using System.IO;
using System.Linq;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;

namespace BinxForge.CoinRoom.Editor
{
    public static class CreateCoinRoom
    {
        private const string Root = "Assets/ForgeStarter/";
        [MenuItem("Forge/Create Coin Room Scene")]
        public static void Create()
        {
            const string scenePath = Root + "Scenes/CoinRoom.unity";
            if (!EditorSceneManager.SaveCurrentModifiedScenesIfUserWantsTo()) return;
            if (File.Exists(scenePath) && !EditorUtility.DisplayDialog("Replace tutorial scene?", "This replaces only Assets/ForgeStarter/Scenes/CoinRoom.unity. Keep a copy of your changes first.", "Replace", "Cancel")) return;
            if (!File.Exists(Root + "Art/forge-sprites.png")) { Debug.LogError("Copy the complete ForgeStarter folder, including Art."); return; }
            Directory.CreateDirectory(Root + "Generated");
            Directory.CreateDirectory(Root + "Scenes");
            var texture = new Texture2D(2, 2);
            texture.SetPixels(new[] { Color.white, Color.white, Color.white, Color.white });
            texture.Apply();
            File.WriteAllBytes(Root + "Generated/White.png", texture.EncodeToPNG());
            Object.DestroyImmediate(texture);
            AssetDatabase.Refresh();
            ConfigureTexture(Root + "Generated/White.png", 2);
            ConfigureTexture(Root + "Art/forge-sprites.png", 32);
            var square = AssetDatabase.LoadAssetAtPath<Sprite>(Root + "Generated/White.png");
            var sheet = AssetDatabase.LoadAssetAtPath<Texture2D>(Root + "Art/forge-sprites.png");
            if (square == null || sheet == null) { Debug.LogError("Texture import failed; inspect Console before continuing."); return; }
            var scene = EditorSceneManager.NewScene(NewSceneSetup.EmptyScene, NewSceneMode.Single);
            var camera = new GameObject("Main Camera").AddComponent<Camera>();
            camera.tag = "MainCamera";
            camera.transform.position = new Vector3(0, 0, -10);
            camera.orthographic = true;
            camera.orthographicSize = 5;
            camera.clearFlags = CameraClearFlags.SolidColor;
            camera.backgroundColor = new Color(0.04f, 0.06f, 0.12f);
            var room = new GameObject("Coin Room").AddComponent<CoinRoom>();
            room.worldCamera = camera;
            var player = Shape("Player", square, room.spawn, new Vector2(0.8f, 0.8f), Color.cyan);
            var playerBody = player.AddComponent<Rigidbody2D>();
            playerBody.gravityScale = 0;
            playerBody.freezeRotation = true;
            playerBody.collisionDetectionMode = CollisionDetectionMode2D.Continuous;
            playerBody.interpolation = RigidbodyInterpolation2D.Interpolate;
            player.AddComponent<BoxCollider2D>();
            room.player = playerBody;
            var idle = player.AddComponent<IdleSprite>(); idle.sheet = sheet; idle.room = room;
            Wall("North", new Vector2(0, 4), new Vector2(14, 0.5f), square);
            Wall("South", new Vector2(0, -4), new Vector2(14, 0.5f), square);
            Wall("West", new Vector2(-7, 0), new Vector2(0.5f, 8), square);
            Wall("East", new Vector2(7, 0), new Vector2(0.5f, 8), square);
            Wall("Divider", new Vector2(0, 1), new Vector2(0.5f, 3), square);
            Vector2[] positions = { new Vector2(-5, 3), new Vector2(5, 3), new Vector2(5, -3) };
            room.coins = new Pickup[positions.Length];
            for (int i = 0; i < positions.Length; i++)
            {
                var obj = Shape("Coin " + i, square, positions[i], new Vector2(0.45f, 0.45f), Color.yellow);
                obj.AddComponent<BoxCollider2D>().isTrigger = true;
                var coin = obj.AddComponent<Pickup>(); coin.room = room; coin.coinId = i; room.coins[i] = coin;
            }
            var enemy = Shape("Red Patrol", square, new Vector2(-1, -2), new Vector2(0.8f, 0.8f), Color.red);
            var enemyBody = enemy.AddComponent<Rigidbody2D>(); enemyBody.bodyType = RigidbodyType2D.Kinematic; enemyBody.useFullKinematicContacts = true;
            enemy.AddComponent<BoxCollider2D>().isTrigger = true;
            room.patrol = enemy.AddComponent<Patrol>(); room.patrol.room = room;
            EditorSceneManager.SaveScene(scene, scenePath);
            var scenes = EditorBuildSettings.scenes.Where(s => s.path != scenePath).ToList();
            scenes.Add(new EditorBuildSettingsScene(scenePath, true));
            EditorBuildSettings.scenes = scenes.ToArray();
            Selection.activeGameObject = room.gameObject;
            Debug.Log("Coin Room source scene created. Editor/Play Mode/build acceptance must be checked on this machine.");
        }
        private static void ConfigureTexture(string path, float pixelsPerUnit)
        {
            var importer = (TextureImporter)AssetImporter.GetAtPath(path);
            importer.textureType = TextureImporterType.Sprite;
            importer.spriteImportMode = SpriteImportMode.Single;
            importer.spritePixelsPerUnit = pixelsPerUnit;
            importer.filterMode = FilterMode.Point;
            importer.textureCompression = TextureImporterCompression.Uncompressed;
            importer.isReadable = true;
            importer.mipmapEnabled = false;
            importer.SaveAndReimport();
        }
        private static GameObject Shape(string name, Sprite sprite, Vector2 position, Vector2 size, Color color)
        {
            var obj = new GameObject(name);
            obj.transform.position = position;
            obj.transform.localScale = new Vector3(size.x, size.y, 1);
            var renderer = obj.AddComponent<SpriteRenderer>(); renderer.sprite = sprite; renderer.color = color;
            return obj;
        }
        private static void Wall(string name, Vector2 position, Vector2 size, Sprite square)
        {
            Shape(name, square, position, size, new Color(0.3f, 0.35f, 0.5f)).AddComponent<BoxCollider2D>();
        }
    }
}