using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace MisDataName
{
    public delegate void NormalDel();
    public partial class AssemblyManagement : Form
    {
        public static Hashtable ExternalAssembly = new Hashtable();
        public static Hashtable MisAssembly_UnLoad = new Hashtable();//储存所有已卸载的程序集
        public static  NormalDel UploadAssemblyDel ;
        public static string UpLoadObject = "";
        public AssemblyManagement()
        {
            CreateAssemblyFolder();
            InitializeComponent();
            UploadAssemblyDel = new NormalDel(UploadAssembly);
            InitAssemblyList();
        }
       /// <summary>
       /// 创建程序集文件夹
       /// </summary>
        void CreateAssemblyFolder()
        {
            try
            {
                //获取程序集路径
                string AssemblyCreatePath = System.IO.Directory.GetCurrentDirectory();
                //判断当前路径是否存在对应文件夹
                if (!Directory.Exists(AssemblyCreatePath + "\\Assembly_External"))
                {
                    Directory.CreateDirectory(AssemblyCreatePath + "\\Assembly_External");
                }

                if (!Directory.Exists(AssemblyCreatePath + "\\Assembly_Recycle"))
                {
                    Directory.CreateDirectory(AssemblyCreatePath + "\\Assembly_Recycle");
                }
            }
            catch (Exception err)
            {
                SystemFramework.ApplicationLog.WriteLog(err, err.Message);

            }

        }

        /// <summary>
        /// 初始化回收文件夹，删除内部所有文件
        /// </summary>
        public static  void InitAssembly_Recycle()
        {
            try
            {
                DirectoryInfo folder_Recycle = new DirectoryInfo(System.IO.Directory.GetCurrentDirectory() + "\\Assembly_Recycle");
                foreach (FileInfo file in folder_Recycle.GetFiles("*.dll"))
                {
                    file.Delete();
                }
            }
            catch (Exception err)
            {
                SystemFramework.ApplicationLog.WriteLog(err, err.Message);

            }

        }

        /// <summary>
        /// 初始化程序集列表
        /// </summary>
        void InitAssemblyList()
        {
            try
            {

                ExternalAssembly = new Hashtable();

                listView_Assembly.Items.Clear();
                ListViewItem AssemblyItem;
                string[] AssemblyStrArrary = new string[3];
                int i = 1, k = 0;

                string[] AssemblyKeys = new string[MesDataFunction.OpcOperation.Hashtable_assembly.Count];
                foreach (string _key in MesDataFunction.OpcOperation.Hashtable_assembly.Keys)
                {
                    AssemblyKeys[k] = _key;
                    k++;
                }

                Array.Sort(AssemblyKeys);
                for (int j = 0; j < AssemblyKeys.Length; j++)
                {
                    AssemblyStrArrary[0] = i.ToString();
                    AssemblyStrArrary[1] = AssemblyKeys[j];
                    if (MesDataFunction.OpcOperation.Hashtable_assembly[AssemblyKeys[j]] != null)
                    {
                        AssemblyStrArrary[2] = ((System.Reflection.Assembly)MesDataFunction.OpcOperation.Hashtable_assembly[AssemblyKeys[j]]).FullName.Split(',')[0] + ".dll";
                    }
                    else
                    {
                        AssemblyStrArrary[2] = "";
                    }
                    AssemblyItem = new ListViewItem(AssemblyStrArrary);
                    listView_Assembly.Items.Add(AssemblyItem);
                    i++;

                }

                //初始化外部程序集
                DirectoryInfo folder_External = new DirectoryInfo(System.IO.Directory.GetCurrentDirectory() + "\\Assembly_External");

                foreach (FileInfo file in folder_External.GetFiles("*.dll"))
                {
                    AssemblyStrArrary[0] = i.ToString();
                    AssemblyStrArrary[1] = "未挂载";
                    AssemblyStrArrary[2] = "..MisData" + file.FullName.Replace("MisData\\Assembly_External", "!\\Assembly_External").Split('!')[1];
                    AssemblyItem = new ListViewItem(AssemblyStrArrary);
                    listView_Assembly.Items.Add(AssemblyItem);
                    i++;
                }
                //初始化外部程序集
                DirectoryInfo folder_Recycle = new DirectoryInfo(System.IO.Directory.GetCurrentDirectory() + "\\Assembly_Recycle");
                foreach (FileInfo file in folder_Recycle.GetFiles("*.dll"))
                {
                    AssemblyStrArrary[0] = i.ToString();
                    AssemblyStrArrary[1] = "已卸载";
                    AssemblyStrArrary[2] = "..MisData" + file.FullName.Replace("MisData\\Assembly_Recycle", "!\\Assembly_Recycle").Split('!')[1];
                    AssemblyItem = new ListViewItem(AssemblyStrArrary);
                    listView_Assembly.Items.Add(AssemblyItem);
                    i++;
                }

