38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
import csv
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import datetime
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import pathlib
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from abc import ABC, abstractmethod
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from xexe.exchange_rates import ExchangeRates
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class RateWriter(ABC):
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@abstractmethod
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def write_rates(self, rates: ExchangeRates) -> None:
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pass
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class CSVRateWriter(RateWriter):
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def __init__(self, output_file_path: pathlib.Path) -> None:
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super().__init__()
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self.output_file_path = output_file_path
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def write_rates(self, rates: ExchangeRates) -> None:
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with open(self.output_file_path, mode="w") as csv_file:
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csv_writer = csv.writer(csv_file)
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csv_writer.writerow(
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["from_currency", "to_currency", "rate", "rate_date", "exported_at"]
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)
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exported_at = datetime.datetime.now()
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for rate in rates._rate_index.values():
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csv_writer.writerow(
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[
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rate.from_currency.value,
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rate.to_currency.value,
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rate.rate.amount,
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rate.rate_date.strftime("%Y-%m-%d"),
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exported_at.isoformat(timespec="seconds"),
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]
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)
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