using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;

using Sog;
using Google.Protobuf.WellKnownTypes;
using FileTransDataObject;

namespace SMCenter
{
    public class CheckAgentCmdProc : BaseCmdProc
    {
        private long LastCheckTimeoutSecond;

        public override void ClearData()
        {
            m_nowCmd = null;
        }

        public override int DoCmd(out string msg)
        {
            if (m_nowCmd.CmdParams.Count < 1 || string.IsNullOrEmpty(m_nowCmd.CmdParams[0]))
            {
                msg = "invalid cmd param";
                return -1;
            }

            if (CmdUtils.CheckValidServerId(m_nowCmd.CmdParams[0], out string fixSvrId) == false)
            {
                msg = "invalid server id";
                return -1;
            }

            if (fixSvrId != null)
            {
                m_nowCmd.CmdParams[0] = fixSvrId;
            }

            SMProcAppMgr.Instance.GetAllMatchingProc(m_nowCmd.CmdParams[0], m_nowCmd.m_procs);
            m_nowCmd.m_procs = m_nowCmd.m_procs.OrderBy(o => o.Value.SMApp.HostName).ToDictionary(p => p.Key, o => o.Value);

            msg = "";
            int ret = 0;
            var fileList = new List<FileData>();
            switch (m_nowCmd.CMD)
            {
                case "checkagent":
                    ret = GetAgentFile(fileList, out msg);
                    break;
                case "checkpushfile":
                    ret = GetPushFile(fileList, out msg);
                    break;
            }

            if (ret != 0)
            {
                return -1;
            }

            // 上面算完文件列表后再对procs去重, 否则会少算文件
            CmdProcInfoDistinct();

            SendCmdToHost(fileList);
            return 0;
        }

        // 检测agent运行目录下的dll和pdb
        private int GetAgentFile(List<FileData> fileList, out string msg)
        {
            // center和agent的部署层级是一样的, center的运行目录就是agent的运行目录
            string dllPath = Path.Combine(SMCenterUtils.Config.centerPush, "SMAgent.dll");
            var dll = FileUtils.CreateFileData(dllPath, false);
            if (dll == null)
            {
                msg = string.Format("{0} not exist", dllPath);
                return -1;
            }

            string pdbPath = Path.Combine(SMCenterUtils.Config.centerPush, "SMAgent.pdb");
            var pdb = FileUtils.CreateFileData(pdbPath, false);
            if (pdb == null)
            {
                msg = string.Format("{0} not exist", pdbPath);
                return -1;
            }

            dll.writeFilePath = Path.GetFullPath("../bin");
            fileList.Add(dll);

            pdb.writeFilePath = Path.GetFullPath("../bin");
            fileList.Add(pdb);

            msg = "";
            return 0;
        }

        //主要检测服务器运行需要的 cfg文件和bin 文件
        private int GetPushFile(List<FileData> fileList, out string msg)
        {
            int ret = CmdUtils.GetPushBinFile(m_nowCmd, fileList, false);
            if (ret == -1)
            {
                msg = "GetPushBinFile fail";
                return -1;
            }

            ret = CmdUtils.GetPushCfgFile(m_nowCmd, fileList, false);
            if (ret == -1)
            {
                msg = "GetPushCfgFile fail";
                return -1;
            }

            msg = "";
            return 0;
        }


        public override int UpdateCmd(long tMs)
        {
            if (m_nowCmd.m_procs.Count == 0)
            {
                return 0;
            }

            if (IsAllProcCmdAcked())
            {
                return 0;
            }

            CheckProcTimeout(tMs);
            return 1;
        }

        private void SendCmdToHost(List<FileData> fileList)
        {
            var req = new SMAgentDoCommandReq();
            req.Command = m_nowCmd.CMD;
            req.SeqNum = m_nowCmd.SeqNum;
            foreach (FileData file in fileList)
            {
                var attr = new FileAttr
                {
                    FileMd5 = file.fileMd5,
                    FileName = file.fileName,
                    FileSize = file.FileSize,
                    FilePath = file.writeFilePath,
                    FileTime = file.fileWriteTime.ToFileTimeUtc()
                };
                req.FileList.Add(attr);
            }

            foreach (var cmdInfo in m_nowCmd.m_procs.Values)
            {
                if (cmdInfo.SendCmdToHostTime == 0)
                {
                    req.ServerId = cmdInfo.SMApp.AppId;
                    cmdInfo.SendCmdToHostTime = SMCenterUtils.GetTimeSecond();

