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VB.NET / Infobip WhatsApp / Send WhatsApp template message

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' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim http As New Chilkat.Http
Dim success As Boolean

' Use this online tool to generate code from sample JSON: Generate Code to Create JSON

' The following JSON is sent in the request body.

' {
'   "messages": [
'     {
'       "from": "{{senderNumber}}",
'       "to": "{{receiverNumber}}",
'       "messageId": "test-message-{{$randomInt}}",
'       "content": {
'         "templateName": "boarding_pass",
'         "templateData": {
'           "body": {
'             "placeholders": [
'               "123456789"
'             ]
'           },
'           "header": {
'             "type": "IMAGE",
'             "mediaUrl": "{{exampleImagePath}}"
'           }
'         },
'         "language": "en"
'       },
'       "callbackData": "Callback data"
'     }
'   ]
' }

Dim json As New Chilkat.JsonObject
json.UpdateString("messages[0].from","{{senderNumber}}")
json.UpdateString("messages[0].to","{{receiverNumber}}")
json.UpdateString("messages[0].messageId","test-message-{{$randomInt}}")
json.UpdateString("messages[0].content.templateName","boarding_pass")
json.UpdateString("messages[0].content.templateData.body.placeholders[0]","123456789")
json.UpdateString("messages[0].content.templateData.header.type","IMAGE")
json.UpdateString("messages[0].content.templateData.header.mediaUrl","{{exampleImagePath}}")
json.UpdateString("messages[0].content.language","en")
json.UpdateString("messages[0].callbackData","Callback data")

http.SetRequestHeader("Authorization","App {{INFOBIP_API_KEY}}")
http.SetRequestHeader("Content-Type","application/json")

Dim resp As Chilkat.HttpResponse = http.PostJson3("https://domain.com/whatsapp/1/message/template","application/json",json)
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim sbResponseBody As New Chilkat.StringBuilder
resp.GetBodySb(sbResponseBody)

Dim jResp As New Chilkat.JsonObject
jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = False

Debug.WriteLine("Response Body:")
Debug.WriteLine(jResp.Emit())

Dim respStatusCode As Integer = resp.StatusCode
Debug.WriteLine("Response Status Code = " & respStatusCode)
If (respStatusCode >= 400) Then
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(resp.Header)
    Debug.WriteLine("Failed.")

    Exit Sub
End If



' Sample JSON response:
' (Sample code for parsing the JSON response is shown below)

' {
'   "messages": [
'     {
'       "to": "441134960001",
'       "messageCount": 1,
'       "messageId": "test-message-448",
'       "status": {
'         "groupId": 1,
'         "groupName": "PENDING",
'         "id": 7,
'         "name": "PENDING_ENROUTE",
'         "description": "Message sent to next instance",
'         "action": null
'       }
'     }
'   ],
'   "bulkId": null
' }

' Sample code for parsing the JSON response...
' Use this online tool to generate parsing code from sample JSON: Generate JSON Parsing Code



Dim v_to As String
Dim messageCount As Integer
Dim messageId As String
Dim GroupId As Integer
Dim GroupName As String
Dim Id As Integer
Dim Name As String
Dim Description As String
Dim Action As String

Dim bulkId As String = jResp.StringOf("bulkId")
Dim i As Integer = 0
Dim count_i As Integer = jResp.SizeOfArray("messages")
While i < count_i
    jResp.I = i
    v_to = jResp.StringOf("messages[i].to")
    messageCount = jResp.IntOf("messages[i].messageCount")
    messageId = jResp.StringOf("messages[i].messageId")
    GroupId = jResp.IntOf("messages[i].status.groupId")
    GroupName = jResp.StringOf("messages[i].status.groupName")
    Id = jResp.IntOf("messages[i].status.id")
    Name = jResp.StringOf("messages[i].status.name")
    Description = jResp.StringOf("messages[i].status.description")
    Action = jResp.StringOf("messages[i].status.action")
    i = i + 1
End While

