public static IEnumerable <T> Apply <T>(this AplhaNumericFilter keyValuePairs, IEnumerable <T> source, IEnumerable <T> destination, params Func <T, string>[] selectors)
{
if (destination == null)
{
destination = source.ToList();
}
if (keyValuePairs.Any(x => x.Value > 0))
{
destination = source.Where(x =>
{
var result = 0;
foreach (var selector in selectors)
{
var prop = selector(x);
var value = keyValuePairs.ContainsKey(prop[0].ToString()) ? keyValuePairs[prop[0].ToString()] : 0;
result += value;
}
return(result > 0);
});
keyValuePairs.Build();
}
var allKey = $"{keyValuePairs.BindPrefix}[All]";
if (keyValuePairs.ContainsKey(allKey) && keyValuePairs[allKey] > 0)
{
destination = source.ToList();
}
return(destination);
}
private static void GetAtoZ(this AplhaNumericFilter keyValuePairs)
{
for (char c = 'A'; c <= 'Z'; c++)
{
if (!keyValuePairs.ContainsKey(c.ToString()))
{
keyValuePairs.AddOrUpdate(c.ToString(), keyValuePairs[AplhaNumericFilterConstants.ALL]);
}
else
{
keyValuePairs.AddOrUpdate(c.ToString(), keyValuePairs[c.ToString()]);
}
}
}
private static void Get0To10(this AplhaNumericFilter keyValuePairs)
{
for (int i = 0; i < 10; i++)
{
if (!keyValuePairs.ContainsKey(i.ToString()))
{
keyValuePairs.AddOrUpdate(i.ToString(), keyValuePairs[AplhaNumericFilterConstants.ALL]);
}
else
{
keyValuePairs.AddOrUpdate(i.ToString(), keyValuePairs[i.ToString()]);
}
}
}
public static AplhaNumericFilter Build(this AplhaNumericFilter keyValuePairs)
{
if (!keyValuePairs.ContainsKey(AplhaNumericFilterConstants.ALL))
{
keyValuePairs.AddOrUpdate(AplhaNumericFilterConstants.ALL, 0);
}
else
{
keyValuePairs.AddOrUpdate(AplhaNumericFilterConstants.ALL, keyValuePairs[AplhaNumericFilterConstants.ALL]);
}
keyValuePairs.GetAtoZ();
keyValuePairs.Get0To10();
return(keyValuePairs);
}
public static string UnwrappedKey(this AplhaNumericFilter keyValuePairs, string key)
{
return(key.TrimStart($"{keyValuePairs.BindPrefix}[".ToCharArray()).TrimEnd(']'));
}
public static string WrappedKey(this AplhaNumericFilter keyValuePairs, string key)
{
return(key.StartsWith($"{keyValuePairs.BindPrefix}[") && key.EndsWith("]") ? key : $"{keyValuePairs.BindPrefix}[{key}]");
}
