"""Schemas for change_history response payloads."""

from marshmallow import fields, Schema, validate

DELETION_STATUS = ('Y', 'N')


class ChangeHistory(Schema):
    """Schema representing the result of an individual history item."""

    field_name = fields.String(required=True)
    old_sale_start_date = fields.Date(required=False)
    new_sale_start_date = fields.Date(required=False)
    new_price = fields.String(required=False)
    old_price = fields.String(required=False)
    new_embargo_date = fields.Date(required=False)
    old_embargo_date = fields.Date(required=False)
    old_deletion_status = fields.String(
        required=False, validate=validate.OneOf(DELETION_STATUS))
    new_deletion_status = fields.String(
        required=False, validate=validate.OneOf(DELETION_STATUS))


class GetChangeHistoryResponse(Schema):
    """Schema for result of a GET product/<int:product_id>/change_history."""

    items = fields.List(
        fields.Nested(ChangeHistory, required=True),
        required=True)