Zig

Merge SP-API JSON Order Arrays

See more Amazon SP-API Examples

Demonstrates how to merge JSON arrays for the case of Amazon SP-API orders. Zig

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

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

    var success: bool = false;

    // Batch 1 File
    const a1 = "{\"payload\": {\"Orders\": [{\"AmazonOrderId\": \"1\",\"OrderStatus\": \"Unshipped\"},{\"AmazonOrderId\": \"2\",\"OrderStatus\": \"Unshipped\"}]}";

    // Batch 2 File
    const a2 = "{\"payload\": {\"Orders\": [{\"AmazonOrderId\": \"3\",\"OrderStatus\": \"Unshipped\"},{\"AmazonOrderId\": \"4\",\"OrderStatus\": \"Unshipped\"}]}";

    // Required Merged File
    // {"payload": {"Orders": [{"AmazonOrderId": "1","OrderStatus": "Unshipped"},{"AmazonOrderId": "2","OrderStatus": "Unshipped"},{"AmazonOrderId": "3","OrderStatus": "Unshipped"},{"AmazonOrderId": "4","OrderStatus": "Unshipped"}]}

    success = true;
    const json1 = try chilkat.JsonObject.init();
    defer json1.deinit();
    json1.load(a1) catch {};

    const json2 = try chilkat.JsonObject.init();
    defer json2.deinit();
    json2.load(a2) catch {};

    // We're going to add the order records from json2 to json1.
    const jarr1 = try json1.arrayOf("payload.Orders");
    defer jarr1.deinit();
    const jarr2 = try json2.arrayOf("payload.Orders");
    defer jarr2.deinit();

    var i: i32 = 0;
    const num_orders = jarr2.getSize();
    while (i < num_orders) {
        const j_order = try jarr2.objectAt(i);
        defer j_order.deinit();
        // Assuming non-null return...
        jarr1.addObjectCopyAt(-1, j_order) catch {};
        i = i + 1;
    }

    // Show the merged JSON.
    json1.setEmitCompact(false);
    std.debug.print("{s}\n", .{try json1.emit(alloc)});

    // Result:

    // {
    //   "payload": {
    //     "Orders": [
    //       {
    //         "AmazonOrderId": "1",
    //         "OrderStatus": "Unshipped"
    //       },
    //       {
    //         "AmazonOrderId": "2",
    //         "OrderStatus": "Unshipped"
    //       },
    //       {
    //         "AmazonOrderId": "3",
    //         "OrderStatus": "Unshipped"
    //       },
    //       {
    //         "AmazonOrderId": "4",
    //         "OrderStatus": "Unshipped"
    //       }
    //     ]
    //   }
    // }
}