).exists())

        events: List[Mapping[str, Any]] = []

        params = dict(
            to=orjson.dumps([user.id for user in recipient_users]).decode(),
            op="start",
        )

        with queries_captured() as queries:
            with self.tornado_redirected_to_list(events, expected_num_events=1):
                result = self.api_post(sender, "/api/v1/typing", params)
        self.assert_json_success(result)
        self.assert_length(events, 1)
        self.assert_length(queries, 5)

        # We should not be adding new Huddles just because
        # a user started typing in the compose box.  Let's
        # wait till they send an actual message.
        self.assertFalse(Huddle.objects.filter(huddle_hash=huddle_hash).exists())

        event = events[0]["event"]
        event_recipient_emails = {user["email"] for user in event["recipients"]}
        event_user_ids = set(events[0]["users"])
        event_recipient_user_ids = {user["user_id"] for user in event["recipients"]}

        self.assertEqual(expected_recipient_ids, event_recipient_user_ids)
        self.assertEqual(expected_recipient_ids, event_user_ids)
        self.assertEqual(event["sender"]["email"], sender.email)
        self.assertEqual(event_recipient_emails, expected_recipient_emails)
        self.assertEqual(event["type"], "typing")
        self.assertEqual(event["op"], "start")

    def test_start_to_self(self) -> None:
        """
        Sending typing notification to yourself (using user IDs)
        is successful.
        """
        user = self.example_user("hamlet")
        email = user.email
        expected_recipient_emails = {email}
        expected_recipient_ids = {user.id}
        events: List[Mapping[str, Any]] = []
        with self.tornado_redirected_to_list(events, expected_num_events=1):
            result = self.api_post(
                user,
                "/api/v1/typing",
                {
                    "to": orjson.dumps([user.id]).decode(),
                    "op": "start",
                },
            )
        self.assert_json_success(result)
        self.assert_length(events, 1)

        event = events[0]["event"]
        event_recipient_emails = {user["email"] for user in event["recipients"]}
        event_user_ids = set(events[0]["users"])
        event_recipient_user_ids = {user["user_id"] for user in event["recipients"]}

        self.assertEqual(expected_recipient_ids, event_recipient_user_ids)
        self.assertEqual(expected_recipient_ids, event_user_ids)
        self.assertEqual(event_recipient_emails, expected_recipient_emails)
        self.assertEqual(event["sender"]["email"], email)
        self.assertEqual(event["type"], "typing")
        self.assertEqual(event["op"], "start")

    def test_start_to_another_user(self) -> None:
        """
        Sending typing notification to another user
        is successful.
        """
        sender = self.example_user("hamlet")
        recipient = self.example_user("othello")
        expected_recipients = {sender, recipient}
        expected_recipient_emails = {user.email for user in expected_recipients}
        expected_recipient_ids = {user.id for user in expected_recipients}

        params = dict(
            to=orjson.dumps([recipient.id]).decode(),
            op="start",
        )

        events: List[Mapping[str, Any]] = []
        with self.tornado_redirected_to_list(events, expected_num_events=1):
            result = self.api_post(sender, "/api/v1/typing", params)

        self.assert_json_success(result)
        self.assert_length(events, 1)

        event = events[0]["event"]
        event_recipient_emails = {user["email"] for user in event["recipients"]}
        event_user_ids = set(events[0]["users"])
        event_recipient_user_ids = {user["user_id"] for user in event["recipients"]}

        self.assertEqual(expected_recipient_ids, event_recipient_user_ids)
        self.assertEqual(expected_recipient_ids, event_user_ids)
        self.assertEqual(event_recipient_emails, expected_recipient_emails)
        self.assertEqual(event["sender"]["email"], sender.email)
        self.assertEqual(event["type"], "typing")
        self.assertEqual(event["op"], "start")

    def test_stop_to_self(self) -> None:
        """
        Sending stopped typing notification to yourself
        is successful.
        """
        user = self.example_user("hamlet")
        email = user.email
        expected_recipient_emails = {email}
        expected_recipient_ids = {user.id}

        events: List[Mapping[str, Any]] = []
        with self.tornado_redirected_to_list(events, expected_num_events=1):
            params = dict(
                to=orjson.dumps([user.id]).decode(),
                op="stop",
            )
            result = self.api_post(user, "/api/v1/typing", params)

        self.assert_json_success(result)
        self.assert_length(events, 1)

        event = events[0]["event"]
        event_recipient_emails = {user["email"] for user in event["recipients"]}
        event_user_ids = set(events[0]["users"])
        event_recipient_user_ids = {user["user_id"] for user in event["recipients"]}

        self.assertEqual(expected_recipient_ids, event_recipient_user_ids)
        self.assertEqual(expected_recipient_ids, event_user_ids)
        self.assertEqual(event_recipient_emails, expected_recipient_emails)
        self.assertEqual(event["sender"]["email"], email)
        self.assertEqual(event["type"], "typing")
        self.assertEqual(event["op"], "stop")

    def test_stop_to_another_user(self) -> None:
        """
        Sending stopped typing notification to another user
        is successful.
        """
        sender = self.example_user("hamlet")
        recipient = self.example_user("othello")
        expected_recipients = {sender, recipient}
        expected_recipient_emails = {user.email for user in expected_recipients}
        expected_recipient_ids = {user.id for user in expected_recipients}

        events: List[Mapping[str, Any]] = []
        with self.tornado_redirected_to_list(events, expected_num_events=1):
            params = dict(
                to=orjson.dumps([recipient.id]).decode(),
                op="stop",
            )
            result = self.api_post(sender, "/api/v1/typing", params)

        self.assert_json_success(result)
        self.assert_length(events, 1)

