var env = process.env.NODE_ENV || 'development'; 
var cfg = require('../../config/config.js').get(env);
var stats = require('../helper/stats.js'); 
var request = require('request');
var messageSOAP = require('../helper/messageSOAP.js'); 

var log = require('../helper/log.js');

var constants = require('../helper/constants.js');

var connection = [];

connection.requestSoapToSACF = async function (soap,cmd,myMethod) {

    var service = cfg.service.SACF;
    var retry = service[myMethod+"_"+cmd+"_Retry"];    

    var params = {
        url                 : service[myMethod+"_"+cmd+"_URL"],
        body                : messageSOAP.objectToSOAP(soap,cmd),
        method              : myMethod,
        timeout             : cfg.service.SACF[myMethod+"_"+cmd+"_Timeout"]*1000

    }

    if(!retry)                
        retry = cfg.Default_Retry;

    var objectData = {

        maxRetry : retry,

        curRetry : 1

    }
    

    var funS = function(){

        stats.sendSACFRequest(service.Name,cmd);
        log.logDetail.addOutput(service.Name,myMethod+"_"+cmd,constants.REQUEST,params,soap);
    };
    
    var funStats = {

        start : funS,

        error : function(response){log.addErrorSummary(service.Name,myMethod+"_"+cmd,response);}
    };

    var result = await asyncRequest(params,objectData,funStats);

    // if(result.err)
    // {
    //     // result.response = {};
    //     // result.response.resultCode = constants.RESPONSERESULT.ERROR;

        
    //     if(result.err.code == constants.RESPONSECONN.STATS.ETIMEDOUT){
    //         result.response = constants.RESPONSECONN.MESSAGE.ETIMEDOUT;
    //         // result.response.resultCode = "50003";
    //         // result.response.resultDescription = "Timeout";
    //     } else if(result.err.code == constants.RESPONSECONN.STATS.ECONNREFUSED){
    //         result.response = constants.RESPONSECONN.MESSAGE.ECONNREFUSED;
    //         // result.response.resultCode = "50002";
    //         // result.response.resultDescription = "Reject";
    //     } else {
    //         result.response = constants.RESPONSECONN.MESSAGE.ERROR;
    //         // result.response.resultCode = "50000";
    //         // result.response.resultDescription = "System error";
    //     }
    //     stats.receiveResponse(service.Name,cmd,constants.ERROR);
    // }

    return checkResponse(result,service,params,cmd);
};

connection.requestJsonToD01 = async function (obj,cmd,myMethod) {

    var service = cfg.service.D01;    
    var retry = service[myMethod+"_"+cmd+"_Retry"];
    if(!retry)                
        retry = cfg.Default_Retry;

    var objectData = {
        maxRetry : retry,
        curRetry : 1
    }

    // JSON.stringify(json)
    var params = {
        url                 : service[myMethod+"_"+cmd+"_URL"],
        body                : obj,
        method              : myMethod,
        timeout             : service[myMethod+"_"+cmd+"_Timeout"]*1000
    }

    var funStats = function(){
        stats.sendRestRequest(service.Name,myMethod,cmd);

        log.logDetail.addOutput(service.Name,myMethod+"_"+cmd,constants.Request,params,obj);
    };

    var funStats = {

        start : funStats,

        error : function(response){log.addErrorSummary(service.Name,myMethod+"_"+cmd,response);}

    };

    var result = {};
    result.response = {};

    result.response.resultData = [];

    

    if(params.method == constants.METHOD.GET)

    {

        var genUrl = getUrl(params,service[myMethod+"_Limit"]);

        // genUrl.push(genUrl[0].replace("8080","8081"));        

        if(genUrl.length > 1)

        {

            // console.log("multi Send");
            var multiSend = [];
            for(var i=0;i<genUrl.length;i++)

                multiSend.push({url:genUrl[i],method:params.method});

        
            var parallelRes = await parallelRequest(multiSend,objectData,funStats); 

            var dataRes = {};
            for(var i=0;i<multiSend.length;i++)
            {
                // console.log("start loop");

                var loopRes = parallelRes[i];

                
                if(loopRes.response)
                {
                    var data = JSON.parse(loopRes.response.body);

                    dataRes[i] = {};

                    if(!data.resultCode)
                        dataRes[i].err = "Miss resultCode";

                    if(!data.resultDescription)
                        dataRes[i].err = "Miss resultDescription"

                    dataRes[i].data = data.resultData;

