from django.core.exceptions import ValidationError
from django.http import HttpRequest, HttpResponse
from django.utils.translation import gettext as _

from zerver.decorator import require_realm_admin
from zerver.lib.actions import do_add_linkifier, do_remove_linkifier, do_update_linkifier
from zerver.lib.exceptions import JsonableError, ValidationFailureError
from zerver.lib.request import REQ, has_request_variables
from zerver.lib.response import json_success
from zerver.models import RealmFilter, UserProfile, linkifiers_for_realm


# Custom realm linkifiers
def list_linkifiers(request: HttpRequest, user_profile: UserProfile) -> HttpResponse:
    linkifiers = linkifiers_for_realm(user_profile.realm_id)
    return json_success({"linkifiers": linkifiers})


@require_realm_admin
@has_request_variables
def create_linkifier(
    request: HttpRequest,
    user_profile: UserProfile,
    pattern: str = REQ(),
    url_format_string: str = REQ(),
) -> HttpResponse:
    try:
        linkifier_id = do_add_linkifier(
            realm=user_profile.realm,
            pattern=pattern,
            url_format_string=url_format_string,
        )
        return json_success({"id": linkifier_id})
    except ValidationError as e:
        raise ValidationFailureError(e)


@require_realm_admin
def delete_linkifier(
    request: HttpRequest, user_profile: UserProfile, filter_id: int
) -> HttpResponse:
    try:
        do_remove_linkifier(realm=user_profile.realm, id=filter_id)
    except RealmFilter.DoesNotExist:
        raise JsonableError(_("Linkifier not found."))
    return json_success()


@require_realm_admin
@has_request_variables
def update_linkifier(
    request: HttpRequest,
    user_profile: UserProfile,
    filter_id: int,
    pattern: str = REQ(),
    url_format_string: str = REQ(),
) -> HttpResponse:
    try:
        do_update_linkifier(
            realm=user_profile.realm,
            id=filter_id,
            pattern=pattern,
            url_format_string=url_format_string,
        )
        return json_success()
    except RealmFilter.DoesNotExist:
        raise JsonableError(_("Linkifier not found."))
    except ValidationError as e:
        raise ValidationFailureError(e)