Replace dialogflow with nlp.js (as option or entirely)

[dragfyre]

Along with API changes, this requires replacing access tokens with keys

Ideally https://github.com/mishushakov/dialogflow-web-v2 would also be added.

Conversely, we might look into using https://www.npmjs.com/package/node-nlp instead of Dialogflow .

• Replace apiai with (updated) dialogflow
• Option to replace dialogflow with nlp.js

[brettz9]

It looked like they (nlp.js) had a number of dependencies in package.json where they split up the functionality. See the dependencies tab of https://www.npmjs.com/package/node-nlp to get links to the repos. Would it be relevant to investigate those also if you have not?

Re: converting from Dialogflow to nlp.js, I saw some for converting the "model" of Dialogflow--though GitHub-searching didn't turn up "entities": https://github.com/jpruden92/dialogflow-nlp-to-nlpjs or a fork https://github.com/levelbots/dialogflow-to-nlpjs

The main page of nlp.js mentioned entities fairly heavily in these subpages. Not sure if relevant:

• https://github.com/axa-group/nlp.js/blob/master/docs/v3/ner-manager.md
• https://github.com/axa-group/nlp.js/blob/master/docs/v3/builtin-entity-extraction.md

In looking at your entities files to see what was significant, I noticed "synonyms" jumping out, and it seems there is an issue filed for that (if you wanted to subscribe): axa-group/nlp.js#40

Not sure if any of that surface-level examination turns up anything for ya.

[brettz9]

Not sure if you want to keep this open for the possibility of nlp but the move to Dialogflow is now complete on the main branch per commit 1d2f44c . Plan to give instructions on credentials shortly.

[dragfyre]

Although the dialogflow migration is done, I think we can keep this issue open to discuss the possibility of moving away from third-party services altogether—seems like @sjscotti's workaround for the quote function may relate to that.