Curl Command

curl -X POST
	-H "Authorization: App {{INFOBIP_API_KEY}}"
	-H "Content-Type: application/json"
	-d '{
    "messages": [
        {
            "from": "{{senderNumber}}",
            "to": "{{receiverNumber}}",
            "messageId": "test-message-{{$randomInt}}",
            "content": {
                "templateName": "boarding_pass",
                "templateData": {
                    "body": {
                        "placeholders": [
                            "123456789"
                        ]
                    },
                    "header": {
                        "type": "IMAGE",
                        "mediaUrl": "{{exampleImagePath}}"
                    }
                },
                "language": "en"
            },
            "callbackData": "Callback data"
        }
    ]
}'
https://domain.com/whatsapp/1/message/template

Postman Collection Item JSON

{
  "name": "Send WhatsApp template message",
  "event": [
    {
      "listen": "test",
      "script": {
        "exec": [
          "pm.test(\"Status code is 200\", function () {",
          "    pm.response.to.have.status(200);",
          "});",
          "",
          "pm.test(\"Message sent successfully\", function () {",
          "    var jsonData = pm.response.json();",
          "    pm.expect(jsonData.messages[0].status.description).to.eql(\"Message sent to next instance\");",
          "});"
        ],
        "type": "text/javascript"
      }
    }
  ],
  "request": {
    "method": "POST",
    "header": [
      {
        "key": "Content-Type",
        "value": "application/json"
      }
    ],
    "body": {
      "mode": "raw",
      "raw": "{\n    \"messages\": [\n        {\n            \"from\": \"{{senderNumber}}\",\n            \"to\": \"{{receiverNumber}}\",\n            \"messageId\": \"test-message-{{$randomInt}}\",\n            \"content\": {\n                \"templateName\": \"boarding_pass\",\n                \"templateData\": {\n                    \"body\": {\n                        \"placeholders\": [\n                            \"123456789\"\n                        ]\n                    },\n                    \"header\": {\n                        \"type\": \"IMAGE\",\n                        \"mediaUrl\": \"{{exampleImagePath}}\"\n                    }\n                },\n                \"language\": \"en\"\n            },\n            \"callbackData\": \"Callback data\"\n        }\n    ]\n}",
      "options": {
        "raw": {
          "language": "json"
        }
      }
    },
    "url": {
      "raw": "{{baseUrl}}/whatsapp/1/message/template",
      "host": [
        "{{baseUrl}}"
      ],
      "path": [
        "whatsapp",
        "1",
        "message",
        "template"
      ]
    },
    "description": "Send a single or multiple template messages to a one or more recipients. Template messages can be sent and delivered at anytime. Each template sent needs to be registered and pre-approved by WhatsApp."
  },
  "response": [
    {
      "name": "Template message \"boarding_pass\"",
      "originalRequest": {
        "method": "POST",
        "header": [
          {
            "key": "Content-Type",
            "value": "application/json"
          }
        ],
        "body": {
          "mode": "raw",
          "raw": "{\n    \"messages\": [\n        {\n            \"from\": \"{{senderNumber}}\",\n            \"to\": \"{{receiverNumber}}\",\n            \"messageId\": \"test-message-{{$randomInt}}\",\n            \"content\": {\n                \"templateName\": \"boarding_pass\",\n                \"templateData\": {\n                    \"body\": {\n                        \"placeholders\": [\n                            \"123456789\"\n                        ]\n                    },\n                    \"header\": {\n                        \"type\": \"IMAGE\",\n                        \"mediaUrl\": \"{{exampleImagePath}}\"\n                    }\n                },\n                \"language\": \"en\"\n            },\n            \"callbackData\": \"Callback data\"\n        }\n    ]\n}",
          "options": {
            "raw": {
              "language": "json"
            }
          }
        },
        "url": {
          "raw": "{{baseUrl}}/whatsapp/1/message/template",
          "host": [
            "{{baseUrl}}"
          ],
          "path": [
            "whatsapp",
            "1",
