/// <summary>
/// 從YtCfg字串解析inner context資料供取得留言使用
/// </summary>
/// <param name="strCfg"></param>
/// <returns></returns>
private InnerTubeContextData ParseInnerContextData(string strCfg)
{
InnerTubeContextData ret = new InnerTubeContextData();
dynamic jsonData = JsonConvert.DeserializeObject <Dictionary <String, dynamic> >(strCfg);
ret.INNERTUBE_API_KEY = Convert.ToString(JsonHelper.TryGetValue(jsonData, "INNERTUBE_API_KEY", ""));
ret.context.clickTracking.clickTrackingParams = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.clickTracking.clickTrackingParams", ""));
ret.context.request.useSsl = Convert.ToBoolean(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.request.useSsl", false));
ret.context.client.browserName = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.browserName", ""));
ret.context.client.browserVersion = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.browserVersion", ""));
ret.context.client.clientFormFactor = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.clientFormFactor", ""));
ret.context.client.clientName = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.clientName", ""));
ret.context.client.clientVersion = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.clientVersion", ""));
ret.context.client.deviceMake = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.deviceMake", ""));
ret.context.client.deviceModel = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.deviceModel", ""));
ret.context.client.gl = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.gl", ""));
ret.context.client.hl = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.hl", ""));
ret.context.client.originalUrl = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.originalUrl", ""));
ret.context.client.osName = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.osName", ""));
ret.context.client.osVersion = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.osVersion", ""));
ret.context.client.platform = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.platform", ""));
ret.context.client.remoteHost = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.remoteHost", ""));
ret.context.client.userAgent = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.userAgent", ""));
ret.context.client.visitorData = Convert.ToString(JsonHelper.TryGetValueByXPath(jsonData, "INNERTUBE_CONTEXT.client.visitorData", ""));
return(ret);
}
/// <summary>
/// 取得第一次訪問的cookie資料，並在html中取出ytcfg資料與window["ytInitialData"] 後方的json code，並解析出continuation
/// </summary>
/// <param name="liveChatUrl">聊天室位址</param>
/// <returns>回傳continuation參數值</returns>
private List <CommentData> ParseLiveChatHtml(String liveChatUrl, ref String continuation)
{
String htmlContent = "";
List <CommentData> initComments = new List <CommentData>();
RaiseStatusChanged(CommentLoaderStatus.GetLiveChatHtml);
CookieContainer cc = new CookieContainer();
var handler = new HttpClientHandler
{
UseCookies = true,
CookieContainer = cc,
};
//取得HTML內容
using (HttpClient client = new HttpClient(handler))
{
try
{
client.DefaultRequestHeaders.Add("User-Agent", @"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:59.0) Gecko/20100101 Firefox/59.0");
htmlContent = client.GetStringAsync(liveChatUrl).Result;
_cookieContainer = handler.CookieContainer;
}
catch (Exception e)
{
Debug.WriteLine(String.Format("[ParseLiveChatHtml] 無法取得聊天室HTML內容. Excetion:{0}", e.Message));
RaiseError(CommentLoaderErrorCode.CanNotGetLiveChatHtml, e.Message);
return(null);
}
}
//解析YtCfg
RaiseStatusChanged(CommentLoaderStatus.ParseYtCfgData);
string strCfg = ParseYtCfg(htmlContent);
if (strCfg == null)
{
Debug.WriteLine(String.Format("[ParseLiveChatHtml] 無法解析YtCfg. HTML content:{0}", htmlContent));
RaiseError(CommentLoaderErrorCode.CanNotParseYtCfg, htmlContent);
return(null);
}
//解析inner context data
_innerContextData = ParseInnerContextData(strCfg);
//解析HTML
RaiseStatusChanged(CommentLoaderStatus.ParseLiveChatHtml);
Match match = Regex.Match(htmlContent, "window\\[\"ytInitialData\"\\] = ({.+});\\s*</script>", RegexOptions.Singleline);
if (!match.Success)
{
Debug.WriteLine(String.Format("[ParseLiveChatHtml] 無法解析HTML. HTML content:{0}", htmlContent));
RaiseError(CommentLoaderErrorCode.CanNotParseLiveChatHtml, htmlContent);
return(null);
}
//解析json data
String ytInitialData = match.Groups[1].Value;
dynamic jsonData;
try
{
jsonData = JsonConvert.DeserializeObject <Dictionary <String, dynamic> >(ytInitialData);
var data = jsonData["contents"]["liveChatRenderer"]["continuations"][0]["invalidationContinuationData"];
if (data == null)
{
data = jsonData["contents"]["liveChatRenderer"]["continuations"][0]["timedContinuationData"];
}
continuation = Convert.ToString(JsonHelper.TryGetValue(data, "continuation", ""));
_innerContextData.continuation = continuation;
var actions = jsonData["contents"]["liveChatRenderer"]["actions"];
initComments = ParseComment(actions);
}
catch (Exception e)
{
Debug.WriteLine(String.Format("[ParseLiveChatHtml] 無法解析json data:{0}", e.Message));
RaiseError(CommentLoaderErrorCode.CanNotParseLiveChatHtml, ytInitialData);
return(null);
}
return(initComments);
}
