// See https://aka.ms/new-console-template for more information

using Newtonsoft.Json.Linq;
using Serilog;
using System.Data.SqlTypes;
using System.Diagnostics;
using System.Drawing;
using static System.Net.Mime.MediaTypeNames;

async Task ProcessStandardInputAsync(Process process, string cmd, string workDirectory = "")
{
    if (!string.IsNullOrWhiteSpace(workDirectory))
    {
        process.StartInfo.WorkingDirectory = workDirectory;
    }

    await process.StandardInput.WriteLineAsync(cmd);
    await process.StandardInput.FlushAsync();

    while (!process.StandardOutput.EndOfStream)
    {
        var output = await process.StandardOutput.ReadLineAsync();
        if (string.IsNullOrWhiteSpace(output))
        {
            break;
        }
    }
}

void DeleteFolderContents(string path)
{
    DirectoryInfo directory = new DirectoryInfo(path);

    foreach (FileInfo file in directory.GetFiles())
    {
        if (file.FullName.Contains("UnInstall"))
        {
            continue;
        }

        try
        {
            file.Attributes = FileAttributes.Normal;
            file.Delete();
        }
        catch (IOException ex)
        {
            // 处理文件被占用的异常
            MyLog($"File {file.FullName} is being used and cannot be deleted. {ex.Message}");
        }
        catch (UnauthorizedAccessException ex)
        {

            try
            {
                File.Delete(file.FullName);
            }
            catch (Exception ex2)
            {

                MyLog($"File {file.FullName}  cannot be deleted. {ex2.Message}");
            }


        }




    }

    foreach (DirectoryInfo subDirectory in directory.GetDirectories())
    {
        subDirectory.Delete(true);
    }
}


void MyLog(string message)
{
    Console.WriteLine(message);
    //Serilog.Log.Information(message);
}


//Serilog.Log.Logger = new LoggerConfiguration()
//                      .WriteTo.File("logs\\UninstallLog.txt", rollingInterval: RollingInterval.Day)
//                      .CreateLogger();



var startProList = Process.GetProcesses().Where(t => t.ProcessName.Contains("EI_Image_Viewer_Installer")).ToList();
foreach (var item in startProList)
{
    item.Kill();
}


var configFolder = $@"C:\ProgramData\.xingcang\";

var configPath = Path.Combine(configFolder, "config.json");
if (!File.Exists(configPath))
{
    MyLog("The current system does not have an imaging system deployed and does not need to be uninstalled.");
    Console.ReadLine();
}
else
{
    Console.ForegroundColor = ConsoleColor.Red;
    MyLog("");
    MyLog("Warning: Uninstalling the EI-Med Viewer service will clear the background services, databases, website files and all running data records, so please operate with caution. Before uninstalling, make sure your data has been backed up.");
    MyLog("      Are you sure you want to continue uninstalling the service?（Y/N）");
    Console.ResetColor();

    string confirm = Console.ReadLine();
    if (confirm.ToUpper() == "Y")
    {
        // 执行卸载操作
        try
        {
            MyLog("Start reading activation information...");

            var appsettingsJson = File.ReadAllText(configPath);

            // 解析 JSON 字符串
            var jObject = JObject.Parse(appsettingsJson);


            var configObj = new
            {
                key = jObject["key"].ToString(),
                value = jObject["value"].ToString(),
                user = jObject["user"].ToString(),
                server = jObject["server"].ToString(),
                password = jObject["password"].ToString(),
                dbName = jObject["dbName"].ToString(),
                deployFolder = jObject["deployFolder"].ToString(),
                nginxStartPath = jObject["nginxStartPath"].ToString(),
                //apiPath = jObject["apiPath"].ToString(),
                serviceName = jObject["serviceName"].ToString(),
                nginxServiceName = jObject["nginxServiceName"]?.ToString(),
                nginxServiceEXEPath = jObject["nginxServiceEXEPath"]?.ToString(),
            };
            MyLog("The activation information has been read, and start preparing for uninstall...");

            Process process = new Process();
            process.StartInfo.FileName = "cmd.exe";
            process.StartInfo.RedirectStandardInput = true;
            process.StartInfo.UseShellExecute = false;
            process.StartInfo.RedirectStandardOutput = true;

            //process.StartInfo.CreateNoWindow = false; // 不创建新窗口

            process.Start();

            MyLog("Stop and uninstall nginx service...");
            await ProcessStandardInputAsync(process, $" {configObj.nginxServiceEXEPath} uninstall ", configObj.nginxStartPath);
            await ProcessStandardInputAsync(process, $"sc stop {configObj.nginxServiceName}");
            await ProcessStandardInputAsync(process, $"sc delete {configObj.nginxServiceName}");

            await Task.Delay(2000);


            var proList = Process.GetProcesses().Where(t => ((t.ProcessName.Contains("nginx") || t.ProcessName.Contains("nginxService")) && t.MainModule.FileName.Contains(configObj.nginxStartPath))).ToList();

            foreach (var item in proList)
            {
                item.Kill();
            }




            MyLog("Stop and uninstall the backend service...");

            await ProcessStandardInputAsync(process, $"sc stop {configObj.serviceName}");
            await ProcessStandardInputAsync(process, $"sc delete {configObj.serviceName}");


            MyLog("If the database is being used by other processes or connections, deletion will fail. You can manually delete the remaining database after uninstalling.");
            MyLog("Execute the command of delete database...");
            await ProcessStandardInputAsync(process, $@"  SQLCMD  -S {configObj.server} -U  {configObj.user} -P {configObj.password}  -Q ""DROP DATABASE {configObj.dbName}""  ");


            process.StandardInput.Close();
            process.WaitForExit();

            await Task.Delay(3000);

            MyLog($"Delete all deletable contents under the deployment folder {configObj.deployFolder}...");
            DeleteFolderContents(configObj.deployFolder);


            MyLog("Delete activation information...");
            DeleteFolderContents(configFolder);
            MyLog("The EI-Med Viewer uninstallation is completed.");
            MyLog("Automatically exit after 3 seconds...");
            await Task.Delay(3000);

            string cmdArgs = $"/C ping 127.0.0.1 -n 3 & rmdir /s /q \"{configObj.deployFolder}\"";
            ProcessStartInfo psi = new ProcessStartInfo("cmd.exe", cmdArgs);
            psi.WindowStyle = ProcessWindowStyle.Hidden;
            psi.CreateNoWindow = true;
            Process.Start(psi);

            Environment.Exit(0);

        }
        catch (Exception ex)
        {

            MyLog("Problems encountered during uninstallation:" + ex.Message + " Please check whether there are other programs occupying related resources, please confirm and then uninstall again.");
            Console.ReadLine();
        }


    }




}