public static void Main(string[] args)
{
// Variables and flags
// The path to the input file to load.
string inputFile = string.Empty;
// The path of the output file to save.
string outputFile = string.Empty;
// The flag to determine if we overwrite the output file or append to it.
bool appendToFile = false;
// The flag to determine if we need to display the number of entries
bool displayCount = false;
// The flag to determine if we need to sort the results via name.
bool sortEnabled = false;
// The column name to be used to determine which sort comparison function to use.
string sortColumnName = string.Empty;
// The results to be output to a file or to the console
WeaponCollection results = new WeaponCollection();
for (int i = 0; i < args.Length; i++)
{
// h or --help for help to output the instructions on how to use it
if (args[i] == "-h" || args[i] == "--help")
{
Console.WriteLine("-i <path> or --input <path> : loads the input file path specified (required)");
Console.WriteLine("-o <path> or --output <path> : saves result in the output file path specified (optional)");
// TODO: include help info for count
//"-c or --count : displays the number of entries in the input file (optional).";
Console.WriteLine("-c or --count : displays the number of entries in the input file (optional).");
// TODO: include help info for append
//"-a or --append : enables append mode when writing to an existing output file (optional)";
Console.WriteLine("-a or --append : enables append mode when writing to an existing output file (optional)");
// TODO: include help info for sort
//"-s or --sort <column name> : outputs the results sorted by column name";
Console.WriteLine("-s or --sort <column name> : outputs the results sorted by column name");
break;
}
//ERROR: -2. Missing some safety checks.
//else if (args[i] == "-i" || args[i] == "--input")
//{
// // Check to make sure there's a second argument for the file name.
// if (args.Length > i + 1)
// {
// // stores the file name in the next argument to inputFile
// ++i;
// inputFile = args[i];
// if (string.IsNullOrEmpty(inputFile))
// {
// // Print no input file specified.
// Console.WriteLine("No input file specified");
// }
// else if (!File.Exists(inputFile))
// {
// // Print the file specified does not exist.
// Console.WriteLine("The specified file {0} does not exit.", inputFile);
// }
// else
// {
// // This function returns a List<Weapon> once the data is parsed.
// results.Load(inputFile);
// }
// }
//}
else if (args[i] == "-i" || args[i] == "--input")
{
// Check to make sure there's a second argument for the file name.
if (args.Length > i + 1)
{
// stores the file name in the next argument to inputFile
++i;
inputFile = args[i];
if (string.IsNullOrEmpty(inputFile))
{
// Print no input file specified.
Console.WriteLine("No input file specified");
}
else if (!File.Exists(inputFile))
{
// Print the file specified does not exist.
Console.WriteLine("The specified file {0} does not exit.", inputFile);
}
else
{
// This function returns a List<Weapon> once the data is parsed.
results.Load(inputFile);
}
//results.Load(inputFile);
}
}
else if (args[i] == "-s" || args[i] == "--sort")
{
// TODO: set the sortEnabled flag and see if the next argument is set for the column name
if (args.Length > i + 1)
{
sortEnabled = true;
++i;
sortColumnName = args[i];
}
// TODO: set the sortColumnName string used for determining if there's another sort function.
}
else if (args[i] == "-c" || args[i] == "--count")
{
displayCount = true;
}
else if (args[i] == "-a" || args[i] == "--append")
{
// TODO: set the appendToFile flag
appendToFile = true;
}
else if (args[i] == "-o" || args[i] == "--output")
{
// validation to make sure we do have an argument after the flag
if (args.Length > i + 1)
{
// increment the index.
++i;
string filePath = args[i];
if (string.IsNullOrEmpty(filePath))
{
// TODO: print No output file specified.
Console.WriteLine("No output file specified.");
}
else
{
// TODO: set the output file to the outputFile
outputFile = filePath;
}
}
}
else
{
Console.WriteLine("The argument Arg[{0}] = [{1}] is invalid", i, args[i]);
}
}
//ERROR: -3. Why are you not using the SortBy method that you created for weaponCollection?
//replace all of this by: results.SortBy(columnName)
if (sortEnabled)
{
// TODO: add implementation to determine the column name to trigger a different sort. (Hint: column names are the 4 properties of the weapon class)
// print: Sorting by <column name> e.g. BaseAttack
Console.WriteLine($"Sorting by {sortColumnName}.");
// Sorts the list based off of the Weapon name.
results.SortBy(sortColumnName);
//switch (sortColumnName.ToLower())
//{
// case "name":
// results.Sort(Weapon.CompareByName);
// break;
// case "type":
// results.Sort(Weapon.CompareByType);
// break;
// case "rarity":
// results.Sort(Weapon.CompareByRarity);
// break;
// case "baseattack":
// results.Sort(Weapon.CompareByBaseAttack);
// break;
// default:
// Console.WriteLine("Wrong column name!");
// break;
//}
}
if (displayCount)
{
Console.WriteLine("There are {0} entries", results.Count);
}
//ERROR -1. Missing a check before save
//if(appendToFile){
// results.Save(outputFile)
//}
if (results.Count > 0)
{
if (!string.IsNullOrEmpty(outputFile))
{
if (appendToFile)
{
results.Save(outputFile);
}
//results.Save(outputFile);
}
else
{
// prints out each entry in the weapon list results.
for (int i = 0; i < results.Count; i++)
{
Console.WriteLine(results[i]);
}
}
}
Console.WriteLine("Done!");
}