entry.messaging.forEach(event => {
if (event.message && !event.message.is_echo) {
const sender = event.sender.id
// We retrieve the user's current session, or create one if it doesn't exist
// This is needed for our bot to figure out the conversation history
const sessionId = findOrCreateSession(sender)
if (event.message && event.message.quick_reply) {
messenger._handleEvent('quickReply', event)
} else if (event.message && event.message.text) {
// fwd the message to the Wit.ai Bot Engine
wit.runActions(
sessionId, // the user's current session
text, // the user's message
sessions[sessionId].context // the user's current session state
).then((context) => {
// Our bot did everything it has to do.
console.log('Waiting for next user messages')
// Updating the user's current session state
sessions[sessionId].context = context
})
.catch((err) => {
console.error('Oops! Got an error from Wit: ', err.stack || err)
})
// also handle messages in the server
messenger._handleEvent('message', event)
} else if (event.message && event.message.attachments) {
event.message.attachments.forEach(attachment => {
messenger.sendApiMessage(sender, { text: 'Sorry I can only process text messages for now.' }, function (err) {
if (err) console.error('Attachment received. unsupported behaviour.')
})
// also handle attachments in the server
messenger._handleEvent(attachment.type, event) // image, audio, video, file or location
})
} else if (event.optin) {
messenger._handleEvent('authentication', event)
} else if (event.delivery) {
messenger._handleEvent('delivery', event)
} else if (event.postback) {
messenger._handleEvent('postback', event)
} else if (event.read) {
messenger._handleEvent('read', event)
} else if (event.account_linking && event.account_linking.status === 'linked') {
messenger._handleEvent('accountLinked', event)
} else if (event.account_linking && event.account_linking.status === 'unlinked') {
messenger._handleEvent('accountUnlinked', event)
} else {
console.error('Webhook received an unknown messaging event: ', JSON.stringify(event))
}
} else {
messenger._handleEvent('echoMessage', event)
}
})
event.message.attachments.forEach(attachment => {
messenger.sendApiMessage(sender, { text: 'Sorry I can only process text messages for now.' }, function (err) {
if (err) console.error('Attachment received. unsupported behaviour.')
})
// also handle attachments in the server
messenger._handleEvent(attachment.type, event) // image, audio, video, file or location
})