using System;
using ln.logging;
using System.IO;
using ln.types.threads;
using ln.types.net;
using ln.application;
using ln.application.service;
using ln.skyscanner.services;
using System.Threading;
using ln.http.resources;
using ln.types.rpc;
using ln.json;
namespace ln.skyscanner
{
    public enum ComponentState { STOPPED, INITIALIZED, STARTED, FAILED, STOPPING }

    public class SkyScanner : Application
    {
        public static SkyScanner Instance { get; private set; }

        public String BasePath { get; private set; }
        public Pool ConveniencePool { get; }

        public SkyScanner()
        {
            if (Instance != null)
                throw new NotSupportedException("only one SkyScanner may be created");
            Instance = this;

            Arguments
                .Add(0, "base-path", Path.GetFullPath("/var/cache/ln.skyscanner"))
                .Add(0, "import-skytron", null)
                .Add(0, "benchmark", null)
                .Add(0, "debug-check", null)
                .Add("disable-checker")
                .Add(0, "crawl-vendor", null)
                .Add(0, "crawl", null)
                ;


            Logging.Log(LogLevel.INFO, "SkyScanner: Constructor");
            BasePath = Arguments["base-path"].Value;
            Logging.Log(LogLevel.INFO, "SkyScanner: BasePath={0}", BasePath);

            ConveniencePool = new Pool();
        }

        public override void PrepareStart()
        {
            base.PrepareStart();

            FileLogger fileLogger = new FileLogger("skyscanner.log");
            fileLogger.MaxLogLevel = (LogLevel)Enum.Parse(typeof(LogLevel), Arguments["log-level"].Value);
            Logger.Default.Backends.Add(fileLogger);

            if (Arguments["import-skytron"].IsSet)
            {
                //SkytronImport si = new SkytronImport(Arguments["import-skytron"].Value);
                //si.Import();
            }

            if (Arguments["benchmark"].IsSet)
            {
                switch (Arguments["benchmark"].Value)
                {
                    case "odb":
                        BenchmarkODB();
                        break;
                    default:
                        Logging.Log(LogLevel.ERROR, "Unknown Benchmark: {0}", Arguments["benchmark"].Value);
                        break;
                }
                throw new Exception("Quitting after benchmarking");
            }
            /*
                        if (crawlHost != null)
                        {
                            CrawlHost(crawlHost);
                            throw new Exception("Quitting after --crawl");
                        }

                        if (debugCheckNode != null)
                        {
                            DebugCheck(debugCheckNode);
                            throw new Exception("Quitting after --debug-check");
                        }
                        */

            ServiceContainer.Add(ServiceDefinition.From<Service>(true));
            ServiceContainer.Add(ServiceDefinition.From<EntityService>(true));
            ServiceContainer.Add(ServiceDefinition.From<CheckService>(true));
            ServiceContainer.Add(ServiceDefinition.From<CrawlService>(true));
            ServiceContainer.Add(ServiceDefinition.From<PerformanceValueService>(true));
        }


        public class Service : ApplicationServiceBase
        {
            public ApplicationWebSocket webSocketInterface { get; private set; }
            public RPCContainer RPCContainer { get; private set; }

            public Service()
                : base("SkyScanner Application Service")
            {
                RPCContainer = new RPCContainer();
            }

            public override void ServiceMain(IApplicationInterface applicationInterface)
            {
                DirectoryResource staticTemplates = new DirectoryResource(new string[] { "../../www", "www" });

                staticTemplates.ResourceTypeHook = ResourceTypeHook;
                staticTemplates.DefaultResource = staticTemplates.GetResource("index.html");
                staticTemplates.FallBackResource = staticTemplates.DefaultResource;

                staticTemplates.GetResource("vue").DefaultResource = staticTemplates.GetResource("vue").GetResource("vue.html");
                staticTemplates.GetResource("vue").FallBackResource = staticTemplates.GetResource("vue").DefaultResource;

                applicationInterface.HTTPApplication.RootResource = staticTemplates;

                webSocketInterface = new ApplicationWebSocket(null, "socket", RPCContainer);
                staticTemplates.InjectResource(webSocketInterface);

