Zig

Paynow.pl -- Make a Payment Request

See more Paynow.pl Examples

Make a payment request POST with prepared message on Paynow payment request endpoint. Zig

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

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

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

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

    // Implements the following CURL command:

    // curl --request POST 'https://api.sandbox.paynow.pl/v1/payments' \
    // -H 'Content-Type: application/json' \
    // -H 'Api-Key: c12c386b-650b-43db-9430-d84fc05d9433' \
    // -H 'Signature: aYPCytCoc+/wFgqHZJjgBCi20omXTn0yzm9LysJgnFo=' \
    // -H 'Idempotency-Key: 59c6dd26-f905-487b-96c9-fd1d2bd76885' \
    // --data-raw '{
    //     "amount": 45671,
    //     "externalId": "234567898654",
    //     "description": "Test transaction",
    //     "buyer": {
    //         "email": "jan.kowalski@melements.pl"
    //     }
    // }'

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

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

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

    // {
    //   "amount": 45671,
    //   "externalId": "234567898654",
    //   "description": "Test transaction",
    //   "buyer": {
    //     "email": "jan.kowalski@melements.pl"
    //   }
    // }

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.updateInt("amount", 45671) catch {};
    json.updateString("externalId", "234567898654") catch {};
    json.updateString("description", "Test transaction") catch {};
    json.updateString("buyer.email", "jan.kowalski@melements.pl") catch {};

    const my_api_access_key = "c12c386b-650b-43db-9430-d84fc05d9433";
    const my_sig_calc_key = "b758f20d-ba92-44fa-acca-f57e99787b9d";

    // Calculate the Signature header.
    const crypt = try chilkat.Crypt2.init();
    defer crypt.deinit();
    crypt.setMacAlgorithm("hmac");
    crypt.setEncodingMode("base64");
    crypt.setMacKeyString(my_sig_calc_key) catch {};
    crypt.setHashAlgorithm("SHA-256");
    const message_body = try json.emit(alloc);
    const signature = try crypt.macStringENC(alloc, message_body);

    http.setRequestHeader("Idempotency-Key", try crypt.generateUuid(alloc));
    http.setRequestHeader("Api-Key", my_api_access_key);
    http.setRequestHeader("Signature", signature);
    http.setRequestHeader("Content-Type", "application/json");
    http.setAccept("application/json");

    const resp = try chilkat.HttpResponse.init();
    defer resp.deinit();
    http.httpJson("POST", "https://api.sandbox.paynow.pl/v1/payments", json, "application/json", resp) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Response body:\n", .{});
    std.debug.print("{s}\n", .{try resp.getBodyStr(alloc)});

    // Sample response:
    // {
    //   "redirectUrl": "https://paywall.sandbox.paynow.pl/NOA0-YJ9-Y1P-29V?token=eyJraWQiOiJhMD ... L60wk",
    //   "paymentId": "NOA0-YJ9-Y1P-29V",
    //   "status": "NEW"
    // }

    const json_resp = try chilkat.JsonObject.init();
    defer json_resp.deinit();
    json_resp.load(try resp.getBodyStr(alloc)) catch {};
    _ = try json.stringOf(alloc, "redirectUrl");
    _ = try json.stringOf(alloc, "paymentId");
    _ = try json.stringOf(alloc, "status");
}