Create asset upload job

const fetch = require("node-fetch");
const fs = require("fs");

fetch("https://api.canva.com/rest/v1/asset-uploads", {
  method: "POST",
  headers: {
    "Asset-Upload-Metadata": JSON.stringify({ "name_base64": "TXkgQXdlc29tZSBVcGxvYWQg8J+agA==" }),
    "Authorization": "Bearer {token}",
    "Content-Length": fs.statSync("/path/to/file").size,
    "Content-Type": "application/octet-stream",
  },
  body: fs.createReadStream("/path/to/file"),
})
  .then(async (response) => {
    const data = await response.json();
    console.log(data);
  })
  .catch(err => console.error(err));

import java.io.IOException;
import java.net.URI;
import java.net.http.*;
import java.nio.file.Paths;

public class ApiExample {
    public static void main(String[] args) throws IOException, InterruptedException {
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.canva.com/rest/v1/asset-uploads"))
            .header("Authorization", "Bearer {token}")
            .header("Content-Type", "application/octet-stream")
            .header("Asset-Upload-Metadata", "{ \"name_base64\": \"TXkgQXdlc29tZSBVcGxvYWQg8J+agA==\" }")
            .method("POST", HttpRequest.BodyPublishers.ofFile(Paths.get("/path/to/file")))
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient().send(
            request,
            HttpResponse.BodyHandlers.ofString()
        );
        System.out.println(response.body());
    }
}

import requests
import json

headers = {
    "Authorization": "Bearer {token}",
    "Content-Type": "application/octet-stream",
    "Asset-Upload-Metadata": json.dumps({ "name_base64": "TXkgQXdlc29tZSBVcGxvYWQg8J+agA==" })
}

with open("/path/to/file", "rb") as file:
    response = requests.post("https://api.canva.com/rest/v1/asset-uploads",
        headers=headers,
        data=file
    )
    print(response.json())

using System.Net.Http;
using System.Net.Http.Headers;

var client = new HttpClient();
var request = new HttpRequestMessage
{
  Method = HttpMethod.Post,
  RequestUri = new Uri("https://api.canva.com/rest/v1/asset-uploads"),
  Headers =
  {
    { "Authorization", "Bearer {token}" },
    { "Asset-Upload-Metadata", "{ \"name_base64\": \"TXkgQXdlc29tZSBVcGxvYWQg8J+agA==\" }" },
  },
  Content = new StreamContent(File.OpenRead("/path/to/file"))
  {
    Headers =
    {
      ContentType = new MediaTypeHeaderValue("application/octet-stream"),
    }
  },
};

using (var response = await client.SendAsync(request))
{
  response.EnsureSuccessStatusCode();
  var body = await response.Content.ReadAsStringAsync();
  Console.WriteLine(body);
};

package main

import (
	"fmt"
	"io"
	"net/http"
	"os"
)

func main() {
	payload, _ := os.Open("/path/to/file")
	defer payload.Close()

	url := "https://api.canva.com/rest/v1/asset-uploads"
	req, _ := http.NewRequest("POST", url, payload)
	req.Header.Add("Authorization", "Bearer {token}")
	req.Header.Add("Content-Type", "application/octet-stream")
	req.Header.Add("Asset-Upload-Metadata", "{ \"name_base64\": \"TXkgQXdlc29tZSBVcGxvYWQg8J+agA==\" }")

	res, _ := http.DefaultClient.Do(req)
	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)
	fmt.Println(string(body))
}

$curl = curl_init();
curl_setopt_array($curl, array(
  CURLOPT_URL => "https://api.canva.com/rest/v1/asset-uploads",
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_HTTPHEADER => array(
    'Authorization: Bearer {token}',
    'Content-Type: application/octet-stream',
    'Asset-Upload-Metadata: { "name_base64": "TXkgQXdlc29tZSBVcGxvYWQg8J+agA==" }',
  ),
  CURLOPT_POSTFIELDS => file_get_contents("/path/to/file")
));

$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);

if (empty($err)) {
  echo $response;
} else {
  echo "Error: " . $err;
}

require 'net/http'
require 'uri'

url = URI('https://api.canva.com/rest/v1/asset-uploads')
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request['Authorization'] = 'Bearer {token}'
request['Content-Type'] = 'application/octet-stream'
request['Asset-Upload-Metadata'] = '{ "name_base64": "TXkgQXdlc29tZSBVcGxvYWQg8J+agA==" }'
request.body = File.read('/path/to/file')

response = http.request(request)
puts response.read_body