            }
            catch (Exception err)
            {
                SystemFramework.ApplicationLog.WriteLog(err, err.Message);

            }
        }
        private void button_Exit_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void button_AddAssembly_Click(object sender, EventArgs e)
        {
            
            openFileDialog_OpenAssembly.ShowDialog();
            
            //刷新listview
        }

        private void button_UpLoad_Click(object sender, EventArgs e)
        {
            try
            {
                if (listView_Assembly.SelectedItems.Count > 0)
                {
                    if (listView_Assembly.SelectedItems[0].SubItems[2].Text.Length > 3)
                    {
                        if (listView_Assembly.SelectedItems[0].SubItems[2].Text.Split('\\').Length <= 1)
                        {
                            MessageBox.Show("当前程序集已装载，禁止重复装载！");
                            return;
                        }

                        UploadAssembly UploadAssemblyForm = new MisDataName.UploadAssembly(listView_Assembly.SelectedItems[0].SubItems[2].Text);
                        UploadAssemblyForm.ShowDialog();
                        InitAssemblyList();
                    }
                    else
                    {
                        MessageBox.Show("请选择要操作的程序集。");
                    }
                }
                else
                {
                    MessageBox.Show("请选择要操作的程序集。");
                }
            }
            catch (Exception err)
            {
                SystemFramework.ApplicationLog.WriteLog(err, err.Message);

            }


        }

        private void button_DownLoad_Click(object sender, EventArgs e)
        {
            try
            {
                if (listView_Assembly.SelectedItems.Count > 0)
                {
                    string AssemblyFileName = listView_Assembly.SelectedItems[0].SubItems[1].Text;

                    if (AssemblyFileName.Substring(0, 3) != "Fun")
                    {
                        MessageBox.Show("当前程序集未被引用，请选择要卸载的服务！");
                        return;
                    }

                    List<string> DownLoadServerName = new List<string>();
                    //卸载所有调用当前程序集服务的程序集
                    System.Reflection.Assembly DownLoadAssembly = ((System.Reflection.Assembly)MesDataFunction.OpcOperation.Hashtable_assembly[AssemblyFileName]);

                    //遍历所有对当前程序集有调用的服务
                    foreach (string _key in MesDataFunction.OpcOperation.Hashtable_assembly.Keys)
                    {
                        if (MesDataFunction.OpcOperation.Hashtable_assembly[_key] == null)
                            continue;
                        if (((System.Reflection.Assembly)MesDataFunction.OpcOperation.Hashtable_assembly[_key]).FullName == DownLoadAssembly.FullName)
                        {
                            DownLoadServerName.Add(_key);
                        }
                    }

                    foreach (string _key in DownLoadServerName)
                    {
                        MesDataFunction.OpcOperation.Hashtable_assembly[_key] = null;
                    }
                    //将卸载的DLL文件移出到回收文件 
                    File.Move(System.IO.Directory.GetCurrentDirectory() + "\\" + listView_Assembly.SelectedItems[0].SubItems[2].Text, System.IO.Directory.GetCurrentDirectory() + "\\Assembly_Recycle\\" + listView_Assembly.SelectedItems[0].SubItems[2].Text.Replace(".dll", "") + "_" + DateTime.Now.ToUniversalTime().ToString().Replace('/', '_').Replace(' ', '_').Replace(':', '_') + ".dll");

                    InitAssemblyList();
                    MessageBox.Show("程序集卸载成功！");
                }
                else
                {
                    MessageBox.Show("请选择要卸载的程序集。");
                }
            }
            catch (Exception err)
            {
                SystemFramework.ApplicationLog.WriteLog(err, err.Message);

            }


        }

        /// <summary>
        /// 装载程序集
        /// </summary>
        void UploadAssembly()
        {
            try
            {
                //获取选中行的 dll 名称
                string BinPath = System.IO.Directory.GetCurrentDirectory();
                string AssemblyFileName = listView_Assembly.SelectedItems[0].SubItems[2].Text.Replace("..MisData\\", "");
                AssemblyFileName = AssemblyFileName.Split('\\')[1].ToString();//程序集文件名称

