public async Task InitializeDatabase(CancellationToken cancellationToken = default)
{
await using var xml = await LoadData(_config.HistoricalDataUri);
var xmlData = EnvelopeParser.Parse(xml);
var total = xmlData.Data.Value.Count * 32;
var data = ExchangeRatesConverter.Convert(xmlData);
await InsertData(total, data, cancellationToken);
}
public async Task LoadFreshData(CancellationToken cancellationToken = default)
{
var xmlLoadingTask = LoadData(_config.FreshDataUri);
var lastDateLoadingTask = _dbContext.Rates
.OrderByDescending(x => x.Date)
.Select(x => x.Date)
.FirstAsync(cancellationToken);
var xml = await xmlLoadingTask;
var xmlData = EnvelopeParser.Parse(xml);
const int numberOfCurrencies = 32;
var total = xmlData.Data.Value.Count * numberOfCurrencies;
var data = ExchangeRatesConverter.Convert(xmlData);
var lastDate = await lastDateLoadingTask;
await InsertData(total, data.TakeWhile(x => x.Date > lastDate), cancellationToken);
}