using BumpCombat.Core;
using UnityEngine;

namespace BumpCombat.Enemies
{
    [DisallowMultipleComponent]
    public sealed class EnemyModel : CharacterModel
    {
        private EnemyDefinition definition;
        private float maxHealthMultiplier = 1f;
        private float moveSpeedMultiplier = 1f;
        private float attackDamageMultiplier = 1f;

        public EnemyDefinition Definition => definition;
        public override float MaxHealth => definition == null
            ? 0f
            : Evaluate(
                CharacterStat.MaxHealth,
                definition.MaxHealth * maxHealthMultiplier);
        public override float MoveSpeed => definition == null
            ? 0f
            : Evaluate(
                CharacterStat.MoveSpeed,
                definition.MoveSpeed * moveSpeedMultiplier);
        public float AttackDamage => definition == null
            ? 0f
            : CalculateAttackDamage(
                definition.AttackDamage * attackDamageMultiplier);

        public void ConfigureDefinition(EnemyDefinition enemyDefinition)
        {
            definition = enemyDefinition;
        }

        public void ConfigureEventMultipliers(
            float healthMultiplier,
            float speedMultiplier,
            float damageMultiplier)
        {
            maxHealthMultiplier = Mathf.Max(1f, healthMultiplier);
            moveSpeedMultiplier = Mathf.Max(0f, speedMultiplier);
            attackDamageMultiplier = Mathf.Max(0f, damageMultiplier);
        }

        public float CalculatePatternDamage(
            float patternMultiplier,
            bool applyEventTuning)
        {
            if (definition == null)
            {
                return 0f;
            }

            float damage = definition.AttackDamage * patternMultiplier;
            if (applyEventTuning)
            {
                damage *= attackDamageMultiplier;
            }

            return CalculateAttackDamage(damage);
        }
    }
}