                //此步骤需要将所有引用的同名DLL全部替换
                System.Reflection.Assembly new_LoadAssembly = System.Reflection.Assembly.LoadFile(BinPath + listView_Assembly.SelectedItems[0].SubItems[2].Text.Replace("..MisData", ""));
                System.Reflection.Assembly old_LoadAssembly = (System.Reflection.Assembly)MesDataFunction.OpcOperation.Hashtable_assembly[UpLoadObject];

                int Compare_i = 0;

                foreach (string _key in MesDataFunction.OpcOperation.Hashtable_assembly.Keys)
                {
                    if (((System.Reflection.Assembly)MesDataFunction.OpcOperation.Hashtable_assembly[_key]) == null) continue;
                    if (((System.Reflection.Assembly)MesDataFunction.OpcOperation.Hashtable_assembly[_key]).FullName == new_LoadAssembly.FullName && _key != UpLoadObject)
                    {
                        //提示存在同名程序集  若要替换  请先卸载同名程序集
                        Compare_i++;
                    }

                }
                if (Compare_i > 0)
                {
                    //存在多个引用项
                    MessageBox.Show("系统存在与当前程序集同名的程序集引用，如果要引用新程序集，请提前卸载其他服务引用的同名程序集：", "提示：");
                    return;

                }
                else
                {

                    //移出旧程序集  
                    if (old_LoadAssembly != null)
                    {
                        File.Move(System.IO.Directory.GetCurrentDirectory() + "\\" + old_LoadAssembly.FullName.Split(',')[0] + ".dll", System.IO.Directory.GetCurrentDirectory() + "\\Assembly_Recycle\\" + old_LoadAssembly.FullName.Split(',')[0] + "_" + DateTime.Now.ToUniversalTime().ToString().Replace('/', '_').Replace(' ', '_').Replace(':', '_') + ".dll");
                    }

                    MesDataFunction.OpcOperation.Hashtable_assembly[UpLoadObject] = new_LoadAssembly;
                    //移动原程序集  然后移动新程序集  系统文件夹是否存在同名Dll文件 
                    if (File.Exists(System.IO.Directory.GetCurrentDirectory() + "\\" + AssemblyFileName))
                    {
                        //将同名DLL文件移出到回收文件 
                        File.Move(System.IO.Directory.GetCurrentDirectory() + "\\" + AssemblyFileName, System.IO.Directory.GetCurrentDirectory() + "\\Assembly_Recycle\\" + AssemblyFileName.Replace(".dll", "") + "_" + DateTime.Now.ToUniversalTime().ToString().Replace('/', '_').Replace(' ', '_').Replace(':', '_') + ".dll");

                    }
                    File.Move(System.IO.Directory.GetCurrentDirectory() + "\\" + listView_Assembly.SelectedItems[0].SubItems[2].Text.Replace("..MisData\\", ""), System.IO.Directory.GetCurrentDirectory() + "\\" + (AssemblyFileName.Split('_')[0]).Replace(".dll", "") + ".dll");//移入新程序集 
                    MessageBox.Show("程序集装载成功！");
                }

            }
            catch (Exception err)
            {
                SystemFramework.ApplicationLog.WriteLog(err, err.Message);

            }

        }

        private void openFileDialog_OpenAssembly_FileOk(object sender, CancelEventArgs e)
        {
            try
            {
                //将文件复制到Assembly_External 文件夹

                if (openFileDialog_OpenAssembly.SafeFileName.Split('.')[openFileDialog_OpenAssembly.SafeFileName.Split('.').Length - 1] != "dll")
                {
                    MessageBox.Show("添加的文件无效，请选择需要添加的“dll”文件！");
                    return;
                }
                FileInfo file = new FileInfo(openFileDialog_OpenAssembly.FileName);
                file.CopyTo(System.IO.Directory.GetCurrentDirectory() + "\\Assembly_External\\" + openFileDialog_OpenAssembly.SafeFileName, true);
                InitAssemblyList();
            }
            catch (Exception err)
            {
                SystemFramework.ApplicationLog.WriteLog(err, err.Message);

            }

        }
        
        private void button_Refresh_Click(object sender, EventArgs e)
        {
            InitAssemblyList();
        }


    }
}