using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

// 코스 데이터가 발판 위에 따로 얹는 장애물 프리팹을 제어한다.
public class CourseObstacle : MonoBehaviour {
    public enum ObstacleKind {
        Jump,
        Slide
    }

    public ObstacleKind obstacleKind = ObstacleKind.Jump;
    public Transform lowObstacle;
    public SlideObstaclePattern slidePattern;
    public Transform ceilingPlatform;

    private Platform.PlatformSkin reservedSkin = Platform.PlatformSkin.Airport;
    private Platform.PlatformPattern reservedPlatformPattern = Platform.PlatformPattern.LowMid;
    private SlideObstaclePattern.SlideLayout reservedSlideLayout = SlideObstaclePattern.SlideLayout.CenterPair;

    public void Configure(
        Platform.PlatformSkin platformSkin,
        Platform.PlatformPattern platformPattern,
        SlideObstaclePattern.SlideLayout slideLayout) {
        reservedSkin = platformSkin;
        reservedPlatformPattern = platformPattern;
        reservedSlideLayout = slideLayout;
        ApplyConfiguration();
    }

    private void Awake() {
        CacheReferences();
    }

    private void OnEnable() {
        ApplyConfiguration();
    }

    private void CacheReferences() {
        if(lowObstacle == null)
        {
            Transform foundObstacle = transform.Find("Jump Obstacle");
            if(foundObstacle != null)
            {
                lowObstacle = foundObstacle;
            }
        }

        if(slidePattern == null)
        {
            slidePattern = GetComponent<SlideObstaclePattern>();
        }

        if(ceilingPlatform == null)
        {
            Transform foundCeiling = transform.Find("Ceiling Platform");
            if(foundCeiling != null)
            {
                ceilingPlatform = foundCeiling;
            }
        }
    }

    private void ApplyConfiguration() {
        CacheReferences();

        if(obstacleKind == ObstacleKind.Jump)
        {
            ApplyJumpPosition();
        }
        else if(slidePattern != null)
        {
            slidePattern.ConfigureLayout(reservedSlideLayout);
        }

        ApplyVisualSkin();
    }

    private void ApplyJumpPosition() {
        if(lowObstacle == null)
        {
            return;
        }

        Vector3 localPosition = lowObstacle.localPosition;
        localPosition.x = GetJumpObstacleX(reservedPlatformPattern);
        lowObstacle.localPosition = localPosition;
    }

    private float GetJumpObstacleX(Platform.PlatformPattern platformPattern) {
        switch(platformPattern)
        {
            case Platform.PlatformPattern.LowLeft:
                return -0.44f;
            case Platform.PlatformPattern.LowRight:
                return 0.44f;
            case Platform.PlatformPattern.LowMid:
            default:
                return 0f;
        }
    }

    private void ApplyVisualSkin() {
#if UNITY_EDITOR
        if(obstacleKind == ObstacleKind.Jump)
        {
            ApplySprite(lowObstacle, LoadSpriteAtPath(GetLowObstacleSkinPath(reservedSkin)));
            return;
        }

        Sprite hangingSprite = LoadSpriteAtPath(GetHangingObstacleSkinPath(reservedSkin));
        Sprite ceilingSprite = LoadSpriteAtPath(GetCeilingSkinPath(reservedSkin));

        if(slidePattern != null && slidePattern.obstacles != null)
        {
            for(int i = 0; i < slidePattern.obstacles.Length; i++)
            {
                ApplySprite(slidePattern.obstacles[i], hangingSprite);
            }
        }

        ApplySprite(ceilingPlatform, ceilingSprite);
#endif
    }

#if UNITY_EDITOR
    private void ApplySprite(Transform target, Sprite sprite) {
        if(target == null || sprite == null)
        {
            return;
        }

        SpriteRenderer spriteRenderer = target.GetComponent<SpriteRenderer>();
        if(spriteRenderer != null)
        {
            spriteRenderer.sprite = sprite;
        }
    }

    private Sprite LoadSpriteAtPath(string assetPath) {
        if(string.IsNullOrEmpty(assetPath))
        {
            return null;
        }

        return AssetDatabase.LoadAssetAtPath<Sprite>(assetPath);
    }

    private string GetLowObstacleSkinPath(Platform.PlatformSkin platformSkin) {
        switch(platformSkin)
        {
            case Platform.PlatformSkin.Japan:
                return "Assets/Sprites/ObstacleSkins/Skin_Obstacle_StoneLantern.png";
            case Platform.PlatformSkin.China:
                return "Assets/Sprites/ObstacleSkins/Skin_Obstacle_MarketCrate.png";
            case Platform.PlatformSkin.USA:
                return "Assets/Sprites/ObstacleSkins/Skin_Obstacle_Cone.png";
            case Platform.PlatformSkin.Airport:
            default:
                return "Assets/Sprites/ObstacleSkins/Skin_Obstacle_Suitcases.png";
        }
    }

    private string GetHangingObstacleSkinPath(Platform.PlatformSkin platformSkin) {
        switch(platformSkin)
        {
            case Platform.PlatformSkin.Japan:
                return "Assets/Sprites/ObstacleSkins/Skin_Hanging_RoadSign.png";
            case Platform.PlatformSkin.China:
                return "Assets/Sprites/ObstacleSkins/Skin_Hanging_RedLanterns.png";
            case Platform.PlatformSkin.USA:
                return "Assets/Sprites/ObstacleSkins/Skin_Hanging_Banner.png";
            case Platform.PlatformSkin.Airport:
            default:
                return "Assets/Sprites/ObstacleSkins/Skin_Hanging_AirportSign.png";
        }
    }

    private string GetCeilingSkinPath(Platform.PlatformSkin platformSkin) {
        if(platformSkin == Platform.PlatformSkin.Airport)
        {
            return "Assets/Sprites/ObstacleSkins/Skin_Platform_AirportCeiling.png";
        }

        switch(platformSkin)
        {
            case Platform.PlatformSkin.Japan:
                return "Assets/Sprites/ObstacleSkins/Skin_Platform_Japan.png";
            case Platform.PlatformSkin.China:
                return "Assets/Sprites/ObstacleSkins/Skin_Platform_China.png";
            case Platform.PlatformSkin.USA:
                return "Assets/Sprites/ObstacleSkins/Skin_Platform_USA.png";
            case Platform.PlatformSkin.Airport:
            default:
                return "Assets/Sprites/ObstacleSkins/Skin_Platform_AirportFloorTile.png";
        }
    }
#endif
}