private void Delete(string parameters)
{
if (parameters is null)
{
throw new ArgumentNullException(nameof(parameters));
}
Dictionary <string, string> where = QueryParser.DeleteParser(parameters);
if (where != null)
{
FileCabinetRecord whereRecord = DataHelper.CreateRecordFromDict(where);
var records = this.Service.FindRecords(whereRecord, QueryParser.TypeCondition);
var builder = new StringBuilder();
int countMatchedRecords = 0;
foreach (var item in records)
{
builder.Append($"#{item.Id}, ");
countMatchedRecords++;
}
string text = countMatchedRecords == 0
? $"No deleted records."
: $"{(countMatchedRecords == 1 ? "Record" : "Records")} " +
$"{builder.ToString().TrimEnd(WhiteSpace, Comma)} " +
$"{(countMatchedRecords == 1 ? "is" : "are")} deleted.";
this.Service.Delete(records);
Memoization.RefreshMemoization();
Console.WriteLine(text);
}
}
private void Update(string parameters)
{
if (parameters is null)
{
throw new ArgumentNullException(nameof(parameters));
}
var(propNewValuesPair, propWhereValuesPair) = QueryParser.UpdateParser(parameters);
if (propNewValuesPair != null || propWhereValuesPair != null)
{
var set = propNewValuesPair;
var where = propWhereValuesPair;
var newValues = DataHelper.CreateRecordFromDict(set);
var oldRecords = DataHelper.CreateRecordFromDict(where);
if (newValues != null && oldRecords != null)
{
var updatedRecords = this.Service.FindRecords(oldRecords, QueryParser.TypeCondition);
var builder = new StringBuilder();
foreach (var item in updatedRecords)
{
builder.Append($"#{item.Id}, ");
var current = this.TrimFields(newValues, item);
try
{
this.Service.EditRecord(item.Id, current);
}
catch (ArgumentException ex)
{
Console.WriteLine(ex.Message + "Invalid parameters.");
builder.Clear();
}
Memoization.RefreshMemoization();
}
string message = string.Empty;
if (builder.Length == 0)
{
message = "There is no selected records to update matching this condition.";
}
else if (set.TryGetValue("id", out string value))
{
Console.WriteLine("Unfortunately, you cannot update id.");
}
else
{
message = updatedRecords.Count() == 1
? $"Record {builder.ToString().TrimEnd(' ', ',')} is updated."
: $"Records {builder.ToString().TrimEnd(' ', ',')} are updated.";
}
Console.WriteLine(message);
}
}
}