using System;
using System.IO;
using AIGame.EditorTools;
using UnityEditor;
using UnityEngine;

/// <summary>Installs the empty camp painting and authors the placeholder explorer.</summary>
public static class BuildHomeExplorer
{
    static string Repo => Directory.GetParent(Application.dataPath).Parent.FullName;
    const string Folder = "Assets/Bundles/Characters/Explorer";
    const string Generated = @"C:\Users\Administrator\.cursor\projects\d-UD-AI-AIGame\assets\home_camp_clear.jpg";

    public static string Install()
    {
        if (EditorApplication.isPlaying) throw new Exception("Install the camp background in Edit Mode");
        string design = Path.Combine(Repo, "Doc/Design/UI/Home");
        string source = Path.Combine(design, "home_camp_source.png");
        string cast = Path.Combine(design, "home_camp_with_cast.png");
        if (!File.Exists(cast)) File.Copy(source, cast, false);
        var tex = new Texture2D(2, 2, TextureFormat.RGBA32, false);
        try
        {
            if (!tex.LoadImage(File.ReadAllBytes(Generated))) throw new Exception("Camp image failed to decode");
            byte[] png = tex.EncodeToPNG();
            File.WriteAllBytes(source, png);
            Directory.CreateDirectory(Path.Combine(Application.dataPath, "Bundles/UI/Texture/Home"));
            File.WriteAllBytes(Path.Combine(Application.dataPath, "Bundles/UI/Texture/Home/home_camp.png"), png);
        }
        finally { UnityEngine.Object.DestroyImmediate(tex); }
        AssetDatabase.ImportAsset("Assets/Bundles/UI/Texture/Home/home_camp.png");
        var importer = (TextureImporter)AssetImporter.GetAtPath("Assets/Bundles/UI/Texture/Home/home_camp.png");
        importer.textureType = TextureImporterType.Sprite;
        importer.spriteImportMode = SpriteImportMode.Single;
        importer.mipmapEnabled = false;
        importer.alphaIsTransparency = true;
        importer.textureCompression = TextureImporterCompression.Uncompressed;
        importer.filterMode = FilterMode.Bilinear;
        importer.wrapMode = TextureWrapMode.Clamp;
        var settings = new TextureImporterSettings();
        importer.ReadTextureSettings(settings);
        settings.spriteMeshType = SpriteMeshType.FullRect;
        importer.SetTextureSettings(settings);
        importer.SaveAndReimport();
        return "Installed empty camp painting " + importer.spriteImportMode;
    }

    public static string Prefab()
    {
        if (EditorApplication.isPlaying) throw new Exception("Author the explorer in Edit Mode");
        Directory.CreateDirectory(Path.Combine(Application.dataPath, "Bundles/Characters/Explorer"));
        var root = new GameObject("ExplorerSimple");
        try
        {
            root.AddComponent<HotUpdate.Gameplay.ExplorerPuppet>();
            Part(root.transform, "Body", PrimitiveType.Capsule, new Vector3(0f, 0.78f, 0f), new Vector3(0.5f, 0.42f, 0.36f), "#C4895A");
            Part(root.transform, "Head", PrimitiveType.Sphere, new Vector3(0f, 1.28f, -0.02f), Vector3.one * 0.4f, "#F3D2B3");
            Part(root.transform, "Hair", PrimitiveType.Sphere, new Vector3(0f, 1.46f, 0.04f), new Vector3(0.38f, 0.22f, 0.36f), "#6B3E2A");
            Part(root.transform, "Goggles", PrimitiveType.Cube, new Vector3(0f, 1.32f, -0.16f), new Vector3(0.34f, 0.1f, 0.08f), "#7EC8C3");
            Limb(root.transform, "LegL", new Vector3(-0.12f, 0.48f, 0f));
            Limb(root.transform, "LegR", new Vector3(0.12f, 0.48f, 0f));
            string path = Folder + "/ExplorerSimple.prefab";
            PrefabUtility.SaveAsPrefabAsset(root, path);
        }
        finally { UnityEngine.Object.DestroyImmediate(root); }
        return "Authored ExplorerSimple placeholder prefab";
    }

    public static string Hud()
    {
        if (EditorApplication.isPlaying) throw new Exception("Build the HUD in Edit Mode");
        string json = Path.Combine(Repo, "Doc/UIPrefabCreater/UI_MainHUD.json");
        var validation = JsonUIPrefabBuilder.Validate(json);
        if (!validation.Ok) throw new Exception(string.Join("\n", validation.Errors));
        if (string.IsNullOrEmpty(JsonUIPrefabBuilder.BuildFromJsonFile(json))) throw new Exception("HUD build failed");
        return "Rebuilt UI_MainHUD with the walking explorer";
    }

    static void Limb(Transform parent, string name, Vector3 hip)
    {
        var pivot = new GameObject(name);
        pivot.layer = 31;
        pivot.transform.SetParent(parent, false);
        pivot.transform.localPosition = hip;
        Part(pivot.transform, "Mesh", PrimitiveType.Capsule, new Vector3(0f, -0.24f, 0f), new Vector3(0.16f, 0.24f, 0.16f), "#3E6EA8");
        Part(pivot.transform, "Boot", PrimitiveType.Sphere, new Vector3(0f, -0.46f, -0.04f), new Vector3(0.18f, 0.12f, 0.24f), "#5C4033");
    }

    static void Part(Transform parent, string name, PrimitiveType type, Vector3 position, Vector3 scale, string color)
    {
        var go = GameObject.CreatePrimitive(type);
        go.name = name;
        go.layer = 31;
        go.transform.SetParent(parent, false);
        go.transform.localPosition = position;
        go.transform.localScale = scale;
        UnityEngine.Object.DestroyImmediate(go.GetComponent<Collider>());
        string matPath = Folder + "/" + name + ".mat";
        var material = AssetDatabase.LoadAssetAtPath<Material>(matPath);
        if (material == null)
        {
            material = new Material(Shader.Find("Universal Render Pipeline/Lit"));
            AssetDatabase.CreateAsset(material, matPath);
        }
        ColorUtility.TryParseHtmlString(color, out var parsed);
        material.SetColor("_BaseColor", parsed);
        material.SetFloat("_Smoothness", 0.25f);
        go.GetComponent<Renderer>().sharedMaterial = material;
        EditorUtility.SetDirty(material);
    }
}