Page Comparison

...

• Prior Knowledge of Javascript.

• Prior Knowledge of NodeJS

• Prior Knowledge of REST APIs and related concepts like path parameters, headers, JSON etc.

• Prior Knowledge of PostgresSQL

• Prior Knowledge of Kafka and related concepts like Producer, Consumer, Topic, Kafka Streams  etc.

• Prior knowledge of XState library. Please refer the following link:
  https://digit-discuss.atlassian.net/wiki/spaces/DD/pages/1174634508/XState+Core+Chatbot#Basic-Introduction-to-XState

Features:

• Raise a complaint

• Provide a feedback

• Provide rating on a service.

• Notifications to citizen after receiving complaint/feedback/rating.

...

{
"message": {
"type": "text",
"input": "1"
},
"user": {
"mobileNumber": "73919044677878787878"
},
"extraInfo": {
"filestoreId": "917834811114",
"applicationId": "PB-MT-107-000754",
"comments": "User complaint comments"
}
}

...

• id : id of state,ex:- citizenComplaint

• initial : initial state, ex:- complaintCategory

• onEntry : function to be executed on entry, ex:- onEntry: assign((context, event) => { const message = dialog.get_message(messages.complaintMenu.prompt, context.user.locale); const grammer = dialog.constructContextGrammer(messages.complaintMenu.options.list, messages.complaintMenu.options.messageBundle, context.user.locale); context.grammer = grammer; dialog.sendMessage(context, message, true); })

• target : target state

• invoke : make a call to an external service

• Refer this file for an example
  https://github.com/egovernments/DIGIT-Dev/blob/CITIZEN_FEEDBACK_WEBCHAT/core-services/xstate-webchat/nodejs/src/machine/citizen-complaint.js

Modifying the chat flow

The workflow for the chatbot uses the concept of finite state machines which is developed using Xstate library Machine. The workflow implementation is present in nodejs/src/machine/. To modify the workflow, please make changes to those file.

...

Any external api calls are written as part of files present in nodejs/src/machine/service which would get called from the state machine.

Localization

The message temples are saved in the following file. In case any more messages are required to be added, it should be done in the same file.
https://github.com/egovernments/DIGIT-Dev/tree/CITIZEN_FEEDBACK_WEBCHAT/core-services/xstate-webchat/nodejs/src/machine/messages

Flow Diagram:

• High Level Diagram of chatbot interactions

...