using Mirle.Component.MPLC.DataBlocks;
using Mirle.Component.MPLC.Interfaces;
using System.Collections.Generic;

namespace Mirle.Component.MPLC.SharedMemory
{
    /// <summary>
    /// 共享記憶體讀取
    /// </summary>
    public class SMReadWriter : IMPLCProvider
    {
        /// <summary>
        /// 建構式
        /// </summary>
        public SMReadWriter() { }
        /// <summary>
        /// 資料區塊
        /// </summary>
        protected readonly List<SMDataBlock> _dataBlocks = new List<SMDataBlock>();
        /// <summary>
        /// 是否連線
        /// </summary>
        public bool IsConnected => true;
        /// <summary>
        /// 新增資料區塊
        /// </summary>
        /// <param name="newDataBlock">共享記憶體資料區塊</param>
        public virtual void AddDataBlock(SMDataBlock newDataBlock)
        {
            _dataBlocks.Add(newDataBlock);
        }
        /// <summary>
        /// 取得位元
        /// </summary>
        /// <param name="address">位置</param>
        /// <returns>True/False</returns>
        public virtual bool GetBit(string address)
        {
            foreach (SMDataBlock block in _dataBlocks)
            {
                if (block.TryGetBit(address, out bool value))
                    return value;
            }
            return false;
        }
        /// <summary>
        /// 設置位元開啟
        /// </summary>
        /// <param name="address">位置</param>
        public virtual void SetBitOn(string address)
        {
            foreach (SMDataBlock block in _dataBlocks)
            {
                if (block.TrySetBitOn(address))
                    return;
            }
        }
        /// <summary>
        /// 設置位元關閉
        /// </summary>
        /// <param name="address">位置</param>
        public virtual void SetBitOff(string address)
        {
            foreach (SMDataBlock block in _dataBlocks)
            {
                if (block.TrySetBitOff(address))
                    return;
            }
        }
        /// <summary>
        /// 讀取字元
        /// </summary>
        /// <param name="address">位置</param>
        /// <returns>字元</returns>
        public virtual int ReadWord(string address)
        {
            foreach (SMDataBlock block in _dataBlocks)
            {
                if (block.TryGetWord(address, out int value))
                    return value;
            }
            return 0;
        }
        /// <summary>
        /// 寫入字元
        /// </summary>
        /// <param name="address">位置</param>
        /// <param name="data">字元</param>
        public virtual void WriteWord(string address, int data)
        {
            foreach (SMDataBlock block in _dataBlocks)
            {
                if (block.TrySetWord(address, data))
                    return;
            }
        }
        /// <summary>
        /// 讀取多個字元
        /// </summary>
        /// <param name="startAddress">起始位置</param>
        /// <param name="length">長度</param>
        /// <returns>字元陣列</returns>
        public virtual int[] ReadWords(string startAddress, int length)
        {
            foreach (SMDataBlock block in _dataBlocks)
            {
                if (block.TryGetWords(startAddress, out int[] data, length))
                    return data;
            }
            return new int[length];
        }
        /// <summary>
        /// 寫入多個字元
        /// </summary>
        /// <param name="startAddress">起始位置</param>
        /// <param name="data">字元陣列</param>
        public virtual void WriteWords(string startAddress, int[] data)
        {
            foreach (SMDataBlock block in _dataBlocks)
            {
                if (block.TrySetWords(startAddress, data))
                    return;
            }
        }
    }
}