                    ClientInfo client = SMCenterNet.Instance.GetClientInfoByName(cmdInfo.SMApp.HostName);
                    if (client != null)
                    {
                        client.SendMsg(req, SMMsgID.AgentDoCommandReq);
                    }
                }
            }
        }

        public override void OnAgentDoCommandRes(ClientInfo client, SMAgentDoCommandRes res)
        {
            if (m_nowCmd.SeqNum != res.SeqNum)
            {
                TraceLog.Error("CheckAgentCmdProc.OnAgentDoCommandRes CMD {0} svrId {1} seq not same, local {2} res {3}"
                    , res.Command, res.ServerId, m_nowCmd.SeqNum, res.SeqNum);
                return;
            }

            if (m_nowCmd.m_procs.ContainsKey(res.ServerId) == false)
            {
                TraceLog.Error("CheckAgentCmdProc.OnAgentDoCommandRes CMD {0} serverId {1} not in m_procs, skip"
                    , res.Command, res.ServerId);
                return;
            }

            CmdProcInfo proc = m_nowCmd.m_procs[res.ServerId];
            proc.AckResultCode = res.ResultCode;
            proc.AckMessage = res.Result;
            proc.AckAddInfo = res.AddInfo;

            if (IsAllProcCmdAcked())
            {
                AckConsoleCmdResult();
            }

            TraceLog.Trace("CommCmdProc.OnAgentDoCommandRes CMD {0} agent {1}, result {2}"
                , res.Command, res.HostName, res.Result);
        }

        private void CheckProcTimeout(long tMs)
        {
            long nowSecond = tMs / 1000;

            if (nowSecond - LastCheckTimeoutSecond < 2)
            {
                return;
            }

            LastCheckTimeoutSecond = nowSecond;

            foreach (var cmdInfo in m_nowCmd.m_procs.Values)
            {
                if (cmdInfo.SendCmdToHostTime > 0 && cmdInfo.AckResultCode == ResResultCode.NoRes)
                {
                    int timeoutSecond = 15;
                    if (nowSecond - cmdInfo.SendCmdToHostTime > timeoutSecond)
                    {
                        TraceLog.Error("CheckAgentCmdProc.CheckProcTimeout cmd {0} serverid {1} timeout"
                            , m_nowCmd.CMD, cmdInfo.SMApp.ServerIDStr);

                        cmdInfo.AckResultCode = ResResultCode.TimeOut;

                        if (IsAllProcCmdAcked())
                        {
                            AckConsoleCmdResult();
                        }
                    }
                }
            }
        }

        private bool IsAllProcCmdAcked()
        {
            foreach (var proc in m_nowCmd.m_procs)
            {
                if (proc.Value.AckResultCode == ResResultCode.NoRes)
                {
                    return false;
                }
            }

            return true;
        }

        private void AckConsoleCmdResult()
        {
            SMConsoleCommandRes res = new SMConsoleCommandRes();
            res.Command = m_nowCmd.ConsoleInput;
            res.Message = "";
            List<string> hostName = new List<string>();
            foreach (var procInfo in m_nowCmd.m_procs)
            {
                string procResult = "";
                if (! hostName.Contains(procInfo.Value.SMApp.HostName))
                {
                    procResult += string.Format("\n--------------- HostName:{0} ---------------", procInfo.Value.SMApp.HostName);
                    hostName.Add(procInfo.Value.SMApp.HostName);
                }

                procResult += "\n    " + procInfo.Value.SMApp.HostName + "\t";

                switch (procInfo.Value.AckResultCode)
                {
                    case ResResultCode.NoRes:
                        procResult += "NoRes";
                        break;
                    case ResResultCode.TimeOut:
                        procResult += "timeout";
                        break;
                    case ResResultCode.Success:
                        procResult += "success";
                        break;
                    case ResResultCode.Fail:
                        procResult += "Fail";
                        break;
                    case ResResultCode.Exception:
                        procResult += "Exception";
                        break;
                    case ResResultCode.Running:
                        procResult += "Running";
                        break;
                    case ResResultCode.NotRunning:
                        procResult += "Not Running";
                        break;
                    default:
                        break;
                }

                //不会空的情况下定义为错误信息
                if (string.IsNullOrEmpty(procInfo.Value.AckMessage) == false)
                {
                    procResult += "\n" + procInfo.Value.AckMessage;
                }

                if (string.IsNullOrEmpty(procInfo.Value.AckAddInfo) == false)
                {
                    procResult += "\n" + procInfo.Value.AckAddInfo;
                }

                res.Message += procResult;
            }

            SMCenterNet.Instance.SendMsg(m_nowCmd.SessionId, SMMsgID.ConsoleCommandRes, res, m_nowCmd.HttpId);
        }
    }
}