using Aliyun.OSS;

using CloudGaming.AppConfigModel;

using NPOI.HPSF;

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.AccessControl;
using System.Text;
using System.Threading.Tasks;

namespace CloudGaming.Code.Aliyun
{
    /// <summary>
    /// 阿里云扩展
    /// </summary>
    public static class AliyunConfigExtend
    {
        private static readonly Dictionary<string, string> MimeTypes = new Dictionary<string, string>(StringComparer.InvariantCultureIgnoreCase)
    {
        { ".txt", "text/plain" },
        { ".html", "text/html" },
        { ".htm", "text/html" },
        { ".css", "text/css" },
        { ".js", "application/javascript" },
        { ".json", "application/json" },
        { ".xml", "application/xml" },
        { ".jpg", "image/jpeg" },
        { ".jpeg", "image/jpeg" },
        { ".png", "image/png" },
        { ".gif", "image/gif" },
        { ".bmp", "image/bmp" },
        { ".webp", "image/webp" },
        { ".svg", "image/svg+xml" },
        { ".pdf", "application/pdf" },
        { ".doc", "application/msword" },
        { ".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document" },
        { ".xls", "application/vnd.ms-excel" },
        { ".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" },
        { ".ppt", "application/vnd.ms-powerpoint" },
        { ".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation" },
        { ".zip", "application/zip" },
        { ".rar", "application/x-rar-compressed" },
        { ".7z", "application/x-7z-compressed" },
        { ".mp3", "audio/mpeg" },
        { ".wav", "audio/wav" },
        { ".mp4", "video/mp4" },
        { ".avi", "video/x-msvideo" },
        { ".mov", "video/quicktime" }
    };
        public static string GetContentType(string fileName)
        {
            if (string.IsNullOrEmpty(fileName))
                throw new ArgumentException("文件名称不能为空", nameof(fileName));

            string extension = System.IO.Path.GetExtension(fileName);

            if (MimeTypes.TryGetValue(extension, out string contentType))
            {
                return contentType;
            }

            return "application/octet-stream"; // 默认值
        }

        /// <summary>
        /// 获取上传地址
        /// </summary>
        /// <param name="aliyunOssConfig">配置</param>
        /// <param name="objectName">上传图片名称</param>
        /// <param name="contentType">上传类型</param>
        /// <returns></returns>
        public static string GeneratePresignedUri(this AliyunConfig aliyunOssConfig, string objectName)
        {

            var contentType = GetContentType(objectName);

            return GeneratePresignedUri(aliyunOssConfig, objectName, contentType);
        }
        /// <summary>
        /// 获取上传地址
        /// </summary>
        /// <param name="aliyunOssConfig">配置</param>
        /// <param name="objectName">上传图片名称</param>
        /// <param name="contentType">上传类型</param>
        /// <returns></returns>
        public static string GeneratePresignedUri(this AliyunConfig aliyunOssConfig, string objectName, string contentType)
        {
            if (aliyunOssConfig == null)
            {
                throw new NullReferenceException("AliyunOssConfig不能为空");
            }
            // 创建OSSClient实例
            var ossClient = new OssClient(aliyunOssConfig.EndPoint, aliyunOssConfig.AccessKeyId, aliyunOssConfig.AccessKeySecret);

            // 生成签名URL
            var generatePresignedUriRequest = new GeneratePresignedUriRequest(aliyunOssConfig.BucketName, objectName, SignHttpMethod.Put)
            {
                Expiration = DateTime.Now.AddHours(1),
                ContentType = contentType
            };
            var signedUrl = ossClient.GeneratePresignedUri(generatePresignedUriRequest);

            return signedUrl.ToString();
        }
    }
}