from typing import Any, Dict, List, Union
from unittest import mock

import orjson

from zerver.lib.actions import (
    do_remove_realm_custom_profile_field,
    do_update_user_custom_profile_data_if_changed,
    try_add_realm_custom_profile_field,
    try_reorder_realm_custom_profile_fields,
)
from zerver.lib.external_accounts import DEFAULT_EXTERNAL_ACCOUNTS
from zerver.lib.markdown import markdown_convert
from zerver.lib.test_classes import ZulipTestCase
from zerver.lib.test_helpers import queries_captured
from zerver.models import (
    CustomProfileField,
    CustomProfileFieldValue,
    custom_profile_fields_for_realm,
    get_realm,
)


class CustomProfileFieldTestCase(ZulipTestCase):
    def setUp(self) -> None:
        super().setUp()
        self.realm = get_realm("zulip")
        self.original_count = len(custom_profile_fields_for_realm(self.realm.id))

    def custom_field_exists_in_realm(self, field_id: int) -> bool:
        fields = custom_profile_fields_for_realm(self.realm.id)
        field_ids = [field.id for field in fields]
        return field_id in field_ids


class CreateCustomProfileFieldTest(CustomProfileFieldTestCase):
    def test_create(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        data: Dict[str, Any] = {"name": "Phone", "field_type": "text id"}
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, 'Argument "field_type" is not valid JSON.')

        data["name"] = ""
        data["field_type"] = 100
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Label cannot be blank.")

        data["name"] = "*" * 41
        data["field_type"] = 100
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "name is too long (limit: 40 characters)")

        data["name"] = "Phone"
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Invalid field type.")

        data["name"] = "Phone"
        data["hint"] = "*" * 81
        data["field_type"] = CustomProfileField.SHORT_TEXT
        result = self.client_post("/json/realm/profile_fields", info=data)
        msg = "hint is too long (limit: 80 characters)"
        self.assert_json_error(result, msg)

        data["name"] = "Phone"
        data["hint"] = "Contact number"
        data["field_type"] = CustomProfileField.SHORT_TEXT
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_success(result)

        field = CustomProfileField.objects.get(name="Phone", realm=realm)
        self.assertEqual(field.id, field.order)

        data["name"] = "Name "
        data["hint"] = "Some name"
        data["field_type"] = CustomProfileField.SHORT_TEXT
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_success(result)

        field = CustomProfileField.objects.get(name="Name", realm=realm)
        self.assertEqual(field.id, field.order)

        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "A field with that label already exists.")

    def test_create_select_field(self) -> None:
        self.login("iago")
        data: Dict[str, Union[str, int]] = {}
        data["name"] = "Favorite programming language"
        data["field_type"] = CustomProfileField.SELECT

        data["field_data"] = "invalid"
        result = self.client_post("/json/realm/profile_fields", info=data)
        error_msg = "Bad value for 'field_data': invalid"
        self.assert_json_error(result, error_msg)

        data["field_data"] = orjson.dumps(
            {
                "python": ["1"],
                "java": ["2"],
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "field_data is not a dict")

        data["field_data"] = orjson.dumps(
            {
                "python": {"text": "Python"},
                "java": {"text": "Java"},
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "order key is missing from field_data")

        data["field_data"] = orjson.dumps(
            {
                "python": {"text": "Python", "order": ""},
                "java": {"text": "Java", "order": "2"},
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, 'field_data["order"] cannot be blank.')

        data["field_data"] = orjson.dumps(
            {
                "": {"text": "Python", "order": "1"},
                "java": {"text": "Java", "order": "2"},
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "'value' cannot be blank.")

        data["field_data"] = orjson.dumps(
            {
                "python": {"text": "Python", "order": 1},
                "java": {"text": "Java", "order": "2"},
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, 'field_data["order"] is not a string')

        data["field_data"] = orjson.dumps({}).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Field must have at least one choice.")

