using BumpCombat.Player;
using BumpCombat.Core;
using UnityEngine;

namespace BumpCombat.Progression
{
    [CreateAssetMenu(
        fileName = "ModifierDefinition",
        menuName = "BumpCombat/Progression/Modifier Definition")]
    public sealed class ModifierDefinition : ScriptableObject
    {
        [SerializeField] private string modifierId;
        [SerializeField] private string displayName;
        [SerializeField] private CharacterStat stat;
        [SerializeField] private ModifierOperation operation;
        [SerializeField] private float value;
        [SerializeField, Min(1)] private int maximumStacks = 1;
        [SerializeField, Min(0f)] private float healOnApply;

        public string ModifierId => modifierId;
        public string DisplayName => displayName;
        public CharacterStat Stat => stat;
        public ModifierOperation Operation => operation;
        public float Value => value;
        public int MaximumStacks => maximumStacks;
        public float HealOnApply => healOnApply;

        public bool CanApply(PlayerStats playerStats)
        {
            return playerStats != null
                && playerStats.GetStackCount(modifierId, stat) < maximumStacks;
        }

        public bool TryApply(
            PlayerStats playerStats,
            PlayerHealth playerHealth)
        {
            if (!CanApply(playerStats)
                || !playerStats.AddModifier(new StatModifier(
                    modifierId,
                    stat,
                    operation,
                    value,
                    maximumStacks)))
            {
                return false;
            }

            if (healOnApply > 0f && playerHealth != null)
            {
                playerHealth.Heal(healOnApply);
            }
            return true;
        }

#if UNITY_EDITOR
        public void Configure(
            string id,
            string label,
            CharacterStat targetStat,
            ModifierOperation modifierOperation,
            float modifierValue,
            int maxStacks,
            float immediateHeal = 0f)
        {
            modifierId = id;
            displayName = label;
            stat = targetStat;
            operation = modifierOperation;
            value = modifierValue;
            maximumStacks = Mathf.Max(1, maxStacks);
            healOnApply = Mathf.Max(0f, immediateHeal);
        }
#endif
    }
}