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import json
from ..base import ShopifyResource
class Refund(ShopifyResource):
_prefix_source = "/orders/$order_id/"
@classmethod
def calculate(cls, order_id, shipping=None, refund_line_items=None):
"""
Calculates refund transactions based on line items and shipping.
When you want to create a refund, you should first use the calculate
endpoint to generate accurate refund transactions.
Args:
order_id: Order ID for which the Refund has to created.
shipping: Specify how much shipping to refund.
refund_line_items: A list of line item IDs and quantities to refund.
Returns:
Unsaved refund record
"""
data = {}
if shipping:
data["shipping"] = shipping
data["refund_line_items"] = refund_line_items or []
body = {"refund": data}
resource = cls.post("calculate", order_id=order_id, body=json.dumps(body).encode())
return cls(cls.format.decode(resource.body), prefix_options={"order_id": order_id})
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