                }

            }

            for (var i = 0; i < multiSend.length; i++) {
                    
                result.response.resultData = result.response.resultData.concat(dataRes[i].data);
                if(dataRes[i].err)
                    result.err = dataRes[i].err;
            }

            if(!result.err)
            {
                result.response = constants.RESPONSECONN.MESSAGE.SUCCESS;
                // result.response.resultCode = "20000";
                // result.response.developerMessage = "Success";
            }

            
        }else
        {
            // console.log("single Send");
            params.url = genUrl[0];
            delete params.body;

            var resultRes = await asyncRequest(params,objectData,funStats);

            // console.log(resultRes);

            if(resultRes.response)
            {
                var data = JSON.parse(resultRes.response.body);
                result.response = data;
               
            } else {
                result = resultRes;
            }
        }

        

    }else if(params.method == constants.METHOD.POST)
    {

        params.body = JSON.stringify(params.body);

        var resultRes = await asyncRequest(params,objectData,funStats);

        if(resultRes.response){

            result.response = JSON.parse(resultRes.body);
        } else {

            result = resultRes;
        }
    }

    // console.log(result);
    
    if(result.response)
    {
        if(!result.response.resultCode){
            result.err = "Missing resultCode";
        } else if(!result.response.resultDescription){
            result.err = "Missing resultDescription";
        }
    }

    return checkResponse(result,service,params,cmd);
};



async function parallelRequest(multiParams,objectData,funStat)

{
   
    var promises = [];

    for(var i=0;i<multiParams.length;i++)
        promises.push(asyncRequest (multiParams[i],objectData,funStat));

    var res = await Promise.all(promises);
    // for(var i=0;i<res.length;i++)
    // {
    //     if(!res[i].err)

    //         stats.receiveResponse(node,cmd,"Success");

    // }


    return res;

}

function asyncRequest (params = {},objectData,funStat) {

    // console.log(objectData);  
    funStat.start();

    // console.log("Start : "+new Date().toISOString());

    return new Promise((resolve, reject) => {
        request(params, function (error, response, body) {

            if (error) {

                if( objectData.maxRetry == objectData.curRetry-1)
                {

                    resolve({

                        'body'  : body,
                        'err'   : error
                    });
                }else
                {
                    var errRes = {};
                    if(error.code == 'ETIMEDOUT'){

                        errRes.resultCode = "50003";

                        errRes.resultDescription = "Timeout";
                    } else if(error.code == 'ECONNREFUSED'){
                        errRes.resultCode = "50002";
                        errRes.resultDescription = "Reject";
                    } else {
                        errRes.resultCode = "50000";
                        errRes.resultDescription = "System error";
                    }

                    // console.log("retry "+objectData.curRetry);
                    funStat.error(errRes);                    
                    objectData.curRetry++; 
                    resolve(asyncRequest(params,objectData,funStat));
                }
                
                

            } else {

                // stats.receiveResponse(node,cmd,"Success");

                resolve({
                    'body'      : body,

                    'response'  : response

                });

            }
        });

    });
};

function getUrl(params,limit)
{
    var returnData = [];
    var url = params.url;

    var fields = "";

    var filter = {

        base : "",
        multi : []
    };
    
    
    // params.body = {};
    // params.body.a = "aaa";
    // params.body.b = "bbb";
    // params.body.papa = [];

    // params.body.papa.push("1");

    // params.body.papa.push("2");
    // params.body.commandId = [];
    // params.body.commandId.push("1");
    // params.body.commandId.push("2");
    // params.body.commandId.push("3");

    // params.body.commandId.push("4");
    // params.body.commandId.push("5");

    // params.body.commandId.push("6");

    // params.body.commandId.push("7");

    // params.body.commandId.push("8");    
    // params.body.c = "ccc";

    // params.body.fields = "a,b,c,d";

    // console.log(params.body);  
    if(params.body)

    {

        var first = true;

        for (key in params.body) {

            if(key == "fields")

                fields = getFields(params.body.fields,first);

            else
                filter = getFilter(filter,key,params.body[key]);

            first = false;

        }

        if(first)

            fields += "?limit="+limit;
        else

            fields += "&limit="+limit;
        

