Sales Orders¶

public async Task<Order> GetOrderAsync(string companyId, int orderNo)
{
    var url = $"{_baseUrl}/entity/orders/{companyId}_{orderNo}";
    var response = await _httpClient.GetAsync(url);
    response.EnsureSuccessStatusCode();

    var xml = await response.Content.ReadAsStringAsync();
    var serializer = new XmlSerializer(typeof(Order));
    using var reader = new StringReader(xml);
    return (Order)serializer.Deserialize(reader);
}

public async Task<Order> CreateOrderAsync(OrderCreateRequest request)
{
    // Step 1: Fetch template with defaults
    var templateResponse = await _httpClient.GetAsync($"{_baseUrl}/entity/orders/new");
    templateResponse.EnsureSuccessStatusCode();
    var templateXml = await templateResponse.Content.ReadAsStringAsync();

    var serializer = new XmlSerializer(typeof(Order));
    using var templateReader = new StringReader(templateXml);
    var template = (Order)serializer.Deserialize(templateReader);

    // Step 2: Populate header
    template.customer_id = request.CustomerId;
    template.order_date  = request.OrderDate;
    template.ship_to_id  = request.ShipToId;
    template.ship_via    = request.ShipVia;
    template.ordered_by  = request.OrderedBy;
    template.po_no       = request.PoNo;

    // Step 3: Add lines
    template.OrderLines = request.Lines.Select((line, index) => new OrderLine
    {
        line_no          = index + 1,
        item_id          = line.ItemId,
        unit_quantity    = line.Quantity,
        unit_price       = line.UnitPrice,
        required_date    = line.RequiredDate,
        warehouse_id     = line.WarehouseId,
        unit_of_measure  = line.Uom
    }).ToList();

    // Step 4: Serialize and POST
    using var writer = new StringWriter();
    serializer.Serialize(writer, template);
    var xml = writer.ToString();

    var content = new StringContent(xml, Encoding.UTF8, "application/xml");
    var response = await _httpClient.PostAsync($"{_baseUrl}/entity/orders/", content);
    response.EnsureSuccessStatusCode();

    var responseXml = await response.Content.ReadAsStringAsync();
    using var reader = new StringReader(responseXml);
    return (Order)serializer.Deserialize(reader);
}