using Microsoft.AspNetCore.Builder;
using System;
using System.IO;
using System.Reflection;

namespace JingGong.Abp.Print.GoDEX
{
    public static class PrintExtension
    {
        public static void AddGoDEX(this IApplicationBuilder applicationBuilder)
        {
            //注：docker运行时需添加环境变量：#ENV LD_LIBRARY_PATH=/app/libx64:$LD_LIBRARY_PATH
            ExtractResourceToFile("JingGong.Abp.Print.GoDEX.x64lib.libezio.so.1.1.0", "libx64/libezio.so.1.1.0");
            ExtractResourceToFile("JingGong.Abp.Print.GoDEX.x64lib.libttf_x64.so", "libx64/libttf_x64.so");
            ExtractResourceToFile("JingGong.Abp.Print.GoDEX.x64lib.libusb-1.0.so.0.3.0", "libx64/libusb-1.0.so.0");

            //临时解决环境变量未生效问题
            ExtractResourceToFile("JingGong.Abp.Print.GoDEX.x64lib.libezio.so.1.1.0", "libezio.so.1.1.0");
            ExtractResourceToFile("JingGong.Abp.Print.GoDEX.x64lib.libttf_x64.so", "libttf_x64.so");
            ExtractResourceToFile("JingGong.Abp.Print.GoDEX.x64lib.libusb-1.0.so.0.3.0", "libusb-1.0.so.0");
        }

        /// <summary>
        /// 释放资源文件至本地文件
        /// </summary>
        /// <param name="resourceName"></param>
        /// <param name="fileFullName"></param>
        internal static void ExtractResourceToFile(string resourceName, string fileFullName)
        {
            using (var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName))
            {
                if (stream == null)
                    return;

                try
                {
                    var dir = Path.GetDirectoryName(fileFullName);

                    if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
                        Directory.CreateDirectory(dir);

                    using (FileStream fileStream = new FileStream(fileFullName, FileMode.Create, FileAccess.Write))
                    {
                        stream.CopyTo(fileStream);
                    }
                }
                catch
                {
                    Console.WriteLine($"写入{fileFullName}失败");
                }
            }
        }
    }
}