public async Task <LocalAuthority> GetLocalAuthorityAsync(int laCode, DateTime date, CancellationToken cancellationToken)
{
var dateOfPreviousVersion = _localAuthorityIndex.GetDateOfMostRecentVersionBefore(laCode, date, cancellationToken);
if (!dateOfPreviousVersion.HasValue)
{
return(null);
}
var fileName = $"localauthority-{laCode}-{dateOfPreviousVersion.Value:yyyyMMdd}.json";
var path = Path.Combine(_dataDirectory, fileName);
var json = await FileHelper.ReadFileAsStringAsync(path);
return(JsonConvert.DeserializeObject <LocalAuthority>(json));
}
public async Task <Group> GetGroupAsync(long uid, DateTime date, CancellationToken cancellationToken)
{
var dateOfPreviousVersion = _groupIndex.GetDateOfMostRecentVersionBefore(uid, date, cancellationToken);
if (!dateOfPreviousVersion.HasValue)
{
return(null);
}
var fileName = $"group-{uid}-{dateOfPreviousVersion.Value:yyyyMMdd}.json";
var path = Path.Combine(_dataDirectory, fileName);
var json = await FileHelper.ReadFileAsStringAsync(path);
return(JsonConvert.DeserializeObject <Group>(json));
}