using System.Collections.Generic;
using EscapeRoomEngine.Engine.Runtime.Modules;
using NaughtyAttributes;
using UnityEngine;

namespace EscapeRoomEngine.Engine.Runtime.Requirements
{
    [CreateAssetMenu(menuName = "Requirements/No Overlap")]
    public class NoOverlap : PlacementRequirement
    {
        [InfoBox("A module relative position will be oriented with the module (e.g. (0, 1) is always in front of the module).")]
        [Label("Reserved Positions (Module Relative)")]
        public List<Vector2Int> mrReservedPositions;

        protected override IEnumerable<Vector2Int> GenerateCandidates(Module module, Space space)
        {
            var candidates = space.rrDimensions.EveryPosition;
            
            space.AllModules.ForEach(m =>
            {
                candidates.Remove(m.SrPosition);
                m.description.placementRequirements
                    .FindAll(r => r is NoOverlap)
                    .ForEach(r => ((NoOverlap)r).mrReservedPositions
                        .ForEach(p => candidates.Remove(m.ToSpaceRelative(p))));
            });

            return candidates;
        }
    }
}