Inventory¶

public async Task<InventoryItem> GetInventoryItemAsync(string companyId, string itemId)
{
    var url = $"{_baseUrl}/entity/inventory/{companyId}_{itemId}";
    var response = await _httpClient.GetAsync(url);
    response.EnsureSuccessStatusCode();

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

public async Task<decimal> GetTotalAvailableQtyAsync(string companyId, string itemId)
{
    var item = await GetInventoryItemAsync(companyId, itemId);

    return item.InventoryLocations?
        .Sum(loc => loc.qty_available) ?? 0m;
}

public async Task<decimal> GetWarehouseAvailableQtyAsync(
    string companyId, string itemId, string warehouseId)
{
    var item = await GetInventoryItemAsync(companyId, itemId);

    var location = item.InventoryLocations?
        .FirstOrDefault(loc =>
            string.Equals(loc.warehouse_id, warehouseId,
                StringComparison.OrdinalIgnoreCase));

    return location?.qty_available ?? 0m;
}

public async Task<InventoryItem> CreateInventoryItemAsync(InventoryItemCreateRequest request)
{
    // Step 1: Get template with defaults
    var templateResponse = await _httpClient.GetAsync($"{_baseUrl}/entity/inventory/new");
    templateResponse.EnsureSuccessStatusCode();
    var templateXml = await templateResponse.Content.ReadAsStringAsync();

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

    // Step 2: Populate fields
    template.item_id          = request.ItemId;
    template.item_desc        = request.Description;
    template.unit_of_measure  = request.Uom;
    template.product_group_id = request.ProductGroupId;
    template.standard_cost    = request.StandardCost;
    template.list_price       = request.ListPrice;
    template.weight           = request.Weight;
    template.hazmat_flag      = request.IsHazmat ? "Y" : "N";
    template.serialized_flag  = request.IsSerialized ? "Y" : "N";
    template.lot_controlled   = request.IsLotControlled ? "Y" : "N";

    // Step 3: 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/inventory/", content);
    response.EnsureSuccessStatusCode();

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