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 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 funStats = function(){

        stats.sendSACFRequest(service.Name,cmd);

        log.logDetail.addOutput(service.Name,cmd,"Request",params,soap);
    };
    
    var funStats = {
        start : funStats,

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

    };

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

    if(result.err)

    {
        result.response = {};
        result.response.resultCode = "50000";

        //ETIMEDOUT = timeout
        //ECONNREFUSED = servercode

        if(result.err.code == 'ETIMEDOUT'){
            result.response.resultCode = "50003";
            result.response.resultDescription = "Timeout";
        } else if(result.err.code == 'ECONNREFUSED'){
            result.response.resultCode = "50002";
            result.response.resultDescription = "Reject";
        } else {
            result.response.resultCode = "50000";
            result.response.resultDescription = "System error";
        }
        stats.receiveResponse(cfg.service.SACF.Name,cmd,"Error");
    }

    return result;
};

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,cmd,"Request",params,obj);
    };

    
    var funStats = {

        start : funStats,

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

    };

    var result = {};

    result.response = {};

    result.response.resultData = [];

    if(params.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.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(result);
            if(resultRes.response)

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

                result.response = data;
               
            }
        }

        
    }else if(params.method == "POST")
    {
        params.body = JSON.stringify(params.body);

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

        if(resultRes.response)

            result.response = JSON.parse(resultRes.body);

    }

    // console.log(result);

    
    if(result.response)

    {
        if(!result.response.resultCode)
            result.err = "Missing resultCode";

        if(!result.response.resultDescription)
            result.err = "Missing resultDescription";
    }

    if(result.err)
    {
        result.response = {};
        result.response.resultCode = "50000";

        //ETIMEDOUT = timeout
        //ECONNREFUSED = servercode

        if(result.err.code == 'ETIMEDOUT'){
            result.response.resultCode = "50003";
            result.response.resultDescription = "Timeout";
        } else if(result.err.code == 'ECONNREFUSED'){
            result.response.resultCode = "50002";

            result.response.resultDescription = "Reject";
        } else {
            if(result.err.indexOf("Missing") != -1){
                result.response.resultCode = "40300";
                result.response.resultDescription = result.err;
            } else {
                result.response.resultCode = "50000";
                result.response.resultDescription = "System error";
            }
        }

        if(result.response.resultCode == "40300"){
            stats.receiveBadRestResponse(service.Name,params.method,cmd);

        } else {
            stats.receiveResponse(service.Name,cmd,"Error");
        }

    }

    return result;

    
};

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;

}

module.exports = connection;