namespace EnterprizeV4.Models
{
    using CounsellorBL;
    using CounsellorBL.BLStructure;
    using CounsellorBL.Helper;
    using DefenseWeb.Models;
    using MonumentDefine;    
    using OT.COM.LogisticsUtil;
    using OT.COM.SignalerMessage;
    using System;
    using System.Collections.Concurrent;
    using System.Collections.Generic;
    using System.Linq;
    using System.Reflection;
    
    public class CmdService : AApiServiceBase
    {
        static readonly ConcurrentDictionary<string, Type> _dicTypeMapping = new ConcurrentDictionary<string, Type>();
   
        public CResponsePack GetData(CReqestPack i_crpRequest, ControllDataPack i_cdp)
        {
            List<CResponseMessage> lcrmr = new List<CResponseMessage>();

            foreach (CReqestItem cri in i_crpRequest.reqs)
            {
                CRequestMessage crm = cri.req;
                crm.token = i_crpRequest.token;

                try
                {
                    crm.clientip = i_cdp.GetIP;
                    crm.system_param.Add(typeof(ControllDataPack).Name, i_cdp);
                    CResponseMessage crp = HandleRequest(crm);
#if DEBUG
                    if (!string.IsNullOrEmpty(crp.msg))
                    {
                        System.Diagnostics.Debug.WriteLine($"***************** {nameof(GetData)}  module={crm.module} method={crm.method} Fail!! msg={crp.msg}");
                    }
#endif

                    lcrmr.Add(crp);
                }
                catch (Exception ex)
                {                    
                    lcrmr.Add(new CErrorResponseMessage(Util.GetLastExceptionMsg(ex)));
                }
            }

            return new CResponsePack() { reps = lcrmr };
        }

        protected override CResponseMessage HandleRequest(CRequestMessage i_joRequest)
        {
            CResponseMessage crmRes;
            try
            {
                do
                {
                    if (i_joRequest == null || string.IsNullOrEmpty(i_joRequest.method) || string.IsNullOrEmpty(i_joRequest.module))
                    {
                        crmRes = new CErrorResponseMessage(MessageWording.MTHOD_MISS, i_joRequest);
                        break;
                    }


                    string sModuleName = null;
                    string[] saModule = i_joRequest.module.Split(".".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
                    Type tCur = null;
                    const string SERVICE = "Service";
                    sModuleName = saModule[^1];

                    if(!sModuleName.EndsWith(SERVICE))
                    {
                        sModuleName += SERVICE;
                    }

                    if (_dicTypeMapping.ContainsKey(sModuleName) )
                    {
                        tCur = _dicTypeMapping[sModuleName];
                    }
                    else
                    {
                        Logger.Debug("Not in _dicTypeMapping");
                        tCur = GetCustomTypeByTypeName(sModuleName, typeof(ServiceBase));
                        if (tCur == null)
                        {
                            AssemblyHelper.Load(Assembly.GetExecutingAssembly(), "CounsellorBL.*.dll");

                            tCur = GetCustomTypeByTypeName(sModuleName, typeof(ServiceBase));
                        }

                        if (tCur != null)
                        {
                            Logger.Debug("Load assembly success and add to _dicTypeMapping");
                            _dicTypeMapping.TryAdd(sModuleName, tCur);
                        }
                        else
                        {
                            Logger.Debug("Load assembly fail.");
                            crmRes = new CErrorResponseMessage("Find Type fail", i_joRequest);
                            break;

                        }
                    }

                    object oModule = ClassHelper.GetInstByType(tCur);

                    if (oModule == null)
                    {
                        crmRes = new CErrorResponseMessage("Create service fail", i_joRequest);
                        break;
                    }



                    if (!(oModule is ServiceBase bls))
                    {
                        crmRes = new CErrorResponseMessage(BLWording.COVERT_FAIL, i_joRequest);
                        break;
                    }
                    bls.OriRequest = i_joRequest;
                    crmRes = bls.Entry(i_joRequest);


                }
                while (false);
            }
            catch (Exception ex)
            {
                crmRes = new CErrorResponseMessage(Util.GetLastExceptionMsg(ex), i_joRequest);
            }
            return crmRes;
        }

        public Type GetCustomTypeByTypeName(string i_sTypeName, Type i_tBaseClass = null)
        {
            Type type = null;
            string codeBase = Assembly.GetExecutingAssembly().GetName().CodeBase;
            codeBase = codeBase.Substring(0, codeBase.LastIndexOf("/"));

            Assembly[] assemblyArray = (from f in AppDomain.CurrentDomain.GetAssemblies()
                                        where !f.IsDynamic
                                        && f.FullName.IndexOf("CounsellorBL", StringComparison.OrdinalIgnoreCase) != -1
                                        && f.CodeBase != null
                                        && f.CodeBase.StartsWith(codeBase, StringComparison.OrdinalIgnoreCase)
                                        select f).ToArray<Assembly>();



            foreach (Assembly assembly2 in assemblyArray)
            {

                type = i_tBaseClass != null ?
                    assembly2.GetTypes().FirstOrDefault(x => x.IsClass  && x.IsSubclassOf(i_tBaseClass) && x.Name == i_sTypeName) :
                    assembly2.GetTypes().FirstOrDefault(x => x.IsClass  && x.Name == i_sTypeName);
                if (type != null)
                {
                    break;
                }
            }
            return type;
        }

    }
}