(Tcl) WhatsApp - Upload Media

Demonstrates how to upload media to the WhatsApp Business API client. The POST body must contain the binary media data and the Content-Type header must be set to the type of the media being uploaded.

For more information, see https://developers.facebook.com/docs/whatsapp/api/media

Chilkat Tcl Extension Downloads Chilkat Tcl Extension Downloads

load ./chilkat.dll

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

set http [new_CkHttp]

# Implements the following CURL command:

# curl -X POST \
# https://your-webapp-hostname:your-webapp-port/v1/media \
# -H 'Authorization: Bearer your-auth-token' \ 
# -H 'Content-Type: image/jpeg'
# --data-binary @your-file-path

# Use the following online tool to generate HTTP code from a CURL command
# Convert a cURL Command to HTTP Source Code

set bdRequestBody [new_CkBinData]

set success [CkBinData_LoadFile $bdRequestBody "your-file-path"]
if {$success != 1} then {
    puts "Failed to load your-file-path"
    delete_CkHttp $http
    delete_CkBinData $bdRequestBody
    exit
}

# Adds the "Authorization: Bearer your-auth-token" header.
CkHttp_put_AuthToken $http "your-auth-token"

# resp is a CkHttpResponse
set resp [CkHttp_PBinaryBd $http "POST" "https://your-webapp-hostname:your-webapp-port/v1/media" $bdRequestBody "image/jpeg" 0 0]
if {[CkHttp_get_LastMethodSuccess $http] == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkBinData $bdRequestBody
    exit
}

set sbResponseBody [new_CkStringBuilder]

CkHttpResponse_GetBodySb $resp $sbResponseBody
set jResp [new_CkJsonObject]

CkJsonObject_LoadSb $jResp $sbResponseBody
CkJsonObject_put_EmitCompact $jResp 0

puts "Response Body:"
puts [CkJsonObject_emit $jResp]

set respStatusCode [CkHttpResponse_get_StatusCode $resp]
puts "Response Status Code = $respStatusCode"
if {$respStatusCode >= 400} then {
    puts "Response Header:"
    puts [CkHttpResponse_header $resp]
    puts "Failed."
    delete_CkHttpResponse $resp

    delete_CkHttp $http
    delete_CkBinData $bdRequestBody
    delete_CkStringBuilder $sbResponseBody
    delete_CkJsonObject $jResp
    exit
}

delete_CkHttpResponse $resp

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

# {
#   "messages": [
#     {
#       "id": "gBEGkYiEB1VXAglK1ZEqA1YKPrU"
#     }
#   ]
# }

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

set i 0
set count_i [CkJsonObject_SizeOfArray $jResp "messages"]
while {$i < $count_i} {
    CkJsonObject_put_I $jResp $i
    set id [CkJsonObject_stringOf $jResp "messages[i].id"]
    set i [expr $i + 1]
}

delete_CkHttp $http
delete_CkBinData $bdRequestBody
delete_CkStringBuilder $sbResponseBody
delete_CkJsonObject $jResp