node-red-contrib-chatbot
Version:
REDBot a Chat bot for a full featured chat bot for Telegram, Facebook Messenger and Slack. Almost no coding skills required
86 lines (80 loc) • 2.97 kB
JavaScript
const utils = require('../lib/helpers/utils');
const _ = require('underscore');
const when = utils.when;
const RegisterType = require('../lib/node-installer');
const { isValidMessage } = require('../lib/helpers/utils');
const GlobalContextHelper = require('../lib/helpers/global-context-helper');
module.exports = function(RED) {
const registerType = RegisterType(RED);
const globalContextHelper = GlobalContextHelper(RED);
function ChatBotContext(config) {
RED.nodes.createNode(this, config);
const node = this;
globalContextHelper.init(this.context().global);
this.command = config.command;
this.fieldValue = config.fieldValue;
this.fieldType = config.fieldType;
this.fieldName = config.fieldName;
this.on('input', function(msg, send, done) {
// send/done compatibility for node-red < 1.0
send = send || function() { node.send.apply(node, arguments) };
done = done || function(error) { node.error.call(node, error, msg) };
// check if valid message
if (!isValidMessage(msg, node)) {
return;
}
// get vars
const fieldValue = node.fieldValue;
const command = utils.extractValue('string', 'command', node, msg, false);
const fieldType = utils.extractValue('string', 'fieldType', node, msg, false);
const fieldName = utils.extractValue('string', 'fieldName', node, msg, false);
const chatContext = msg.chat();
let task = when(true);
if (command === 'intent') {
let variables;
if (msg.payload != null && _.isObject(msg.payload.variables)) {
variables = msg.payload.variables;
} else if (msg.payload != null && _.isObject(msg.payload.content)) {
variables = msg.payload.content;
}
task = task.then(() => chatContext.set(variables));
} if (command === 'get') {
when(chatContext.get(fieldName))
.then(value => {
msg.payload = value;
send(msg);
done();
});
return;
} else if (command === 'delete') {
task = when(chatContext.remove(fieldName));
} else if (command === 'set') {
switch (fieldType) {
case 'str':
task = when(chatContext.set(fieldName, fieldValue));
break;
case 'num':
task = when(chatContext.set(fieldName, Number(fieldValue)));
break;
case 'bool':
task = when(chatContext.set(fieldName, /^true$/i.test(fieldValue)));
break;
case 'json':
try {
task = when(chatContext.set(fieldName, JSON.parse(fieldValue)));
} catch(e) {
done('Unable to parse json in context node');
return;
}
break;
}
}
// finally
task.then(() => {
send(msg);
done();
});
});
}
registerType('chatbot-context', ChatBotContext);
};