using System.Collections.Generic;

namespace etoy
{
    /// <summary>
    /// 黑板 (这里用来存放Pileline产生的各种内存信息)
    /// </summary>
    class Blackboard
    {
        /// <summary> 配置表版本号 </summary>
        public string Version;

        /// <summary> 时间戳 </summary>
        public long Timestamp;

        /// <summary> 解析完后的配置表 </summary>
        public List<Table> Tables = new List<Table>();

        /// <summary> 解析完后的KeyValue表 </summary>
        public List<KeyValueTable> KeyValueTables = new List<KeyValueTable>();

        /// <summary> 解析完后的Metadata表 </summary>
        public List<MetadataTable> MetadataTables = new List<MetadataTable>();


        /// <summary>
        /// Metadata是否包含类型
        /// </summary>
        /// <param name="typeName"></param>
        /// <returns></returns>
        public bool ContainsMetadataType(string typeName)
        {
            foreach (var table in MetadataTables)
                if (table.Structs.ContainsKey(typeName))
                    return true;
            return false;
        }

        /// <summary>
        /// 尝试获取Metadata
        /// </summary>
        /// <param name="typeName"></param>
        /// <param name="metadata"></param>
        /// <returns></returns>
        public bool TryGetMetadata(string typeName, out MetadataStruct metadata)
        {
            metadata = null;

            foreach (var table in MetadataTables)
                return table.Structs.TryGetValue(typeName, out metadata);

            return false;
        }
    }
}