using UnityEngine;
using Zenject;

namespace DanroJump.Gameplay
{
    public sealed class GameplayInstaller : MonoInstaller
    {
        [SerializeField] private JumpPlayerController player;
        [SerializeField] private Camera gameplayCamera;
        [SerializeField] private PlatformSpawner platformSpawner;
        [SerializeField] private GameplayDifficultyProgression difficultyProgression;

        public override void InstallBindings()
        {
            if (!ValidateReferences())
            {
                return;
            }

            Container.BindInstance(player).AsSingle();
            Container.BindInstance(gameplayCamera).AsSingle();
            Container.BindInstance(platformSpawner).AsSingle();
            Container.BindInstance(difficultyProgression).AsSingle();
            Container.Bind<PlatformContentSpawner>().AsSingle();

            Container.QueueForInject(player);
            Container.QueueForInject(difficultyProgression);
            Container.QueueForInject(platformSpawner);

            if (gameplayCamera != null && gameplayCamera.TryGetComponent(out VerticalCameraFollow cameraFollow))
            {
                Container.QueueForInject(cameraFollow);
            }
        }

        private bool ValidateReferences()
        {
            var isValid = true;

            isValid &= ValidateReference(player, nameof(player));
            isValid &= ValidateReference(gameplayCamera, nameof(gameplayCamera));
            isValid &= ValidateReference(platformSpawner, nameof(platformSpawner));
            isValid &= ValidateReference(difficultyProgression, nameof(difficultyProgression));

            return isValid;
        }

        private bool ValidateReference(Object reference, string fieldName)
        {
            if (reference != null)
            {
                return true;
            }

            Debug.LogError($"{nameof(GameplayInstaller)} is missing '{fieldName}' reference.", this);
            return false;
        }
    }
}