        data["field_data"] = orjson.dumps(
            {
                "python": {"text": "Python", "order": "1"},
                "java": {"text": "Java", "order": "2"},
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_success(result)

    def test_create_default_external_account_field(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        field_type: int = CustomProfileField.EXTERNAL_ACCOUNT
        field_data: str = orjson.dumps(
            {
                "subtype": "twitter",
            }
        ).decode()
        invalid_field_name: str = "Not required field name"
        invalid_field_hint: str = "Not required field hint"

        result = self.client_post(
            "/json/realm/profile_fields",
            info=dict(
                field_type=field_type,
                field_data=field_data,
                hint=invalid_field_hint,
                name=invalid_field_name,
            ),
        )
        self.assert_json_success(result)
        # Silently overwrite name and hint with values set in default fields dict
        # for default custom external account fields.
        with self.assertRaises(CustomProfileField.DoesNotExist):
            field = CustomProfileField.objects.get(name=invalid_field_name, realm=realm)
        # The field is created with 'Twitter' name as per values in default fields dict
        field = CustomProfileField.objects.get(name="Twitter")
        self.assertEqual(field.name, DEFAULT_EXTERNAL_ACCOUNTS["twitter"]["name"])
        self.assertEqual(field.hint, DEFAULT_EXTERNAL_ACCOUNTS["twitter"]["hint"])

        result = self.client_delete(f"/json/realm/profile_fields/{field.id}")
        self.assert_json_success(result)

        # Should also work without name or hint and only external field type and subtype data
        result = self.client_post(
            "/json/realm/profile_fields", info=dict(field_type=field_type, field_data=field_data)
        )
        self.assert_json_success(result)

        # Default external account field data cannot be updated
        field = CustomProfileField.objects.get(name="Twitter", realm=realm)
        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={"name": "Twitter username", "field_type": CustomProfileField.EXTERNAL_ACCOUNT},
        )
        self.assert_json_error(result, "Default custom field cannot be updated.")

        result = self.client_delete(f"/json/realm/profile_fields/{field.id}")
        self.assert_json_success(result)

    def test_create_external_account_field(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        data: Dict[str, Union[str, int, Dict[str, str]]] = {}
        data["name"] = "Twitter"
        data["field_type"] = CustomProfileField.EXTERNAL_ACCOUNT

        data["field_data"] = "invalid"
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Bad value for 'field_data': invalid")

        data["field_data"] = orjson.dumps({}).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "subtype key is missing from field_data")

        data["field_data"] = orjson.dumps(
            {
                "subtype": "",
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, 'field_data["subtype"] cannot be blank.')

        data["field_data"] = orjson.dumps(
            {
                "subtype": "123",
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Invalid external account type")

        non_default_external_account = "linkedin"
        data["field_data"] = orjson.dumps(
            {
                "subtype": non_default_external_account,
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Invalid external account type")

        data["field_data"] = orjson.dumps(
            {
                "subtype": "twitter",
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_success(result)

        twitter_field = CustomProfileField.objects.get(name="Twitter", realm=realm)
        self.assertEqual(twitter_field.field_type, CustomProfileField.EXTERNAL_ACCOUNT)
        self.assertEqual(twitter_field.name, "Twitter")
        self.assertEqual(orjson.loads(twitter_field.field_data)["subtype"], "twitter")

        data["name"] = "Reddit"
        data["field_data"] = orjson.dumps(
            {
                "subtype": "custom",
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Custom external account must define URL pattern")

        data["field_data"] = orjson.dumps(
            {
                "subtype": "custom",
                "url_pattern": 123,
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, 'field_data["url_pattern"] is not a string')

        data["field_data"] = orjson.dumps(
            {
                "subtype": "custom",
                "url_pattern": "invalid",
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Malformed URL pattern.")

        data["field_data"] = orjson.dumps(
            {
                "subtype": "custom",
                "url_pattern": "https://www.reddit.com/%(username)s/user/%(username)s",
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "Malformed URL pattern.")

