Save chat context on database

[francestu96]

I need to create a queue of all clients who perform a certain action with my bot.
This queue need to be persistent and thus, I thought to store them in a database.

However, how can I store the entire context on a database? I need the context since I need to call the context functions (i.e. .reply(), .deleteMessage(), .wizard.next(), etc...).

I attach an (hopefully) quite explanatory image of the problem.

How can I handle this?
Thank you

[MKRhere]

You can safely store the contents of ctx.update which will always be a valid JSON as received from Telegram. You can construct it back into a context by doing new Context(update).

const update = ctx.update;
// store update object in DB

// later, retrieve it back
const update = await fetchUpdateFromDbSomehow();
const ctx = new Context(update);

[francestu96]

Oh ok thank you so much, it was exactly what I was looking for!

[watate]

Hey @francestu96 was wondering how you were able to do this!

I tried reconstructing ctx from both ctx.update and ctx itself but I can't use any methods on the reconstructed ctx (ctx.reply doesn't work for example).

To store ctx and ctx.json, at first I did JSON.stringify but because ctx is a Circular JSON it didn't work so then I tried flatten.stringify which allowed me to get back ctx or reconstruct a new ctx. But ctx.reply didn't work.

However, when I try to reconstruct ctx without having it go through flatted.stringify and flagged.parse, ctx.reply works perfectly.

[MKRhere]

You should store ctx.update (it's a plain object; stringify if needed), and parse it back before passing to new Context.

[watate]

Hi @MKRhere thanks for the reply! I did JSON.stringify => JSON.parse and also tried flatted.stringify => flatted.parse but ctx.reply didn't work for me. I'll try to see if I can write something to show my code when I'm back in 2-3 weeks! Thanks again.