/// <inheritdoc/>
protected override void Make(AppCommandRequest commandRequest)
{
(string format, string fileName) = CommandHandleBase.SplitParam(commandRequest.Parameters);
if (File.Exists(fileName))
{
Console.Write($"File is exist - rewrite {fileName}? [Y/n] ");
char output = char.ToUpper(Console.ReadLine()[0]);
if (output != 'Y')
{
return;
}
}
FileCabinetServiceSnapshot snapshot = this.Service.MakeSnapshot();
try
{
using (StreamWriter writer = new (fileName))
{
switch (format)
{
case "csv":
snapshot.SaveToCSV(new FileCabinetRecordCsvWriter(writer));
break;
case "xml":
{
using FileCabinetRecordXmlWriter fileCabinetRecordXmlWriter = new (writer);
snapshot.SaveToXML(fileCabinetRecordXmlWriter);
break;
}
default:
Console.WriteLine("Format is not supported.");
break;
}
}
Console.WriteLine($"All records are exported to file {fileName}.");
}
catch (IOException)
{
Console.WriteLine($"Export failed: can't open file {fileName}.");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
private void Export(string parameters)
{
if (parameters == null)
{
throw new ArgumentNullException(nameof(parameters));
}
string[] commands = parameters.Split(' ');
if (commands.Length != 2)
{
throw new ArgumentException("Wrong command format. Example: export csv d:/records.csv", nameof(parameters));
}
string format = commands[FormatPosition];
string path = commands[PathPosition];
const string yesAnswer = "y";
const string csvFileType = "csv";
const string xmlFileType = "xml";
if (File.Exists(path))
{
write($"File is exist - rewrite {path}? [Y/n] ");
if (char.TryParse(Console.ReadLine(), out char answer))
{
if (answer.ToString(CultureInfo.InvariantCulture).Equals(yesAnswer, StringComparison.InvariantCultureIgnoreCase))
{
File.Delete(path);
Write(path);
}
else
{
return;
}
}
}
else
{
try
{
Write(path);
}
catch (FileLoadException ex)
{
throw new ArgumentException($"Export failed: can't open file {path}.", ex.Message);
}
}
void Write(string p)
{
using (StreamWriter streamWriter = new StreamWriter(p))
{
FileCabinetServiceSnapshot snapshot = this.Service.MakeSnapshot();
if (format == csvFileType)
{
snapshot.SaveToCSV(streamWriter);
}
else if (commands[FormatPosition] == xmlFileType)
{
snapshot.SaveToXML(streamWriter);
}
else
{
write($"There is no {commands[FormatPosition]} command.");
return;
}
write($"All records are exported to file {p}.");
}
}
}