/// <summary>
/// 将笔记中图片的本地地址替换成远程地址。
/// </summary>
/// <param name="noteContent"></param>
/// <returns></returns>
public string ConvertImageLocalPathToRemoteUrl(string noteContent)
{
var dom = new HtmlDocument();
dom.LoadHtml(noteContent);
var root = dom.DocumentNode;
var imgNodes = root.Descendants("img");
foreach (var img in imgNodes)
{
// Invalid imgNode tag.
if (!img.Attributes.Contains("src") || string.IsNullOrEmpty(img.Attributes["src"].Value))
{
continue;
}
var entity = ImageDao.GetImageByLocalSavePath(img.Attributes["src"].Value);
if (entity != null)
{
// Replace the image's src attribute to local path.
img.Attributes["src"].Value = entity.ImgRemoteUrl;
}
else // 在本地数据库没有找到相关图片记录说明是本地新添加的图片，则上传到服务器
{
var imgUrl = _api.UploadImage(Path.Combine("Images", Path.GetFileName(img.Attributes["src"].Value)));
img.Attributes["src"].Value = imgUrl;
}
}
return(root.InnerHtml);
}
