private static string GetFilePath(YearAndMonth yearAndMonth)
{
var dataFolder = AppSettings.DataFolder;
return(Path.Combine(dataFolder,
$"{SubscribersPrefix}_{yearAndMonth.Year}_{yearAndMonth.Month.Number:00}{SubscribersExtension}"));
}
public static IEnumerable <Subscriber> GetAll(YearAndMonth yearAndMonth)
{
var file = GetFilePath(yearAndMonth);
if (!File.Exists(file))
{
return(Enumerable.Empty <Subscriber>());
}
using var reader = new StreamReader(file, Encoding.UTF8);
using var csvReader = new CsvReader(reader, GetCsvConfiguration());
return(csvReader.GetRecords <Subscriber>().ToArray());
}
public static Exceptional <Unit> Save(IEnumerable <Subscriber> subscribers, YearAndMonth yearAndMonth)
{
if (AppSettings.IsReadonly)
{
return(Unit());
}
try
{
var file = GetFilePath(yearAndMonth);
using var writer = new StreamWriter(file);
using var csvWriter = new CsvWriter(writer, GetCsvConfiguration());
csvWriter.WriteHeader <Subscriber>();
csvWriter.NextRecord();
csvWriter.WriteRecords(subscribers);
csvWriter.Flush();
}
catch (Exception ex)
{
return(ex);
}
return(Unit());
}