const std = @import("std");
const json_utils = @import("json_utils.zig");
const Server = @import("./server.zig");
const ItemId = Server.ItemId;
const json = std.json;

const ItemSlot = @This();

id: ItemId,
quantity: u64,

pub fn parse(api: *Server, slot_obj: json.ObjectMap) !?ItemSlot {
    const code = try json_utils.getStringRequired(slot_obj, "code");
    if (code.len == 0) return null;

    const quantity = try json_utils.getIntegerRequired(slot_obj, "quantity");
    if (quantity < 0) return error.InvalidQuantity;

    return ItemSlot{
        .id = try api.getItemId(code),
        .quantity = @intCast(quantity),
    };
}