public void ExtractEnergyPurchased()
{
FileStream documentContents = File.OpenRead("Data/billEnergyPurchased.pdf");
var billDocument = new BillDocument {
AccountId = ACCOUNT_ID, PublishingDate = new LocalDate(2017, 10, 18)
};
int actual = BillDocumentServiceImpl.ExtractEnergyPurchasedOrSold(billDocument, documentContents);
actual.Should().Be(535);
}
public async Task <int> fetchEnergyPurchasedOrSoldKWh(LocalDate billingIntervalEndDate)
{
LOGGER.Info("Fetching index of bill PDFs");
IHtmlDocument billDocumentIndex = await client.billDocuments.fetchBillDocumentIndex();
IEnumerable <BillDocument> billDocuments = findBillDocuments(billDocumentIndex);
BillDocument billDocument = findBillDocumentForBillingInterval(billDocuments, billingIntervalEndDate);
LOGGER.Info("Downloading bill PDF from {0}", billDocument.publishingDate);
using Stream documentContents = await client.billDocuments.fetchBillDocument(billDocument);
return(extractEnergyPurchasedOrSold(billDocument, documentContents));
}
internal static int extractEnergyPurchasedOrSold(BillDocument billDocument, Stream documentContents)
{
using var pdfReader = new PdfReader(documentContents);
string pageText = PdfTextExtractor.GetTextFromPage(pdfReader, 1, new SimpleTextExtractionStrategy());
Match match = USAGE_PATTERN.Match(pageText);
if (!match.Success)
{
throw new OrangeRocklandException(
$"Could not parse Total Usage KWH from bill published on {billDocument.publishingDate:d}");
}
return(int.Parse(match.Groups[1].Value));
}