        data["field_data"] = orjson.dumps(
            {
                "subtype": "custom",
                "url_pattern": "reddit.com/%(username)s",
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, 'field_data["url_pattern"] is not a URL')

        data["field_data"] = orjson.dumps(
            {
                "subtype": "custom",
                "url_pattern": "https://www.reddit.com/user/%(username)s",
            }
        ).decode()
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_success(result)

        custom_field = CustomProfileField.objects.get(name="Reddit", realm=realm)
        self.assertEqual(custom_field.field_type, CustomProfileField.EXTERNAL_ACCOUNT)
        self.assertEqual(custom_field.name, "Reddit")
        field_data = orjson.loads(custom_field.field_data)
        self.assertEqual(field_data["subtype"], "custom")
        self.assertEqual(field_data["url_pattern"], "https://www.reddit.com/user/%(username)s")

        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_error(result, "A field with that label already exists.")

    def test_create_field_of_type_user(self) -> None:
        self.login("iago")
        data = {
            "name": "Your mentor",
            "field_type": CustomProfileField.USER,
        }
        result = self.client_post("/json/realm/profile_fields", info=data)
        self.assert_json_success(result)

    def test_not_realm_admin(self) -> None:
        self.login("hamlet")
        result = self.client_post("/json/realm/profile_fields")
        self.assert_json_error(result, "Must be an organization administrator")
        result = self.client_delete("/json/realm/profile_fields/1")
        self.assert_json_error(result, "Must be an organization administrator")


class DeleteCustomProfileFieldTest(CustomProfileFieldTestCase):
    def test_delete(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        field = CustomProfileField.objects.get(name="Phone number", realm=realm)
        result = self.client_delete("/json/realm/profile_fields/100")
        self.assert_json_error(result, "Field id 100 not found.")

        self.assertTrue(self.custom_field_exists_in_realm(field.id))
        result = self.client_delete(f"/json/realm/profile_fields/{field.id}")
        self.assert_json_success(result)
        self.assertFalse(self.custom_field_exists_in_realm(field.id))

    def test_delete_field_value(self) -> None:
        iago = self.example_user("iago")
        self.login_user(iago)
        realm = get_realm("zulip")

        invalid_field_id = 1234
        result = self.client_delete(
            "/json/users/me/profile_data",
            {
                "data": orjson.dumps([invalid_field_id]).decode(),
            },
        )
        self.assert_json_error(result, f"Field id {invalid_field_id} not found.")

        field = CustomProfileField.objects.get(name="Mentor", realm=realm)
        data: List[Dict[str, Union[int, str, List[int]]]] = [
            {"id": field.id, "value": [self.example_user("aaron").id]},
        ]
        do_update_user_custom_profile_data_if_changed(iago, data)

        iago_value = CustomProfileFieldValue.objects.get(user_profile=iago, field=field)
        converter = field.FIELD_CONVERTERS[field.field_type]
        self.assertEqual([self.example_user("aaron").id], converter(iago_value.value))

        result = self.client_delete(
            "/json/users/me/profile_data",
            {
                "data": orjson.dumps([field.id]).decode(),
            },
        )
        self.assert_json_success(result)

        # Don't throw an exception here
        result = self.client_delete(
            "/json/users/me/profile_data",
            {
                "data": orjson.dumps([field.id]).decode(),
            },
        )
        self.assert_json_success(result)

    def test_delete_internals(self) -> None:
        user_profile = self.example_user("iago")
        realm = user_profile.realm
        field = CustomProfileField.objects.get(name="Phone number", realm=realm)
        data: List[Dict[str, Union[int, str, List[int]]]] = [
            {"id": field.id, "value": "123456"},
        ]
        do_update_user_custom_profile_data_if_changed(user_profile, data)

        self.assertTrue(self.custom_field_exists_in_realm(field.id))
        self.assertEqual(user_profile.customprofilefieldvalue_set.count(), self.original_count)

        do_remove_realm_custom_profile_field(realm, field)

        self.assertFalse(self.custom_field_exists_in_realm(field.id))
        self.assertEqual(user_profile.customprofilefieldvalue_set.count(), self.original_count - 1)


class UpdateCustomProfileFieldTest(CustomProfileFieldTestCase):
    def test_update(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        result = self.client_patch(
            "/json/realm/profile_fields/100",
            info={"name": "Phone number", "field_type": CustomProfileField.SHORT_TEXT},
        )
        self.assert_json_error(result, "Field id 100 not found.")

