void HandleCommandLine()

in datastore/api/TaskList/Program.cs [125:165]
41 lines of code
11 McCabe index (conditional complexity)

        void HandleCommandLine(string commandLine)
        {
            string[] args = commandLine.Split(null, 2);
            if (args.Length < 1)
                throw new ArgumentException("not enough args");
            string command = args[0];
            switch (command)
            {
                case "new":
                    if (args.Length != 2)
                        throw new ArgumentException("missing description");
                    AddTask(args[1]);
                    Console.WriteLine("task added");
                    break;
                case "done":
                    if (args.Length != 2)
                        throw new ArgumentException("missing task id");
                    long id = long.Parse(args[1]);
                    if (MarkDone(id))
                        Console.WriteLine("task marked done");
                    else
                        Console.WriteLine($"did not find a Task entity with ID {id}");
                    break;
                case "list":
                    var tasks = FormatTasks(ListTasks());
                    Console.WriteLine($"found {tasks.Count()} tasks");
                    Console.WriteLine("task ID : description");
                    Console.WriteLine("---------------------");
                    foreach (string task in tasks)
                        Console.WriteLine(task);
                    break;
                case "delete":
                    if (args.Length != 2)
                        throw new ArgumentException("missing task id");
                    DeleteTask(long.Parse(args[1]));
                    Console.WriteLine("task deleted (if it existed)");
                    break;
                default:
                    throw new ArgumentException($"unrecognized command: {command}");
            }
        }