using Unity.Netcode;
using UnityEngine;

public sealed class PlayerSpawnController : NetworkBehaviour, IPlayerSystem
{
    [Header("Random spawn area")]
    [SerializeField] private Vector3 spawnCenter = new(0f, 1f, 0f);
    [SerializeField, Min(0f)] private float spawnRadius = 8f;

    private readonly NetworkVariable<Vector3> assignedSpawnPosition = new(
        Vector3.zero,
        NetworkVariableReadPermission.Everyone,
        NetworkVariableWritePermission.Server);

    public void Initialize(PlayerFacade facade) { }

    public override void OnNetworkSpawn()
    {
        assignedSpawnPosition.OnValueChanged += HandleSpawnPositionChanged;

        if (IsServer)
        {
            Vector2 randomOffset = Random.insideUnitCircle * spawnRadius;
            assignedSpawnPosition.Value = spawnCenter + new Vector3(randomOffset.x, 0f, randomOffset.y);
        }

        ApplySpawnPosition(assignedSpawnPosition.Value);
    }

    public override void OnNetworkDespawn()
    {
        assignedSpawnPosition.OnValueChanged -= HandleSpawnPositionChanged;
    }

    private void HandleSpawnPositionChanged(Vector3 _, Vector3 position) =>
        ApplySpawnPosition(position);

    private void ApplySpawnPosition(Vector3 position)
    {
        if (IsOwner)
            transform.position = position;
    }
}