package starnet

// SetTraceHooks 设置请求 trace 回调。
func (r *Request) SetTraceHooks(hooks *TraceHooks) *Request {
	return r.applyMutation(mutateTraceHooks(hooks))
}

// SetTraceRecorder 设置请求级 trace 摘要记录器。
// 记录器会保存最近一次已完成请求的摘要；若多个请求共享同一个记录器，则以最后一次完成的请求为准。
func (r *Request) SetTraceRecorder(recorder *TraceRecorder) *Request {
	return r.applyMutation(mutateTraceRecorder(recorder))
}

// TraceSummary 返回当前请求最近一次执行的 trace 摘要快照。
func (r *Request) TraceSummary() *TraceSummary {
	if r == nil || r.lastTraceSummary == nil {
		return nil
	}
	summary := cloneTraceSummary(*r.lastTraceSummary)
	return &summary
}

func (r *Request) startTraceExecution() {
	if r == nil {
		return
	}
	r.traceRun = nil
	if r.traceRecorder == nil {
		return
	}
	r.traceRun = r.traceRecorder.forkExecution()
	if r.traceRun != nil {
		r.traceRun.startRequest()
	}
}

func (r *Request) finishTraceExecution(resp *Response) {
	if r == nil {
		return
	}
	if r.traceRun == nil {
		r.lastTraceSummary = nil
		if resp != nil {
			resp.traceSummary = nil
		}
		return
	}

	summary := r.traceRun.Summary()
	r.lastTraceSummary = cloneTraceSummaryPtr(summary)
	r.traceRecorder.publishSummary(summary)
	if resp != nil {
		resp.traceSummary = cloneTraceSummaryPtr(summary)
	}
	r.traceRun = nil
}