using System.Collections.Generic;
using System.IO;
using Newtonsoft.Json.Linq;

namespace Luneraria.EditorTools
{
    /// <summary>
    /// The facts and checks that tools/blender/lune_fbx_export.py writes next to every FBX
    /// (&lt;id&gt;.export.json). The importer reads the clip data from it; the verifier compares
    /// the imported model with the Blender side.
    /// </summary>
    public sealed class ExportReport
    {
        public readonly string Path;
        public readonly JObject Data;

        ExportReport(string path, JObject data)
        {
            Path = path;
            Data = data;
        }

        public string Id { get { return (string)Data["id"]; } }
        public string Kind { get { return (string)Data["kind"]; } }
        public bool Skinned { get { return Kind == "skinned"; } }
        public bool BlenderOk { get { return (bool)Data["ok"]; } }
        public JObject Meshes { get { return (JObject)Data["meshes"]; } }
        public JArray Clips { get { return (JArray)Data["clips"] ?? new JArray(); } }

        /// <summary>Report of an FBX asset path, or null if the model was not exported by the pipeline.</summary>
        public static ExportReport ForModel(string modelPath)
        {
            string path = System.IO.Path.ChangeExtension(modelPath, ".export.json");
            if (!File.Exists(path))
                return null;
            return new ExportReport(path, JObject.Parse(File.ReadAllText(path)));
        }

        public static IEnumerable<string> AllModels(string root)
        {
            foreach (string path in Directory.GetFiles(root, "*.export.json", SearchOption.AllDirectories))
                yield return path.Replace('\\', '/').Replace(".export.json", ".fbx");
        }
    }
}