I want to create a chatbot with Dialogflow and Google Assistant along with Google Transactions API for enabling a user to order some items. For now my agent contains the following four intents:
Default Welcome Intent(text response: Hello, do you want to buy a chocolate box?)Default Fallback IntentInt3(training phrase: Yes, I want, fulfilment: enabled webhook)Int4(event:actions_intent_TRANSACTION_DECISION, fulfilment: enabled webhook)
I am using Dialogflow Json instead of Node.js to connect my agent with Transactions API. I want to build a cart and an order for the user by using finally that the user meets the transaction requirements by using the actions.intent.TRANSACTION_DECISION action of Google actions. For this reason, following Google docs, when Int3 is triggered I am using a webhook which connect Google Assistant my back-end which sends back the following json (to trigger actions.intent.TRANSACTION_DECISION) :
{
"payload": {
"google": {
"expectUserResponse": true,
"isSsml": false,
"noInputPrompts": [],
"systemIntent": {
"data": {
"@type": "type.googleapis.com/google.actions.v2.TransactionDecisionValueSpec",
"orderOptions": {
"requestDeliveryAddress": false
},
"paymentOptions": {
"actionProvidedOptions": {
"displayName": "VISA-1234",
"paymentType": "PAYMENT_CARD"
}
},
"proposedOrder": {
"cart": {
"lineItems": [
{
"id": "My Memoirs",
"name": "memoirs_1",
"price": {
"amount": {
"currencyCode": "USD",
"nanos": 990000000,
"units": 3
},
"type": "ACTUAL"
},
"quantity": 1,
"subLines": [
{
"note": "Note from the author"
}
],
"type": "REGULAR"
},
{
"id": "Memoirs of a person",
"name": "memoirs_2",
"price": {
"amount": {
"currencyCode": "USD",
"nanos": 990000000,
"units": 5
},
"type": "ACTUAL"
},
"quantity": 1,
"subLines": [
{
"note": "Special introduction by author"
}
],
"type": "REGULAR"
},
{
"id": "Their memoirs",
"name": "memoirs_3",
"price": {
"amount": {
"currencyCode": "USD",
"nanos": 750000000,
"units": 15
},
"type": "ACTUAL"
},
"quantity": 1,
"type": "REGULAR"
},
{
"id": "Our memoirs",
"name": "memoirs_4",
"price": {
"amount": {
"currencyCode": "USD",
"nanos": 490000000,
"units": 6
},
"type": "ACTUAL"
},
"quantity": 1,
"type": "REGULAR"
}
],
"merchant": {
"id": "book_store_1",
"name": "Book Store"
},
"notes": "The Memoir collection",
"otherItems": []
},
"id": "<UNIQUE_ORDER_ID>",
"otherItems": [
{
"id": "Subtotal",
"name": "subtotal",
"price": {
"amount": {
"currencyCode": "USD",
"nanos": 220000000,
"units": 32
},
"type": "ESTIMATE"
},
"type": "SUBTOTAL"
},
{
"id": "Tax",
"name": "tax",
"price": {
"amount": {
"currencyCode": "USD",
"nanos": 780000000,
"units": 2
},
"type": "ESTIMATE"
},
"type": "TAX"
}
],
"totalPrice": {
"amount": {
"currencyCode": "USD",
"nanos": 0,
"units": 35
},
"type": "ESTIMATE"
}
}
},
"intent": "actions.intent.TRANSACTION_DECISION"
}
}
}
}
Notice that I am essentially copying-pasting the jsons from Google docs.
However, Int4 is not triggered which means that actions.intent.TRANSACTION_DECISION is also not triggered .
I only get onn Google Assistant (when Int3 is triggered and the above json is sent as a response from my back-end) the following message/error:
Sorry, something went wrong. Please try again later.
Therefore, I cannot really understand what is wrong in my json and why actions.intent.TRANSACTION_DECISION is not triggered.
Why actions.intent.TRANSACTION_DECISION is not triggered? Is there any undetected problem with the json above?
I do not know if my problem has anything to do with this: Actions on Google returns in simulator "We're sorry, but something went wrong. Please try again.". However, I tested all the possible solutions from this link and nothing so far really worked for me.
Also, keep in mind that I have already triggered all the other built-in intents of Google Transactions API (actions.intent.TRANSACTION_REQUIREMENTS_CHECK, actions.intent.DELIVERY_ADDRESS, actions.intent.SIGN_IN) and they all work fine with my agent/app. For some reason, only actions.intent.TRANSACTION_DECISION returns this error (Sorry, something went wrong. Please try again later.) to me.
