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# distributed with this work for additional information
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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_appbuilder.models.sqla.interface import SQLAInterface
from flask_babel import lazy_gettext as _
from wtforms.validators import StopValidation

from superset.models.annotations import Annotation, AnnotationLayer

from .base import DeleteMixin, SupersetModelView


class StartEndDttmValidator:  # pylint: disable=too-few-public-methods
    """
    Validates dttm fields.
    """

    def __call__(self, form, field):
        if not form["start_dttm"].data and not form["end_dttm"].data:
            raise StopValidation(_("annotation start time or end time is required."))
        elif (
            form["end_dttm"].data
            and form["start_dttm"].data
            and form["end_dttm"].data < form["start_dttm"].data
        ):
            raise StopValidation(
                _("Annotation end time must be no earlier than start time.")
            )


class AnnotationModelView(
    SupersetModelView, DeleteMixin
):  # pylint: disable=too-many-ancestors
    datamodel = SQLAInterface(Annotation)

    list_title = _("List Annotation")
    show_title = _("Show Annotation")
    add_title = _("Add Annotation")
    edit_title = _("Edit Annotation")

    list_columns = ["layer", "short_descr", "start_dttm", "end_dttm"]
    edit_columns = [
        "layer",
        "short_descr",
        "long_descr",
        "start_dttm",
        "end_dttm",
        "json_metadata",
    ]

    add_columns = edit_columns

    label_columns = {
        "layer": _("Layer"),
        "short_descr": _("Short Descr"),
        "start_dttm": _("Start Dttm"),
        "end_dttm": _("End Dttm"),
        "long_descr": _("Long Descr"),
        "json_metadata": _("JSON Metadata"),
    }

    description_columns = {
        "json_metadata": "This JSON represents any additional metadata this \
         annotation needs to add more context."
    }

    validators_columns = {"start_dttm": [StartEndDttmValidator()]}

    def pre_add(self, item):
        if not item.start_dttm:
            item.start_dttm = item.end_dttm
        elif not item.end_dttm:
            item.end_dttm = item.start_dttm

    def pre_update(self, item):
        self.pre_add(item)


class AnnotationLayerModelView(
    SupersetModelView, DeleteMixin
):  # pylint: disable=too-many-ancestors
    datamodel = SQLAInterface(AnnotationLayer)

    list_title = _("List Annotation Layer")
    show_title = _("Show Annotation Layer")
    add_title = _("Add Annotation Layer")
    edit_title = _("Edit Annotation Layer")

    list_columns = ["id", "name"]
    edit_columns = ["name", "descr"]
    add_columns = edit_columns

    label_columns = {"name": _("Name"), "descr": _("Description")}