using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
using Bowin.Common.Utility;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace YLShipBuildLandMap.Web.Controllers.SystemSetting
{
    [Route("api/systemsetting/[controller]")]
    [ApiController]
    public class ExcelController : ControllerBase
    {
        [HttpGet]
        public ActionResult Get(string fileName, string fileNewName)
        {
            fileNewName = HttpUtility.UrlDecode(fileNewName);

            if (fileName.Contains("../") || fileName.Contains("..\\"))
            {
                throw new Exception("不支持返回上级目录");
            }

            var extName = Path.GetExtension(fileName);
            if (extName != ".xls" && extName != ".xlsx")
            {
                throw new Exception("只能下载Excel文件");
            }

            var physicalPath = Path.Combine(Configuration.Current.AppSettings.TemplatePhysicalPath, fileName);
            var pdfStream = System.IO.File.Open(physicalPath, System.IO.FileMode.Open);

            var data = new byte[pdfStream.Length];
            pdfStream.Read(data);
            pdfStream.Close();
            var memoryStream = new MemoryStream(data);

            System.IO.File.Delete(physicalPath);

            return File(memoryStream, "application/vnd.ms-excel", fileNewName, false);
        }
    }
}