# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# 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
# "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.
# pylint: disable=consider-using-transaction
import logging

from flask import request, Response
from flask_appbuilder import expose
from flask_appbuilder.security.decorators import has_access, has_access_api
from flask_babel import gettext as __
from sqlalchemy import and_

from superset import db
from superset.models.sql_lab import Query, TableSchema, TabState
from superset.superset_typing import FlaskResponse
from superset.utils import json
from superset.utils.core import error_msg_from_exception, get_user_id
from superset.views.base import (
    BaseSupersetView,
    json_error_response,
    json_success,
)

logger = logging.getLogger(__name__)


class SavedQueryView(BaseSupersetView):
    route_base = "/savedqueryview"
    class_permission_name = "SavedQuery"

    @expose("/list/")
    @has_access
    def list(self) -> FlaskResponse:
        return super().render_app_template()


def _get_owner_id(tab_state_id: int) -> int:
    return db.session.query(TabState.user_id).filter_by(id=tab_state_id).scalar()


class TabStateView(BaseSupersetView):
    @has_access_api
    @expose("/", methods=("POST",))
    def post(self) -> FlaskResponse:
        try:
            query_editor = json.loads(request.form["queryEditor"])
            tab_state = TabState(
                user_id=get_user_id(),
                # This is for backward compatibility
                label=query_editor.get("name")
                or query_editor.get("title", __("Untitled Query")),
                active=True,
                database_id=query_editor["dbId"],
                catalog=query_editor.get("catalog"),
                schema=query_editor.get("schema"),
                sql=query_editor.get("sql", "SELECT ..."),
                query_limit=query_editor.get("queryLimit"),
                hide_left_bar=query_editor.get("hideLeftBar"),
                saved_query_id=query_editor.get("remoteId"),
                template_params=query_editor.get("templateParams"),
            )
            (
                db.session.query(TabState)
                .filter_by(user_id=get_user_id())
                .update({"active": False})
            )
            db.session.add(tab_state)
            db.session.commit()
            return json_success(json.dumps({"id": tab_state.id}))
        except Exception as ex:  # pylint: disable=broad-except
            db.session.rollback()
            return json_error_response(error_msg_from_exception(ex), 400)

    @has_access_api
    @expose("/<int:tab_state_id>", methods=("DELETE",))
    def delete(self, tab_state_id: int) -> FlaskResponse:
        try:
            owner_id = _get_owner_id(tab_state_id)
            if owner_id is None:
                return Response(status=404)
            if owner_id != get_user_id():
                return Response(status=403)

            db.session.query(TabState).filter(TabState.id == tab_state_id).delete(
                synchronize_session=False
            )
            db.session.query(TableSchema).filter(
                TableSchema.tab_state_id == tab_state_id
            ).delete(synchronize_session=False)
            db.session.commit()
            return json_success(json.dumps("OK"))
        except Exception as ex:  # pylint: disable=broad-except
            db.session.rollback()
            return json_error_response(error_msg_from_exception(ex), 400)

    @has_access_api
    @expose("/<int:tab_state_id>", methods=("GET",))
    def get(self, tab_state_id: int) -> FlaskResponse:
        owner_id = _get_owner_id(tab_state_id)
        if owner_id is None:
            return Response(status=404)
        if owner_id != get_user_id():
            return Response(status=403)

        tab_state = db.session.query(TabState).filter_by(id=tab_state_id).first()
        if tab_state is None:
            return Response(status=404)
        return json_success(
            json.dumps(tab_state.to_dict(), default=json.json_iso_dttm_ser)
        )

    @has_access_api
    @expose("<int:tab_state_id>/activate", methods=("POST",))
    def activate(self, tab_state_id: int) -> FlaskResponse:
        try:
            owner_id = _get_owner_id(tab_state_id)
            if owner_id is None:
                return Response(status=404)
            if owner_id != get_user_id():
                return Response(status=403)

            (
                db.session.query(TabState)
                .filter_by(user_id=get_user_id())
                .update({"active": TabState.id == tab_state_id})
            )
            db.session.commit()
            return json_success(json.dumps(tab_state_id))
        except Exception as ex:  # pylint: disable=broad-except
            db.session.rollback()
            return json_error_response(error_msg_from_exception(ex), 400)