    }   

    if(filter.multi.length > 0)
    {
        //have multi

        var careData = filter.multi[0];
        // console.log(freeSpace);

        for(var i=0;i<filter.multi.length;i++)

        {

            if(filter.multi[i].length > careData.length)

            {
                filter.base = filter.base+"(|"+careData.data+")";
                careData = filter.multi[i];
                

            }
               

        }


        var myUrl = url+"?filter=("+filter.base+")"+fields;
        var freeSpace = cfg.Uri_length - myUrl.length;

        var arr = careData.data.split(")(");
            

        for(var j=0;j<arr.length;j++)
        {
            if(j==0)

                arr[j] = arr[j].substring(1);

            if(j==arr.length-1)

                arr[j] = arr[j].substring(0,arr[j].length-1);

            arr[j] = "("+arr[j]+")";
                // returnData.push(url+"?filter=("+newBasefilter+"(|"+arr[j]+")"+fields);
        }

        returnData = arrayUrl(returnData,url,filter.base,fields,freeSpace,arr);

    }else

    {

        var myUrl = url+"?filter=("+filter.base+")"+fields;

        returnData.push(myUrl);

    }

    // console.log(url);
    // console.log(filter);
    // console.log(fields);

    console.log(returnData);

    return returnData;
}

function getFields(fields,first)

{

    var returnData;

    var prefix;

    if(first)
        prefix = "?fields=";
    else
        prefix = "&fields=";

    returnData = prefix+fields;

    return returnData;

}

function getFilter(filter,key,data)
{

    // console.log(key);

    // console.log(newfilter);
    if(!Array.isArray(data))

    {

        // var newfilter = {
        //     data : "("+key+"="+data+")",
        //     type : "single",

        //     length : ("("+key+"="+data+")").length

        // };

        if(filter.base != "")    

            filter.base = filter.base+"("+key+"="+data+")";

        else

            filter.base = "&"+filter.base+"("+key+"="+data+")";

    }else

    {
        var line = "";
        for(var i=0;i<data.length;i++)

        {

            line += "("+key+"="+data[i]+")";

        }

        var newfilter = {
            data : line,
            length : line.length

        };
    }

    if(newfilter)
        filter.multi.push(newfilter);

    return filter;

}

function arrayUrl(arrUrl,url,filter,fields,freeSpace,arrData)

{
    var loopUrl = "";

    var loopSpace = freeSpace;
    for(var i=0;i<arrData.length;i++)

    {
        if(loopSpace > (arrData[i].length+3))
        {

            loopUrl = loopUrl + arrData[i];

            loopSpace = loopSpace - arrData[i].length;

        }else

        {
            if(loopUrl != "")
            {

                arrUrl.push(url+"?filter=("+filter+"(|"+loopUrl+")"+fields);

                loopUrl = arrData[i];

                loopSpace = freeSpace - arrData[i].length;

            }

            
        }

    }

    if(loopUrl != "")
        arrUrl.push(url+"?filter=("+filter+"(|"+loopUrl+")"+fields);
    return arrUrl;
}

function checkResponse(result,service,params,cmd)
{
    if(result.err)
    {
        if(result.err.code == constants.RESPONSECONN.STATS.ETIMEDOUT){
            result.response = constants.RESPONSECONN.MESSAGE.ETIMEDOUT;
            // result.response.resultCode = "50003";
            // result.response.resultDescription = "Timeout";
        } else if(result.err.code == constants.RESPONSECONN.STATS.ECONNREFUSED){
            result.response = constants.RESPONSECONN.MESSAGE.ECONNREFUSED;
            // result.response.resultCode = "50002";
            // result.response.resultDescription = "Reject";

        } else {

            if(result.err.indexOf(constants.RESPONSECONN.STATS.MISSING) != -1){

                result.response.resultCode = constants.RESPONSERESULT.MISSING_INVALID.resultCode;
                result.response.resultDescription = result.err;
            } else {
                result.response = constants.RESPONSECONN.MESSAGE.ERROR;
            }
        }

        if(result.response.resultCode == constants.RESPONSERESULT.MISSING_INVALID.resultCode){

            stats.receiveBadRestResponse(service.Name,params.method,cmd);

        } else {
            stats.receiveResponse(service.Name,cmd,constants.ERROR);
        }

    }

    return result;

}

module.exports = connection;