Zig

WhatsApp Cloud API Send Message

See more WhatsApp Examples

Demonstrates how to send a message using the WhatsApp Cloud API (Business App) Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

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

    const http = try chilkat.Http.init();
    defer http.deinit();

    // The following JSON is sent in the request body.

    // {
    //   "messaging_product": "whatsapp",
    //   "to": "16302581871",
    //   "type": "template",
    //   "template": {
    //     "name": "hello_world",
    //     "language": {
    //       "code": "en_US"
    //     }
    //   }
    // }

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.updateString("messaging_product", "whatsapp") catch {};
    json.updateString("to", "15555555555") catch {};
    json.updateString("type", "template") catch {};
    json.updateString("template.name", "hello_world") catch {};
    json.updateString("template.language.code", "en_US") catch {};

    http.setAuthToken("EAANrS5....yFB9Ma");
    http.setRequestHeader("Content-Type", "application/json");

    const resp = try chilkat.HttpResponse.init();
    defer resp.deinit();
    http.httpJson("POST", "https://graph.facebook.com/v18.0/111111111111111/messages", json, "application/json", resp) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("{d}\n", .{resp.getStatusCode()});
    std.debug.print("{s}\n", .{try resp.getBodyStr(alloc)});

    // Here's a screenshot of our WhatsApp test app.

    // 
}