'use strict';

module.exports = /**
 * Initiates an Isomorphic engine for rendering a `Space`.
 * @param {CFG.SPCE.Space} space 
 * @param {import('dffrnt.route').REST} REST 
 * @param {FluxSpaces} Builders 
 */
function ISO(space, REST, Builders) {

	////////////////////////////////////////////////////////////////////////
	// VARIABLES -----------------------------------------------------------

		/**
		 * @type {CFG.SPCE.Page}
		 */
		const PAGE 		= space.page;
		/* 
			const Redux 	= require('redux');
			const ReRedux 	= require('react-redux');
		 */
		/**
		 * @type {ReFlux}
		 */
		const Reflux 	= require('reflux');
		const Actions 	= require('../../actions') //(Reflux);
		const COMPS		= require('./components')(global, Reflux, Actions, null);
		const React 	= COMPS.React;
		const RDOMServ 	= require('react-dom/server');
		const Stores	= COMPS.Stores;
		const Spaces	= {
			Auth: Builders['accessor'],
			Page: Builders[space.name],
		};
		const App		= React.createFactory(COMPS.Elements[TC(PAGE.main)].App);
		const Merger   	= function Merger(data, res) {
			let dta = Imm.fromJS(data), mrg = Imm.fromJS(res);
			return dta.mergeDeepWith((o,n) => { 
				return ((IS(n)=='socket')?(o||null):n);
			}, 	mrg).toJS();
		}

	////////////////////////////////////////////////////////////////////////
	// MAIN ----------------------------------------------------------------

		return class Renders {
			constructor(LID, Path) {
				let THS = this, Data; THS.HTML = '';

				global.NMESPC = space; 
				Data = Spaces.Page.Data[0].bind(REST)(Path);

				Reflux.initStore(Stores.App(LID));
				Reflux.initStore(Stores.Data);

				THS.Single = Stores.Apps[LID].singleton;
				THS.Styles = THS.State.style.replace(/\n */g,' ');
				THS.Build  = {
					Auth: Spaces.Auth.Build(Actions, Stores, LID),
					Page: Spaces.Page.Build(Actions, Stores, LID),
				};
				THS.Render = ((Data, LID) => {
					return (function Render(pay) {
						this.Build.Page(Merger(Data,pay), TITLE);
						// console.log(this.State)
						let res = {
							HTML:  RDOMServ.renderToString(App(Assign({LID:LID},this.State))),
							State: JSON.stringify([this.State]),
						};
						return res;
					}).bind(THS);
				})(Data, LID);
			}

			get State () { return this.Single.state; }
			get Call  () { return Spaces.Page.Call; }
			
			Auth(title, user)  {
				global.TITLE  = title; 
				this.Single.reset();
				this.Build.Auth(user, TITLE);
			}
			Render(pay)  {}
			Clear(LID)   {
				delete Stores.Apps[LID];
			}
		};
};