# all files / node-ipc/services/ IPC.js

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60.81% Branches 45/74
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     'use strict';

    const Defaults = require('../entities/Defaults.js'),
        Client = require('../dao/client.js'),
        Server = require('../dao/socketServer.js'),
        util = require('util');

    class IPC{
        constructor(){
            Object.defineProperties(
                this,
                {
                    config      : {
                        enumerable:true,
                        writable:true,
                        value:new Defaults
                    },
                    connectTo   : {
                        enumerable:true,
                        writable:false,
                        value:connect
                    },
                    connectToNet: {
                        enumerable:true,
                        writable:false,
                        value:connectNet
                    },
                    disconnect  : {
                        enumerable:true,
                        writable:false,
                        value:disconnect
                    },
                    serve       : {
                        enumerable:true,
                        writable:false,
                        value:serve
                    },
                    serveNet    : {
                        enumerable:true,
                        writable:false,
                        value:serveNet
                    },
                    of          : {
                        enumerable:true,
                        writable:true,
                        value:{}
                    },
                    server      : {
                        enumerable:true,
                        writable:true,
                        configurable:true,
                        value:false
                    },
                    log         : {
                        enumerable:true,
                        writable:false,
                        value:log
                    }
                }
            );
        }
    }

    function log(){
        Iif(this.config.silent){
            return;
        }

        const args=Array.prototype.slice.call(arguments);

        for(let i=0, count=args.length; i<count; i++){
            if(typeof args[i] != 'object'){
                continue;
            }

            args[i]=util.inspect(
                args[i],
                {
                    depth:this.config.logDepth,
                    colors:this.config.logInColor
                }
            );
        }

        console.log(
            args.join(' ')
        );
    }

    function disconnect(id){
        Iif(!this.of[id]){
            return;
        }

        this.of[id].explicitlyDisconnected=true;

        this.of[id].off('*','*');
        Eif(this.of[id].socket){
            Eif(this.of[id].socket.destroy){
                this.of[id].socket.destroy();
            }
        }

        delete this.of[id];
    }

    function serve(path,callback){
        Iif(typeof path=='function'){
            callback=path;
            path=false;
        }
        Iif(!path){
            this.log(
                'Server path not specified, so defaulting to'.notice,
                'ipc.config.socketRoot + ipc.config.appspace + ipc.config.id'.variable,
                (this.config.socketRoot+this.config.appspace+this.config.id).data
            );
            path=this.config.socketRoot+this.config.appspace+this.config.id;
        }

        Iif(!callback){
            callback=emptyCallback;
        }

        this.server=new Server(
            path,
            this.config,
            log
        );

        this.server.on(
            'start',
            callback
        );
    }

    function emptyCallback(){
        //Do Nothing
    }

    function serveNet(host,port,UDPType,callback){
        if(typeof host=='number'){
            callback=UDPType;
            UDPType=port;
            port=host;
            host=false;
        }
        if(typeof host=='function'){
            callback=host;
            UDPType=false;
            host=false;
            port=false;
        }
        if(!host){
            this.log(
                'Server host not specified, so defaulting to'.notice,
                'ipc.config.networkHost'.variable,
                this.config.networkHost.data
            );
            host=this.config.networkHost;
        }
        Iif(host.toLowerCase()=='udp4' || host.toLowerCase()=='udp6'){
            callback=port;
            UDPType=host.toLowerCase();
            port=false;
            host=this.config.networkHost;
        }

        Iif(typeof port=='string'){
            callback=UDPType;
            UDPType=port;
            port=false;
        }
        Iif(typeof port=='function'){
            callback=port;
            UDPType=false;
            port=false;
        }
        if(!port){
            this.log(
                'Server port not specified, so defaulting to'.notice,
                'ipc.config.networkPort'.variable,
                this.config.networkPort
            );
            port=this.config.networkPort;
        }

        Iif(typeof UDPType=='function'){
            callback=UDPType;
            UDPType=false;
        }

        Iif(!callback){
            callback=emptyCallback;
        }

        this.server=new Server(
            host,
            this.config,
            log,
            port
        );

        if(UDPType){
            this.server[UDPType]=true;
            Iif(UDPType === "udp4" && host === "::1") {
                // bind udp4 socket to an ipv4 address
                this.server.path = "127.0.0.1";
            }
        }

        this.server.on(
            'start',
            callback
        );
    }

    function connect(id,path,callback){
        if(typeof path == 'function'){
            callback=path;
            path=false;
        }

        Iif(!callback){
            callback=emptyCallback;
        }

        Iif(!id){
            this.log(
                'Service id required'.warn,
                'Requested service connection without specifying service id. Aborting connection attempt'.notice
            );
            return;
        }

        if(!path){
            this.log(
                'Service path not specified, so defaulting to'.notice,
                'ipc.config.socketRoot + ipc.config.appspace + id'.variable,
                (this.config.socketRoot+this.config.appspace+id).data
            );
            path=this.config.socketRoot+this.config.appspace+id;
        }

        Iif(this.of[id]){
            if(!this.of[id].socket.destroyed){
                this.log(
                    'Already Connected to'.notice,
                    id.variable,
                    '- So executing success without connection'.notice
                );
                callback();
                return;
            }
            this.of[id].socket.destroy();
        }

        this.of[id] = new Client(this.config,this.log);
        this.of[id].id = id;
        this.of[id].path = path;

        this.of[id].connect();

        callback(this);
    }

    function connectNet(id,host,port,callback){
        Iif(!id){
            this.log(
                'Service id required'.warn,
                'Requested service connection without specifying service id. Aborting connection attempt'.notice
            );
            return;
        }
        Eif(typeof host=='number'){
            callback=port;
            port=host;
            host=false;
        }
        Iif(typeof host=='function'){
            callback=host;
            host=false;
            port=false;
        }
        Eif(!host){
            this.log(
                'Server host not specified, so defaulting to'.notice,
                'ipc.config.networkHost'.variable,
                this.config.networkHost.data
            );
            host=this.config.networkHost;
        }

        Iif(typeof port=='function'){
            callback=port;
            port=false;
        }
        Iif(!port){
            this.log(
                'Server port not specified, so defaulting to'.notice,
                'ipc.config.networkPort'.variable,
                this.config.networkPort
            );
            port=this.config.networkPort;
        }

        Iif(typeof callback == 'string'){
            UDPType=callback;
            callback=false;
        }
        Iif(!callback){
            callback=emptyCallback;
        }

        Iif(this.of[id]){
            if(!this.of[id].socket.destroyed){
                this.log(
                    'Already Connected to'.notice,
                    id.variable,
                    '- So executing success without connection'.notice
                );
                callback();
                return;
            }
            this.of[id].socket.destroy();
        }

        this.of[id] = new Client(this.config,this.log);
        this.of[id].id = id;
        this.of[id].path = host;
        this.of[id].port = port;

        this.of[id].connect();

        callback(this);
    }

    module.exports=IPC;