Firebase session for Telegraf

Firebase powered session middleware for Telegraf.

Installation

``js
$ npm install telegraf-session-firebase
`

Example

`js
const Telegraf = require('telegraf')
const firebaseSession = require('telegraf-session-firebase')
const admin = require('firebase-admin')

const serviceAccount = require('path/to/serviceAccountKey.json')
admin.initializeApp({
credential: admin.credential.cert(serviceAccount),
databaseURL: 'https://.firebaseio.com'
})
const database = admin.database()

const bot = new Telegraf(process.env.BOT_TOKEN)
bot.use(firebaseSession(database.ref('sessions')))
bot.on('text', (ctx, next) => {
ctx.session.counter = ctx.session.counter || 0
ctx.session.counter++
return next()
})
bot.hears('/stats', ({ reply, session, from }) => reply(${session.counter} messages from ${from.username}))
bot.startPolling()

`

API

$3

* property: context property name (default: session)
* getSessionKey: session key resolver function (default: (ctx) => any)

Default implementation of getSessionKey:

`js
function getSessionKey(ctx) {
if (!ctx.from || !ctx.chat) {
return
}
return ${ctx.from.id}/${ctx.chat.id}
}
`

$3

To destroy a session simply set it to null.

`js
bot.on('text', (ctx) => {
ctx.session = null
})

``