var LNVue = (function (){


    class LNVue
    {
        constructor(el,options = {}){
            this.options = Object.assign({
                routes: [],
                data: {},
            }, options );

            this._el = el;
            this.data = Object.assign({}, options.data, { LNVue: this, msg: "Hello World" });
            this.promises = [];

            Vue.prototype.$LNVue = this;
            LNVue.$_ = this;

            console.log("LNVue: preparing");

            this.navigation = {};

            Promise
            .all(LNVue.promises)
            .then(()=>{
                console.log("LNVue: starting");

                LNVue.vueRouter.addRoutes([{
                        path: "*",
                        component: {
                            template: `<h2>404 Not Found</h2>The URL you tried to reach is not existing.`,
                        },
                    }]);
                
            });

            this.vue = null;
        }

        Start(){
            Promise
            .all(this.promises)
            .then(()=>{
                LNVue.onidle(()=>{
                    this.vue = new Vue({
                        el: this._el,
                        data: this.data,
                        router: LNVue.vueRouter,
                        });
                    });
            });
        }

        Version(){ return "0.2alpha"; };

        addModule(modSpec){
            if (modSpec.navigation instanceof Object){
                LNVue.deepAssign(modSpec.navigation,this.navigation);
            }

            LNVue.$each(modSpec.routes,(key,route)=>{
                if ((route instanceof Object) && route.url)
                {
                    let p = new Promise((resolve,reject)=>{
                        LNVue
                        .fetch(route.url)
                        .then((src)=>{
                            this.addRoute(key,{ template: src, data: ()=>{ return this.data; }, });
                            resolve();
                        });    
                    });
                    this.promises.push(p);
                } else if (route instanceof Object){
                    this.addRoute(key,{ template: route.template, data: ()=>{ return this.data; }, } );
                } else {
                    this.addRoute(key,{ template: route, data: ()=>{ return this.data; }, } );
                }
            });
        }

        addRoute(path,component){
            let self = this;
            LNVue.vueRouter.addRoutes([
                { path, component, },
            ]);
        }

    }

    Object.defineProperty( LNVue, '$LNVue', {
        get: ()=>{ return LNVue.$_; },
    });

    LNVue.vueRouter = new VueRouter({
        routes: [],
    });

    LNVue.$idles = [];
    LNVue.onidle = function(cb,thisval = null){
        let scheduled = LNVue.$idles.length > 0;
        let n=0;
        
        for (;n<LNVue.$idles.length;n++){
            let idle = LNVue.$idles[n];
            if ((idle[0] == cb) && (idle[1] == thisval))
                break;
        }
        if (n == LNVue.$idles.length)
            LNVue.$idles.push([cb,thisval]);

        if (!scheduled)
            setTimeout(()=>{
                while (LNVue.$idles.length > 0){
                    let idle = LNVue.$idles.pop();
                    idle[0].call(idle[1]);
                }
            },0);
    }

    LNVue.$each = function(oa,cb){
        if (oa instanceof Array){
            let result = [];
            oa.forEach((value,index)=>{
                result.push(cb.call(value,index,value));
            });
            return result;
        } else if (oa instanceof Object){
            let result = {};
            Object.keys(oa).forEach((key)=>{
                if (oa.hasOwnProperty(key)){
                    result[key] = cb.call(oa[key],key,oa[key]);
                }
            });
            return result;
        }
    }

    LNVue.deepAssign = function(source,target){
        LNVue.$each(source,function(key){
            if (target[key] instanceof Object){
                LNVue.deepAssign(src[key],target[key]);
            } else {
                target[key] = source[key];
            }
        });
    }

    LNVue.$ = function(src){
        let el = document.createElement("parse");
        el.innerHTML = src;
        return el.firstChild;
    }

    LNVue.routes = [];
    LNVue.promises = [];

    LNVue.fetch = function(url,cb){
        let self = this;
        return new Promise(function(resolve,reject){
            fetch(url)
            .then((response => {
                if (response.status.toString().startsWith("2"))
                {
                    let t = response.text();
                    cb && cb(t,null);
                    resolve(t);
                } else {
                    cb && cb(null, response.statusText);
                    reject(response.statusText);
                }
            }));
        });
    }

    LNVue.each = function(o,cb){
            if (o instanceof Array)
                o.forEach((value,index)=> cb(value,index) );
            else
                Object.keys(o).forEach((key)=>{
                    if (o.hasOwnProperty(key))
                        cb(o[key],key);
                });
        };

    return LNVue;
})();