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

[Serializable]
public struct Condition<T>
{
    [Serializable]
    struct ConditionElement
    {
        public T condition;
        public bool mustMatch;
    }

    [SerializeField] ConditionElement[] conditions;
    [SerializeField] int shouldMatchCount;

    public bool CheckCondition(IReadOnlyList<T> currentState)
    {
        if(shouldMatchCount == 0)
            shouldMatchCount = conditions.Length;

        var currentRemainConditions = new List<ConditionElement>();
        int mustMatchCount = 0;

        for(int i = 0; i < conditions.Length; i++)
        {
            currentRemainConditions.Add(conditions[i]);
            if (conditions[i].mustMatch)
                mustMatchCount++;
        }

        int currentMatchCount = 0;
        for (int i = 0; i < currentState.Count; i++)
        {
            int targetIdx = currentRemainConditions.FindIndex(x => x.condition.Equals(currentState[i]));
            if (targetIdx == -1) continue;

            if(currentRemainConditions[targetIdx].mustMatch)
                currentMatchCount--;

            currentMatchCount++;
            currentRemainConditions.RemoveAt(targetIdx);
        }

        return mustMatchCount <= 0 && currentMatchCount >= shouldMatchCount;
    }
}