using Microsoft.AspNetCore.Server.Kestrel.Https;
using ServiceInside.Controllers;
using ServiceInside.Filter;
using ServiceInside.Service;
using ServiceShared;
using ServiceShared.Crypto;
using ServiceShared.Database;
using System.Diagnostics;
using System.Reflection;
using System.Security.Cryptography.X509Certificates;

WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
IConfigurationSection logSection = builder.Configuration.GetSection("Log");

if (logSection != null)
{
    string type = logSection.GetValue<string>("Type");
    string logPath = logSection.GetValue<string>("path");
    string SmtpServer = logSection.GetValue<string>("SmtpServer");
    int SmtpPort = logSection.GetValue<int>("SmtpPort");
    bool SmtpSSL = logSection.GetValue<bool>("SmtpSSL");
    string SmtpSenderEmail = logSection.GetValue<string>("SmtpSenderEmail");
    string SmtpSenderName = logSection.GetValue<string>("SmtpSenderName");
    string SmtpRecipients = logSection.GetValue<string>("SmtpRecipients");
    string SmtpUsername = logSection.GetValue<string>("SmtpUsername");
    string SmtpPassword = logSection.GetValue<string>("SmtpPassword");

    /** check if smtp username string was stored as encrypted string in config **/
    if(!string.IsNullOrEmpty(SmtpUsername))
    {
        string decryptedSmtpUsername = AES.Decrypt(SmtpUsername);

        if(!string.IsNullOrEmpty(decryptedSmtpUsername))
        {
            SmtpUsername = decryptedSmtpUsername;
        }
    }

    /** check if smtp password string was stored as encrypted string in config **/
    if (!string.IsNullOrEmpty(SmtpPassword))
    {
        string decryptedSmtpPassword = AES.Decrypt(SmtpPassword);

        if (!string.IsNullOrEmpty(decryptedSmtpPassword))
        {
            SmtpPassword = decryptedSmtpPassword;
        }
    }

    Log.Types logType = Log.Types.INFO;
    Enum.TryParse(type, out logType);
    Log.SetLogPath(logPath);
    Log.SetLog(logType);
    Mail.SetSMTPData(SmtpServer, SmtpPort, SmtpSSL, SmtpSenderEmail, SmtpSenderName, SmtpRecipients, null, SmtpUsername, SmtpPassword);

    int CleanUpDays = builder.Configuration.GetValue<int>("CleanUpDays", 30);

    string privateDirectory = builder.Configuration.GetSection("PrivateDirectory").Value;
    string publicDirectory = builder.Configuration.GetSection("PublicDirectory").Value;
    int maxWorkerThreads = builder.Configuration.GetValue<int>("MaxWorkerThreads", 10);
    int maxTryNotFoundResults = builder.Configuration.GetValue<int>("MaxTryNotFoundResults", 2);
    int checkNotFoundResultsIntervalMinutes = builder.Configuration.GetValue<int>("CheckIntervalNotFoundResultsInMinutes", 1440);
    string serviceOutsideIP = builder.Configuration.GetSection("ServiceOutsideIP").Value;
    string serviceOutsideURL = builder.Configuration.GetSection("ServiceOutsideURL").Value;
    string serviceInsideURL = builder.Configuration.GetSection("ServiceInsideURL").Value;

    string defaultConnection = builder.Configuration.GetConnectionString("default");

    if (string.IsNullOrEmpty(serviceOutsideIP))
    {
        Log.Error(new Exception("ServiceOutsideIP was not found in the appsettings.json"), "InsideServie", "Programm");
    }
    else if (string.IsNullOrEmpty(serviceOutsideURL))
    {
        Log.Error(new Exception("ServiceOutsideURL was not found in the appsettings.json"), "InsideServie", "Programm");
    }
    else if (string.IsNullOrEmpty(privateDirectory))
    {
        Log.Error(new Exception("PrivateDirectory was not found in the appsettings.json"), "InsideServie", "Programm");
    }
    else if (string.IsNullOrEmpty(publicDirectory))
    {
        Log.Error(new Exception("PublicDirectory was not found in the appsettings.json"), "InsideServie", "Programm");
    }
    else if (string.IsNullOrEmpty(defaultConnection))
    {
        Log.Error(new Exception("Default ConnectionString was not found in the appsettings.json"), "InsideServie", "Programm");
    }
    else
    {
        string connectionString = builder.Configuration.GetConnectionString(defaultConnection);

        if (string.IsNullOrEmpty(connectionString))
        {
            Log.Error(new Exception("ConnectionString(" + connectionString + ") was not found in the appsettings.json"), "InsideServie", "Programm");
        }
        else
        {
            /** check if connection string was stored as encrypted string in config **/
            string decryptedConnectionString = AES.Decrypt(connectionString);

            if(!string.IsNullOrEmpty(decryptedConnectionString))
            {
                connectionString = decryptedConnectionString;
            }

            string appVersion = Assembly.GetEntryAssembly().GetName().Version.ToString();
            Log.Info("ServiceInside(" + appVersion + ") starting...");

            DbContext dbContext = new DbContext(connectionString);
            DbContext.setApplicationVersion(appVersion);

            builder.Services.Add(new ServiceDescriptor(typeof(DbContext), dbContext));
            builder.Services.Add(new ServiceDescriptor(typeof(KeyPair), Curve25519.GenerateKeyPair()));
            builder.Services.AddControllers();
            
            WebApplication app = builder.Build();

            app.UseHttpsRedirection();
            app.UseAuthorization();
            app.UseRouting();
            app.MapControllers();

            Log.SetTraceDbController(new ServiceShared.Database.Controllers.Traces(dbContext));
            Log.Info("ServiceInside successfully started");
            //Mail.SendLogs("ServiceInside - started", "ServiceInside successfully started");

            TrustedHeader.SetLog(logType);
            ServiceOutside.SetServiceOutsideURL(serviceOutsideURL);
            ServiceOutsideRequest.SetServiceInsideIP(serviceOutsideIP);
            BackgroundWorker.SetParameters(privateDirectory, publicDirectory, dbContext, maxWorkerThreads, maxTryNotFoundResults, checkNotFoundResultsIntervalMinutes);
            BackgroundWorker.Start();

            CleanUp.SetOldDays(CleanUpDays, logPath);
            CleanUp.SetDbContext(new ServiceShared.Database.Controllers.Results(dbContext), new ServiceShared.Database.Controllers.Traces(dbContext));
            CleanUp.CleanUpInBackground();
            
            /** send WakeUp request on application stoped **/
            app.Lifetime.ApplicationStopped.Register(() => 
            {
                WakeUp(serviceInsideURL);
            });

            app.Run();
        }
    }
}
else 
{
    Log.Error(new Exception("Log configuration was not found in appsettings.json"), "InsideService", "Programm");
}

void WakeUp(string serviceInsideURL)
{
    if (!string.IsNullOrEmpty(serviceInsideURL))
    {
        try
        {
            string wakeUpExe = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "WakeUp.exe");
            Process wakeUp = new Process();
            wakeUp.StartInfo = new ProcessStartInfo();
            wakeUp.StartInfo.FileName = wakeUpExe;
            wakeUp.StartInfo.Arguments = serviceInsideURL;
            wakeUp.Start();
        }
        catch (Exception ex)
        {
            Log.Critical(ex, "Programm", "ApplicationStopped");
        }
    }
}