using System;
using System.Collections.Generic;
using System.Linq;
using Sog;
using Google.Protobuf.WellKnownTypes;

namespace SMCenter
{
    // 
    public class ShellAgentResult
    {
		public ResResultCode ResultCode;
		public string Result;
        public string Message;
    }

    //执行shell命令
    //调用的是bash
    //请不要执行不会退出的命令，比如top之类的，没处理这样情况，会挂掉的
    public class ShellCmdProc : BaseCmdProc
    {
        private Dictionary<string, ShellAgentResult> m_agents = new Dictionary<string, ShellAgentResult>();

        private long m_startCancelTime = 0;

		public override void ClearData()
		{
			m_nowCmd = null;
			m_agents.Clear();
			m_startCancelTime = 0;
		}

		public override int DoCmd(out string msg)
        {
            try
            {
                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);

                var req = new SMAgentDoCommandReq();
                req.Command = m_nowCmd.CMD;
                req.SeqNum = m_nowCmd.SeqNum;
                req.ExeFileName = "bash";
                req.CmdArgs = string.Empty;

                for (int i = 1; i < m_nowCmd.CmdParams.Count; i++)
                {
                    req.CmdArgs += m_nowCmd.CmdParams[i];

                    if (i != m_nowCmd.CmdParams.Count - 1)
                    {
                        req.CmdArgs += " ";
                    }
                }

                foreach (var name in m_nowCmd.m_procs.Values.Select(p => p.SMApp.HostName).Distinct())
                {
                    m_agents.Add(name, new ShellAgentResult() );

                    var client = SMCenterNet.Instance.GetClientInfoByName(name);
                    if (client == null)
                    {
                        TraceLog.Error("ShellCmdProc.DoCmd agent {0} not register", name);

                        m_agents[name].Result = "failed";
                        m_agents[name].Message = "no connected agent";
                        continue;
                    }

                    SMCenterNet.Instance.SendMsg(client, SMMsgID.AgentDoCommandReq, req);
                }                
            }
            catch (Exception e)
            {
                TraceLog.Exception(e);
                msg = "ShellCmdProc.DoCmd throw a exception ...";
                return -1;
            }

            msg = string.Empty;
            return 0;
        }


        public override int UpdateCmd(long tMs)
        {
            if(m_startCancelTime > 0 && tMs - m_startCancelTime > 5000)
            {
                //超时退出
                return 0;
            }

            bool allFinish = true;
            int successCount = 0;
            int failedCount = 0;

            foreach(var agent in m_agents)
            {
                if(agent.Value.ResultCode == ResResultCode.Success)
                {
                    successCount++;
                }
                else
                {
                    failedCount++;
                }

                if(agent.Value.ResultCode == ResResultCode.Running)
                {
                    allFinish = false;
                    break;
                }

                if(agent.Value.ResultCode == ResResultCode.NoRes)
                {
                    allFinish = false;
                    break;
                }
            }

            if(allFinish)
            {
                var res = new SMConsoleCommandRes();
                res.Command = m_nowCmd.CMD;
                res.Message = string.Format("shell cmd {0} finish. succ {1} failed {2}", m_nowCmd.ConsoleInput, successCount, failedCount);
                SMCenterNet.Instance.SendMsg(m_nowCmd.SessionId, SMMsgID.ConsoleCommandRes, res);

                return 0;
            }

            return 1;
        }

        public override void OnAgentDoCommandRes(ClientInfo client, SMAgentDoCommandRes res)
        {
            TraceLog.Trace("ShellCmdProc.OnAgentDoCommandRes cmd {0} res from {1}", 
                m_nowCmd.CMD, client.HostName);

            if(m_agents.ContainsKey(res.HostName) == false)
            {
                TraceLog.Error("ShellCmdProc.OnAgentDoCommandRes cmd {0} res no agent {1}",
                    m_nowCmd.CMD, client.HostName);
                return;
            }

            var info = m_agents[res.HostName];
			info.ResultCode = res.ResultCode;
            info.Result = res.Result;
            info.Message = res.AddInfo;

            var consoleres = new SMConsoleCommandRes();
            consoleres.Nonewline = 1;
            consoleres.Command = m_nowCmd.ConsoleInput;

            if(res.ResultCode == ResResultCode.Running)
            {
                consoleres.Message = string.Format("host {0} ack \n{1} {2}", res.HostName, res.Result, res.AddInfo);
            }
            else
            {
                consoleres.Message = string.Format("shell cmd host {0} finish. Msg: \n{1} {2}", res.HostName, res.Result, res.AddInfo);
            }
            

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

        public int DoCancel(out string msg)
        {
            msg = "success";

            var req = new SMAgentDoCommandReq();
            req.Command = "cancelshell";
            req.SeqNum = m_nowCmd.SeqNum;
            req.CmdArgs = string.Empty;

            foreach (var agent in m_agents)
            {
                var client = SMCenterNet.Instance.GetClientInfoByName(agent.Key);
                if (client == null)
                {
                    TraceLog.Error("ShellCmdProc.DoCancel agent {0} not register", agent.Key);
					agent.Value.ResultCode = ResResultCode.Fail;
					agent.Value.Result = "failed";
                    agent.Value.Message = "no connected agent";
                    continue;
                }

                SMCenterNet.Instance.SendMsg(client, SMMsgID.AgentDoCommandReq, req);
            }

            return 0;
        }
    }
    
}