using UnityEngine;

/// <summary>
/// Basic player combat controller: right-click an enemy to chase and attack in range.
/// </summary>
public class PlayerCombatController : MonoBehaviour
{
    [Header("Combat")]
    public int attackDamage = 1;
    public float attackRange = 1.5f;
    public float attackCooldown = 0.6f;
    [Tooltip("Maximum chase distance. Clear target if enemy gets farther than this.")]
    public float maxChaseDistance = 20f;

    [Header("Movement")]
    public bool useMovementController = true;

    [Header("Debug")]
    public bool enableDebugLogs = false;

    private Enemy targetEnemy;
    private float nextAttackTime = 0f;
    private NavMeshMovementController movementController;

    private void Awake()
    {
        movementController = GetComponent<NavMeshMovementController>();
    }

    private void Update()
    {
        if (targetEnemy == null) return;

        if (targetEnemy.GetCurrentHP() <= 0)
        {
            Log("Target enemy is dead, clearing combat target");
            ClearCombatTarget();
            return;
        }

        float distance = Vector3.Distance(transform.position, targetEnemy.transform.position);
        
        // Auto-clear if enemy goes out of chase range
        if (distance > maxChaseDistance)
        {
            Log($"Enemy out of chase range (distance: {distance:F2}, max: {maxChaseDistance:F2}), clearing target");
            ClearCombatTarget();
            return;
        }

        if (useMovementController && movementController != null)
        {
            if (distance > attackRange)
            {
                Log($"Moving to enemy (distance: {distance:F2} > attackRange: {attackRange})");
                movementController.MoveTo(targetEnemy.transform.position);
            }
            else
            {
                Log($"In attack range, stopping (distance: {distance:F2})");
                movementController.Stop();
                movementController.SetLookTarget(targetEnemy.transform.position);
            }
        }

        if (distance <= attackRange && Time.time >= nextAttackTime)
        {
            Log($"ATTACKING! Distance: {distance:F2}, Cooldown ready: {Time.time >= nextAttackTime}");
            nextAttackTime = Time.time + attackCooldown;

            Character character = GetComponent<Character>();
            if (character != null)
            {
                character.TriggerAttack();
            }

            targetEnemy.TakeDamage(attackDamage);
        }
    }

    public void SetTargetEnemy(Enemy enemy)
    {
        if (enemy == null) return;

        Log($"Setting target: {enemy.enemyName}");
        targetEnemy = enemy;
        nextAttackTime = Time.time;
        
        // Set weapon type to Melee for combat
        Character character = GetComponent<Character>();
        if (character != null)
        {
            character.SetWeaponType(Character.WeaponType.Melee);
        }
    }

    public void ClearCombatTarget()
    {
        if (targetEnemy != null)
            Log($"Clearing target: {targetEnemy.enemyName}");
        targetEnemy = null;
        
        // Return to idle weapon state
        Character character = GetComponent<Character>();
        if (character != null)
        {
            character.SetWeaponType(Character.WeaponType.None);
        }
    }

    public Enemy GetTargetEnemy() => targetEnemy;

    private void Log(string message)
    {
        if (enableDebugLogs)
        {
            Debug.Log($"[PlayerCombat] {message}", gameObject);
        }
    }

    private void OnDrawGizmosSelected()
    {
        // Draw attack range
        Gizmos.color = Color.red;
        Gizmos.DrawWireSphere(transform.position, attackRange);

        // Draw max chase distance
        Gizmos.color = Color.yellow;
        Gizmos.DrawWireSphere(transform.position, maxChaseDistance);
    }
}