using System;
using System.IO;
using System.Threading.Tasks;
using BetterEN5.Services.Conversion;

namespace BetterEN5.Services
{
    public class CustomConversionService : IConversionService
    {
        private readonly ConversionEngine _engine = new();

        public async Task<string> ConvertPptxToEnbxAsync(string pptxPath)
        {
            return await _engine.ConvertPptxToEnbxAsync(pptxPath);
        }

        public async Task<string> ConvertEnbxToPptxAsync(string enbxPath)
        {
            return await _engine.ConvertEnbxToPptxAsync(enbxPath);
        }

        public Task FixConversionErrorsAsync()
        {
            _engine.FixConversionErrors();
            return Task.CompletedTask;
        }

        public async Task<string> BatchConvertAsync(string[] inputPaths, string outputDir, bool toEnbx)
        {
            int success = 0;
            int failed = 0;

            if (!Directory.Exists(outputDir))
                Directory.CreateDirectory(outputDir);

            foreach (var input in inputPaths)
            {
                try
                {
                    var fileName = Path.GetFileNameWithoutExtension(input);
                    var ext = toEnbx ? ".enbx" : ".pptx";
                    var output = Path.Combine(outputDir, fileName + ext);

                    if (toEnbx)
                        await _engine.ConvertPptxToEnbxAsync(input);
                    else
                        await _engine.ConvertEnbxToPptxAsync(input);

                    success++;
                }
                catch
                {
                    failed++;
                }
            }

            return $"批量转换完成，成功: {success}，失败: {failed}";
        }
    }
}