                RPCContainer.Add("", new SkyScannerRpc(this));
                RPCContainer.Add("ServiceContainer",applicationInterface.ServiceContainer.RPC);

                long nextCycle = DateTimeOffset.Now.ToUnixTimeMilliseconds();

                Ready();

                while (!StopRequested)
                {
                    while ((nextCycle - DateTimeOffset.Now.ToUnixTimeMilliseconds()) < 0)
                        nextCycle += 1000;

                    try
                    {
                        int timeOut = (int)(nextCycle - DateTimeOffset.Now.ToUnixTimeMilliseconds());
                        if (timeOut > 0)
                            Thread.Sleep(timeOut);
                    }
                    catch (ThreadInterruptedException)
                    {
                        if (StopRequested)
                            break;
                    }

                    /* Send Application State to WebSockets */

                    JSONObject msg = new JSONObject();
                    JSONObject stateObject = new JSONObject();
                    stateObject.Add("currentTime", DateTimeOffset.Now.ToUnixTimeMilliseconds());

                    msg["state"] = stateObject;

                    webSocketInterface.Broadcast(msg);
                }

            }

            private Resource ResourceTypeHook(DirectoryResource directoryResource, FileInfo fileInfo)
            {
                if (fileInfo.Extension.Equals(".html"))
                    return new TemplateResource(directoryResource, fileInfo.FullName);

                return null;
            }

            class SkyScannerRpc
            {
                Service skyscannerService;

                public SkyScannerRpc(Service skyscannerService)
                {
                    this.skyscannerService = skyscannerService;
                }

                public string GetServerString()
                {
                    return "SkyScanner 0.1a";
                }

                public void Shutdown()
                {
                    ThreadPool.QueueUserWorkItem((state) => ((Application)this.skyscannerService.CurrentApplicationInterface).Stop());
                }



            }


        }

        public void BenchmarkODB()
        {
            //int maxIterations = 10000;

            //for (int i = 0; i < maxIterations; i++)
            //{
            //    int n = 0;
            //    Logging.Log(LogLevel.INFO, "Benchmark ODB: Iteration {0} of {1}", i, maxIterations);

            //    foreach (SkyCheckState checkState in SkyScanner.Instance.Entities.SkyCheckStates.ToArray())
            //    {
            //        SkyScanner.Instance.Entities.SkyCheckStates.Upsert(checkState);
            //        n++;
            //    }

            //    Logging.Log(LogLevel.INFO, "Saved {0} SkyCheckStates", n);

            //}

        }

        public void CrawlHost(IPv4 ip)
        {
            //Logger.ConsoleLogger.MaxLogLevel = LogLevel.DEBUGFULL;

            //CrawledHost crawledHost = new CrawledHost();
            //crawledHost.Name = ip.ToString();
            //crawledHost.PrimaryIP = ip;
            //crawledHost.IPAddresses = new IPv4[] { ip };

            //Crawl crawl = new Crawl(Crawler, crawledHost);
            //crawl.Prepare();
            //crawl.RunJob();

            //Logging.Log(LogLevel.INFO, "CrawledHost: {0}", JSONObject.From(crawledHost).ToString());

        }

        public void DebugCheck(String uniqueID)
        {
            //Logger.ConsoleLogger.MaxLogLevel = LogLevel.DEBUGFULL;

            //Node node = Entities.NodeCollection.Query("uniqueIdentity", uniqueID).FirstOrDefault();
            //if (node == null)
            //{
            //    Logging.Log(LogLevel.INFO, "DebugCheck(): Node not found: uniqueIdentity={0}", uniqueID);
            //}
            //else
            //{
            //    Logging.Log(LogLevel.INFO, "DebugCheck(): Node: {0}",JSONObject.From(node).ToString());
            //    CheckJob checkJob = new CheckJob(null, node);

            //    Logging.Log(LogLevel.INFO, "Prepare...");
            //    checkJob.Prepare();

            //    Logging.Log(LogLevel.INFO, "Check...");
            //    checkJob.RunJob();
            //}

        }

    }
}