added backpointer of chat state to user and procedure.

chatState.go

@@ -10,6 +10,11 @@ import (
 
 //chat state that we might be use for collecting infomation from user
 type chatState struct {
+	//back pointer style information
+	OpenID    string `json:"OpenID"`    //whom is this belongs to
+	Procedure string `json:"Procedure"` //which procedure this belongs to
+
+	//real state information
 	Name   string   `json:"Name"`   //state name
 	Expire int32    `json:"Expire"` //unix timestamp  when this state expire
 	Send   struct { //anything we need to send?
@@ -94,19 +99,38 @@ func startProcedure(openID, procedure string) (err error) {
 
 	//do the real concret work for processing the state
 	err = processProcedureState(state)
+
 	return
 }
 
-//resume a previous Procedure
-func resumeProcedure(procedure string) {
-
+//resume a previous Procedure's state
+func resumeProcedure(openID, procedure string) (err error) {
+	state, err := getCurrentState(openID, procedure)
+	if err != nil {
+		return
+	}
+	return processProcedureState(state)
 }
 
-func stopProcedure(procedure string) {
-
+//finish a procedure, regardless its been finished or not
+//normally not finished normally
+func stopProcedure(openID, procedure string) {
+	path := getProcedurePath(openID, procedure)
+	os.Remove(path)
+	log.Println("Clearing [" + openID + "] @ [" + procedure + "]")
 }
 
 func processProcedureState(state chatState) (err error) {
+	//send what we need to send
+	if isExpired(state.Expire) {
+		return errors.New("State has expired " + stae.Name)
+	}
+	//mark we have sent.
+
+	//do we need input? waiting for input
+
+	//if not, what is next state
+
 	log.Println(state)
 	return
 }