        field = CustomProfileField.objects.get(name="Phone number", realm=realm)
        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={"name": "", "field_type": CustomProfileField.SHORT_TEXT},
        )
        self.assert_json_error(result, "Label cannot be blank.")

        self.assertEqual(CustomProfileField.objects.count(), self.original_count)
        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={"name": "New phone number", "field_type": CustomProfileField.SHORT_TEXT},
        )
        self.assert_json_success(result)
        field = CustomProfileField.objects.get(id=field.id, realm=realm)
        self.assertEqual(CustomProfileField.objects.count(), self.original_count)
        self.assertEqual(field.name, "New phone number")
        self.assertIs(field.hint, "")
        self.assertEqual(field.field_type, CustomProfileField.SHORT_TEXT)

        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={"name": "*" * 41, "field_type": CustomProfileField.SHORT_TEXT},
        )
        msg = "name is too long (limit: 40 characters)"
        self.assert_json_error(result, msg)

        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={
                "name": "New phone number",
                "hint": "*" * 81,
                "field_type": CustomProfileField.SHORT_TEXT,
            },
        )
        msg = "hint is too long (limit: 80 characters)"
        self.assert_json_error(result, msg)

        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={
                "name": "New phone number",
                "hint": "New contact number",
                "field_type": CustomProfileField.SHORT_TEXT,
            },
        )
        self.assert_json_success(result)

        field = CustomProfileField.objects.get(id=field.id, realm=realm)
        self.assertEqual(CustomProfileField.objects.count(), self.original_count)
        self.assertEqual(field.name, "New phone number")
        self.assertEqual(field.hint, "New contact number")
        self.assertEqual(field.field_type, CustomProfileField.SHORT_TEXT)

        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={"name": "Name ", "field_type": CustomProfileField.SHORT_TEXT},
        )
        self.assert_json_success(result)
        field.refresh_from_db()
        self.assertEqual(field.name, "Name")

        field = CustomProfileField.objects.get(name="Favorite editor", realm=realm)
        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={"name": "Favorite editor", "field_data": "invalid"},
        )
        self.assert_json_error(result, "Bad value for 'field_data': invalid")

        field_data = orjson.dumps(
            {
                "vim": "Vim",
                "emacs": {"order": "2", "text": "Emacs"},
            }
        ).decode()
        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={"name": "Favorite editor", "field_data": field_data},
        )
        self.assert_json_error(result, "field_data is not a dict")

        field_data = orjson.dumps(
            {
                "vim": {"order": "1", "text": "Vim"},
                "emacs": {"order": "2", "text": "Emacs"},
                "notepad": {"order": "3", "text": "Notepad"},
            }
        ).decode()
        result = self.client_patch(
            f"/json/realm/profile_fields/{field.id}",
            info={"name": "Favorite editor", "field_data": field_data},
        )
        self.assert_json_success(result)

    def test_update_is_aware_of_uniqueness(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        field_1 = try_add_realm_custom_profile_field(realm, "Phone", CustomProfileField.SHORT_TEXT)

        field_2 = try_add_realm_custom_profile_field(
            realm, "Phone 1", CustomProfileField.SHORT_TEXT
        )

        self.assertTrue(self.custom_field_exists_in_realm(field_1.id))
        self.assertTrue(self.custom_field_exists_in_realm(field_2.id))
        result = self.client_patch(
            f"/json/realm/profile_fields/{field_2.id}",
            info={"name": "Phone", "field_type": CustomProfileField.SHORT_TEXT},
        )
        self.assert_json_error(result, "A field with that label already exists.")

    def assert_error_update_invalid_value(
        self, field_name: str, new_value: object, error_msg: str
    ) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        field = CustomProfileField.objects.get(name=field_name, realm=realm)

