using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Google.FlatBuffers;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;
using SCHALE.GameServer.Services;
using Serilog;
using Serilog.Extensions.Logging;
using SCHALE.Common;
using SCHALE.Common.Crypto;
using SCHALE.Common.FlatData;
using Form = System.Windows.Forms.Form;

namespace SCHALE.Toolbox.Forms
{
    public partial class ExcelEditorForm : Form
    {
        private readonly ExcelTableService _tableService;
        private readonly ILogger<ExcelEditorForm> _logger;
        private string _excelDirectory;

        public ExcelEditorForm()
        {
            InitializeComponent();

            var logFactory = new SerilogLoggerFactory(Log.Logger);
            _logger = logFactory.CreateLogger<ExcelEditorForm>();
            _tableService = new ExcelTableService(logFactory.CreateLogger<ExcelTableService>());

            _excelDirectory = Path.Join(Path.GetDirectoryName(AppContext.BaseDirectory), "Resources/excel");
            _logger.LogInformation("Set excel directory to {excelDir}", _excelDirectory);
        }

        private void ExcelEditorForm_Load(object sender, EventArgs e)
        {

        }

        private async void downloadButton_Click(object sender, EventArgs e)
        {
            this.Enabled = false;
            await ExcelTableService.LoadExcels(_excelDirectory);
            _logger.LogInformation("Excel downloaded");
            this.Enabled = true;
        }

        private void reloadButton_Click(object sender, EventArgs e)
        {
            ReloadExcels();
        }

        private void tableListView_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void ReloadExcels()
        {
            var assembly = Assembly.GetAssembly(typeof(AcademyFavorScheduleExcelTable))!;
            var types = assembly.GetTypes().Where(
                t => t.IsAssignableTo(typeof(IFlatbufferObject)) && t.Name.EndsWith("ExcelTable"));
            var validTypes = new List<Type>();

            foreach (var t in types)
            {
                var filePath = Path.Join(_excelDirectory, $"{t.Name.ToLower()}.bytes");
                var fbPath = Path.Join(_excelDirectory, $"{t.Name.ToLower()}.fb");
                if (!File.Exists(filePath)) continue;
                if (File.Exists(fbPath))
                {
                    validTypes.Add(t);
                    continue;
                }

                var bytes = File.ReadAllBytes(filePath);
                TableEncryptionService.XOR(t.Name, bytes);

                // save decrypted
                File.WriteAllBytes(fbPath, bytes);
                _logger.LogInformation("Decrypted excel table {TableName}", t.Name);

                // save json
                var inst = t.GetMethod($"GetRootAs{t.Name}", BindingFlags.Static | BindingFlags.Public,
                    [typeof(ByteBuffer)])!.Invoke(null, [new ByteBuffer(bytes)]);
                var obj = t.GetMethod("UnPack", BindingFlags.Instance | BindingFlags.Public)!.Invoke(inst, null);
                var jsonPath = Path.Join(_excelDirectory, $"{t.Name.ToLower()}.json");
                File.WriteAllText(jsonPath, JsonConvert.SerializeObject(obj, Formatting.Indented, new StringEnumConverter()));
            }

            tableListView.Items.Clear();
            itemListView.Items.Clear();

            foreach (var t in validTypes)
            {
                var item = new ListViewItem(t.Name);
                item.Tag = t;
                tableListView.Items.Add(item);
            }
            tableListView.Columns[0].Width = -1;

        }
    }
}