/*

	Copyright (c) 2020, 2023, The Unified Company.

	This code is part of Unify.

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE,
	as published by the Free Software Foundation.
	See the GNU AFFERO GENERAL PUBLIC LICENSE, for more details.

	https://unifyjs.org 

*/

import tools					from '../unify/tools.js';

import defaultObject 			from '../unify/defaultObject.js';

import omitMethods				from "../unify/omitMethodNames.js";

import unify					from '../unify/unify.js';

//import cacheString				from '../../assets/cache/cache.js'

var cache;

async function loadCache() {

	var randomInt			= Math.floor( Math.random() * 100000 );

	var cacheString 		= await import('../../assets/cache/cache.js?random=' +randomInt );

	cache					= JSON.parse( cacheString.default );

}

loadCache();

export default class renderCollection{

	__className			= "renderCollection";

	methodCache 		= new Array();
	
	//create() {

	//	this.fetch();
	
	//}
	
	synced 			= false;

	clearOnSync		= true;

	cache					= false;

	cacheLastModified		= false;

	useCache				= false;





	async updateCache() {

		var randomInt			= Math.floor( Math.random() * 100000 );

		var cacheString 		= await import('../../assets/cache/cache.js?random=' +randomInt );
		
		cache				= JSON.parse( cacheString.default );

	}

	clearRenderCollection() {
		
		var collection = this.getCollection();
		
		if( collection ) {
		
			collection.clear();
			
		}

		var children = this.getChildren();
		
		for( var c = 0; c < children.length; c++ ) {
		
			var child = children[ c ];
			
			child.remove();
		
		}

		this.defaultElement.innerHTML = "";
		
	}
	
	async sync() {

		await this.fetch();

		this.getCore().createDependencyMap();

		return true;

	}

	hasURL() {

		var hasUrl = false

		if( this.parent.type != "table" ) {

			hasUrl = true;

		}

		if( this.parent.type == "renderCollection" ) {

			hasUrl = false;

		}

		if( this.title && this.title.value == "" ) {

			hasUrl = false;

		}

		if( !this.title ) {

			hasUrl = false;
			
		}

		return hasUrl;

	}

	composePath() {

		var urlPath = new Array();
	
		urlPath.push( this.propertyName );
	
		if( this.id ) {

			urlPath.push( this.id );

		}
		
		if( this.title ) {

			if( this.title.value == "" ) {

				urlPath.push( this.propertyName.replaceAll(" ", "_") + ".html" );

			} else {

				urlPath.push( this.title.value.replaceAll(" ", "_") + ".html" );

			}

		} else {

			urlPath.push( this.propertyName.replaceAll(" ", "_") + ".html" );

		}

		return urlPath.join("/");

	}

	async createUrl( pass ) {

		var hasURL	= this.hasURL();

		if( hasURL || pass ) {

			var path				= this.composePath();
		
			var state 				= new Object();

			state.id 				= this.id;

			state.applicationPath 	= this.applicationPath;
			
			var url = window.location;

			await history.pushState( state, "Unify", "/" + path );

		}

	}

	cleanChildren( object ) {

		if( this.rows ) {

			this.rows = new Array();

		}

		if( object.getChildren ) {

			var children = object.getChildren();

			for (var i = 0; i < children.length; i++) {

				var child = children[i];

				if( child.rowID ) {

					console.log("delete", child.propertyName);

					delete this[ child.propertyName ];

				}
				
				this.cleanChildren( child );

			}

		}

	}

	logRenderCollection() {

		if( this.debug || document.debugALL ) {

			console.log( "" );
			console.log("%c renderCollection::fetch", "background: #a6e22e;", this.getClassName() );
			console.log( this );
			
		}

	}

	async recreateCache() {

		var cacheDateTime 	= await this.core.socketManager.get( "settings", "recreateCache", this, "recreateCache", false );

		this.core.socketManager.get( "table", "get", this, "fetch", false );