        # Update value of field
        result = self.client_patch(
            "/json/users/me/profile_data",
            {"data": orjson.dumps([{"id": field.id, "value": new_value}]).decode()},
        )
        self.assert_json_error(result, error_msg)

    def test_update_invalid_field(self) -> None:
        self.login("iago")
        data = [{"id": 1234, "value": "12"}]
        result = self.client_patch(
            "/json/users/me/profile_data",
            {
                "data": orjson.dumps(data).decode(),
            },
        )
        self.assert_json_error(result, "Field id 1234 not found.")

    def test_update_invalid_short_text(self) -> None:
        field_name = "Phone number"
        self.assert_error_update_invalid_value(
            field_name, "t" * 201, f"{field_name} is too long (limit: 50 characters)"
        )

    def test_update_invalid_date(self) -> None:
        field_name = "Birthday"
        self.assert_error_update_invalid_value(field_name, "a-b-c", f"{field_name} is not a date")
        self.assert_error_update_invalid_value(
            field_name, "1909-3-5", f"{field_name} is not a date"
        )
        self.assert_error_update_invalid_value(field_name, 123, f"{field_name} is not a string")

    def test_update_invalid_url(self) -> None:
        field_name = "Favorite website"
        self.assert_error_update_invalid_value(field_name, "not URL", f"{field_name} is not a URL")

    def test_update_invalid_user_field(self) -> None:
        field_name = "Mentor"
        invalid_user_id = 1000
        self.assert_error_update_invalid_value(
            field_name, [invalid_user_id], f"Invalid user ID: {invalid_user_id}"
        )

    def test_update_profile_data_successfully(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        fields = [
            ("Phone number", "*short* text data"),
            ("Biography", "~~short~~ **long** text data"),
            ("Favorite food", "long short text data"),
            ("Favorite editor", "vim"),
            ("Birthday", "1909-03-05"),
            ("Favorite website", "https://zulip.com"),
            ("Mentor", [self.example_user("cordelia").id]),
            ("GitHub", "zulip-mobile"),
        ]

        data = []
        for i, field_value in enumerate(fields):
            name, value = field_value
            field = CustomProfileField.objects.get(name=name, realm=realm)
            data.append(
                {
                    "id": field.id,
                    "value": value,
                    "field": field,
                }
            )

        # Update value of field
        result = self.client_patch(
            "/json/users/me/profile_data",
            {"data": orjson.dumps([{"id": f["id"], "value": f["value"]} for f in data]).decode()},
        )
        self.assert_json_success(result)

        iago = self.example_user("iago")
        expected_value = {f["id"]: f["value"] for f in data}
        expected_rendered_value: Dict[Union[int, float, str, None], Union[str, None]] = {}
        for f in data:
            if f["field"].is_renderable():
                expected_rendered_value[f["id"]] = markdown_convert(f["value"])
            else:
                expected_rendered_value[f["id"]] = None

        for field_dict in iago.profile_data:
            self.assertEqual(field_dict["value"], expected_value[field_dict["id"]])
            self.assertEqual(
                field_dict["rendered_value"], expected_rendered_value[field_dict["id"]]
            )
            for k in ["id", "type", "name", "field_data"]:
                self.assertIn(k, field_dict)

        # Update value of one field.
        field = CustomProfileField.objects.get(name="Biography", realm=realm)
        data = [
            {
                "id": field.id,
                "value": "foobar",
            }
        ]

        result = self.client_patch(
            "/json/users/me/profile_data", {"data": orjson.dumps(data).decode()}
        )
        self.assert_json_success(result)
        for field_dict in iago.profile_data:
            if field_dict["id"] == field.id:
                self.assertEqual(field_dict["value"], "foobar")

    def test_update_invalid_select_field(self) -> None:
        field_name = "Favorite editor"
        self.assert_error_update_invalid_value(
            field_name, "foobar", f"'foobar' is not a valid choice for '{field_name}'."
        )