    @has_access_api
    @expose("<int:tab_state_id>", methods=("PUT",))
    def put(self, tab_state_id: int) -> FlaskResponse:
        owner_id = _get_owner_id(tab_state_id)
        if owner_id is None:
            return Response(status=404)
        if owner_id != get_user_id():
            return Response(status=403)

        try:
            fields = {k: json.loads(v) for k, v in request.form.to_dict().items()}
            db.session.query(TabState).filter_by(id=tab_state_id).update(fields)
            db.session.commit()
            return json_success(json.dumps(tab_state_id))
        except Exception as ex:  # pylint: disable=broad-except
            db.session.rollback()
            return json_error_response(error_msg_from_exception(ex), 400)

    @has_access_api
    @expose("<int:tab_state_id>/migrate_query", methods=("POST",))
    def migrate_query(self, tab_state_id: int) -> FlaskResponse:
        try:
            owner_id = _get_owner_id(tab_state_id)
            if owner_id is None:
                return Response(status=404)
            if owner_id != get_user_id():
                return Response(status=403)

            client_id = json.loads(request.form["queryId"])
            db.session.query(Query).filter_by(client_id=client_id).update(
                {"sql_editor_id": tab_state_id}
            )
            db.session.commit()
            return json_success(json.dumps(tab_state_id))
        except Exception as ex:  # pylint: disable=broad-except
            db.session.rollback()
            return json_error_response(error_msg_from_exception(ex), 400)

    @has_access_api
    @expose("<int:tab_state_id>/query/<client_id>", methods=("DELETE",))
    def delete_query(self, tab_state_id: int, client_id: str) -> FlaskResponse:
        try:
            # Before deleting the query, ensure it's not tied to any
            # active tab as the last query. If so, replace the query
            # with the latest one created in that tab
            tab_state_query = db.session.query(TabState).filter_by(
                id=tab_state_id, latest_query_id=client_id
            )
            if tab_state_query.count():
                query = (
                    db.session.query(Query)
                    .filter(
                        and_(
                            Query.client_id != client_id,
                            Query.user_id == get_user_id(),
                            Query.sql_editor_id == str(tab_state_id),
                        ),
                    )
                    .order_by(Query.id.desc())
                    .first()
                )
                tab_state_query.update(
                    {"latest_query_id": query.client_id if query else None}
                )

            db.session.query(Query).filter_by(
                client_id=client_id,
                user_id=get_user_id(),
                sql_editor_id=str(tab_state_id),
            ).delete(synchronize_session=False)
            db.session.commit()
            return json_success(json.dumps("OK"))
        except Exception as ex:  # pylint: disable=broad-except
            db.session.rollback()
            return json_error_response(error_msg_from_exception(ex), 400)


class TableSchemaView(BaseSupersetView):
    @has_access_api
    @expose("/", methods=("POST",))
    def post(self) -> FlaskResponse:
        try:
            table = json.loads(request.form["table"])

            # delete any existing table schema
            db.session.query(TableSchema).filter(
                TableSchema.tab_state_id == table["queryEditorId"],
                TableSchema.database_id == table["dbId"],
                TableSchema.catalog == table.get("catalog"),
                TableSchema.schema == table["schema"],
                TableSchema.table == table["name"],
            ).delete(synchronize_session=False)

            table_schema = TableSchema(
                tab_state_id=table["queryEditorId"],
                database_id=table["dbId"],
                catalog=table.get("catalog"),
                schema=table["schema"],
                table=table["name"],
                description=json.dumps(table),
                expanded=True,
            )
            db.session.add(table_schema)
            db.session.commit()
            return json_success(json.dumps({"id": table_schema.id}))
        except Exception as ex:  # pylint: disable=broad-except
            db.session.rollback()
            return json_error_response(error_msg_from_exception(ex), 400)

    @has_access_api
    @expose("/<int:table_schema_id>", methods=("DELETE",))
    def delete(self, table_schema_id: int) -> FlaskResponse:
        try:
            db.session.query(TableSchema).filter(
                TableSchema.id == table_schema_id
            ).delete(synchronize_session=False)
            db.session.commit()
            return json_success(json.dumps("OK"))
        except Exception as ex:  # pylint: disable=broad-except
            db.session.rollback()
            return json_error_response(error_msg_from_exception(ex), 400)

    @has_access_api
    @expose("/<int:table_schema_id>/expanded", methods=("POST",))
    def expanded(self, table_schema_id: int) -> FlaskResponse:
        payload = json.loads(request.form["expanded"])
        (
            db.session.query(TableSchema)
            .filter_by(id=table_schema_id)
            .update({"expanded": payload})
        )
        response = json.dumps({"id": table_schema_id, "expanded": payload})
        return json_success(response)