private async Task LoadDataAsync(string identifier, string conversationId)
{
if (string.IsNullOrEmpty(identifier) || string.IsNullOrEmpty(conversationId))
{
return;
}
Map = await _storage.ReadAsync($"{MAP}:{identifier}", () => _dbContext.KnowledgeMaps.FirstOrDefault(m => m.Identifier == identifier));
MoMoBotAssert.NotNull(Map);
Steps = await _storage.ReadAsync($"{MAP}:{identifier}:{STEPS}", () => _dbContext.Steps
.Where(s => s.MapId == Map.Id)
.Select(s => new Step
{
Id = s.Id,
Function = s.Function,
TriggeredResult = s.TriggeredResult,
StepType = s.StepType,
ResultType = s.ResultType,
Key = s.Key,
NextStep = s.NextStep,
PrevStep = s.PrevStep,
Question = s.Question
}).ToList());
var data = await _storage.ReadAsync(GetCacheKey(conversationId, DATA), () => new ConversationData { Next = Steps.FirstOrDefault(s => s.StepType == StepTypes.StartNode)?.Id });
if (data != null && data.HasNext)
{
if (data.Next.Value > 0)
{
Next = Steps.FirstOrDefault(s => s.Id == data.Next.Value)?.Id;
}
else if (data.Next.Value == 0)
{
Next = null;
}
}
else
{
Next = Steps.FirstOrDefault(s => s.StepType == StepTypes.StartNode)?.Id;
}
}
public async Task <ContinueResult> ContinueAsync(string answer, string conversationId)
{
MoMoBotAssert.NotNull(Steps);
var isQuestion = true;
var step = GetCurrentStep();
if (step != null)
{
var result = (string)ExcuteMethod(step.Function, answer);
// todo : get field's value
await SetValueAsync(conversationId, step.Key, new FieldItem { Filed = "field", Value = result ?? answer });
// 分支节点
if (step.StepType == StepTypes.BranchNode)
{
var next = Steps.FirstOrDefault(s => s.PrevStep == step.Id && s.TriggeredResult == result);
if (next != null)
{
if (next.StepType == StepTypes.RunningNode)
{
var next2 = Steps.FirstOrDefault(s => s.PrevStep == next.Id);
Next = next2?.Id;
isQuestion = !(next2?.StepType == StepTypes.BranchNode);
}
else
{
throw new Exception("Error!");
}
step = next;
}
else
{
step = Steps.FirstOrDefault(s => s.StepType == StepTypes.EndNode);
}
}
// 运行节点与开始节点
else if (step.StepType == StepTypes.StartNode ||
step.StepType == StepTypes.RunningNode)
{
var next = Steps.FirstOrDefault(s => s.Id == step.NextStep);
if (next?.StepType == StepTypes.EndNode)
{
isQuestion = false;
}
Next = next?.Id;
}
// 结束节点
else
{
Next = 0;//Steps.FirstOrDefault(s => s.StepType == StepTypes.EndNode)?.Id;
}
}
await _storage.WriteAsync(new Dictionary <string, object> {
{ GetCacheKey(conversationId, DATA), new ConversationData {
Next = Next ?? 0
} }
});
return(step == null ? null : new ContinueResult
{
IsQuestion = isQuestion,
Question = step.Question
});
}