/// <summary>
/// 从本地和网络查找答案
/// 并转发给对应的ws客户端
/// </summary>
/// <param name="session">会话</param>
/// <returns></returns>
private static async Task SearchAnswerAsync(Session session)
{
session.utilDecodeRequest();
session.utilDecodeResponse();
var requestBody = Encoding.UTF8.GetString(session.RequestBody);
var responseBody = Encoding.UTF8.GetString(session.ResponseBody);
var kingQuestion = KingQuestion.Parse(responseBody);
if (kingQuestion == null || kingQuestion.IsValidate() == false)
{
return;
}
var beginTime = DateTime.Now;
var data = await SearchHistoryDataAsync(session, withAnswer);
const double offsetSecondes = 3.7d;
var delay = beginTime.AddSeconds(offsetSecondes).Subtract(DateTime.Now);
var notifyData = new WsNotifyData <WsGameAnswer>
{
Cmd = WsCmd.GameAnser,
Data = new WsGameAnswer
{
SearchResult = data.SearchResult,
GameDelayMSeconds = (int)delay.TotalMilliseconds
}
};
WsNotifyByClientIP(notifyData, session.clientIP);
if (withAnswer == true)
{
var qData = data.QuestionData;
if (data.SearchResult.Best != null)
{
var index = data.SearchResult.Best.Index;
qData.quiz = qData.quiz + $" [{(char)('A' + index)}]";
qData.options[index] = qData.options[index] + "[√]";
}
var q = new KingQuestion {
data = qData
};
var json = JsonConvert.SerializeObject(q);
session.utilSetResponseBody(json);
}
}
/// <summary>
/// 从本地和网络查找答案
/// 返回正确选项的索引
/// </summary>
/// <param name="session">会话</param>
/// <returns></returns>
private static int GetOptionIndex(Session session, out KingQuestion kingQuestion)
{
kingQuestion = KingQuestion.FromSession(session);
if (kingQuestion == null || kingQuestion.IsValidate() == false)
{
return(-1);
}
KingContextTable.Add(new KingContext
{
KingQuestion = kingQuestion,
KingRequest = KingRequest.FromSession(session)
});
// 找答案
return(SearchOptionIndex(kingQuestion));
}
/// <summary>
/// 从本地和网络查找答案
/// 并转发给对应的ws客户端
/// </summary>
/// <param name="session">会话</param>
/// <param name="sync">是否同步</param>
/// <returns></returns>
private static async Task <HistoryData> SearchHistoryDataAsync(Session session, bool sync)
{
session.utilDecodeRequest();
session.utilDecodeResponse();
var requestBody = Encoding.UTF8.GetString(session.RequestBody);
var responseBody = Encoding.UTF8.GetString(session.ResponseBody);
var kingQuestion = KingQuestion.Parse(responseBody);
if (kingQuestion == null || kingQuestion.IsValidate() == false)
{
return(null);
}
var kingRequest = KingRequest.Parse(requestBody);
var title = kingQuestion.data.quiz;
var beginTime = DateTime.Now;
var history = HistoryDataTable.TryGet(title);
if (history == null)
{
history = new HistoryData
{
QuestionData = kingQuestion.data,
KingRequest = KingRequest.Parse(requestBody),
SearchResult = await BaiduSearcher.SearchAsync(kingQuestion, withAnswer)
};
HistoryDataTable.TryAdd(history);
}
var data = JsonConvert.DeserializeObject <HistoryData>(JsonConvert.SerializeObject(history));
data.KingRequest = kingRequest;
data.QuestionData = kingQuestion.data;
data.SearchResult = history.SearchResult.CreateNewByQuestionData(kingQuestion.data);
return(data);
}
/// <summary>
/// 从正确的答案选项
/// </summary>
/// <param name="question">问题</param>
/// <returns></returns>
public static async Task <SearchResult> SearchAsync(KingQuestion question, bool sync)
{
// 从badidu找出原始结论
var title = question.data.quiz;
var sourceAnswer = sync ? SearchSourceAnswers(title) : await SearchSourceAnswersAsync(title);
// 各个选项和结论的匹配次数
var options = question.data.options.Select((item, i) => new OptionMatchs
{
Index = i,
Options = item,
Matchs = GetMatchCount(sourceAnswer, item)
}).ToArray();
var best = options.OrderByDescending(item => item.Matchs).FirstOrDefault();
if (title.Contains("不") || title.Contains("没"))
{
// 计算匹配次数平均值，找出和匹配次数均值差异最大的
var avg = options.Average(item => item.Matchs);
best = options.OrderByDescending(item => Math.Pow(item.Matchs - avg, 2)).FirstOrDefault();
}
var result = new SearchResult
{
Title = title,
Options = options,
Best = best
};
// 两个相同的结果，表示没有答案
if (options.Any(item => item != best && item.Matchs == best.Matchs))
{
result.Best = null;
}
return(result);
}
/// <summary>
/// 查找问题答案并保存到db
/// </summary>
/// <param name="kingQuestion">问题</param>
/// <returns></returns>
private static int SearchOptionIndex(KingQuestion kingQuestion)
{
using (var sqlLite = new SqlliteContext())
{
var quiz = kingQuestion.data.quiz;
var quizAnswer = sqlLite.QuizAnswer.FirstOrDefault(item => item.Quiz == quiz);
if (quizAnswer != null)
{
Console.WriteLine($"从db中找到记录：{Environment.NewLine}{quizAnswer}");
var answer = quizAnswer.Answer?.Trim();
return(Array.FindIndex(kingQuestion.data.options, item => item?.Trim() == answer));
}
// 搜索
var best = Searcher.Search(kingQuestion);
if (best == null)
{
Console.WriteLine($"找不到答案：{kingQuestion.data.quiz}");
return(-1);
}
if (sqlLite.QuizAnswer.Any(item => item.Quiz == quiz) == false)
{
quizAnswer = new QuizAnswer
{
Answer = best.Option,
Quiz = quiz,
OptionsJson = JsonConvert.SerializeObject(kingQuestion.data.options)
};
sqlLite.QuizAnswer.Add(quizAnswer);
sqlLite.SaveChanges();
Console.WriteLine($"保存网络答案到db：{Environment.NewLine}{quizAnswer}");
}
return(best.Index);
}
}
/// <summary>
/// 搜索问题
/// </summary>
/// <param name="question">问题</param>
/// <returns></returns>
public static BestOption Search(KingQuestion question)
{
return(searchEngine.Search(question));
}