            "message",
            "template"
          ]
        }
      },
      "status": "OK",
      "code": 200,
      "_postman_previewlanguage": "json",
      "header": [
        {
          "key": "Vary",
          "value": "Origin"
        },
        {
          "key": "Vary",
          "value": "Access-Control-Request-Method"
        },
        {
          "key": "Vary",
          "value": "Access-Control-Request-Headers"
        },
        {
          "key": "Date",
          "value": "Mon, 08 Nov 2021 09:53:31 GMT"
        },
        {
          "key": "Content-Type",
          "value": "application/json"
        },
        {
          "key": "Server",
          "value": "SMS API"
        },
        {
          "key": "Transfer-Encoding",
          "value": "chunked"
        },
        {
          "key": "X-Request-Id",
          "value": "1636365211773062836"
        }
      ],
      "cookie": [
      ],
      "body": "{\n    \"messages\": [\n        {\n            \"to\": \"441134960001\",\n            \"messageCount\": 1,\n            \"messageId\": \"test-message-448\",\n            \"status\": {\n                \"groupId\": 1,\n                \"groupName\": \"PENDING\",\n                \"id\": 7,\n                \"name\": \"PENDING_ENROUTE\",\n                \"description\": \"Message sent to next instance\",\n                \"action\": null\n            }\n        }\n    ],\n    \"bulkId\": null\n}"
    },
    {
      "name": "Template message \"invoice\"",
      "originalRequest": {
        "method": "POST",
        "header": [
          {
            "key": "Content-Type",
            "value": "application/json"
          }
        ],
        "body": {
          "mode": "raw",
          "raw": "{\n    \"messages\": [\n        {\n            \"from\": \"{{senderNumber}}\",\n            \"to\": \"{{receiverNumber}}\",\n            \"messageId\": \"test-message-{{$randomInt}}\",\n            \"content\": {\n                \"templateName\": \"invoice\",\n                \"templateData\": {\n                    \"body\": {\n                        \"placeholders\": [\n                            \"User\",\n                            \"123456789\"\n                        ]\n                    },\n                    \"header\": {\n                        \"type\": \"DOCUMENT\",\n                        \"mediaUrl\": \"{{exampleDocumentPath}}\",\n                        \"filename\": \"ExampleDocumet.pdf\"\n                    }\n                },\n                \"language\": \"en\"\n            },\n            \"callbackData\": \"Callback data\"\n        }\n    ]\n}",
          "options": {
            "raw": {
              "language": "json"
            }
          }
        },
        "url": {
          "raw": "{{baseUrl}}/whatsapp/1/message/template",
          "host": [
            "{{baseUrl}}"
          ],
          "path": [
            "whatsapp",
            "1",
            "message",
            "template"
          ]
        }
      },
      "status": "OK",
      "code": 200,
      "_postman_previewlanguage": "json",
      "header": [
        {
          "key": "Vary",
          "value": "Origin"
        },
        {
          "key": "Vary",
          "value": "Access-Control-Request-Method"
        },
        {
          "key": "Vary",
          "value": "Access-Control-Request-Headers"
        },
        {
          "key": "Date",
          "value": "Mon, 08 Nov 2021 10:08:28 GMT"
        },
        {
          "key": "Content-Type",
          "value": "application/json"
        },
        {
          "key": "Server",
          "value": "SMS API"
        },
        {
          "key": "Transfer-Encoding",
          "value": "chunked"
        },
        {
          "key": "X-Request-Id",
          "value": "1636366108642122837"
        }
      ],
      "cookie": [
      ],
      "body": "{\n    \"messages\": [\n        {\n            \"to\": \"441134960001\",\n            \"messageCount\": 1,\n            \"messageId\": \"test-message-285\",\n            \"status\": {\n                \"groupId\": 1,\n                \"groupName\": \"PENDING\",\n                \"id\": 7,\n                \"name\": \"PENDING_ENROUTE\",\n                \"description\": \"Message sent to next instance\",\n                \"action\": null\n            }\n        }\n    ],\n    \"bulkId\": null\n}"
    }
  ]
}