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# to you 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
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# KIND, either express or implied.  See the License for the
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from flask import redirect
from flask_appbuilder import permission_name
from flask_appbuilder.api import expose
from flask_appbuilder.security.decorators import has_access

from superset import event_logger
from superset.superset_typing import FlaskResponse
from superset.views.utils import get_explore_redirect_url

from .base import BaseSupersetView


class ExploreView(BaseSupersetView):
    route_base = "/explore"
    class_permission_name = "Explore"

    @expose("/")
    @has_access
    @permission_name("read")
    @event_logger.log_this
    def root(self) -> FlaskResponse:
        # After `Superset.route_base = ""`, both `Superset.explore` and this
        # view register at `/explore/`; this view wins. Preserve the legacy
        # form_data → form_data_key cache-and-redirect contract via the
        # shared `get_explore_redirect_url` helper (lives in `views/utils.py`
        # so both callers share the same guards: malformed datasource,
        # non-numeric slice_id, cache-write failure, loop guard). The
        # helper returns ``None`` for any case that would otherwise loop;
        # we render the SPA in that branch.
        if redirect_url := get_explore_redirect_url():
            return redirect(redirect_url)
        return super().render_app_template()


class ExplorePermalinkView(BaseSupersetView):
    # Mirror `Superset.route_base = ""` (see `views/core.py`): Flask-AppBuilder
    # auto-derives `/explorepermalink` from the class name, but the rule pattern
    # already encodes the full path. Leaving the auto-derived value collides
    # with `AppRootMiddleware` under subdirectory deployments and doubles the
    # prefix emitted by `url_for("ExplorePermalinkView.permalink")`.
    route_base = ""
    class_permission_name = "Explore"

    @expose("/explore/p/<key>/")
    @has_access
    @permission_name("read")
    @event_logger.log_this
    # pylint: disable=unused-argument
    def permalink(self, key: str) -> FlaskResponse:
        return super().render_app_template()