	}

	async fetch(  ) {

		this.logRenderCollection();

		this.rows = new Array();

		if( this.core ) {

			//var result 		= await this.core.socketManager.get( "table", "get", this, "fetch" );

			if( this.useCache && !this.id ) {

				var cacheDateTime 	= await this.core.socketManager.get( "settings", "getCacheDateTime", this, "fetch", false );

				if( !this.cacheLastModified ) {

					this.cacheLastModified = cacheDateTime;

				}

				if( this.cacheLastModified != cacheDateTime ) {

					console.log("cache has been modified, reloading cache.");

					await this.updateCache();

					this.cacheLastModified = cacheDateTime;

				} else {

					console.log("Use old cache because cache has not been modified.");

				}

				var currentCache			= cache[ this.getClassName() ];

				if( currentCache ) {

					this.core.socketManager.get( "table", "get", this, "fetch", false );

					result 	= currentCache;

					

				} else {

					console.log("dont use cache, await fetch");

					var result 		= await this.core.socketManager.get( "table", "get", this, "fetch" );

				}
				
			} else {

				var result 		= await this.core.socketManager.get( "table", "get", this, "fetch" );

			}


			this.synced		= true;

			if( this.clearOnSync ) {

				this.empty();

				console.log("empty renderCollection");

				this.rows 		= new Array();

			}
			
			await this.parseRows( result.rows );

			this.getCore().communicateVisibleElements();

		}

		return true;
	
	}

	remapCurrentMethod( object ) {

		var className 	= object.__className;

		var methods 	= this.methodCache[ className ];

		if( methods ){

			const keys = Object.keys(methods);

			for (var i = 0; i < keys.length; i++) {

				var methodName = keys[i]

				object[ methodName ] = this.methodCache[className][methodName];

			}

		}

	}

	remapMethods( object ) {

		unify.extend( object, true );

		this.remapCurrentMethod( object );

		var children = object.getChildren();

		for( var c = 0; c < children.length; c++ ) {
		
			var child = children[c];

			this.remapMethods( child );

		}

	}

	deleteProperties() {

		if( object.elements ) {

			for (var i = 0; i < object.elements.length; i++) {

				delete object.elements[i];

			}

		}

		delete object.element;

		delete object.customElement;

		delete object.boxElement;

		delete object.defaultElement;

		delete object.user;

		delete object.fileLoader;


	}

	copyMethods() {

		var properties = Object.getOwnPropertyNames( object )

		for (var j = 0; j < properties.length; j++) {
			
			var methodName = properties[ j ]

			if( typeof object[ methodName ] == "function" ) {

				this.methodCache[ className ][ methodName ] = object[ methodName ];
			
				object[ methodName ] = false;

			}

		}

		var methods = tools.getAllFuncs( object );

		for (var i = 0; i < methods.length; i++) {

			methodName = methods[ i ];

			this.methodCache[ className ][ methodName ] = object[ methodName ];

		}

	}

	removeDOM( object ) {

		var className = object.getClassName();

		if( !this.methodCache[className] ) {

			this.methodCache[ className ] = new Array();

		}

		this.deleteProperties();

		this.copyMethods();

		var children = object.getChildren();

		for( var c = 0; c < children.length; c++ ) {
		
			var child = children[c];

			this.removeDOM( child );

		}

	}

	async parseRows( rows ) {

		var promises	= new Array();

		if( !rows || !Array.isArray(rows) ) {

			console.log("rows doesnt contain an array.", rows, this);

			return false;

		}

		for( var c = 0; c < rows.length; c++ ) {
			
			var object = rows[ c ];

			object = this.addRowSync( object, false, c );

			this.rows.push( object );
			
		}

		await Promise.all( promises );

		return true;

	}

	serializeRenderCollection( object ) {

		if( object.rows && tools.isArray( object.rows ) ) {
		
			var rows = object.rows;

			var rows = new Array();

			for( var c = 0; c < rows.length; c++ ) {

				var object 				= rows[ c ];

				var object = targetObject.addRow( object, false, c );

				rows.push( object );

			}

		}

	}

}