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

namespace EscapeRoomEngine.Engine.Runtime.Utilities
{
    public static class Utilities
    {
        #region Math

        /// <summary>
        /// Returns whether a position relative to some placement is inside its dimensions.
        /// </summary>
        /// <param name="position">The position to check, relative to the placement.</param>
        /// <param name="placement">The placement to check the position against.</param>
        public static bool IsInsideRelative(this Vector3Int position, Placement placement)
        {
            return position.x >= 0 && position.z >= 0 && position.x < placement.size.x && position.z < placement.size.y;
        }

        #endregion

        #region Randomness
        
        public static int RandomInclusive(int from, int to) => Random.Range(from, to + 1);

        public static T RandomElement<T>(this List<T> list) => list[Random.Range(0, list.Count)];
        public static T RandomElement<T>(this HashSet<T> set) => set.ElementAt(Random.Range(0, set.Count));

        #endregion
    }

    public static class Vector2IntExtensions
    {
        public static Vector3Int ProjectAtFloor(this Vector2Int vector) => vector.ProjectAtHeight(0);

        public static Vector3Int ProjectAtHeight(this Vector2Int vector, int height) =>
            new Vector3Int(vector.x, height, vector.y);
    }
}