using LMS.Repository.DB;
using LMS.Repository.FileUpload;
using Qiniu.Http;
using static LMS.Repository.DTO.FileUploadDto;

namespace LMS.Tools.FileTool
{
    public interface IQiniuService
    {
        /// <summary>
        /// 检查文件的字节大小是否符合要求
        /// </summary>
        /// <param name="fileBytes"></param>
        /// <returns></returns>
        public Task<UploadResult> CheckFileBytesSize(byte[] fileBytes);

        /// <summary>
        /// 生成七牛云上传的路径 key
        /// </summary>
        /// <param name="userId"></param>
        /// <param name="fileName"></param>
        /// <returns></returns>
        string GenerateFileKey(long userId, string fileName);

        /// <summary>
        /// 计算文件的 SHA1 哈希值
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        string ComputeSHA1Hash(byte[] data);

        /// <summary>
        /// 获取七牛云的配置 用于上传图片
        /// </summary>
        /// <returns></returns>
        Task<QiniuSettings> InitQiniuSetting();

        /// <summary>
        /// 生成七牛的上传凭证
        /// </summary>
        /// <param name="qiniuSettings"></param>
        /// <returns></returns>
        string GeneratePolicy(QiniuSettings qiniuSettings);

        /// <summary>
        /// 将 byte 数组上传到七牛云
        /// </summary>
        /// <param name="fileBytes"></param>
        /// <returns></returns>
        Task<FileUploads> UploadFileToQiNiu(byte[] fileBytes, long userId, string fileName, string fileKey);

        /// <summary>
        /// 构建文件的访问 URL
        /// </summary>
        /// <param name="domain"></param>
        /// <param name="fileKey"></param>
        /// <returns></returns>
        string BuildFileUrl(string domain, string fileKey);
    }
}