import typing

from rest_framework import serializers

from apps.mobile_app.models import MobileAppUserSettings
from common.api_helpers.custom_fields import TimeZoneField


class MobileAppUserSettingsSerializer(serializers.ModelSerializer):
    time_zone = TimeZoneField(required=False, allow_null=False)
    going_oncall_notification_timing = serializers.ListField(required=False, allow_null=False)

    class Meta:
        model = MobileAppUserSettings
        fields = (
            "info_notification_sound_name",
            "info_notification_volume_type",
            "info_notification_volume",
            "info_notification_volume_override",
            "default_notification_sound_name",
            "default_notification_volume_type",
            "default_notification_volume",
            "default_notification_volume_override",
            "important_notification_sound_name",
            "important_notification_volume_type",
            "important_notification_volume",
            "important_notification_volume_override",
            "important_notification_override_dnd",
            "info_notifications_enabled",
            "going_oncall_notification_timing",
            "locale",
            "time_zone",
        )

    def validate_going_oncall_notification_timing(
        self, going_oncall_notification_timing: typing.Optional[typing.List[int]]
    ) -> typing.Optional[typing.List[int]]:
        if going_oncall_notification_timing is not None:
            if len(going_oncall_notification_timing) == 0:
                raise serializers.ValidationError(detail="invalid timing options")
            notification_timing_options = [opt[0] for opt in MobileAppUserSettings.NOTIFICATION_TIMING_CHOICES]
            for option in going_oncall_notification_timing:
                if option not in notification_timing_options:
                    raise serializers.ValidationError(detail="invalid timing options")
        return going_oncall_notification_timing