// Represents a series of ActionSequences
// that are mutually exclusive. Typically
// this is designed to represent multiple ActionSequences
// that act on the same set of blocks, such as an
// "Extend" and "Retract" action for a multi-stage mechanical
// construction, or perhaps "Open" and "Close" sequences for a set of
// mechanical doors.

using System.Collections.Generic;
using System.Linq;

namespace IngameScript
{
    partial class Program
    {
        public class ActionGroup
        {
            public string Name { get; private set; }

            public bool Running { get; private set; } = false;

            private Dictionary<string, ActionSequence> _actions = new Dictionary<string, ActionSequence>();
            private IConsole _console;

            public ActionGroup(IConsole console, string name)
            {
                // Todo: use a PrefixedConsole here?
                _console = console;
                Name = name;
            }

            // Add an action to the sequence called actionName, which will be created if it doesn't already exist.
            public void AddActionBlock(string actionName, int step, IBlockAction actionBlock)
            {
                if (!_actions.ContainsKey(actionName)) _actions[actionName] = new ActionSequence(actionName);
                _actions[actionName].Add(step, actionBlock);
            }

            public IEnumerator<bool> RunAction(string actionName)
            {
                if (Running)
                {
                    _console.Print($"Ignoring action '{actionName}' on '{Name}'. Already running an action.");
                    yield break;
                }

                if (!_actions.ContainsKey(actionName))
                {
                    _console.Print($"No action '{actionName}' defined for '{Name}'");
                    yield break;
                }

                Running = true;

                IEnumerator<bool> job = _actions[actionName].Run();
                while (job.MoveNext()) yield return true;

                Running = false;
            }
        }
    }
}