    def test_update_select_field_successfully(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        field = CustomProfileField.objects.get(name="Favorite editor", realm=realm)
        data = [
            {
                "id": field.id,
                "value": "emacs",
            }
        ]

        result = self.client_patch(
            "/json/users/me/profile_data", {"data": orjson.dumps(data).decode()}
        )
        self.assert_json_success(result)

    def test_null_value_and_rendered_value(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")

        quote = try_add_realm_custom_profile_field(
            realm=realm,
            name="Quote",
            hint="Saying or phrase which you known for.",
            field_type=CustomProfileField.SHORT_TEXT,
        )

        iago = self.example_user("iago")
        iago_profile_quote = iago.profile_data[-1]
        value = iago_profile_quote["value"]
        rendered_value = iago_profile_quote["rendered_value"]
        self.assertIsNone(value)
        self.assertIsNone(rendered_value)

        update_dict: Dict[str, Union[int, str, List[int]]] = {
            "id": quote.id,
            "value": "***beware*** of jealousy...",
        }
        do_update_user_custom_profile_data_if_changed(iago, [update_dict])

        iago_profile_quote = self.example_user("iago").profile_data[-1]
        value = iago_profile_quote["value"]
        rendered_value = iago_profile_quote["rendered_value"]
        self.assertIsNotNone(value)
        self.assertIsNotNone(rendered_value)
        self.assertEqual("<p><strong><em>beware</em></strong> of jealousy...</p>", rendered_value)

    def test_do_update_value_not_changed(self) -> None:
        iago = self.example_user("iago")
        self.login_user(iago)
        realm = get_realm("zulip")

        # Set field value:
        field = CustomProfileField.objects.get(name="Mentor", realm=realm)
        data: List[Dict[str, Union[int, str, List[int]]]] = [
            {"id": field.id, "value": [self.example_user("aaron").id]},
        ]
        do_update_user_custom_profile_data_if_changed(iago, data)

        with mock.patch("zerver.lib.actions.notify_user_update_custom_profile_data") as mock_notify:
            # Attempting to "update" the field value, when it wouldn't actually change,
            # if always_notify is disabled, shouldn't trigger notify.
            do_update_user_custom_profile_data_if_changed(iago, data)
            mock_notify.assert_not_called()


class ListCustomProfileFieldTest(CustomProfileFieldTestCase):
    def test_list(self) -> None:
        self.login("iago")
        result = self.client_get("/json/realm/profile_fields")
        self.assert_json_success(result)
        self.assertEqual(200, result.status_code)
        content = result.json()
        self.assert_length(content["custom_fields"], self.original_count)

    def test_list_order(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        order = (
            CustomProfileField.objects.filter(realm=realm)
            .order_by("-order")
            .values_list("order", flat=True)
        )
        try_reorder_realm_custom_profile_fields(realm, order)
        result = self.client_get("/json/realm/profile_fields")
        content = result.json()
        self.assertListEqual(
            content["custom_fields"], sorted(content["custom_fields"], key=lambda x: -x["id"])
        )

    def test_get_custom_profile_fields_from_api(self) -> None:
        iago = self.example_user("iago")
        test_bot = self.create_test_bot("foo-bot", iago)
        self.login_user(iago)
        assert test_bot

        with queries_captured() as queries:
            response = self.client_get(
                "/json/users", {"client_gravatar": "false", "include_custom_profile_fields": "true"}
            )

        self.assert_length(queries, 4)

        self.assertEqual(response.status_code, 200)
        raw_users_data = response.json()["members"]

        iago_raw_data = None
        test_bot_raw_data = None

        for user_dict in raw_users_data:
            if user_dict["user_id"] == iago.id:
                iago_raw_data = user_dict
                continue
            if user_dict["user_id"] == test_bot.id:
                test_bot_raw_data = user_dict
                continue

        if (not iago_raw_data) or (not test_bot_raw_data):
            raise AssertionError("Could not find required data from the response.")