        event = events[0]["event"]
        event_recipient_emails = {user["email"] for user in event["recipients"]}
        event_user_ids = set(events[0]["users"])
        event_recipient_user_ids = {user["user_id"] for user in event["recipients"]}

        self.assertEqual(expected_recipient_ids, event_recipient_user_ids)
        self.assertEqual(expected_recipient_ids, event_user_ids)
        self.assertEqual(event_recipient_emails, expected_recipient_emails)
        self.assertEqual(event["sender"]["email"], sender.email)
        self.assertEqual(event["type"], "typing")
        self.assertEqual(event["op"], "stop")


class TypingHappyPathTestStreams(ZulipTestCase):
    def test_start(self) -> None:
        sender = self.example_user("hamlet")
        stream_name = self.get_streams(sender)[0]
        stream_id = self.get_stream_id(stream_name)
        topic = "Some topic"

        expected_user_ids = {
            user_profile.id
            for user_profile in self.users_subscribed_to_stream(stream_name, sender.realm)
        }

        params = dict(
            type="stream",
            op="start",
            to=orjson.dumps([stream_id]).decode(),
            topic=topic,
        )

        events: List[Mapping[str, Any]] = []
        with queries_captured() as queries:
            with self.tornado_redirected_to_list(events, expected_num_events=1):
                result = self.api_post(sender, "/api/v1/typing", params)
        self.assert_json_success(result)
        self.assert_length(events, 1)
        self.assert_length(queries, 5)

        event = events[0]["event"]
        event_user_ids = set(events[0]["users"])

        self.assertEqual(expected_user_ids, event_user_ids)
        self.assertEqual(sender.email, event["sender"]["email"])
        self.assertEqual(stream_id, event["stream_id"])
        self.assertEqual(topic, event["topic"])
        self.assertEqual("typing", event["type"])
        self.assertEqual("start", event["op"])

    def test_stop(self) -> None:
        sender = self.example_user("hamlet")
        stream_name = self.get_streams(sender)[0]
        stream_id = self.get_stream_id(stream_name)
        topic = "Some topic"

        expected_user_ids = {
            user_profile.id
            for user_profile in self.users_subscribed_to_stream(stream_name, sender.realm)
        }

        params = dict(
            type="stream",
            op="stop",
            to=orjson.dumps([stream_id]).decode(),
            topic=topic,
        )

        events: List[Mapping[str, Any]] = []
        with queries_captured() as queries:
            with self.tornado_redirected_to_list(events, expected_num_events=1):
                result = self.api_post(sender, "/api/v1/typing", params)
        self.assert_json_success(result)
        self.assert_length(events, 1)
        self.assert_length(queries, 5)

        event = events[0]["event"]
        event_user_ids = set(events[0]["users"])

        self.assertEqual(expected_user_ids, event_user_ids)
        self.assertEqual(sender.email, event["sender"]["email"])
        self.assertEqual(stream_id, event["stream_id"])
        self.assertEqual(topic, event["topic"])
        self.assertEqual("typing", event["type"])
        self.assertEqual("stop", event["op"])


class TestSendTypingNotificationsSettings(ZulipTestCase):
    def test_send_private_typing_notifications_setting(self) -> None:
        sender = self.example_user("hamlet")
        recipient_user = self.example_user("othello")
        expected_recipients = {sender, recipient_user}
        expected_recipient_ids = {user.id for user in expected_recipients}

        params = dict(
            to=orjson.dumps([recipient_user.id]).decode(),
            op="start",
        )

        # Test typing events sent when `send_private_typing_notifications` set to `True`.
        self.assertTrue(sender.send_private_typing_notifications)

        events: List[Mapping[str, Any]] = []
        with self.tornado_redirected_to_list(events, expected_num_events=1):
            result = self.api_post(sender, "/api/v1/typing", params)

        self.assert_json_success(result)
        self.assert_length(events, 1)
        event_user_ids = set(events[0]["users"])
        self.assertEqual(expected_recipient_ids, event_user_ids)
        self.assertEqual(orjson.loads(result.content)["msg"], "")

        sender.send_private_typing_notifications = False
        sender.save()

        # No events should be sent now
        events = []
        with self.tornado_redirected_to_list(events, expected_num_events=0):
            result = self.api_post(sender, "/api/v1/typing", params)

        self.assert_json_error(
            result, "User has disabled typing notifications for private messages"
        )
        self.assertEqual(events, [])

    def test_send_stream_typing_notifications_setting(self) -> None:
        sender = self.example_user("hamlet")
        stream_name = self.get_streams(sender)[0]
        stream_id = self.get_stream_id(stream_name)
        topic = "Some topic"

        expected_user_ids = {
            user_profile.id
            for user_profile in self.users_subscribed_to_stream(stream_name, sender.realm)
        }

        params = dict(
            type="stream",
            op="start",
            to=orjson.dumps([stream_id]).decode(),
            topic=topic,
        )

        # Test typing events sent when `send_stream_typing_notifications` set to `True`.
        self.assertTrue(sender.send_stream_typing_notifications)

        events: List[Mapping[str, Any]] = []
        with self.tornado_redirected_to_list(events, expected_num_events=1):
            result = self.api_post(sender, "/api/v1/typing", params)
        self.assert_json_success(result)
        self.assert_length(events, 1)
        self.assertEqual(orjson.loads(result.content)["msg"], "")
        event_user_ids = set(events[0]["users"])
        self.assertEqual(expected_user_ids, event_user_ids)

        sender.send_stream_typing_notifications = False
        sender.save()

        # No events should be sent now
        events = []
        with self.tornado_redirected_to_list(events, expected_num_events=0):
            result = self.api_post(sender, "/api/v1/typing", params)
        self.assert_json_error(result, "User has disabled typing notifications for stream messages")
        self.assertEqual(events, [])