Botai API endpoint sample.

sample.js

// This is POST endpoint in Node.js (Express) server.
app.post(`/botai_end`, async function(request, response) {
  // Prepare template response items.
  var elements = []
  elements[elements.length]={"title": "test 1" ,"image_url":"https://e55321204fac.ngrok.io/s_3.jpg", "subtitle":"test", "default_action": {"type": "web_url","url": `https://botai.me`,"messenger_extensions": "true","webview_height_ratio": "full"},"buttons":[{"type":"web_url","url":"https://botai.me","title":"See More"}]}
  elements[elements.length]={"title": "Test 2" ,"image_url":"https://e55321204fac.ngrok.io/s_3.jpg", "subtitle":"test", "default_action": {"type": "web_url","url": `https://botai.me`,"messenger_extensions": "true","webview_height_ratio": "full"},"buttons":[{"type":"web_url","url":"https://botai.me","title":"See More"}]}
  elements[elements.length]={"title": "test 3" ,"image_url":"https://e55321204fac.ngrok.io/s_3.jpg", "subtitle":"test", "default_action": {"type": "web_url","url": `https://botai.me`,"messenger_extensions": "true","webview_height_ratio": "full"},"buttons":[{"type":"web_url","url":"https://botai.me","title":"See More"}]}
  // Template response
  template = { 
    "attachment":{
      "type":"template",
      "payload":{
        "template_type":"generic",
        "elements": elements
      }
    },
    "quick_replies":[{"content_type":"text","title":"Get Help","payload":"HELP"},{"content_type":"text","title":"Start Again","payload":"GET_STARTED"}]
  }
  // Attachment response
  att = {
    "attachment":{
      "type":"image", 
      "payload":{
        "url":"https://e55321204fac.ngrok.io/s_3.jpg", 
      }
    },
    "quick_replies":[{"content_type":"text","title":"Get Help","payload":"HELP"},{"content_type":"text","title":"Start Again","payload":"GET_STARTED"}]
  } 
  // Quick replies response
  qr1 = {"text": "Welcome {{user_first_name}}, We are excited to meet you!", "quick_replies": [
    {
      "content_type":"text",
      "title":"Get Help",
      "payload":"HELP"
    }, {
      "content_type":"text",
      "title":"See Products",
      "payload":"PRODUCTS"
    }
  ]} 
  qr2 = {"text": "These are few options", "quick_replies": [
    {
      "content_type":"text",
      "title":"Customer Service Chat",
      "payload":"CS"
    }, {
      "content_type":"text",
      "title":"Phone Call",
      "payload":"CALL"
    }
  ]} 
  qr3 = {"text": "Welcome {{user_first_name}}, Thanks for your comment!", "quick_replies": [
    {
      "content_type":"text",
      "title":"Get Help",
      "payload":"HELP"
    }, {
      "content_type":"text",
      "title":"See Products",
      "payload":"PRODUCTS"
    }
  ]} 
  // Text response
  text1 = {"text": "{{user_first_name}}, How can we help you?"} 
  text2 = {"text": "Ok, let's start again. How are you doing today?"} 
  text3 = {"text": "{{user_first_name}}, can you repeat this please?!"}
  text4 = {"text": "Backup Response"} 
  text5 = {"text": "Backup Response"}
  // Print the request body  
  console.log(request.body)
  // If it is Messenger message
  if (request.body.new_msg){
    // If it is text
    if (request.body.eventType === "message_text"){
      // The NLP for this text
      console.log(JSON.parse(request.body.nlp))
       // Check the intent and choose response
      if (JSON.parse(request.body.nlp).intents[0]){
        // Check fot the intent name. You may build logic with combinations.
        if (JSON.parse(request.body.nlp).intents[0].name === "intent_name"){
          // Here the App will reply with text then attachment then quick reply. To replace failing attachments, add backup message in the secondary response (same order).
          response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","responses":[text2,att,qr]}, secondaryResponse:["", text2, ""]});
        } else {
          response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","responses":[text2,att,qr]}, secondaryResponse:["", text2, ""]});
        }
      // If no intents, you may check for entities and build logic.
      } else {
        response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","responses":[text2,att]}, secondaryResponse:["", text1]});
      }
    // If it is attachment
    } else if (request.body.eventType === "message_attachment"){
      console.log(JSON.parse(request.body.value))
      // Here the app will reply with template and replace failing attachment with quick reply.
      response.send({token: "asdasdas", response:{"persona_id":"none","responses":[template]}, secondaryResponse:[qr1]});
    }
    // If it is postback
    else {
      console.log(request.body.value)
      // Check for the payload name
      if (request.body.value === "HELP"){
        response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","responses":[att]}, secondaryResponse:[text4]});
      } else if (request.body.value === "GET_STARTED") {
        response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","responses":[att]}, secondaryResponse:[text2]});
      } 
      // Fallback
      else {
        response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","responses":[att]}, secondaryResponse:[text3]});
      }
    }
  } 
  // If it is comment
  else if (request.body.new_comment){
    // This is the NLP for this comment if any text found
    console.log(JSON.parse(request.body.nlp))
    // Check the intent and choose response
    if (JSON.parse(request.body.nlp).intents[0]){
      if (JSON.parse(request.body.nlp).intents[0].name === "intent_name"){
        response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","response":att}, secondaryResponse:text5});
      } else {
        response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","response":att}, secondaryResponse:text5});
      }
    } else {
      response.send({token: "asdasdas", response:{"persona_id":"1011315279345693","response":att}, secondaryResponse:text5});
    }
  }
  // send 200 status (DON'T IGNORE)
  else {
    response.sendStatus(200);
  }
});