        expected_keys_for_iago = {
            "delivery_email",
            "email",
            "user_id",
            "avatar_url",
            "avatar_version",
            "is_admin",
            "is_guest",
            "is_bot",
            "is_owner",
            "role",
            "full_name",
            "timezone",
            "is_active",
            "date_joined",
            "profile_data",
        }
        self.assertEqual(set(iago_raw_data.keys()), expected_keys_for_iago)
        self.assertNotEqual(iago_raw_data["profile_data"], {})

        expected_keys_for_test_bot = {
            "delivery_email",
            "email",
            "user_id",
            "avatar_url",
            "avatar_version",
            "is_admin",
            "is_guest",
            "is_bot",
            "is_owner",
            "role",
            "full_name",
            "timezone",
            "is_active",
            "date_joined",
            "bot_type",
            "bot_owner_id",
        }
        self.assertEqual(set(test_bot_raw_data.keys()), expected_keys_for_test_bot)
        self.assertEqual(test_bot_raw_data["bot_type"], 1)
        self.assertEqual(test_bot_raw_data["bot_owner_id"], iago_raw_data["user_id"])

        response = self.client_get("/json/users", {"client_gravatar": "false"})
        self.assertEqual(response.status_code, 200)
        raw_users_data = response.json()["members"]
        for user_dict in raw_users_data:
            with self.assertRaises(KeyError):
                user_dict["profile_data"]

    def test_get_custom_profile_fields_from_api_for_single_user(self) -> None:
        self.login("iago")
        expected_keys = {
            "result",
            "msg",
            "max_message_id",
            "user_id",
            "avatar_url",
            "full_name",
            "email",
            "is_bot",
            "is_admin",
            "is_owner",
            "role",
            "profile_data",
            "avatar_version",
            "timezone",
            "delivery_email",
            "is_active",
            "is_guest",
            "date_joined",
        }

        url = "/json/users/me"
        response = self.client_get(url)
        self.assertEqual(response.status_code, 200)
        raw_user_data = response.json()
        self.assertEqual(set(raw_user_data.keys()), expected_keys)


class ReorderCustomProfileFieldTest(CustomProfileFieldTestCase):
    def test_reorder(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        order = list(
            CustomProfileField.objects.filter(realm=realm)
            .order_by("-order")
            .values_list("order", flat=True)
        )
        result = self.client_patch(
            "/json/realm/profile_fields", info={"order": orjson.dumps(order).decode()}
        )
        self.assert_json_success(result)
        fields = CustomProfileField.objects.filter(realm=realm).order_by("order")
        for field in fields:
            self.assertEqual(field.id, order[field.order])

    def test_reorder_duplicates(self) -> None:
        self.login("iago")
        realm = get_realm("zulip")
        order = list(
            CustomProfileField.objects.filter(realm=realm)
            .order_by("-order")
            .values_list("order", flat=True)
        )
        order.append(4)
        result = self.client_patch(
            "/json/realm/profile_fields", info={"order": orjson.dumps(order).decode()}
        )
        self.assert_json_success(result)
        fields = CustomProfileField.objects.filter(realm=realm).order_by("order")
        for field in fields:
            self.assertEqual(field.id, order[field.order])

    def test_reorder_unauthorized(self) -> None:
        self.login("hamlet")
        realm = get_realm("zulip")
        order = list(
            CustomProfileField.objects.filter(realm=realm)
            .order_by("-order")
            .values_list("order", flat=True)
        )
        result = self.client_patch(
            "/json/realm/profile_fields", info={"order": orjson.dumps(order).decode()}
        )
        self.assert_json_error(result, "Must be an organization administrator")

    def test_reorder_invalid(self) -> None:
        self.login("iago")
        order = [100, 200, 300]
        result = self.client_patch(
            "/json/realm/profile_fields", info={"order": orjson.dumps(order).decode()}
        )
        self.assert_json_error(result, "Invalid order mapping.")
        order = [1, 2]
        result = self.client_patch(
            "/json/realm/profile_fields", info={"order": orjson.dumps(order).decode()}
        )
        self.assert_json_error(result, "Invalid order mapping.")