public WriteResult Delete(string key)
{
if (string.IsNullOrWhiteSpace(key))
{
return(WriteResult.Failure("Key parameter is missing"));
}
string value;
var isSuccess = storage.TryRemove(key, out value);
return(isSuccess
? WriteResult.Success($"Key '{key}' with value '{value}' removed")
: WriteResult.Success($"Key '{key}' doesn't exist"));
}
public WriteResult Insert(string key, string value)
{
if (string.IsNullOrWhiteSpace(key))
{
return(WriteResult.Failure("Key parameter is missing"));
}
if (string.IsNullOrWhiteSpace(value))
{
return(WriteResult.Failure("Value parameter is missing"));
}
var isSuccess = storage.TryAdd(key, value);
return(isSuccess
? WriteResult.Success($"Key '{key}' with value '{value}' added")
: WriteResult.Failure($"Key '{key}' already exists"));
}
public WriteResult Update(string key, string value)
{
if (string.IsNullOrWhiteSpace(key))
{
return(WriteResult.Failure("Key parameter is missing"));
}
if (string.IsNullOrWhiteSpace(value))
{
return(WriteResult.Failure("Value parameter is missing"));
}
var oldValue = Find <string>(key);
if (oldValue.IsSuccess)
{
var isSuccess = storage.TryUpdate(key, value, oldValue.Value);
return(WriteResult.Success($"Value '{oldValue.Value}' with '{key}' updated with new value '{value}'"));
}
else
{
return(WriteResult.Failure(oldValue.Message));
}
}